CN100367222C - System and method for evaluating control card for printer - Google Patents
System and method for evaluating control card for printer Download PDFInfo
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- CN100367222C CN100367222C CNB2004101028532A CN200410102853A CN100367222C CN 100367222 C CN100367222 C CN 100367222C CN B2004101028532 A CNB2004101028532 A CN B2004101028532A CN 200410102853 A CN200410102853 A CN 200410102853A CN 100367222 C CN100367222 C CN 100367222C
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Abstract
The present invention discloses an evaluating system for control cards of printers. A control card receives printing data sent from a computer, data obtained by carrying out the processing, such as interpretation, bus protocol conversion, etc. on the printing data is sent to a simulator, and the obtained data is input to the computer after the simulator carries out bus protocol conversion on the data. The computer interprets self printing data, and the control card is evaluated by the data obtained through interpretation and the data sent from the simulator. The present invention also discloses an evaluating method for control cards of printers. Bus protocol conversion is carried out again on the data obtained by carrying out the processing, such as interpretation, bus protocol conversion, etc. on the printing data received by the control card from the computer, and data is sent to the computer. After the computer receives the data, the control card is evaluated by the data obtained by interpreting the received data and the self printing data. Both the evaluating system for control cards and the evaluating method of the present invention can obviously improve the efficiency and the accuracy of the evaluation of the control card.
Description
Technical field
The present invention relates to computer technology, be specifically related to a kind of evaluating system and evaluating method of control card for printer.
Background technology
The printer of using mainly comprises two hardware units at present: a hardware unit is a control card, and another hardware unit is a movement.Wherein, control card is a kind of Embedded signal processing card, is inserted in going up of movement usually and controls in the draw-in groove position, and link to each other with movement by data-interface; In addition, control card also links to each other with computing machine, and the data-interface between control card and the computing machine is generally parallel port, USB (universal serial bus) (USBUniversal Serial Bus) interface, network interface etc.Control card is used to receive the print data from the support computer bus agreement of computing machine, and this print data made an explanation and bus protocol conversion, make this print data become the data bitmap of back printer bus protocol, and generate according to the form of print data and to print control command, should print control command afterwards and data bitmap sends to movement.Described support computer bus agreement is meant: the bus protocol form that computing machine can be discerned, as: external component interconnected bus (PCI) agreement, usb protocol etc.; The back printer bus protocol is meant: the bus protocol form that movement can be discerned.
Movement is an actual hardware unit of carrying out printing in the printer, prints according to printing control command and data bitmap from control card.
The principle that control card described above and movement print operation as shown in Figure 1, Fig. 1 is that prior art is printed schematic diagram.
When computing machine 101 was wanted print file, the content that computing machine 101 comprises in will typescripts sent to control card 102 with the form of print data.Control card 102 is received after the print data of computing machine 101, make an explanation to this print data, makes this print data be interpreted as the data bitmap that movement 103 can be discerned.Above-mentioned print data exists with forms such as ASC II sign indicating numbers usually, and the then common binary number form with 0,1 of above-mentioned data bitmap exists.Wherein, the bitmap point that 0 representative is not printed, the bitmap point that 1 representative is not printed.
Simultaneously, the back printer bus protocol not because above-mentioned data bitmap is supported the computer bus agreement, so control card 102 also will carry out the bus protocol conversion to this data bitmap, makes the data bitmap of supporting the computer bus agreement be converted to the data bitmap of back printer bus protocol.
When control card 102 is finished described data interpretation and bus protocol conversion, structure according to the data content of wanting typescripts to comprise generates the corresponding control command of printing, after as: control card 102 data interpretation of certain the ASC II of the delegation code type in the file being data bitmap, generate a line replace command, then carry out the data interpretation operation of next line again.
After finishing aforesaid operations, the data bitmap that control card 102 will be printed control command and back printer bus protocol sends to movement 103.Certainly, the data bitmap and corresponding the printing between the control command of finishing explanation will have certain time interval, make movement 103 receive data bitmap earlier and print this data bitmap, receive corresponding printing control command afterwards, and then carry out this order; Have afterwards and can also can receive follow-up data bitmap and print control command accordingly.
