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    • 专利摘要:
    CODE SUPPORT, CAPSULE INTENDED TO DELIVER A DRINK IN A DRINK PRODUCTION DEVICE, SYSTEM FOR PREPARING A DRINK AND METHOD OF READING A CODE IN A CAPSULE. The present invention relates to a code holder (60a, 60b) adapted to be associated with / or part of a capsule for delivering a beverage in a beverage production device by centrifuging the capsule. The holder comprises a code formed by at least a first sequence of symbols and a second sequence of symbols. The code is represented on the support, so that each symbol is sequentially readable by a reading device (100) of an external reading device while the capsule is activated in rotation along the axis of rotation (Z). The first sequence comprises at least one first symbol preamble sequence, and at least one first symbol data sequence. The second sequence comprises at least a second preamble sequence of symbols, and at least a second sequence of symbol data. The first preamble sequence is distinct from the second preamble sequence.
    公开号:BR112014011389B1
    申请号:R112014011389-0
    申请日:2012-11-14
    公开日:2020-11-03
    发明作者:Christian Jarisch；Arnaud Gerbaulet；Stefan Kaeser
    申请人:Société des Produits Nestlé S.A.；
    IPC主号:
    专利说明:

    Field of the Invention
    [001] The present invention relates to the field of beverage preparation, in particular, using capsules that contain an ingredient for the preparation of a beverage in a beverage preparation machine. The present invention relates in particular to optical code carriers adapted to store information related to a capsule, associated capsules / or incorporating a code carrier, reading and processing arrangements for reading and using such information to prepare a drink . Fundamentals of the Invention.
    [002] For the purposes of this description, a "drink" means to include any liquid substance for human consumption, such as tea, coffee, hot or cold chocolate, milk, soup, baby food or the like. A "capsule" means to include any beverage ingredient pre-divided into portions or a combination of ingredients (hereinafter referred to as "ingredient") within a wrapper of any suitable material such as plastic, aluminum, a recyclable material and / or biodegradable and combinations thereof, including a soft cocoon or a rigid cartridge containing the ingredient.
    [003] Certain beverage preparation machines use capsules that contain ingredients to be extracted or to be dissolved and / or an ingredient that is stored and dosed automatically in the machine or if it is not added at the time of preparation of the drink. Some beverage preparation machines have liquid filling means, which include a pump for liquid, usually water, which pumps the liquid from a source of water that is cold, or even heated through heating means, for example , a thermo-block or the like. Certain beverage preparation machines are arranged to prepare drinks by means of a centrifugal extraction process. The principle mainly consists of providing the beverage ingredient in a capsule container, feeding liquid into the receptacle and rotating the container at a high speed to ensure the interaction of the liquid with the powder while creating a pressure gradient of the liquid in the receptacle; such pressure gradually increases from the center towards the periphery of the receptacle. As the liquid passes through the coffee layer, the coffee compounds are extracted and a liquid extract is obtained that flows out of the periphery of the receptacle.
    [004] It is usually appropriate to offer the user a series of capsules of different types containing different ingredients (for example, different mixtures of coffee) with specific flavor characteristics, to prepare a variety of different drinks (for example, different types of coffee ), with the same machine. The characteristics of the drinks can be varied by varying the contents of the capsule (for example, the weight of the coffee, different mixtures, etc.) and by adjusting the key parameters of the machine, such as the volume of liquid supplied or the temperature, the speed of rotation, the pressure pump. Therefore, there is a need to identify the type of capsule inserted in the beverage machine to allow adjustment of the coffee preparation parameters for the type inserted. In addition, it may also be desirable for the capsules to incorporate additional information, for example, safety information such as expiration date or production data, such as batch numbers.
    [005] WO2010 / 026053 refers to a beverage production device controlled using centrifugal forces. The capsule may contain a bar code provided on an outer face of the capsule and which allows detection of the type of capsule and / or the nature of the ingredients supplied within the capsule in order to apply a pre-defined extraction profile for the drink to be prepared.
    [006] It is known in the art, for example, in EP1764015A1, to print an identification barcode locally on a small area of the circular crown of a coffee pod for use with conventional non-centrifuge coffee preparation systems . Said systems comprise a barcode reader for reading the identification barcode on the capsule. Barcode scanners or barcode scanners are electronic devices that comprise a light source, a lens and a light sensor translating optical impulses into electrical ones. They generally comprise a light emitting diode / laser, or a camera-type sensor. Barcode readers in the beverage preparation machine are adapted to read the barcode or to move the detection element through the bars (moving / changing the source beam orientation to read the entire code), or taking an image of the entire code at once with a light sensitive matrix.
    [007] The use of this type of code reader is not adapted to be used in the context of an extraction system based on centrifugation having a rotary coffee preparation unit. The use of barcode readers that have moving parts as a digital reading element can raise serious concerns in terms of reliability as they are likely to be exposed to a hostile environment with cyclic vibrations and hot vapors when placed in immediate proximity. rotating coffee maker. Barcode reader with camera-type sensor must be positioned so as to be able to obtain an image of the entire barcode. As a consequence, the entire code needs to be visible directly from the reader. The free space available in a rotating coffee maker dedicated to a code reader is very limited, it is generally not possible to meet this visibility requirement.
    [008] Whatever the type of barcode reader used, the geometric configuration of the rotating coffee preparation units in centrifuge-based extraction systems prevents the barcode reader from reading a code spread over a large section of the capsule : as a consequence, the dimensions of the barcode are strictly limited, leading to a very low amount of coded information for a given level of reliability of the readings, usually around only 20 bits. In addition, barcode scanners are quite expensive.
