CN101630238B - HDCP KEY recording method - Google Patents
HDCP KEY recording method Download PDFInfo
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- CN101630238B CN101630238B CN2009101093214A CN200910109321A CN101630238B CN 101630238 B CN101630238 B CN 101630238B CN 2009101093214 A CN2009101093214 A CN 2009101093214A CN 200910109321 A CN200910109321 A CN 200910109321A CN 101630238 B CN101630238 B CN 101630238B
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- flash
- hdcp key
- hdcp
- burning
- burn
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Abstract
The invention provides an HDCP KEY recording device and an HDCP KEY recording method. The HDCP KEY recording device comprises a MCU, a PC and a plurality of IC recording seats, wherein the MCU, the PC and the IC recording seats are mutually connected; and the MCU is connected with and controls the IC recording seats by an electronic switch. The HDCP KEY recording method comprises the following steps: the MCU receives an FLASH ID sent by the PC; the MCU selects an FLASH in a corresponding IC recording seat by the electronic switch and reads out an FLASH ID; the two IDs are compared to judge whether FLASH models are matched or not; and an HDCP KEY is read out from the PC and is written to an appointed position of the FLASH if the FLASH models are matched. The HDCP KEY recording device and the HDCP KEY recording method record a plurality of ICs once and add IC model calibration to ensure the efficiency and the availability of recorded HDCP-KEYs, improve the production efficiency and reduce the cost.
Description
Technical field
The present invention relates to HDCP KEY field, relate in particular to burning device and the method for HDCP KEY.
Background technology
HDCP (High-bandwidth Digital Content Protection, the HDCP technology) be Intel exploitation provide the decoding technique of HDCP for HDMI (HDMI), prior art all is a form one to one to the burning of HDCP KEY (secret key), promptly on the production streamline with special PC operation-interface, give socket burnt-in seat last, HDCP KEY of burning in an IC, such processing mode has two significant disadvantages: first, KEY after the burning there is not verification, can't guarantee the validity of burning KEY, reliability is not high, if burn the KEY mistake, not only will cause the waste of KEY, but also bring hidden danger can for follow-up complete machine production, its maintenance cost that needs will be very high also; The second, need to be provided with specially a station on the product line and finish this operation, efficient is very low, and therefore, prior art is still waiting to improve.
Summary of the invention
The purpose of this invention is to provide a kind of HDCP KEY burning device and method for burn-recording, be intended to solve reliability that exists in the prior art and the shortcoming that efficient is lower, cost is high.
HDCP KEY method for burn-recording provided by the invention may further comprise the steps:
Step a, MCU receives the FLASH ID that PC sends;
Step b, MCU chooses the FLASH in the corresponding socket burnt-in seat and reads FLASH ID by electronic switch;
Step c, more above-mentioned two ID also judge whether the FLASH model mates, if coupling then read a HDCP KEY and write the assigned address of FLASH from PC;
D: read this HDCP KEY more again and calculate its check code after HDCP KEY write FLASH, and whether the check code that calculates this check code and the HDCP KEY that reads from PC mates, if do not match, then wipe the assigned address of this FLASH and write this HDCP KEY again; If verification is errorless, then point out the burning success.
More specifically, carry out described step a and judge whether the IC in the socket burnt-in seat puts back or short circuit earlier before.
More specifically, the described IC of judgement whether put back or the method for short circuit as follows: MCU is with the power supply opening of FLASH and detect the FLASH supply voltage, has illustrated that if voltage is lower than predetermined voltage IC is put back or short circuit phenomenon.
More specifically, among the described step c, checked earlier before writing HDCP KEY whether the assigned address of FLASH is empty, assigned address is that sky then writes HDCP KEY.
More specifically, proceed the burning of next socket burnt-in seat after the described burning success.
More specifically, indicate by pilot lamp after the described burning success.