Like this, movement 103 just can normally be printed after receiving printing control command and data bitmap.As: control card 102 has sent line replace command to movement 103 again after movement 103 sends data bitmap 101100111.Movement 103 is after receiving data bitmap so, just in the same delegation of paper, print some such data points---in data point of first data point position printing of this row, vacating a data point position does not afterwards print, position, two consecutive numbers strong points print data point afterwards, vacate two data point positions again and do not print, position, three consecutive numbers strong points print data point afterwards.After having printed the respective counts strong point of this delegation, because movement 103 received line replace command, so movement 103 finishes the printing of current lines, position that will print data point moves on to next line.
Like this, movement 103 has just been finished final printing, and movement 103 is finished the paper of printing with output, and printed file content is then arranged on the paper.The typescripts content is generally literal or image at present.
By the above as can be known, in whole printing flow process, control card 102 need print the explanation of data, the conversion of print data bus protocol and the generation of printing control command; And movement 103 just prints according to data bitmap and printing control command from control card 102.So, control card 102 for print can normally carry out and the good bad influence of print quality very big, it is more important that control card 102 is compared movement 103.
Therefore, must guarantee that when producing or use control card 102 control card 102 can operate as normal.Whether working properly in order to know control card 102, will evaluate and test control card 102.At present the evaluating method of using is that the data that test sheets that computing machine 101 will be printed comprises send to control card 102, control card 102 becomes data bitmap to go forward side by side after the row bus protocol conversion data interpretation of receiving, this data bitmap sends to movement 103 together with the printing control command that generates, movement 103 prints according to data bitmap that receives and printing control command, and the test sheets of printing is finished in final output.When evaluating and testing each control card, similarly test sheets will be printed 6,7 usually, and every test sheets is all printed different characters or picture material, with a certain work quality of display control card 102.
Afterwards, whether working properly literal or picture material that every test sheets that operating personnel's manual analysis is printed comprises to judge the height of the current and work quality of control card 102.As: should print horizontal linear and vertical straight line if certain is opened in the test sheets, but line segment dislocation or small radian are arranged in the straight line that operating personnel find finally to print, operating personnel think that then control card 102 work are undesired or work quality is lower; If certain every each character pitch that will print of going of opening test sheets is 2 centimetres, and the character pitch that has in certain row that operating personnel find finally to print is not 2 centimetres, operating personnel can think that also control card 102 work are undesired or work quality is lower.
By the above as seen, the evaluation and test work of control card 102 is manually carried out, and will take time and print test sheets, and it is very low therefore to evaluate and test efficient.In addition; the problem that exists in the test sheets that prints; might not be or just control card 102 work are undesired or work quality is lower causes; but because mechanical shaking or response lag have appearred in movement 103 when printing, that is: the problem that exists in the test sheets is might be also relevant with the current work quality of movement 103.Whether height and control card 102 work that this test sheets that makes operating personnel be difficult to print by observation is is exactly evaluated and tested control card 102 work at present quality are normal.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of evaluating system of control card for printer, to improve the efficient and the accuracy of evaluation and test control card.
In view of this, another object of the present invention is to provide a kind of evaluating method of control card for printer, to improve the efficient and the accuracy of evaluation and test control card.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of evaluating system of control card for printer, this system comprises:
Computing machine, be used for by self with control card between be connected print data from the computer bus agreement to control card that send to support, and this print data is construed to data bitmap and generate prints control command, use this data bitmap and print control command with from the data bitmap of emulator and print control command evaluation and test control card;
Control card is used for the print data from computing machine is made an explanation and bus protocol conversion, makes this print data become the data bitmap of back printer bus protocol, generates the printing control command of back printer bus protocol simultaneously;
Emulator is used to receive the data bitmap of control card and prints control command, and with this data bitmap and print and send to described computing machine after control command is converted to the data bitmap of supporting the computer bus agreement and prints control command.
Being connected between described computing machine and the control card is to connect by parallel port, USB (universal serial bus) or network interface.
Described emulator comprises:
The movement bus interface is used to receive through described control card and explains the data bitmap of gained and the printing control command of generation, and this data bitmap and printing control command are sent to bridging chip;
Bridging chip, be used for data bitmap and printing control command from the movement bus interface are carried out described bus protocol conversion, data bitmap and the printing control command of finishing the support computer bus agreement of bus protocol conversion sent to the computer bus interface;
The computer bus interface is used for data bitmap and printing control command from bridging chip are sent to described computing machine.