    [009] Reliably reading a printed code on a capsule while said capsule is positioned within a rotating coffee preparation unit implies the reliable recognition of symbol sequences that form said code, in particular, in the hostile environment of the preparation unit rotating coffee machine. In addition, the code must also be readable, without the code reader knowing the position and / or orientation in which the capsule has been inserted into the capsule holder. Traditional barcodes and another optical coding element known in the art for a capsule no longer meet these requirements.
    [0010] The co-pending international patent application PCT / EP11 / 057670 refers to a support adapted to be associated with / or be a part of a capsule for the preparation of a drink. The support comprises a section in which at least one sequence of symbols is represented, so that each symbol is readable sequentially by a reading device of an external device, while the capsule is driven in rotation along an axis of rotation, each sequence code of a set of information related to the capsule. This invention makes it possible to make available a large volume of encoded information, such as approximately 100 bits of redundant or non-redundant information, without the use of barcode readers that have moving parts as a digital reading element that can raise serious concerns in reliability. Another advantage is also being able to read the code holder by rotating the capsule while the capsule is in place, in a ready-to-prepare position on the rotating capsule holder.
    [0011] However, there is still a need to improve the pattern and / or structure of the code represented on the support to improve the reliability of the readings, in the particular conditions gathered in a centrifugal beverage machine using capsules, for the preparation of the drink. There is still a need to provide a capsule with a readable code reliably a code reader, without knowledge of the position and / or orientation of said code, when the capsule is positioned in the rotating capsule support of an extraction system based on centrifugation. Brief Description of the Invention
    [0012] An object of the invention is to provide means for storing, reading and processing information related to a capsule, more particularly, information to identify said capsule inside a production machine and to retrieve or read the information to adjust the working parameters of the machine and / or to control parameters for the preparation of a drink with said capsule. Another objective is to provide a capsule that incorporates these means.
    [0013] Another objective is to control the optimal conditions for the preparation of a drink.
    [0014] Another objective is to provide a solution for reading information reliably related to a capsule with a sensor placed in the machine, for example, in the processing module / coffee production unit of the machine, where the available spaces they are very limited and in a hostile environment (traces of ingredients, presence of vapors and liquids, etc.).
    [0015] One or more of these objectives are met by a capsule, a support, a device or a method according to the independent claim (s). The attached claims provide further solutions for these objects and / or additional benefits.
    [0016] More particularly, according to a first aspect, the invention relates to a code holder adapted to be associated with / or part of a capsule intended to supply a beverage in a beverage production device by centrifuging the capsule. The holder comprises a code formed by at least a first sequence of symbols and a second sequence of symbols. The code is represented on the support, so that each symbol is sequentially readable by a reading device from an external reading device while the capsule is activated in rotation along the axis of rotation. The first sequence comprises at least a first sequence of symbol preamble, and at least a first sequence of symbol data. The second sequence comprises at least a second symbol preamble sequence, and at least a second symbol data sequence. The first preamble sequence is distinct from the second preamble sequence.
    [0017] By sequentially providing readable symbols while the capsule is activated in rotation, the amount of encoded data can be increased and / or the area covered by each symbol can be increased, improving the overall reliability of the readings. By "sequentially" is meant that one or a limited number of symbols (less than the number of symbols that make up each sequence) are read at a given time: for example, each symbol can be read separately. As a consequence, at least one reading of all symbols included in all sequences on the support can be performed by the reading device, after a 360 degree rotation of the capsule around its axis of rotation.
    [0018] The first and second preamble sequences allow to determine which symbols belong to the first sequence and which symbols belong to the second sequence, without any knowledge of the angular configuration of the code holder when it is positioned in the beverage machine. In addition, a more robust detection of said critical information to decode the code is achieved thanks to the use of different first and second preamble sequences.
    [0019] For example, the first preamble sequence may comprise a first 6-bit length sequence PA = '10101010', the second 6-bit length sequence PB = '010101'. The first sequence can start with the first PA sequence, then a first D1 block comprising a data block F1 having n1 bits with parity check bits. The second sequence can start with the second sequence PB, then a second block D2 comprising a data block F2 having n2 bits with parity check bits. The position of the first sequence and the second sequence can then be determined using an algorithm to identify the pattern PA - X1 - PB - X2 where X1 represents any sequence of n1 bits, X2 represents any sequence of n2 bits. For example, an Equal Bit Number (NEB) filter can be used.
    [0020] The code can represent more than two strings, for example, four or five strings of symbols. In this case, at least two different preamble sequences are used, but, preferably, each preamble sequence is chosen to be distinct from the other preamble sequences.
    [0021] In particular, the information set may comprise information for the recognition of a type associated with the capsule, and / or one or a combination of items from the following list:
    [0022] information related to the parameters for the preparation of a drink with the capsule, such as the optimal rotation speeds, the temperatures of the water entering the capsule, temperatures of the drink collector outside the capsule, the flow rates of water entering the capsule, sequence of operations during the preparation process, etc.
    [0023] information to recover locally and / or remotely parameters for the preparation of a drink with the capsule, for example, an identifier that allows the recognition of a type for the capsule;
    [0024] information related to the manufacture of the capsule, such as a manufacturing batch identifier, production date, a recommended consumption date, an expiration date, etc .;
    [0025] information to retrieve locally and / or remotely information related to the manufacture of the capsule.
    [0026] The symbols arranged in strings are used to represent data communicating the set of information related to the capsule. For example, each string can represent an integer number of bits. Each symbol can encode one or more binary bits. The data can also be represented by transitions between symbols. The symbols can be arranged in sequence using a modulation scheme, for example, a line code like a Manchester code.
