CN1670683A - Method of synchronous conversion image processing for printers - Google Patents
Method of synchronous conversion image processing for printers Download PDFInfo
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- CN1670683A CN1670683A CN 200410006234 CN200410006234A CN1670683A CN 1670683 A CN1670683 A CN 1670683A CN 200410006234 CN200410006234 CN 200410006234 CN 200410006234 A CN200410006234 A CN 200410006234A CN 1670683 A CN1670683 A CN 1670683A
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Abstract
This invention relates to a printer simultaneously image process method, which is to convert the printing file data into printing CMYK bit image database, wherein, the printer conversion device comprises RIP device and CMS device. It utilizes the software sequence control area image buffer materials and process sequence to make the two devices simultaneously operating and to make the printing engine to quickly get the CMYK bit image data converted for printing.
Description
Technical field
The present invention relates to a kind of printer and change the technology of image processing synchronously, relate in particular to a kind of resource and processing sequence of utilizing in the software queue control section image buffer zone, make RIP device and CMS device be able to the method for synchronous operation.
Background technology
The prior art that the data of file to be printed is converted to the CMYK data bitmap is carried out in proper order for utilizing software, and as shown in Figure 1, at first printed driver can transfer the data of file to be printed to PDL (Printer definition language) file 11; Utilize PDL parsing module 12 that PDL file 11 is divided into several RGB section images (image segment); Produce the RGB bitmap of RGB section image again by RGB modular converter 14; It is the CMYK bitmap of CMYK section image with the RGB bitmap-converted of RGB section image that the color matchmaker closes (color matching) module 16; And screening (screening) module 18 produces CMYK section image other C, M, Y and K (shadow tone) bitmap 19.
Utilizing software to carry out data with file to be printed in proper order, to be converted to the CMYK data bitmap be a series of step: at first, application program requires printed driver to transmit the data of file to be printed to printer.Printed driver can change into each page of file to be printed the PDL page or leaf of PDL form, the PDL page or leaf of PDL form comprises different object 20 (object), for example, literal (text), figure (graphics) and raster image (raster images) ... wait and conversion command, for example, color (color), Graphic State (graphic state), pattern (patten) and size (size) ... etc.As Fig. 2, shown in Figure 3 shown in, and printer side has a simulator in order to carry out conversion work, wherein the PDL of simulator resolves (parser) module 12 and is responsible for resolving the PDL pages or leaves and objects all in the PDL page or leaf is divided into several RGB section images 13.One of them RGB section image 13 has 64,128,256 or more scanning linear (scan line) 21.The RGB modular converter 14 of simulator is according to object and order in each RGB section image 13, produce the RGB bitmap 15 of each RGB section image 13, and be stored in RGB section image and change and dash district (image segment buffer), wherein each pixel 17 of RGB bitmap 15 is 24 data.The color matchmaker compound module 16 of simulator is converted to the CMYK bitmap 19 of CMYK section image with the RGB bitmap 15 of each RGB section image 13, and wherein the pixel of each CMYK bitmap 19 is 8 data.Afterwards, the screening module 18 of simulator produces CMYK section image other C, M, Y and K (shadow tone) bitmap, according to the resolution of print engine (engine), the color depth (color depth) of individual other C, M, Y and K (shadow tone) bitmap can be 1,2 or 4.At last, CMYK section image other C, M, Y and K (shadow tone) bitmap are sent to print engine and print.
Carry out in proper order the conversion work of file to be printed data except utilizing software, the prior art that also has device conversion image processing hardware, color matchmaker compound module 16 and screening module 18 are utilized the real work of hardware unit, this hardware unit is referred to as CMS device 24, and the data that can accelerate file to be printed are converted to the speed of CMYK data bitmap.As shown in Figure 3, it comprises software function and hardware capability two parts, software function is partly carried out the work before the above-mentioned PDL parsing module, the data of file to be printed are divided into several RGB section images, the hardware capability part is then carried out follow-up conversion work, and its hardware unit includes RIP device 22 and CMS device 24.