Described bridging chip comprises:
Movement bus processing unit, be used to receive data bitmap and printing control command from described movement bus interface, this data bitmap and printing control command are carried out the bus protocol conversion, data bitmap and the printing control command of finishing the support computer bus agreement of bus protocol conversion sent to latch;
Latch is used to store data bitmap and printing control command from movement bus processing unit, and this data bitmap and printing control command are sent to the computer bus bridge;
The computer bus bridge is used to receive data bitmap and printing control command from latch, and this data bitmap and printing control command are sent to described computer bus interface.
The invention also discloses a kind of evaluating method of control card for printer, this method may further comprise the steps:
A. computing machine sends the print data of supporting the computer bus agreement to control card, and control card makes an explanation to this print data and the bus protocol conversion, the data bitmap of supported printer bus protocol, and generate the printing control command;
B. emulator receives the data bitmap of control card and prints control command, and this data bitmap and printing control command are converted to the data bitmap of supporting the computer bus agreement and print control command, sends to computing machine again;
C. computing machine will be interpreted as data bitmap and generate printing control command from the print data that will print in step a, use this data bitmap and printing control command and the data bitmap of receiving again and print control command evaluation and test control card.
Among the step a, computing machine to the method that control card sends described print data is:
Computing machine sends print data via self parallel port, USB (universal serial bus) or network interface to control card.
Step b comprises:
B1. the movement bus interface in the emulator receives data bitmap and the printing control command from control card, and this data bitmap and printing control command are sent to bridging chip;
B2. bridging chip receives the described data bitmap of movement bus interface and prints control command, and this data bitmap and printing control command are converted to the data bitmap of supporting the computer bus agreement and print control command, sends to the computer bus interface again;
B3. the computer bus interface sends to described computing machine with data bitmap and the printing control command of receiving.
Step b2 comprises:
B21. the movement bus processing unit in the bridging chip receives data bitmap and the printing control command from described movement bus interface, and with this data bitmap and print control command and be converted to the data bitmap of supporting the computer bus agreement and print control command, send to latch stores again;
B22. the described data bitmap that will store via the computer bus bridge in the bridging chip of latch and print control command and send to described computer bus interface.
Among the step c, computing machine to the method that control card carries out described evaluation and test is:
C1. computing machine combines the data bitmap of self explaining gained and obtains bitmap with the printing control command of generation, and data bitmap and the combination of printing control command that receives obtained bitmap;
C2. computing machine compares two parts of bitmaps that obtain among the step c1, according to the height of comparative result evaluation and test control card work at present quality.
Compared with prior art, the evaluating system of control card for printer provided by the present invention, make control card to the print data that is received from computing machine make an explanation, processing such as bus protocol conversion back gained data can be undertaken by the emulator that links to each other with control card being input in the computing machine after bus protocol is changed; Computing machine makes an explanation to the print data of self, and uses and explain the gained data and evaluate and test control card from the described data of emulator, has improved the efficient and the accuracy of evaluation and test control card.
The evaluating method of control card for printer provided by the present invention, the print data that makes control card will be received from computing machine makes an explanation, bus protocol conversion etc. handled back gained data, can carry out the bus protocol conversion once more and send to computing machine; After computing machine receives these data, use these data and self print data and finish the data evaluation and test control card of explaining gained, the efficient and the accuracy that have improved the evaluation and test control card.
Description of drawings
Fig. 1 prints schematic diagram for prior art;
Fig. 2 is control card for printer evaluating system figure of the present invention;
Fig. 3 carries out bus protocol transfer principle figure for bridging chip in house software logic module of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments to the detailed description of the invention.
The evaluating system of control card for printer provided by the present invention, make control card to the print data that is received from computing machine make an explanation, processing such as bus protocol conversion back gained data can be undertaken by the emulator that links to each other with control card being input in the computing machine after bus protocol is changed; Computing machine makes an explanation to the print data of self, and uses and explain the gained data and evaluate and test control card from the described data of emulator.
The evaluating method of control card for printer provided by the present invention, the print data that makes control card will be received from computing machine makes an explanation, bus protocol conversion etc. handled back gained data, can carry out the bus protocol conversion once more and send to computing machine; After computing machine receives these data, use these data and self print data and finish the data evaluation and test control card of explaining gained.
Referring to Fig. 2, Fig. 2 is control card for printer evaluating system figure of the present invention.Wherein, computing machine 201 links to each other by interfaces such as parallel port, USB interface, network interfaces with control card 202, with to control card 202 output datas; The output terminal of control card 202 links to each other with movement bus interface 204 in the emulator 203, and 204 of movement bus interface link to each other with computer bus interface 206 via bridging chip 205; 206 input ends with computing machine 201 of computer bus interface link to each other, to import data to computing machine 201.
