• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a raster / column conversion technology for data processing in an inkjet printer. In order to implement a raster / column converter suitable for supporting high-quality and high-speed processing, a light count value (i.e. A write counter 31 that counts VAL1 and resets the write count value VAL1 when the count clear signal C_CLR is asserted; A read counter 32 for counting a read count value VAL2 according to the read die acknowledgment signal ACK2 and resetting the read count value VAL2 when the count clear signal C_CLR is asserted; By using the write and read count values VAL1 and VAL2, the input data DATA_IN is stored at an appropriate position of the file register 34 or data is read from an appropriate position, and a blank insertion signal INS or a file is read. A control logic section 33 for inserting blank data into the file register 34 or clearing the entire stored file based on the clear signal F_CLR; Under the control of the control logic unit 33, the data for raster / column conversion is temporarily stored and then configured as a file register 34 for outputting to the output data DATA_OUT.
    公开号:KR19990034360A
    申请号:KR1019970055955
    申请日:1997-10-29
    公开日:1999-05-15
    发明作者:김기태
    申请人:구자홍；엘지전자 주식회사；
    IPC主号:
    专利说明:

    Raster / Column Converters in Inkjet Printers
    The present invention relates to a raster / column conversion technology for data processing in an inkjet printer, and in particular, an inkjet hardware implementation of a raster / column converter supporting not only basic printing functions but also high quality and high speed printing functions. A raster / column converter of a printer.
    In recent years, inkjet printers have been in the spotlight as low-cost, high-performance printers, which need to rotate the input raster image by 90 ° and transmit it to the print head. This emulation is a burden on the central processing unit. It is desirable to implement in hardware because it gives.
    In addition, recent inkjet printers require high image quality and high-speed processing as well as existing basic print functions, and the development of a raster / column converter is essential among the core technologies for realizing this. .
    1 is a block diagram of an inkjet printer according to the prior art, as shown therein, a parallel interface unit 1 for interfacing in parallel the image data DATA supplied from a PC PC and storing it in the raster buffer 2. )Wow; A raster / column converter (3) which reads and writes data stored in the raster buffer (2), rotates it by 90 degrees, and processes the data according to the specifications of the head (7) and stores them in the column buffer (5); A dedicated DM (4) for generating an address (Add) for reading and writing of the raster buffer (2) and the column buffer (5); The head controller 6 is configured to drive the head 7 according to the output data of the column buffer 5 so that a corresponding image is printed. The operation thereof will be described as follows.
    Image data (DATA) output from the print driver of the PC (PC) are sequentially stored in the raster buffer (2) via the parallel interface unit 1 of the inkjet printer, and the stored image data is stored in the raster / column converter (3) By 90 ° and then processed to fit the specification of the head 7 and stored in the column buffer 5.
    At this time, the address (Add) necessary for the raster / column converter 3 to read and write the image data to the raster buffer 2 and to write the data to the column buffer 5 is generated in the dedicated DM 4. do.
    In addition, the head controller 6 drives the head 7 according to the output data of the column buffer 5 so that the corresponding image is printed on paper.
    However, in the inkjet printer according to the prior art, the raster / column converter has no difficulty in supporting the basic print function, but there is a shortage in supporting the high quality, high speed print function.
    Accordingly, an object of the present invention is to provide a raster / column conversion apparatus of an inkjet printer suitable for supporting a high quality, high speed printing function.
    1 is an overall block diagram of an inkjet printer according to the prior art.
    2 is an exemplary block diagram of a raster / column conversion apparatus of the inkjet printer according to the present invention.
    3A and 3B are diagrams illustrating read directions of data according to mode signals.
    3C and 3D are diagrams illustrating write directions of data according to mode signals.
    4A to 4D are exemplary views of a VHDL code applied to the raster-column converter of the present invention.
    *** Description of the symbols for the main parts of the drawings ***
    1: Parallel Interface Unit 2: Raster Buffer
    3: raster / column converter 4: dedicated DM
    5: column buffer 6: head controller
    7: head
    FIG. 2 is a block diagram illustrating an exemplary raster / column conversion device of an inkjet printer for achieving the object of the present invention. As shown in FIG. 2, the light count value VAL1 is counted according to the write DM recognition signal ACK1. A write counter 31 which resets the write count value VAL1 when the count clear signal C_CLR is asserted; A read counter 32 for counting the read count value VAL2 according to the read die acknowledgment signal ACK2 and resetting the read count value VAL2 when the count clear signal C_CLR is asserted; By using the write and read count values VAL1 and VAL2, the input data DATA_IN is stored at an appropriate position of the file register 34 or data is read from an appropriate position, and a blank insertion signal INS or a file is read. A control logic section 33 for inserting blank data into the file register 34 or clearing the entire stored file based on the clear signal F_CLR; It consists of a file register 34 which temporarily stores the data to be raster / column converted under the control of the control logic section 33 and outputs the output data to DATA_OUT. 1 and 3 to 4 will be described in detail as follows.
