前苏联专利SU1258341A3 Device for reproducing image signals

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专利摘要:
The invention can be used in facsimile technology when reproducing an image with a coarser resolution than when reading an image, the information content increases. From block 1 of reading the electronic signal, corresponding to the reproducible image, through the analog-to-digital converter2 enters the memory blocks (3B) 3-6, which memorize the signals of the magenta, blue, yellow and black colors, respectively. With BZ signals are received acc. processing channels (CO) 9-12. In Qo, using shift registers 13, 15, 17, multiplier 14, and adder I6, high-resolution image signals are converted with high resolution when reading I have a coarse image with poor resolution during reproduction. The scale of the conversion is received by the memory block (PSU) 18. High-resolution image point signals are evaluated separately and added together. A single value of the image signal is obtained, which is recorded in the PSU 19. The signals of the control unit 8 read the converted signals and reproduce the image with the video control unit 7, 4 or later. and with /
公开号:SU1258341A3
申请号:SU3599274
申请日:1983-05-27
公开日:1986-09-15
发明作者:Галл Винрих；Везельманн Петер
申请人:Др-Инж Рудольф Хелль Гмбх (Фирма)；
IPC主号:

专利说明:

The invention relates to the field of transmission and reception of facsimile signals, namely to reproducing an image with a coarser resolution than when reading an image.
The purpose of the invention is to increase the information content.
Yes, FIG. 1 shows the structural electrical circuit of the device for reproducing image signals in FIG. 2 — a field of 4xA fine image points from which a coarse image point should be obtained; Figs. 3 and 4 are triangular and rectangular functions by which the image signals are evaluated.
The device dp playback of image signals contains a block 1 read, 6noff 2 analog-digital conversion (LCP), a storage unit 3 signals magenta (M), a storage unit 4 blue signals (C). A storage unit 5 signals yellow (Y) the storage unit 6 of the black signals (k) j the video monitoring unit 7, the control unit 8, the first to fourth signal processing channels 9-12, the first shift register 13, the multiplier 14, the second shift register 15, the adder 16, the third shift register 17, first block 18 of memory, second block 19 pa 1 and.
The device for reproducing image signals operates as follows.
The image to be reproduced from the information carrier is read out on points and lines by the reading unit. The analog signal received as a result of the conversion goes to ADC unit 2, where. converted into a digital code, which enters the storage blocks 3-6 of the signals M, C, D and K, respectively. In blocks 3-6, the digital signals of the individual images or corrected journal pages are stored, which in the form of a coarse image should be reproduced on video monitoring unit 7.
Fundamentally, the transformation of a fine image with a high resolution when read into a coarse image with a high resolution when reproducing an image is carried out by extracting high resolution images from digital signals,
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the number of image point signals that falls on the coarse image point. This amount is derived from the scale with which the thin image is to be converted into the image in question. The high-resolution image point signals are individually evaluated, added together, and one image signal value is obtained, which in total YAB: 1 is the image point of the field and dp records are taken.
The signals from the storage blocks 3-6, respectively, of the signals M, C, U, K are received respectively in the first - fourth identical channels 9-12 of signal processing, in each of which} 0
20
25
The signals are passed through the first shift register 13, the multiplier 14, the adder 16 and the third shift register 17 and arrive at the input of the second memory block 19, the read inputs of which receive signals from the control block 8, the corresponding outputs of which are received to the control inputs of the first shift register 13, storing blocks of 3-6 signals
30 M, C, U, K, the second shift register 15 and the input of the first memory block 18, the spreading signal from which is fed to the corresponding input of the second shift register 15, from the output
35 of which the signal arrives at the second input of the multiplier 14. In this case, the second input of the adder 16 receives a signal from the output of the third shift register 17. Figure 2 presents the field in
which, in the form of numerical values, estimating coefficients are introduced, by which high-resolution image signals are estimated. After evaluation, the individual image signals are summed and as a result, an image signal is obtained with a single tone gradation, which is a coarse resolution image point. All of the above is achieved by multiplying and adding the signal. Since the coarse resolution signal is represented in a digital code, the resulting error
55 can be corrected by passing through these blocks of highly valued bits, while the remaining bits are discarded,
45
50
The image signal can be estimated in accordance with FIG. 3 from the center of the field to the edge with a decreasing tendency, as well as in accordance with FIG. 4, over the entire field with the same coefficient.
It should be noted that the magnitude of the field in Fig. 2 can take on any other arbitrary value, if this is required by a corresponding different scale factor between the high-resolution image and the image in question. In this case, it is necessary to transform accordingly more or fewer points of the fine image into a single point of the coarse image.