    [0027] Each symbol can be represented in the section by an entity that has a measurable characteristic, readable by the measurement arrangement, the measurable characteristic varying according to the value transmitted by said symbol. Each symbol can be printed and / or embossed. The shape of the symbols can be chosen from the following non-exhaustive list: arc-shaped segments, segments that are individually rectilinear, but that extend across at least part of the section, points, polygons, geometric shapes. The symbols can be read by an optical sensor included in the reading arrangement, the color and / or the shape of each symbol being chosen according to the value of said symbol. The symbols can be printed with ink that is not visible to the human eye under natural light, for example, ink visible under UV. The symbols can be printed or embossed by a pattern that has surfaces having different reflective and / or light-absorbing properties. The pattern may have first surfaces having slanted mirroring or light absorbing properties and the second surface having flat mirroring or plane reflective properties of light. Other variable physical characteristics can be chosen to distinguish each symbol, for example, color, reflectivity, opacity, light absorption level, magnetic field, induced magnetic field, resistivity, capacity, etc.
    [0028] The code may contain error detection or error correction information, in particular related to the data. Information for error detection can include repetition codes, parity bits, checksums, cyclic redundancy checks, hash cryptographic function data, etc. Information for error correction may include error correction codes, forward error correction codes and, in particular, convolutional codes or block codes.
    [0029] At least a first sequence of symbol data and at least a second sequence of symbol data may include the same information. Therefore, error checking can be performed by comparison, for example, and parts of the code affected by errors can be processed accordingly. This improves the likelihood of successful code reading if some parts of the sequence are unreadable.
    [0030] In one embodiment, the first preamble sequence of symbols is formed by a plurality of first preamble subsequences, said plurality of first preamble substrings being distributed according to a first pattern from among the first sequence. The second preamble sequence of symbols is formed by a plurality of first preamble substrings, said plurality of second preamble substrings being distributed according to a second pattern among the second sequence. In particular, the first pattern and the second pattern can be identical.
    [0031] For example, a first preamble sequence PA is formed by the first four preamble substrings: PAI = 10, PA2-01 ', PA3-10', PA4-01 '. A first block D1 comprises the first four sub-blocks Dn, D12, D13, Du, forming a data block F1 having n1 bits with parity check bits. The first sequence can be as follows: PAI Du PA2 D12 PA3 D13 PA4 D14. A second preamble sequence PB is formed by four second preamble substrings: PAI-01 '. PA2 = '1O', PA3 = 01, PA4-10. A first D2 block comprises the first four sub-blocks D21, D22, D23, D24, forming a data block F2 having n2 bits with parity check bits. The second sequence can be as follows: PB1 D21 PB2 D22 PB3 D23 PB4 D24. The position of the first sequence and the second sequence can then be determined using an algorithm to identify the pattern PAI - X - PA2 - X - PA3 - X - PA4- p _ x - PB2 - X - PB3- X - PB4 where X represents any sequence of bits. For example, an Equal Bit Number (NEB) filter can be used.
    [0032] Advantageously, the first symbol preamble sequence and the second symbol preamble sequence can be chosen / set to minimize the number of equal bits in series in the code.
    [0033] The code preferably comprises at least 100 symbols.
    [0034] The code can be arranged along at least one eighth of the circumference, and preferably along the entire circumference of the support.
    [0035] According to a second aspect, the invention relates to a capsule intended to deliver a beverage in a beverage production device by centrifugation comprising a flange-like rim comprising a code holder according to the first aspect.
    [0036] According to a third aspect, the invention relates to a system for preparing a beverage from a capsule according to the second aspect, and further comprising a beverage preparation device having means for supporting the capsule and rotationally driving means for driving the support means and the rotating capsule along said axis of rotation. The beverage preparation devices further comprise a reading device configured to decode the code represented on the code holder:
    [0037] by reading each code symbol separately, while activating the rotational actuation means so that the capsule performs at least one complete turn; and,
    [0038] by searching, in the symbols read, at least the first preamble sequence and the second preamble sequence;
    [0039] by identifying the position of at least a first sequence and at least a second sequence, accordingly.
    [0040] In accordance with a fourth aspect, the invention relates to a method for reading a code in a capsule according to the second aspect, in a beverage preparation device having means for supporting the capsule and means for rotational drive to drive the support means and the capsule in rotation along said axis of rotation; the beverage preparation devices further include a reading device. The method comprises the following steps:
    [0041] when reading separately, with the reading device, each symbol of the code, while activating the means of rotational activation so that the capsule makes at least one complete turn; and,
    [0042] searches, in the symbols read, at least a first preamble sequence and the second preamble sequence;
    [0043] identification of the position of at least a first sequence and at least a second sequence, accordingly. Brief Description of the Figures
    [0044] The present invention will be better understood thanks to the detailed description that follows and the accompanying drawings, which are given as non-limiting examples of embodiments of the invention, especially: - Figure 1 illustrates the basic principle of centrifugal extraction; Figures 2a, 2b illustrate an embodiment of the centrifugal cell with a capsule holder; - Figures 3a, 3b, 3c illustrate an embodiment of a set of capsules according to the invention; Figure 4 illustrates an embodiment of a code holder according to the invention; Figure 5 illustrates an alternative position of the sequence in the capsule, in particular, when placed on the underside of the capsule rim, and the capsule mounted on a capsule support of the extraction device; - Figure 6 illustrates a graphical representation of an example of the results of a NEB filter in a code with a common preamble used throughout the code sequence; Figure 7 shows a graphic representation of an example of the results of a NEB filter on a code according to an embodiment of the invention. - Figure 8 shows a graphical representation of the number of equal bits in series for a code according to an embodiment of the invention. Detailed Description
    [0045] Figure 1 illustrates an example of a beverage preparation system 1 as described in WO2010 / 026053 for which the capsule of the invention can be used.