Please refer to Fig. 3 to Fig. 5 and be described as follows: simulator is described the specification of RGB bitmap line to RIP device 22, and translation PDL object and order, RIP device 22 produces RGB bitmap line (bitmapline) 23 according to this, as shown in Figure 4, for the object 20 in the RGB section image 13, suppose that its width is W, highly be H, simulator is described RGB bitmap line by a shade, for example, if will describe i bar line, then by left shade W1i, i bar line is depicted in right shade W2i acting in conjunction, and translation PDL object and order, make RIP device 22 produce RGB bitmap line 23 according to this, RIP device 22 also is stored to (section image buffer zone) in the internal memory with it.A special function is arranged in the RIP device, be called DMA chain (chain), in cache memory (cache), store switched RGB bitmap line, be converted to RGB bitmap line or cache memory is full up to all scanning linears of object, just the RGB bitmap of object be sent to section image buffer zone by dma channel.As shown in Figure 5 after RGB section image 13 all objects 20 are converted, the PDL parsing module of simulator transmits section image ripple and finishes label 201 to RIP device 22, at this moment, RIP device 22 issue look-at-mes (INT_EOB) 25 are given CPU, corresponding then interrupt service routine (rip_ISR) notice CMS device 24 (comprises R bitmap 151 via the RGB bitmap 15 that dma channel obtains RGB section image 13, G bitmap 152 and B bitmap 153), and utilize CMS device 24 to produce the CMYK bitmap 19 of CMYK section image, also be that color depth (color depth) is 1,2 or 4 s' C bitmap 191, M bitmap 192, Y bitmap 193 and K bitmap 194, individual other C, M, Y and K bitmap are stored in CMYK section image buffer zone, and C, M, Y and K bitmap are stored into the preceding of internal memory and can compress earlier, by the time be sent to preceding the decompression again of print engine printing, so as to saving memory headroom.When CMS device 24 produces the CMYK bitmap 19 of CMYK section image, CMS device 24 issue look-at-mes (INT_CM) 27 are given CPU, corresponding then interrupt service routine (cms_ISR) can obtain C, M, Y and K bitmap via dma channel by the notice print engine, also is that print engine prints according to CMYK bitmap 19 data.
The prior art that the data of file to be printed are converted to the CMYK data bitmap is to utilize software to carry out or cooperate hardware unit to do in fact, yet most step of its translation data or work are to finish in proper order, and efficient is obviously not high.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of printer to change the method for image processing synchronously, utilize software queue control, make the technology that RIP device and CMS device can synchronous operation, to accelerate the data of file to be printed are converted to the speed of CMYK data bitmap.
To achieve these goals, the invention provides a kind of printer and change the method for image processing synchronously, control the resource of its hardware sequence of operations and section image buffer zone by several software queue (first formation, second formation and the 3rd formation), make RIP device and the CMS device can synchronous operation.Section image buffer zone includes several RGB section image buffer zones, in order to store the RGB bitmap that the RIP device is produced, reaches several YMCK section image buffer zones, and in order to store the CMYK bitmap that the CMS device is produced, its How It Works comprises the following step:
In the time obtaining the right to use of the RGB section image buffer zone that first formation controls, the RIP device produces the RGB bitmap of RGB section image.
After producing the RGB bitmap, interruption of RIP device issue, corresponding interrupt service routine (rip_ISR) transmits the formation of section image identification code to the second, this section image identification code triggers a Thread (thread), be called first Thread, be set in the dma channel between RIP device and the CMS device, so as to transmitting the RGB bitmap apace to the CMS device, utilize the CMS device to produce the CMYK bitmap of CMYK section image then, and discharge the section image identification code of first formation.
After producing the CMYK bitmap, interruption of CMS device issue, corresponding interrupt service routine (cms_ISR) transmits three formations of section image identification code to the, this section image identification code triggers a Thread, be called second Thread, be set in the dma channel between CMS device and the print engine,, reach the section image identification code that discharges the 3rd formation so as to transmitting the CMYK bitmap apace to print engine.
This printer provided by the invention is changed the method for image processing synchronously, controls a plurality of RGB section image buffer zones and a plurality of CMYK section image buffer zone by software queue, makes a RIP device and CMS device energy synchronous operation, and this method comprises the following step:
When obtaining this RGB section image buffer zone of first formation control, carry out this RIP device, and transmit a section image identification code of first formation;
Receive this section image identification code by one second formation, trigger one first Thread and carry out this CMS device, and transmit this section image identification code and this section image identification code that discharges this first formation; And
Receive this section image identification code by one the 3rd formation, trigger one second Thread and transmit a CMYK bitmap, and discharge this section image identification code of the 3rd formation.
Above-mentioned printer is changed the method for image processing synchronously, and wherein this first Thread also comprises the following step:
Confirm whether this second formation obtains this section image identification code;
Confirm whether can obtain a CMYK section image buffer zone;
Be set in the dma channel between this RIP device and this CMS device, so as to transmitting a RGB bitmap to this CMS device; And
Discharge this section image identification code of this first formation.
Above-mentioned printer is changed the method for image processing synchronously, and wherein this second Thread also comprises the following step:
Confirm whether the 3rd formation obtains this section image identification code;
Be set in the dma channel between this CMS device and this print engine, so as to transmitting this CMYK bitmap to this print engine; And
Discharge this section image identification code of the 3rd formation.