HDCP KEY burning device provided by the invention and method for burn-recording can be realized the disposable burning of multi-disc IC, increased the verification of IC model simultaneously, the validity check of KEY and the real-time monitoring and control of whole burning process before and after the burning, thereby the HDCP-KEY that guarantees to be burnt to each IC is effectively available, has improved production efficiency and has reduced cost.
Description of drawings
Fig. 1 is the structural representation of HDCP KEY burning device of the present invention;
Fig. 2 is the detailed structure synoptic diagram of HDCP KEY burning device of the present invention;
Fig. 3 is the process flow diagram of HDCP KEY method for burn-recording of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Shown in Fig. 1, the HDCP KEY burning device that preferred embodiment of the present invention provides comprises MCU (microprocessor) 10 (present embodiment adopts HT46RU26), a plurality of IC socket burnt-in seats 11 (this preferred embodiment is 8), PC 12, MCU10 is by the electronic switch connection and control a plurality of socket burnt-in seats 11, MCU10 connects PC 12 by serial ports (com port), owing to have a plurality of socket burnt-in seats 11, therefore HDCP KEY burning device provided by the invention can a burning multi-disc IC, circuit diagram as shown in Figure 2 more specifically, each socket burnt-in seat (111 to 118) all is furnished with two pilot lamp (red light and green light), also comprise button in the circuit, power supply and power interface etc., this does not give unnecessary details.The communication of PC 12 and MCU10 is finished by chip MAX3232, and during PC 12 outputs, the voltage that chip MAX3232 becomes voltage transitions MCU10 to discern is as the input of MCU; During MCU output, chip MAX3232 is voltage transitions the voltage of PC 12 identifications, as the input of PC 12.
Burning when HDCP KEY burning device provided by the invention is realized many HDCP-KEY by MCU10 control, after system powers on, 8 pins of socket burnt-in seat disconnect by control and the remaining circuit of electronic switch and MCU10, to prevent that hot line job from causing damage to each socket burnt-in seat, the situation of the pilot lamp prompting burning on each socket burnt-in seat.Below introduce the burning process of HDCP KEY of the present invention.
Shown in Fig. 3, after SPI FLASH (Serial Peripheral Interface (SPI) flash memory) was put into socket burnt-in seat, system powered on and enters HDCP-KEY burning state.Execution in step 30, check whether IC is put back or short circuit arranged, concrete inspection method is: MCU10 is at first with the power supply opening of FLASH and detect the FLASH supply voltage, if being lower than 3V, voltage illustrated that IC is put back or short circuit phenomenon, MCU10 notice PC 12 end loop, and all red leds of lighting FLASH next door are accused to warn and are disconnected its power supply and finish, this moment, system reentered idle condition, realized short-circuit protection function (needing the staff is further on-the-spot to confirm whether have FLASH to put back or short circuit phenomenon this moment) with this; Normal as crossing the FLASH power supply, MCU10 then thinks does not have IC to put back or short circuit phenomenon, MCU10 receives the FLASH ID that PC 12 sends over, choose the FLASH (for example FLASH1 in the socket burnt-in seat 111) in the corresponding socket burnt-in seat and read FLASH ID by electronic switch then, the ID that sends over this FLASH ID and PC 12 compares, judge in step 31 whether the FLASH model mates, if do not match, the red led of FLASH1 bright (expression occur wrong) then, the 12 current burnings of notice PC are unsuccessful in step 34, and disconnect current socket burnt-in seat, select next socket burnt-in seat to begin burning; If ID coupling, check then whether the sector that FLASH writes KEY is empty, if be empty, then the red led of FLASH1 is bright in step 34, and the 12 current burnings of notice PC get nowhere, and disconnect current socket burnt-in seat, select next socket burnt-in seat to begin burning; If this sector is empty, then read a HDCP KEY from PC 12, and in step 32, HDCP KEY is write the assigned address of sector, the bright expression of green indicating lamp writes success then, HDCPKEY write read this KEY again behind the FLASH and calculate its check code and whether mate (promptly in step 33, calculating check code, each BYTE of KEY file disregarded to overflow add up, overflow if having, then getting low 16 bit continues to add up as summand, low 16 of the result who adds up is exactly the check code of this KEY file), if do not match, then wipe this sector and read in this KEY again, and execution in step 33 once more; If verification is errorless, then the green indicating lamp of this socket burnt-in seat is bright, and in step notice PC 12 burnings success, loop ends disconnects current socket burnt-in seat.Execution in step 35 then, judge whether that burning finishes (judging promptly in the present embodiment whether n equals 8), if be not equal to 8, i.e. burning is not finished, and the sequence number of KEY is added 1, and MCU10 operates next socket burnt-in seat, so circulation.If equal 8, represent that then the 8th FLASH burning finishes, 12 loop ends of MCU10 notice PC, green indicating lamp is bright, and deenergization also finishes.