When computing machine 201 was wanted print file, the content that computing machine 201 comprises in will typescripts sent to control card 202 with the form of print data, preserves the print What of wanting that comprises in this document simultaneously.Can want in the internal memory that print What is kept at computing machine 201 or in the hard disk described, also can be with in other storer that should want print What to be kept to link to each other with computing machine 201.Control card 202 is received after the print data of computing machine 201 this print data is made an explanation, and makes this print data be interpreted as data bitmap.Above-mentioned print data exists with the form of ASC II sign indicating number usually, and the then common binary number form with 0,1 of above-mentioned data bitmap exists.Wherein, the bitmap point that 0 representative is not printed, the bitmap point that 1 representative is not printed.
Simultaneously, control card 202 also will carry out the bus protocol conversion to above-mentioned data bitmap, makes the data bitmap of supporting the computer bus agreement be converted to the data bitmap of back printer bus protocol.
When control card 202 is finished described data interpretation and bus protocol conversion, structure according to the data content of wanting typescripts to comprise generates the corresponding control command of printing, after as: control card 202 data interpretation of certain the ASC II of the delegation code type in the file being data bitmap, generate a line replace command, then carry out the data interpretation operation of next line again.
After finishing aforesaid operations, the data bitmap that control card 202 will be printed control command and back printer bus protocol sends to the movement bus interface 204 in the emulator 203, and this movement bus interface 204 is data-interfaces of back printer bus protocol.The above-mentioned printing control command that movement bus interface 204 will be received and the data bitmap of back printer bus protocol send to bridging chip 205, the data bitmap of the back printer bus protocol that 205 pairs of bridging chips are received and printing control command are carried out the bus protocol conversion operations, the data bitmap and the printing control command of back printer bus protocol are converted to the data bitmap and the printing control command of support computer bus agreement.
Data bitmap and printing control command that bridging chip 205 will be finished the support computer bus agreement of bus protocol conversion send to computer bus interface 206, and this computer bus interface 206 is data-interfaces of supporting the computer bus agreement.The data bitmap of the above-mentioned support computer bus agreement that computer bus interface 206 will be received and printing control command send to computing machine 201.
In actual applications, computing machine 201 can be interpreted as data bitmap with this print data in any time after control card 202 sends print data, and generates the corresponding control command of printing according to the form of print What.
Afterwards, computing machine 201 with the printing control command of self explaining the data bitmap of gained and generation with from the data bitmap of computer bus interface 206 and print control command and compare, the height of and work quality whether normal with 202 works at present of evaluation and test control card.
Adaptable comparative approach is a lot, wherein a kind of comparative approach is exactly a computing machine 201 with the combine bitmap of gained of the printing control command of self explaining the data bitmap of gained and generation, with the data bitmap that receives and print the combine bitmap of gained of control command and compare, whether normal whether identical, the height of and work quality with 202 works at present of evaluation and test control card if judge printing control command.
As: computing machine 201 is explained and is obtained generating line replace command after the data bitmap 111000, and explanation obtains data bitmap 1010; Computing machine 201 is received line replace command after receiving data bitmap 11100, and receives data bitmap 0 and receive line replace command, receives data bitmap 1010 at last.As seen, computing machine 201 is explained the combine bitmap of gained of the line replace command of the data bitmap that obtains and generation, and the combine bitmap of gained of data bitmap of receiving with computing machine 201 and line replace command has certain difference: the bitmap that computing machine 201 obtains has two row; The bitmap that computing machine 201 is received then has triplex row, and first row lacks a data point.This shows that mistake has taken place control card 202 when work.
Therefore, computing machine 201 determines that control card 202 work at present quality are lower, certainly, if but above-mentioned this error rate has surpassed the allowed band that is provided with, and 201 definite control card 202 works at present of computing machine are undesired; If above-mentioned two parts of bitmap difference are less even identical, 201 definite control card 202 works at present of computing machine are normal, and work quality is higher.
Above-mentioned comparative approach is the comparative approach commonly used after computing machine 201 is received data bitmap and printed control command, is used for control card 202 is evaluated and tested.Except this evaluation and test mode, computing machine 201 can also be used professional software and will self explain that gained data bitmap and the data bitmap of receiving compare with forms such as bitmap waveforms respectively.So that control card 202 is evaluated and tested.