    The write counter 31 increments the write count value VAL1 [3: 0] by one each time the write DM acknowledgment signal ACK1 is asserted, and the write counter 31 increases the count when the count clear signal C_CLR is asserted. Reset the count value VAL1 [3: 0].
    The read counter 32 increments the read count value VAL2 [3: 0] by one each time the read DM acknowledgment signal ACK2 is asserted, and the read count value VAL2 [3 when the count clear signal C_CLR is asserted. Reset: 0]. The read count value VAL2 [3: 0] is used as part of the address when the column buffer 5 is written.
    The control logic section 33 uses the write count value VAL1 [3: 0] counted by the write counter 31 to file data DATA_IN [15: 0] read and input from the raster buffer 2. The register 34 is stored in an appropriate location. An example of the file register 34 may be a register having a 16 × 16 standard.
    The control logic section 33 also reads data from an appropriate position of the file register 34 using the read count value VAL2 [3: 0] counted by the read counter 32.
    When the blank insertion signal INS is asserted to the control logic unit 33, the control logic unit 33 inserts blank data into the file register 34 and a file when the file clear signal F_CLR is asserted. Clear the entire file stored in register 34.
    As a result, the file register 34 is composed of a predetermined number of registers (16 × 16 = 256), and the data to be raster / column converted is temporarily stored therein, and then the output data DATA_OUT [15: 0] is stored therefrom. Is generated and stored in the column buffer 5 of FIG.
    The control logic unit 33 determines the data read and write directions to the file register 34 according to the input mode signal MODE [1: 0], thereby creating different types of files. Each file type is shown.
    That is, FIG. 3A shows that the data read direction proceeds sequentially from the top to the bottom when the mode signal MODE [1] = "0", and FIG. 3B shows the data read direction when the mode [1] = "1". It is shown to proceed in the opposite direction to Figure 3a. 3C shows that the write direction for data output proceeds sequentially from right to left when the mode signal MODE [0] = "0", and FIG. 3D shows data when MODE [0] = "1". It shows that the lead direction proceeds in the opposite direction to FIG. 3C.
    4A to 4D, which are not described, show a VHDL code applied to a raster / column converter according to the present invention.
    As described in detail above, in the raster / column converter of the inkjet printer, the present invention has the effect of contributing to enhancement of the competitiveness of the inkjet printer by enabling a high quality and high speed printing function.
    权利要求:
    Claims (3)
    [1" claim-type="Currently amended] A write counter 31 that counts the write count value VAL1 according to the write DM acknowledgment signal ACK1 and resets the write count value VAL1 when the count clear signal C_CLR is asserted; A read counter 32 for counting the read count value VAL2 according to the read die acknowledgment signal ACK2 and resetting the read count value VAL2 when the count clear signal C_CLR is asserted; By using the write and read count values VAL1 and VAL2, the input data DATA_IN is stored at an appropriate position of the file register 34 or data is read from an appropriate position, and a blank insertion signal INS or a file is read. A control logic section 33 for inserting blank data into the file register 34 or clearing the entire stored file based on the clear signal F_CLR; And a file register (34) for temporarily storing raster / column conversion data under the control of the control logic section (33) and outputting the output data (DATA_OUT).
    [2" claim-type="Currently amended] 2. The control logic unit 33 according to claim 1, wherein the control logic section 33 sets the read direction of the data in the up and down forward direction or the reverse direction and the write direction of the data in the left, right forward or reverse direction according to the mode signal MODE. The raster / column converter of the inkjet printer characterized by the above-mentioned.
    [3" claim-type="Currently amended] The raster / column converter of claim 1, wherein the file register (34) is comprised of registers having a 16x16 structure.
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    同族专利:
    公开号 | 公开日
    KR100253202B1|2000-04-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-10-29|Application filed by 구자홍, 엘지전자 주식회사
    1997-10-29|Priority to KR1019970055955A
    1999-05-15|Publication of KR19990034360A
    2000-04-15|Application granted
    2000-04-15|Publication of KR100253202B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019970055955A|KR100253202B1|1997-10-29|1997-10-29|Raster/column converter for inkjet printer|
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