It is emphasized that the normal bright expression burning of red led is carried out in the burning process, forbid it is carried out associative operation; 8 FLASH will all cut off the power supply with all lines that 8 FLASH link to each other after all burning is finished, and light the green indicating lamp on beginning button (with reference to figure 2) next door, and expression can be taken off FLASH.
PC 12 is cut apart the HDCP-KEY bag, thereby make single HDCP-KEY independent, and HDCP-KEY is numbered, after the intact HDCP-KEY of successful burning, can carry out mark to it, the HDCP-KEY of un-marked is all got in each burning, guarantees to be burnt to the uniqueness of the HDCP-KEY among the IC.And in whole burning process,, and reflect the burning state of corresponding IC by the pilot lamp on the PC software with the real-time burning state of noting every IC.A plurality of socket burnt-in seats 11 can be placed multi-disc IC, promptly only need last electricity, just can realize the disposable burning of multi-disc IC.
In sum, whether the method for burn-recording of HDCP KEY provided by the invention can automatically detect IC when powering on placement is normal, puts or place not in place if any counter, and all red lights can be lighted, and deenergization simultaneously is to realize circuit protection; Carry out after the burning, read the HDCP KEY that is burnt among the IC, judge whether HDCP KEY is effective,, will re-execute the burning process, confirm to be burnt to the validity of the KEY of IC with this if invalid.If first burning finished, light corresponding green indicating lamp, to show the burning success, disconnect this IC power supply, notify PC burning success simultaneously, PC can carry out mark to the KEY of current burning, if burning failure, then PC 12 can not carry out mark to this KEY, has avoided the waste of HDCP KEY.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within the protection domain of claim of the present invention.
Claims (6)
1. HDCP KEY method for burn-recording is characterized in that may further comprise the steps:
Step a, MCU receives the FLASH ID that PC sends;
Step b, MCU chooses the FLASH in the corresponding socket burnt-in seat and reads FLASH ID by electronic switch;
Step c, more above-mentioned two ID also judge whether the FLASH model mates, if coupling then read a HDCP KEY and write the assigned address of FLASH from PC;
D: read this HDCP KEY more again and calculate its check code after HDCP KEY write FLASH, and whether the check code that calculates this check code and the HDCP KEY that reads from PC mates, if do not match, then wipe the assigned address of this FLASH and write this HDCP KEY again; If verification is errorless, then point out the burning success.
2. HDCP KEY method for burn-recording according to claim 1 is characterized in that, carries out described step a and judges whether the IC in the socket burnt-in seat puts back or short circuit earlier before.
3. HDCP KEY method for burn-recording according to claim 2, it is characterized in that, the described IC of judgement whether put back or the method for short circuit as follows: MCU is with the power supply opening of FLASH and detect the FLASH supply voltage, has illustrated that if voltage is lower than predetermined voltage IC is put back or short circuit phenomenon.
4. HDCP KEY method for burn-recording according to claim 1 is characterized in that, among the described step c, checks earlier before writing HDCP KEY whether the assigned address of FLASH is empty, and assigned address is that sky then writes HDCP KEY.