    [0046] The centrifuge unit 2 comprises a centrifuge cell 3 to exert centrifugal forces on the beverage ingredient and the liquid inside the capsule. The cell 3 may comprise a capsule holder and a capsule received therein. The centrifugal unit is connected to drive means 5 such as a rotary motor. The centrifugal unit comprises a collection part and an outlet 35. A receptacle 48 can be arranged under the outlet to collect the extracted beverage. The system further comprises liquid supply means, such as a 6 water reservoir and a Fluid 4 circuit. Heating means 31 can also be provided in the reservoir or along the Fluid circuit. The liquid supply means may further comprise a pump 7 connected to the reservoir. A flow restriction means 19 is provided to create a restriction on the flow of the centrifuged liquid exiting the capsule. The system can also include a flow meter, such as a flow measurement turbine 8 to provide control of the flow rate of water supplied in cell 3. Counter 11 can be connected to flow measurement turbine 8, to allow an analysis of the generated pulse data 10. The analyzed data is then transferred to processor 12. Therefore, the exact actual flow rate of the liquid within the Fluid 4 circuit can be calculated in real time. A user interface 13 can be provided to allow the user to enter information, which is transmitted to the control unit 9. Additional features of the system can be found in WO2010 / 026053.
    [0047] Figures 3a, 3b and 3c refer to an embodiment of a set of capsules 2A, 2B, 2C. The capsules preferably comprise a body 22, a rim 23 and an upper part of the wall corresponding to a lid 24. The lid 24 can be a perforable membrane or an opening in the wall. In this way, the lid 24 and the body 22 confine a wrapper referring to the ingredient compartment 26. As shown in the Figures, the lid 24 is preferably connected over an inner ring part R of the rim 23, which is preferably between 1 to 5 mm.
    [0048] The rim is not necessarily horizontal, as illustrated. It can be slightly folded. The rim 23 of the capsules preferably extends outward in an essentially perpendicular (as illustrated) or slightly inclined (if folded as previously mentioned) direction with respect to the Z axis of rotation of the capsule. Thus, the axis of rotation Z represents the axis of rotation, during the centrifugation of the capsule in the infusion device, and, in particular, is substantially identical to the axis of rotation Z of the capsule holder 32 during the centrifugation of the capsule in the infusion device. infusion.
    [0049] It should be understood that the embodiment shown is only an exemplary embodiment and that the capsule, in particular, the body of the capsule 22, can take several different embodiments.
    [0050] The body 22 of the respective capsule has a single convex part 25a, 25b, 25c of variable depth, respectively, d1 d2, d3. In this way, the part 25a, 25b, 25c can also be a truncated or a partly cylindrical part.
    [0051] Thus, capsules 2A, 2B, 2C preferably comprise different volumes, but preferably the same insertion diameter "D". The capsule of Figure 3a shows a small volume capsule 2A while the capsule of Figure 3b and 3 c shows a larger volume capsule 2B and 2C respectively. The insertion diameter 'D' is hereby determined at the intersection line between the lower surface of the rim 23 and the upper part of the body 22. However, it could be another reference diameter of the capsule in the device.
    [0052] The small volume capsule 2A preferably contains a quantity of extraction ingredient, for example, ground coffee less than the quantity for larger volume capsules 2B, 2C. Therefore, the small capsule 2 A is intended for the delivery of a short coffee between 10 ml and 60 ml, with a quantity of ground coffee between 4 and 8 grams. Larger capsules 2B are designed to deliver medium-sized coffee, for example, between 60 and 120 ml, and the larger capsule is designed to deliver long-sized coffee, for example, between 120 and 500 ml. In addition, the medium size coffee capsule 2B may contain an amount of ground coffee comprised between 6 and 15 grams and the long size coffee capsule 2C may contain an amount of ground coffee between 8 and 30 grams.
    [0053] Furthermore, the capsules in the set according to the invention may contain different mixtures of roasted and ground coffee or coffees of different origins and / or having different roasting and / or grinding characteristics.
    [0054] The capsule is designed to rotate around the Z axis. This Z axis runs perpendicularly through the center of the lid, which is shaped like a disk. This Z axis comes out in the center of the lower body. This Z axis will help to define the notion of "circumference", which is a circular path located in the capsule and having the Z axis as a reference axis. This circumference can be on the cover, for example, cover or on the body part, such as on the Flange type rim. The lid may be impermeable to liquids, prior to insertion into the device, or it may be permeable to liquids, through small openings or pores provided in the center and / or periphery of the lid.
    [0055] Hereinafter, the bottom surface of rim 23, refers to the section of rim 23, which is located outside the housing formed by the body and the lid, and is visible when the capsule is oriented on the side where its body is visible.
    [0056] Additional characteristics of the capsules or the defined capsules can be found in WO 2011/0069830, WO 2010/0066705, or WO2011 / 0092301.
    [0057] An embodiment of the centrifugal cell 3 with a capsule holder 32 is illustrated by Figures 2a and 2b. The capsule holder 32 generally forms an enlarged cylindrical or conical cavity equipped with an upper opening for inserting the capsule and a lower lower part closing the container. The opening is slightly larger in diameter than that of the body 22 of the capsule. The contour of the opening fits the contour of the rim 23 of the capsule configured to rest on the edge of the opening when the capsule is inserted. As a consequence, the rim 23 of the capsule rests, at least partially, on a receiving part 34 of the support of the capsule 32. The bottom bottom is equipped with a cylindrical shaft 33 perpendicularly to the center of the outer face of the bottom. The capsule support 32 rotates around the central axis Z axis 33.
    [0058] An optical reading arrangement 100 is also shown in Figure 2a and 2b. The optical reading arrangement 100 is configured to provide an output signal comprising information related to a reflectance level of a surface of the lower surface of the rim 23 of a capsule supported on the receiving part 34 of the capsule holder 32. The Optical reading is configured to perform optical measurements of the surface of the lower surface of the rim 23 through the capsule support 32, more particularly through a side wall of the capsule support 32 in an enlarged cylindrical or conical shape. Alternatively, the output signal may contain differential information, for differences in reflective instance over time, or contrast information. The output signal can be analog, for example, a voltage signal that varies with the information measured over time. The output signal can be digital, for example, a binary signal that comprises numerical data of the information measured over time.