Among Fig. 2, bridging chip 205 is programming devices, usually by this chip is programmed, in bridging chip 205, to make up the software logic module, the application software logic module realizes the bus protocol conversion of data, the principle that described software logic module is carried out bus protocol conversion as shown in Figure 3, Fig. 3 carries out bus protocol transfer principle figure for bridging chip in house software logic module of the present invention.
Movement bus processing unit 301 among Fig. 3, latch 302, computer bus bridge 303 are respectively the software logic modules that makes up with the form of software programming in the described bridging chip.Wherein, the movement bus processing unit 301 of back printer bus protocol is used for receiving data bitmap and the printing control command of the movement bus interface 204 of Fig. 2 to the control card side of its transmission, and these data are carried out protocol conversion operate, the data that will finish protocol conversion again send to latch 302 and store.Afterwards, support the computer bus bridge 303 of computer bus agreement to read the data of storage in the latch 302, and these data are sent to computer bus interface 206 among Fig. 2 as the computer-side data, send to computing machine by this interface.
As seen, above-mentioned evaluating system and evaluating method end the dependence upon and print paper and evaluate and test control card, but directly evaluate and test control card by computing machine according to related data, and evaluation and test efficient is improved significantly; And computing machine is is only evaluated and tested control card according to data such as data bitmap relevant with control card and printing control commands, the applied data of evaluation and test control card are no longer influenced by the work quality of other devices such as movement, and the evaluation and test accuracy is improved significantly.
By the above as can be seen, the evaluating system of control card for printer provided by the present invention and evaluating method, the efficient and the accuracy that have all obviously improved the evaluation and test control card.The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the evaluating system of a control card for printer is characterized in that, this system comprises:
Computing machine, be used for by self with control card between be connected print data from the computer bus agreement to control card that send to support, and this print data is construed to data bitmap and generate prints control command, use this data bitmap and print control command with from the data bitmap of emulator and print control command evaluation and test control card;
Control card is used for the print data from computing machine is made an explanation and bus protocol conversion, makes this print data become the data bitmap of back printer bus protocol, generates the printing control command of back printer bus protocol simultaneously;
Emulator is used to receive the data bitmap of control card and prints control command, and with this data bitmap and print and send to described computing machine after control command is converted to the data bitmap of supporting the computer bus agreement and prints control command.
2. the system as claimed in claim 1 is characterized in that, being connected between described computing machine and the control card is to connect by parallel port, USB (universal serial bus) or network interface.
3. the system as claimed in claim 1 is characterized in that, described emulator comprises:
The movement bus interface is used to receive through described control card and explains the data bitmap of gained and the printing control command of generation, and this data bitmap and printing control command are sent to bridging chip;
Bridging chip, be used for data bitmap and printing control command from the movement bus interface are carried out described bus protocol conversion, data bitmap and the printing control command of finishing the support computer bus agreement of bus protocol conversion sent to the computer bus interface;
The computer bus interface is used for data bitmap and printing control command from bridging chip are sent to described computing machine.
4. system as claimed in claim 3 is characterized in that, described bridging chip comprises:
Movement bus processing unit, be used to receive data bitmap and printing control command from described movement bus interface, this data bitmap and printing control command are carried out the bus protocol conversion, data bitmap and the printing control command of finishing the support computer bus agreement of bus protocol conversion sent to latch;
Latch is used to store data bitmap and printing control command from movement bus processing unit, and this data bitmap and printing control command are sent to the computer bus bridge;
The computer bus bridge is used to receive data bitmap and printing control command from latch, and this data bitmap and printing control command are sent to described computer bus interface.
5. the evaluating method of a control card for printer is characterized in that, this method may further comprise the steps:
A. computing machine sends the print data of supporting the computer bus agreement to control card, and control card makes an explanation to this print data and the bus protocol conversion, the data bitmap of supported printer bus protocol, and generate the printing control command;
B. emulator receives the data bitmap of control card and prints control command, and this data bitmap and printing control command are converted to the data bitmap of supporting the computer bus agreement and print control command, sends to computing machine again;
C. computing machine will be interpreted as data bitmap and generate printing control command from the print data that will print in step a, use this data bitmap and printing control command and the data bitmap of receiving again and print control command evaluation and test control card.