Above-mentioned printer is changed the method for image processing synchronously, and wherein this RGB section image buffer zone is controlled by this first formation, in order to store this RGB bitmap that this RIP device produces.
Above-mentioned printer is changed the method for image processing synchronously, and wherein this CMYK section image buffering fauna is controlled by the 3rd formation, in order to store this CMYK bitmap that this CMS device produces.
Above-mentioned printer is changed the method for image processing synchronously, and wherein this CMYK bitmap also comprises a C bitmap, a M bitmap, a Y bitmap and a K bitmap.
Above-mentioned printer is changed the method for image processing synchronously, and wherein the 3rd formation also comprises a C formation, a M formation, a Y formation and a K formation.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the synoptic diagram that existing software is carried out the conversion image processing;
Fig. 2 is the scanning linear synoptic diagram;
Fig. 3 is the synoptic diagram that existing hardware is carried out the conversion image processing;
Fig. 4 is the synoptic diagram of bitmap line for the conversion scanning linear;
Fig. 5 carries out the Organization Chart of conversion image processing for hardware;
Fig. 6 changes the synoptic diagram of the method for image processing synchronously for the printer that the present invention carried;
Fig. 7 changes the simulator operation workflow figure of the method for image processing synchronously for the printer that the present invention carried;
Fig. 8 A changes the first interrupt service routine operation workflow figure of the method for image processing synchronously for the printer that the present invention carried;
Fig. 8 B changes the first thread acts process flow diagram of the method for image processing synchronously for the printer that the present invention carried;
Fig. 9 A changes the second interrupt service routine operation workflow figure of the method for image processing synchronously for the printer that the present invention carried; And
Fig. 9 B changes the second thread acts process flow diagram of the method for image processing synchronously for the printer that the present invention carried.
Embodiment
Please refer to Fig. 6, and be described as follows: the main hardware device that the data-switching of file to be printed is become the CMYK data bitmap is RIP device 22 and CMS device 24, RIP device 22 is in order to convert section image substrate object 20 (image segment-based object) to RGB bitmap 15, and it is stored in the RGB section image buffer zone, CMS device 24 (comprises other C bitmap 191 in order to the CMYK bitmap 19 that the RGB bitmap 15 with RGB section image 13 converts CMYK section image to, M bitmap 192, Y bitmap 193 and K bitmap 194), and with other C, M, Y and K bitmap 191～194 are stored in corresponding C, M, in Y and the K section image buffer zone.(comprise first formation 32, second formation 34 and the 3rd formation 36, wherein the 3rd formation 36 also comprises C formation 361, M formation 362, Y formation 363 and K formation 364 by several software queue in the present invention.) control the resource of its hardware sequence of operations and section image buffer zone, make RIP device 22 and CMS device 24 energy synchronous operations, to accelerate the speed that is converted to the CMYK data bitmap with file to be printed, its How It Works discloses as follows, also is preferred embodiment of the present invention:
Preferred embodiment of the present invention cooperates Fig. 7 to Fig. 9 B to be described as follows:
Fig. 7 changes the simulator operation workflow figure of the method for image processing synchronously for printer that the present invention carried, please refer to Fig. 7 and is described as follows:
Step 700, the PDL parsing module of simulator are responsible for resolving the PDL page or leaf and objects all in the PDL page or leaf are divided into several RGB section images;
Step 710 is checked the right to use (RGB section image buffer zone is controlled by first formation) that whether can obtain a RGB section image buffer zone;
Step 720 if can not obtain RGB section image buffer zone then continue waiting for, till obtaining RGB section image buffer zone, is then changed RGB section image when obtaining a RGB section image buffer zone, and is produced the RGB bitmap of RGB section image;
Step 730 judges whether to be last RGB section image; Then continue to change RGB section image if not last RGB section image, till to the last a RGB section video conversion finishes.
Fig. 8 A changes the first interrupt service routine operation workflow figure of the method for image processing synchronously for printer that the present invention carried, please refer to Fig. 8 A and is described as follows:
Step 800, behind the RGB bitmap of RIP device generation RGB section image, the RIP device will be issued an interruption, and corresponding interrupt service routine (rip_ISP) can transmit section image identification code to second formation;
Step 810, section image identification code triggers a working routine (first Thread).
Fig. 8 B changes the first thread acts process flow diagram of the method for image processing synchronously for printer that the present invention carried, please refer to Fig. 8 B and is described as follows:
Step 820 judges whether second formation obtains a section image identification code, if do not obtain section image identification code then continue to wait for, till obtaining section image identification code; If second formation obtains section image identification code, then forward step 830 to;
Step 830 judges whether to obtain a CMYK section image buffer zone, if can not obtain CMYK section image buffer zone then continue to wait for, till obtaining a CMYK section image buffer zone; If obtain CMYK section image buffer zone, then forward step 840 to;
Step 840 is set the dma channel between RIP device and the CMS device, so as to transmitting the RGB bitmap apace to the CMS device; And
Step 850 discharges the section image identification code of first formation, also be that RGB section image buffer zone can be used by another RGB section image again, and the number of RGB section image buffer zone depends on the space size of Installed System Memory.