    [0059] In the embodiment of Figures 2a and 2b, reading arrangement 100 comprises a light emitter 103 for the emission of a light beam from a source 105a and a light receiver 102 to receive a reflected light beam 105b.
    [0060] Normally the light emitter 103 is a light emitting diode or a laser diode, emitting infrared light, and more particularly a light with a wavelength of 850nm. Typically, the light receiver 103 is a photodiode, adapted to convert a received light beam into a current or voltage signal.
    [0061] The reading device 100 also comprises processing means 106 including a printed circuit board incorporating a processor, sensor signal amplifier, signal filters and circuits for coupling said processing means 106 to the light emitter 103, light receiver 102 and machine control unit 9.
    [0062] The light emitter 103, the light receiver 102, and the processing means 106 are held in a fixed position by a support 101, rigidly fixed with respect to the machine chassis. The reading device 100 remains in position during an extraction process and is not activated for rotation, contrary to the support of the capsule 32.
    [0063] In particular, the light emitter 103 is arranged so that the light beam from the source 105a is generally oriented along a line L crossing at a fixed point F the plane P comprising the receiving part 34 of the support of the capsule 32, said plane P having a normal line N passing through point F. The fixed point F determines an absolute position in the space where the beam of light from the source 105a is intended to reach a reflective surface: the position of the fixed point F remains unchanged when the capsule holder is rotated. The reading device may comprise focusing means 104, lenses and / or prisms, to make the beam of light from the source 105 more efficiently converge to the fixed point F of the bottom surface of a capsule cap positioned within the capsule holder. 32. In particular, the light beam from the source 105 can be focused so as to illuminate a disc centered substantially on the fixed point F and having a diameter d.
    [0064] The reading device 100 is configured so that the angle 0E between line L and normal line N is between 2nd and 10th, and in particular between 4th and 5th, as shown in Figure 2a. As a consequence, when a reflecting surface is arranged at the point F, the reflected light beam 105b is generally oriented along a line L ', crossing the fixed point of F, the angle between the line OR L' and the normal line N being between 2 and 10 °, and in particular, between 4 and 5, as shown in Figure 2a. The light receiver 102 is arranged on the support 101 in order to at least partially collect the reflected light beam 105b, generally oriented along the line L '. The focusing means 104 can also be arranged to make the reflected light beam 105b to focus more efficiently on the receiver 102. In the embodiment illustrated in Figure 2a, 2b, point F, line L and line L 'are from the same plane . In another embodiment, point F, line L and line L 'are not on the same plane: for example, the plane that passes through point F and line F and the plane that passes through point F and line L' are positioned at a sensible 90 ° angle, eliminating direct reflection and allowing for a more robust reading device with less noise.
    [0065] The capsule support 32 is adapted to allow partial transmission of the light beam from the source 105a along the line L to the point of F. For example, the side wall forming the cavity of the capsule support 32 in a cylindrical shape or extended conical is configured to be non-opaque for infrared lights. Said side wall can be made of a plastic-based material which is translucent to the infrared having entrance surfaces allowing the infrared light to enter.
    As a consequence, when the capsule is placed in the capsule holder 32, the light beam 105a hits the bottom of the rim of said capsule at point F, before forming the reflected light beam 105b. In this embodiment, the reflected light beam 105b passes through the wall of the capsule holder to the receiver 102.
    [0067] The section of the lower surface of the rim 23 of the capsule positioned inside the capsule holder 32, illuminated at point F by the light beam from the source 105, changes over time, only when the capsule holder 32 is activated to enter in rotation. Then, complete rotation of the capsule holder 32 is necessary for the light beam from the source 105 to illuminate the entire annular section of the lower surface of the rim.
    [0068] The output signal can be calculated or generated by measuring over time the intensity of the reflected light beam, and possibly comparing its intensity to that of the source light beam. The output signal can be calculated or generated by determining the variation over time in the intensity of the reflected light beam.
    [0069] The capsule according to the invention comprises at least one optical code holder. The code holder may at present be part of the flange-type rim. The symbols are represented on the optical code holder.
    [0070] The symbols are organized in at least one sequence, that said sequence encoding a set of information related to the capsule. Each symbol is used to encode a specific value.
    [0071] In particular, the set of information from at least one of the strings may comprise information for the recognition of a type associated with the capsule, and / or one or a combination of items from the following list:
    [0072] information related to the parameters for the preparation of a drink with the capsule, such as the optimal rotation speeds, the temperatures of the water entering the capsule, the temperature of the drink collector outside the capsule, the rates of flow of water entering the capsule, sequence of operations during the preparation process, etc .;
    [0073] information to recover locally and / or remotely parameters for the preparation of a drink with the capsule, for example, an identifier that allows the recognition of a type for the capsule;
    [0074] information related to the manufacture of the capsule, such as a manufacturing batch identifier, production date, a recommended consumption date, an expiration date, etc .;
    [0075] information to retrieve locally and / or remotely information related to the manufacture of the capsule.
    [0076] The symbols are distributed sensibly over at least 1/8 of the circumference of the ring support, preferably over the entire circumference of the ring support. The code can include successive arc-shaped segments. The symbols may also comprise successive segments which are individually straight, but, extend over at least a part of the circumference.
    [0077] The sequence is repeated, preferably along the circumference, in order to ensure a reliable reading. The sequence is repeated at least twice on the circumference. Preferably, the sequence is repeated three to six times on the circumference. Repeating the sequence means that the same sequence is duplicated and the successive sequences are positioned in series along the circumference so that in a 360 degree rotation of the capsule, the same sequence can be detected or read more than once.