6. method as claimed in claim 5 is characterized in that, among the step a, computing machine to the method that control card sends described print data is:
Computing machine sends print data via self parallel port, USB (universal serial bus) or network interface to control card.
7. method as claimed in claim 5 is characterized in that step b comprises:
B1. the movement bus interface in the emulator receives data bitmap and the printing control command from control card, and this data bitmap and printing control command are sent to bridging chip;
B2. bridging chip receives the described data bitmap of movement bus interface and prints control command, and this data bitmap and printing control command are converted to the data bitmap of supporting the computer bus agreement and print control command, sends to the computer bus interface again;
B3. the computer bus interface sends to described computing machine with data bitmap and the printing control command of receiving.
8. method as claimed in claim 7 is characterized in that step b2 comprises:
B21. the movement bus processing unit in the bridging chip receives data bitmap and the printing control command from described movement bus interface, and with this data bitmap and print control command and be converted to the data bitmap of supporting the computer bus agreement and print control command, send to latch stores again;
B22. the described data bitmap that will store via the computer bus bridge in the bridging chip of latch and print control command and send to described computer bus interface.
9. method as claimed in claim 5 is characterized in that, among the step c, computing machine to the method that control card carries out described evaluation and test is:
C1. computing machine combines the data bitmap of self explaining gained and obtains bitmap with the printing control command of generation, and data bitmap and the combination of printing control command that receives obtained bitmap;
C2. computing machine compares two parts of bitmaps that obtain among the step c1, according to the height of comparative result evaluation and test control card work at present quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101028532A CN100367222C (en) | 2004-12-24 | 2004-12-24 | System and method for evaluating control card for printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101028532A CN100367222C (en) | 2004-12-24 | 2004-12-24 | System and method for evaluating control card for printer |
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| CN1797355A CN1797355A (en) | 2006-07-05 |
| CN100367222C true CN100367222C (en) | 2008-02-06 |
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| CNB2004101028532A Expired - Fee Related CN100367222C (en) | 2004-12-24 | 2004-12-24 | System and method for evaluating control card for printer |
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| CN (1) | CN100367222C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023914B (en) * | 2009-09-18 | 2014-03-26 | 鸿富锦精密工业（深圳）有限公司 | Printer interface detection device |
| CN106541716B (en) * | 2015-09-17 | 2018-09-14 | 北大方正集团有限公司 | A kind of nozzle emulation board and printing test method for test printing control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05104833A (en) * | 1991-10-18 | 1993-04-27 | Nec Corp | Printer checking system |
| CN1175735A (en) * | 1996-07-03 | 1998-03-11 | 英特尔公司 | Computer system providing universal architecture adaptive to variety of processor types and bus protocols |
| CN1262483A (en) * | 2000-01-10 | 2000-08-09 | 深圳奥士达电子有限公司 | Ideal high-speed digital code printer interface |
| CN1089463C (en) * | 1994-11-30 | 2002-08-21 | 国际商业机器公司 | Bridge between two buses of computer system |
| US20030025490A1 (en) * | 2001-08-02 | 2003-02-06 | Tzu-Pei Chen | Method for verifying hardware circuits through simulation |
| JP2003223306A (en) * | 2002-01-30 | 2003-08-08 | Canon Inc | Printer emulate device, printer emulate method, storage medium, and its program |
-
2004
- 2004-12-24 CN CNB2004101028532A patent/CN100367222C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05104833A (en) * | 1991-10-18 | 1993-04-27 | Nec Corp | Printer checking system |
| CN1089463C (en) * | 1994-11-30 | 2002-08-21 | 国际商业机器公司 | Bridge between two buses of computer system |
| CN1175735A (en) * | 1996-07-03 | 1998-03-11 | 英特尔公司 | Computer system providing universal architecture adaptive to variety of processor types and bus protocols |
| CN1262483A (en) * | 2000-01-10 | 2000-08-09 | 深圳奥士达电子有限公司 | Ideal high-speed digital code printer interface |
| US20030025490A1 (en) * | 2001-08-02 | 2003-02-06 | Tzu-Pei Chen | Method for verifying hardware circuits through simulation |
| JP2003223306A (en) * | 2002-01-30 | 2003-08-08 | Canon Inc | Printer emulate device, printer emulate method, storage medium, and its program |
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| Publication number | Publication date |
|---|---|
| CN1797355A (en) | 2006-07-05 |
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