权利要求:
Claims (1)
[1]
Invention Formula
A device for reproducing image signals comprising a series-connected reading unit and an analog-to-digital conversion unit, the first, second, third and fourth outputs of which are connected to the first inputs of the storage blocks of the magenta (M), blue (C), yellow signals respectively colors (Y) and black (K)
Video control unit n control unit, characterized in that, in order to increase the information content, four signal processing channels are entered into it, each of which is connected to the output of the storage unit, respectively, of the signals M, C, Y, K and contains in series with the same first register the shift, the first input of which is the input of the signal processing channel, the multiplier, the second input of which is connected to the output of the second shift register, the adder and the third shift register, the output of which is connected to the second input of the adder and is you ode signal processing channel, as well as two memory blocks, the output of the first of which is connected to the first input of the second shift register, the input of the second memory block is connected to the output of the processing channel. The signal, the output of the second memory block is connected to the input of the video monitor, the outputs of the control unit are connected to the second inputs of the storage units of the signals M, C, U and K, respectively, to the second inputs of the first, second and third shift registers, to the input of the first memory block and to the control input of the second memory block.
Editor I.Rybchenko
Order 5046/61 Circulation 624 Subscription
VNIIPI USSR State Committee
for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
Production and printing company, Uzhgorod, Projecto st., 4
Compiled by V.Lapshov. Tehred L. Serdyukov “Proofreader S. Shekmar

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引用文献:

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US3996421A|1975-09-02|1976-12-07|Hughes Aircraft Company|Television display utilizing local area brightness control|

US4134128A|1976-03-19|1979-01-09|Rca Corporation|Television picture size altering apparatus|

US4240113A|1976-10-14|1980-12-16|Micro Consultants, Limited|Picture manipulation in video systems|

DE2646926B2|1976-10-18|1979-03-29|Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel|Process for changing the pixel-wise decomposition of halftone images in the transition from reproduction to recording|

JPS6053938B2|1978-06-02|1985-11-28|Dainippon Screen Mfg|

JPS6142263B2|1979-07-02|1986-09-19|Dainippon Screen Mfg|

GB2101836B|1981-07-18|1985-02-20|Linotype Paul Ltd|Method for encoding image data|JPS59175272A|1983-03-25|1984-10-04|Canon Inc|Picture reduction system|

JPH0343665B2|1984-02-23|1991-07-03|Dainippon Screen Mfg|

WO1986003610A1|1984-12-06|1986-06-19|Dainippon Screen Mfg. Co., Ltd.|Method and apparatus for compressing image data|

JPH0422391B2|1985-03-07|1992-04-16|Dainippon Screen Mfg|

GB2172167B|1985-03-07|1988-06-15|Sony Corp|Video signal processing|

US4656515A|1985-03-25|1987-04-07|Rca Corporation|Horizontal compression of pixels in a reduced-size video image utilizing cooperating subsampling and display rates|

IL83515A|1986-10-14|1991-03-10|Ibm|Digital display system|

US5029107A|1989-03-31|1991-07-02|International Business Corporation|Apparatus and accompanying method for converting a bit mapped monochromatic image to a grey scale image using table look up operations|

BE1003276A3|1990-01-09|1992-02-11|Aesthedes N V|Method and device for generating a lithographical screen|

EP0473767A1|1990-03-23|1992-03-11|Eastman Kodak Company|Virtual memory management and allocation arrangement for digital data processing system|

US5287452A|1990-03-23|1994-02-15|Eastman Kodak Company|Bus caching computer display system|

DE19545626C1|1995-12-07|1997-04-30|Agfa Gevaert Ag|Image processing method and apparatus|

US5755575A|1996-08-16|1998-05-26|Sulzer Calcitek, Inc.|Dental implant delivery system and method|

AU696786B2|1996-11-08|1998-09-17|Umax Data Systems Inc.|Separately weighted multi-sampled image signal processing apparatus|

US6469801B1|2000-05-17|2002-10-22|Heidelberger Druckmaschinen Ag|Scanner with prepress scaling mode|

US6496274B1|2000-05-17|2002-12-17|Heidelberger Druckmaschinen Ag|Scanner with prepress mode|

EP1158769A1|2000-05-17|2001-11-28|Heidelberger Druckmaschinen Aktiengesellschaft|Scanner with prepress mode|

法律状态:

优先权:

申请号 | 申请日 | 专利标题

EP82104691A|EP0095514B1|1982-05-28|1982-05-28|Method and apparatus for the reproduction of an image with a coarser resolution than during picture scanning|

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