    [0078] Referring to Figure 4, an embodiment 60a of a code holder is illustrated. The code holder 60a occupies a defined width of the rim 23 of the capsule. The rim 23 of the capsule can essentially comprise an inner annular portion forming the support 60a and an arcuate outer portion (not coded). However, it is possible that the entire width of the rim is occupied by the support 60a, in particular, if the bottom surface of the rim can be made substantially flat. This location is particularly advantageous since it offers both a large area for the symbols to be placed and is less prone to damage caused by the processing module and, in particular, the pyramidal plate, and the protuberances of ingredients. As a consequence, the amount of information encoded and the reliability of the readings are both improved. In this embodiment, the code holder 60a comprises 160 symbols, each code symbol of 1 bit of information. The symbols being contiguous, each symbol has a linear arc length of 2.25 °.
    [0079] Referring to Figure 5, an embodiment 60b of a code holder is illustrated in plan view. The code holder 60b is adapted to be associated with / or be part of a capsule, in order to be activated in rotation, when the capsule is rotated around its Z axis by the centrifugal unit 2. The receiving section of the capsule is the bottom surface of the rim 23 of the capsule. As shown in Figure 5, the code holder can be a ring that has a circumferential part on which at least one sequence of symbols is represented, so that the user can position it on the circumference of the capsule before inserting it inside the machine's coffee production unit. Therefore, a capsule with no built-in means for storing the information can be modified by mounting such a support to include that information. When the support is a separate part, it can be simply added to the capsule, without additional fixing means, the user ensuring that the support is correctly positioned when entering the coffee production unit, or the shapes and dimensions of the support preventing - to move with respect to the capsule once assembled. The code holder 30b may also comprise additional fixing means for rigidly fixing said element to the capsule receiving section, such as glue or mechanical means, to help the support remain fixed with respect to the capsule once assembled. As also mentioned, the code holder 60b can also be a part of the rim itself as integrated with the capsule structure.
    [0080] Each symbol is adapted to be measured by the reading device 100 when the capsule is positioned inside the capsule holder and when said symbol is aligned with the light beam of the source 105a at point F. More particularly, each symbol the different one has a reflectivity level of the light beam of the source 105a varying according to the value of said symbol. Each symbol has different reflective properties and / or absorption of the light beam from the source 105a.
    [0081] Since the reading array 100 is adapted to measure only the characteristics of the illuminated section of the coding support, the capsule must be rotated by the actuation means until the light beam from the light source has illuminated all symbols understood in the code. Normally, the speed of reading the code can be comprised between 0.1 and 2000 rpm.
    [0082] Example 1 - Preamble of inadequate code to support optical code, with at least two sequences, read in rotation.
    [0083] An example of a sequence of 15 binary symbols is shown in table 1 below:
    Table 1
    [0084] The S1 sequence of table 1 begins with a preamble of 6 bits in length. Preamble P1 corresponds to a known reserved bit stream, in this example '10101010 Then, the stream consists of three data blocks F11, F12, F13. Each data block starts with a value of 2 bits in length, and ends with an odd parity check bit. Table 2 shows an example of a code reading comprising the sequence S1 followed by a sequence S2:
    Table 2
    [0085] Reading starts at the third bit of the first sequence of S1, after the start of Preamble P1. In order to read all the symbols in each sequence, at least a complete turn of the optical code holder is therefore necessary.
    [0086] Having gathered all the symbols, it is necessary to reconstruct each sequence, and, in particular, by determining the position of the preambles. A coincident filtering method can be used to perform this task. For example, in the following example, an Equal Bit Number (NEB) filter has been applied to the read bits, using the preamble P1 as the '101010' matching pattern. This method consists of adding, for each window of consecutive bits of the read bits, said window having the same length as the matching pattern, the number of bits that are common to the bits of the matching pattern. For a P1 preamble of six bits in length, the maximum of the NEB filter is 6, when the bits read from the window correspond to those of the P1 preamble. The result can be further improved by calculating a contrast between the results of the NEB filter, for example, by calculating the difference between the result of the NEB filter at a given position in the window, and the result of the NEB filter at the next position of the window. The higher the contrast, the better.
    Table 3
    [0087] In this non-functional example, the maximum 6 for the NEB filter is found for sequences of 6 bits from 10 bits, 12 bit and 14 bit. However, only the 6-bit sequence starting at bit 14 actually corresponds to the preamble P1 of the second period. Even a contrast calculation does not solve this problem, since the contrast is greater for 6-bit strings starting at 10 bits and 12 bits. As a consequence, such a preamble P1 is not suitable, especially since it does not allow to confidently determine the effective position of said preamble in the sequences. Figure 6 shows an example of the results of a NEB filter on such a code structure.
    [0088] Example 2 - Code preamble for optical code support, having four sequences, read in rotation.
    [0089] A suitable preamble P is shown below. Preamble P is spread over the sequences represented in the optical code holder. For example, preamble P comprises a first 6-bit sequence of length PA = '101010', a second 6-bit sequence of length PB = '010101', and a third a sequence of 6 bits of length Pc = '011001' , and a fourth 6-bit string length PD = '100110'.
    [0090] The first sequence S1 starts with the first sequence PA, then a first block D1 comprising three data blocks F11, F12, F13 with parity check bits. The second sequence S2 begins with the second sequence PB, a second block D2 comprising three data blocks F21, F21, F23 with parity check bits The third sequence S3 begins with the third sequence Pc, then a third block D3 comprising the three data blocks F11, F12, F13 with parity check bits. The fourth sequence S4 begins with the fourth sequence PD, then a fourth block D4 comprising the three data blocks F21, F22, F23 with parity check bits. Next, the following sequences are represented in the code holder: PA-F11 - F12-F13-PB-F21 - F22 - F23 - Pc - F11 -F12-F13- pD _ F21 - F22 - F23. The first block of D1, respectively, the second block D2, the third block D3, the fourth D4 include a number of bits n1, respectively n2, n3 and n4.