Fig. 9 A changes the second interrupt service routine operation workflow figure of the method for image processing synchronously for printer that the present invention carried, please refer to Fig. 9 A and is described as follows:
Fig. 9 B changes the second thread acts process flow diagram of the method for image processing synchronously for the printer that the present invention carried, the CMYK bitmap that the print manager of printer requires to transmit CMYK section image from CMYK section image buffer zone (comprising C, M, Y and K section image buffer zone) is to print engine, please refer to Fig. 9 B and is described as follows:
Step 920 judges whether the 3rd formation obtains a section image identification code, if do not obtain section image identification code then continue to wait for, till obtaining section image identification code; If obtain section image identification code then forward step 930 to;
Step 930 is set the dma channel between CMS device and the print engine, so as to the CMYK bitmap that transmits CMYK section image apace to print engine; And
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (7)
1, a kind of printer is changed the method for image processing synchronously, it is characterized in that, control a plurality of RGB section image buffer zones and a plurality of CMYK section image buffer zone by software queue, make a RIP device and CMS device energy synchronous operation, this method comprises the following step:
When obtaining this RGB section image buffer zone of first formation control, carry out this RIP device, and transmit a section image identification code of first formation;
Receive this section image identification code by one second formation, trigger one first Thread and carry out this CMS device, and transmit this section image identification code and this section image identification code that discharges this first formation; And
Receive this section image identification code by one the 3rd formation, trigger one second Thread and transmit a CMYK bitmap, and discharge this section image identification code of the 3rd formation.
2, printer according to claim 1 is changed the method for image processing synchronously, it is characterized in that, this first Thread also comprises the following step:
Confirm whether this second formation obtains this section image identification code;
Confirm whether can obtain a CMYK section image buffer zone;
Be set in the dma channel between this RIP device and this CMS device, so as to transmitting a RGB bitmap to this CMS device; And
Discharge this section image identification code of this first formation.
3, printer according to claim 1 is changed the method for image processing synchronously, it is characterized in that, this second Thread also comprises the following step:
Confirm whether the 3rd formation obtains this section image identification code;
Be set in the dma channel between this CMS device and this print engine, so as to transmitting this CMYK bitmap to this print engine; And
Discharge this section image identification code of the 3rd formation.
4, printer according to claim 1 is changed the method for image processing synchronously, it is characterized in that, this RGB section image buffer zone is controlled by this first formation, in order to store this RGB bitmap that this RIP device produces.
5, printer according to claim 1 is changed the method for image processing synchronously, it is characterized in that, this CMYK section image buffering fauna is controlled by the 3rd formation, in order to store this CMYK bitmap that this CMS device produces.
6, printer according to claim 1 is changed the method for image processing synchronously, it is characterized in that, this CMYK bitmap also comprises a C bitmap, a M bitmap, a Y bitmap and a K bitmap.
7, printer according to claim 1 is changed the method for image processing synchronously, it is characterized in that, the 3rd formation also comprises a C formation, a M formation, a Y formation and a K formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100062343A CN1321366C (en) | 2004-03-16 | 2004-03-16 | Method of synchronous conversion image processing for printers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100062343A CN1321366C (en) | 2004-03-16 | 2004-03-16 | Method of synchronous conversion image processing for printers |
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| CN1670683A true CN1670683A (en) | 2005-09-21 |
| CN1321366C CN1321366C (en) | 2007-06-13 |
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| CNB2004100062343A Expired - Fee Related CN1321366C (en) | 2004-03-16 | 2004-03-16 | Method of synchronous conversion image processing for printers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092918A (en) * | 2014-07-03 | 2014-10-08 | 苏州佳世达光电有限公司 | Image transformation method and circuit for image transformation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1087217A (en) * | 1992-12-16 | 1994-05-25 | 济南七星技术服务公司 | A kind of high resolution imaging conversion and storage system |
| GB0011506D0 (en) * | 2000-05-12 | 2000-06-28 | Pethania Allarakho | Colour space transformer |
| JP2004038833A (en) * | 2002-07-08 | 2004-02-05 | Ricoh Co Ltd | Printer driver, printing control method and program for executing the same method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104092918A (en) * | 2014-07-03 | 2014-10-08 | 苏州佳世达光电有限公司 | Image transformation method and circuit for image transformation |
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