    [0091] To read all the symbols of each sequence, at least a complete rotation of the optical code holder is therefore necessary.
    [0092] The position of the first D1 block, the second D2 block, the third D3 block, and the fourth D4 block are determined by looking for the PA - X1 - PB - X2 - Pc - X3 - PD - X4 pattern in the bit stream read by the optical reader, where X1 represents any sequence of n1 bits, X2 represents any sequence of n2 bits, X3 represents any sequence of n3 bits, X4 represents any sequence of n4 bits. Thus, not only the sequence of bits corresponding to that of the preamble is sought, but the relative positions of PA, PB, PC, PD are taken into account, allowing a more robust and reliable identification of the beginning of each data block.
    [0093] For example, an Equal Bit Number (NEB) filter can be applied to the read bits, using the following matching pattern: '101010xxxxxxxxx010101 xxxxxxxxxO11001 xxxxxxxxxl 00110xxxxxxxxx',
    [0094] where x corresponds to any bit, and with n1 = n2 = n3 = n4 = 9 bits.
    [0095] The filter is applied to read bits, changing the start position of the oscillating filter window from the first bit read to the last bit read. The position of the window corresponding to the maximum value of the NEB filter is probably to correspond to the beginning of the first sequence S1. Figure 7 shows an example of the results of a NEB filter on such a code structure.
    [0096] It is also possible to calculate the contrast between the NEB filter value for each window position in relation to the NEB filter value in the next window position: the window position corresponding to the maximum NEB contrast value is probably at the same time for match the start of the first S1 sequence.
    [0097] Example 3 - Code preamble for optical code support, having four sequences, read in rotation.
    [0098] A suitable preamble P 'is shown below. Preamble P 'is spread over the sequences represented in the optical code holder. For example, the preamble P 'comprises a first 6-bit string of length PA =' 101010 ', a second 6-bit string of length PB =' 010101 ', and a third a 6-bit string of length Pc =' 011001 ', and a fourth 6-bit string length PD =' 100110 '.
    [0099] The first PA sequence comprises three subsequences PAI = '10 ', PA2 =' 1O ', PA3 =' 1O '. The second PB sequence comprises three subsequences PBI = '0T, PB2 =' O1 ', PB3 =' O1 '. The third Pc sequence comprises three subsequences Pci = '01 ', Pc2 =' O1 ', Pc3 =' O1 '. The fourth PD sequence comprises three subsequences PDI = '1O', PD2 = '1O', PD3 = '1O'.
    [00100] A first sequence S1 is formed by the subsequence PA1, then a data block F1 with a parity check bit, the subsequence PA2, then a data block F2 with a parity check bit, a subsequence PA3, then a block of data F3 with a parity check bit. A second sequence S2 is formed by the subsequence PBI, then the data block F1 with a parity check bit, the subsequence PB2, then the data block F2 with a parity check bit, the subsequence PB3, then, the F3 data block with a parity check bit. A third sequence S3 is formed by the subsequence Pci, then 0 data block F1 with a parity check bit, the subsequence Pc2, then 0 data block F2 with a parity check bit, the sub-sequence PC3, then an F3 data block with a parity check bit. A fourth sequence S4 is formed by the subsequence PDI, then 0 data block F1 with a parity check bit, the subsequence PD2, then 0 data block F2 with a parity check bit, the subsequence PDS, then an F3 data block with a parity check bit. Then, in the code support, the following sequences are represented:


    [00101] The data block F1, the data block F2, the data block F3, the data D4 respectively include a number of bits n1, respectively n2, n3 and n4.
    [00102] To read all the symbols of each sequence, at least a complete rotation of the optical code holder is therefore necessary.
    [00103] The position of the F1 data block, the second F2 block, the third F3 block in each of the S1, S2, S3, S4 sequences is determined by looking for the pattern:

    [00104] In the bit sequence read by the optical reader, where X1 represents any sequence of n1 bits, X2 represents any sequence of n2 bits, X3 represents any sequence of n3 bits.
    [00105] Thus, not only is the bit sequence corresponding to that of the preamble sought, but the positions relative to the sub-sequence PA, PB, PC, PD are taken into account, allowing a more robust and reliable identification of the beginning of each data block. In addition, by dividing and spreading the preambles into smaller sequences, it is possible to optimize the encoding information by minimizing the number of equal bits in the series (EBS). Figure 8 shows the number of equal bits in the series for such a code structure.
    [00106] For example, an Equal Bit Number (NEB) filter can be applied to the read bits, using the following matching pattern: '10xxx10xxx10xxx01 xxx01 xxx01 xxx01 xxx10xxx01 xxx10xxx01 xxx1 Oxxx1,
    [00107] where x corresponds to any bit, and with n1 = n2 = n3 = 3 bits.
    [00108] The filter is applied to read bits, changing the start position of the oscillating filter window from the first bit read to the last bit read. The position of the window corresponding to the maximum value of the NEB filter is probably to correspond to the beginning of the first sequence S1.
    [00109] It is also possible to calculate the contrast between the NEB filter value for each window position in relation to the NEB filter value in the next window position: the window position corresponding to the maximum NEB contrast value is probably at the same time for match the start of the first S1 sequence.
    权利要求:
    Claims (12)
    [0001]
    1. Code holder (60a, 60b) adapted to be associated with / or part of a capsule intended to supply a beverage in a beverage production device by centrifuging the capsule, the holder comprising a code, characterized by the fact that the code consists of at least a first sequence of symbols and a second sequence of symbols, said code being represented on the support so that each symbol is readable sequentially by a reading device of an external device while the capsule is activated in rotation following an axis of rotation; the first sequence comprises at least a first preamble sequence of symbols, and at least a first sequence of symbol data; the second sequence comprises at least a second preamble sequence of symbols, and at least a second sequence of symbol data; the first preamble sequence is distinct from the second preamble sequence.
    [0002]
    2. Code support, according to claim 1, characterized by the fact that the code comprises error detection information or error correction information.
    [0003]
    3. Code support, according to either claim 1 or claim 2, characterized by the fact that at least a first sequence of symbol data and at least a second sequence of symbol data include the same information.
    [0004]
    4. Code support, according to any of the vindications 1 to 3, characterized by the fact that the first preamble sequence of symbols is formed by plurality of first preamble sub-sequences, said plurality of first preamble substrings being distributed according to a first pattern among the first sequence, and wherein the second preamble sequence of symbols is formed by plurality of second preamble subsequences being distributed according to a second pattern among the second sequence.
    [0005]
    5. Code support, according to claim 4, characterized by the fact that the first pattern and the second pattern are identical.
    [0006]
    6. Code support, according to any of claims 1 to 5, characterized by the fact that the first sequence of symbol preambles and the second sequence of symbol preambles are defined to minimize the number of equal bits in the series in the code.
    [0007]
    7. Code support, according to any of claims 1 to 6, characterized by the fact that the code comprises at least 100 symbols.
    [0008]
    8. Code support, according to any of claims 1 to 7, characterized by the fact that the code is arranged over at least one eighth of a circumference of the code support.
    [0009]
    9. Code support, according to any of claims 1 to 8, characterized by the fact that the code is arranged along an entire circumference of the code support.
    [0010]
    10. Capsule designed to deliver a beverage in a beverage production device by centrifugation comprising a flange-type rim characterized by the fact that it comprises a code holder according to any of the preceding claims.
    [0011]
    A system for preparing a beverage comprising a capsule as defined in claim 10, and further comprising a beverage preparation device; wherein the device comprises the capsule support means (32) for securing the capsule and rotational drive means (5) for driving the support means and the capsule in rotation along said axis of rotation, characterized by the fact that the beverage preparation devices further comprise a reading device (100) configured to decode the code represented on the code holder: • by reading each code symbol separately, while activating the rotational drive means (5) so that the capsule makes at least one complete turn; and, • by searching the reading symbols for at least the first preamble sequence and the second preamble sequence; • by identifying the position of at least a first sequence and at least a second sequence, accordingly.
    [0012]
    A method for reading a code on a capsule as defined in claim 10, on a beverage preparation device having capsule support means (32) for holding the capsule and rotationally driving means (5) for driving the means of support and the capsule rotating along said axis of rotation; the drink preparation devices also include a reading device (100), characterized by the fact that the method comprises the following steps: • read separately, with the reading device (100), each code symbol, while activating the means of rotational drive (5) so that the capsule makes at least one complete turn; and, • search, in the symbols read, at least a first preamble sequence and the second preamble sequence; • identify the position of at least a first sequence and at least a second sequence, accordingly.
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    同族专利:
    公开号 | 公开日
    AR089180A1|2014-08-06|
    EP3047765B1|2017-06-28|
    PL2779877T3|2016-10-31|
    MY167659A|2018-09-21|
    BR112014011389A2|2017-05-02|
    EP2779877A1|2014-09-24|
    PL2779877T4|2017-10-31|
    PL2594171T3|2014-09-30|
    CA2855568A1|2013-05-23|
    JP2015502201A|2015-01-22|
    TWI536942B|2016-06-11|
    EP2779877B1|2016-03-30|
    KR101970851B1|2019-04-19|
    US20160019448A1|2016-01-21|
    CN103945739B|2016-09-28|
    AU2012338917A1|2014-04-24|
    TW201325518A|2013-07-01|
    PL3047765T3|2017-10-31|
    IL231991A|2018-03-29|
    ZA201404389B|2016-09-28|
    HUE034445T2|2018-02-28|
    ES2570859T3|2016-05-20|
    MX2014005917A|2014-06-05|
    CA2855568C|2019-08-20|
    US9268984B2|2016-02-23|
    NZ623524A|2016-03-31|
    DK3047765T3|2017-08-21|
    EP2594171A1|2013-05-22|
    RU2014124107A|2015-12-27|
    PT3047765T|2017-10-03|
    SG11201401600YA|2014-07-30|
    PT2594171E|2014-05-07|
    IN2014DN03304A|2015-05-22|
    HUE029161T2|2017-02-28|
    EP3047765A1|2016-07-27|
    KR20140097279A|2014-08-06|
    DK2779877T3|2016-05-30|
    DK2594171T3|2014-05-19|
    US20140252093A1|2014-09-11|
    US9582699B2|2017-02-28|
    IL231991D0|2014-05-28|
    ES2471874T3|2014-06-27|
    ES2635644T3|2017-10-04|
    WO2013072351A1|2013-05-23|
    RU2602048C2|2016-11-10|
    CN103945739A|2014-07-23|
    AU2012338917B2|2016-09-29|
    JP6022595B2|2016-11-09|
    EP2594171B1|2014-04-16|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-10-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2019-10-15| B25A| Requested transfer of rights approved|Owner name: SOCIETE DES PRODUITS NESTLE S.A. (CH) |
    2020-05-19| B09A| Decision: intention to grant|
    2020-11-03| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 14/11/2012, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP11189414.3A|EP2594171B1|2011-11-16|2011-11-16|Support and capsule for preparing a beverage by centrifugation, system and method for preparing a beverage by centrifugation|
    EP11189414.3|2011-11-16|
    PCT/EP2012/072584|WO2013072351A1|2011-11-16|2012-11-14|Support and capsule for preparing a beverage by centrifugation, system and method for preparing a beverage by centrifugation|
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