5. HDCP KEY method for burn-recording according to claim 1 is characterized in that, proceeds the burning of next socket burnt-in seat after the described burning success.
6. HDCP KEY method for burn-recording according to claim 1 is characterized in that, indicate by pilot lamp described burning success back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101093214A CN101630238B (en) | 2009-08-14 | 2009-08-14 | HDCP KEY recording method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101093214A CN101630238B (en) | 2009-08-14 | 2009-08-14 | HDCP KEY recording method |
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| CN101630238A CN101630238A (en) | 2010-01-20 |
| CN101630238B true CN101630238B (en) | 2011-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101093214A Expired - Fee Related CN101630238B (en) | 2009-08-14 | 2009-08-14 | HDCP KEY recording method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016127606A1 (en) * | 2015-02-11 | 2016-08-18 | 京东方科技集团股份有限公司 | Burning method and burning system |
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| CN101853703B (en) * | 2010-06-09 | 2013-09-04 | 吟飞科技(江苏)有限公司 | U-disc burner |
| CN101887754A (en) * | 2010-06-29 | 2010-11-17 | 深圳创维－Rgb电子有限公司 | Method and device for burning HDCP Key and digital equipment |
| CN101923898B (en) * | 2010-07-29 | 2012-12-26 | 福建捷联电子有限公司 | HDCP_KEY burning method under insufficient Flash space of display |
| CN102914981A (en) * | 2011-08-05 | 2013-02-06 | 鸿富锦精密工业（深圳）有限公司 | Chip burning detection system |
| CN102665089B (en) * | 2012-03-29 | 2017-11-07 | 深圳微普特信息技术有限公司 | A kind of HDCP function test methods, measured terminal and detection terminal |
| CN104347116B (en) * | 2013-07-24 | 2018-11-06 | 神讯电脑(昆山)有限公司 | Battery chip burning device |
| CN103440148B (en) * | 2013-08-27 | 2017-04-12 | 无锡泛太科技有限公司 | Device and method for programming multiple single-chip microcomputer programs |
| CN103428560B (en) * | 2013-08-29 | 2017-03-01 | 广州创维平面显示科技有限公司 | A kind of method of KEY code burning and device |
| CN104090789A (en) * | 2014-06-27 | 2014-10-08 | 国家电网公司 | FLASH programming device allowing connection with multiple modules |
| CN104200842A (en) * | 2014-08-21 | 2014-12-10 | 太仓市同维电子有限公司 | Chip burning method and system |
| CN104991848A (en) * | 2015-07-13 | 2015-10-21 | 深圳创维－Rgb电子有限公司 | Method and system for implementing Key code burning on basis of MSComm control |
| CN105187914B (en) * | 2015-07-29 | 2018-07-13 | 深圳市芯智科技有限公司 | The method of quick burned HDCPKEY |
| CN107391212A (en) * | 2017-08-08 | 2017-11-24 | 英业达科技有限公司 | Burning device and its guard method |
| CN109697073B (en) * | 2018-12-28 | 2021-06-18 | 北京深思数盾科技股份有限公司 | Chip burning method and system |
| CN109949054B (en) * | 2019-03-18 | 2024-03-19 | 深圳创维－Rgb电子有限公司 | Key code determination method, device, equipment and storage medium |
| CN111158710B (en) * | 2019-12-30 | 2023-08-25 | 杭州迪普科技股份有限公司 | Program programming method, device and network equipment |
| TWI736201B (en) | 2020-04-01 | 2021-08-11 | 美商第一檢測有限公司 | Chip testing circuit and testing method thereof |
| CN114079808B (en) * | 2020-08-12 | 2023-07-04 | 深圳市兆驰数码科技股份有限公司 | Multi-channel set top box serial port number burning device and method |
-
2009
- 2009-08-14 CN CN2009101093214A patent/CN101630238B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016127606A1 (en) * | 2015-02-11 | 2016-08-18 | 京东方科技集团股份有限公司 | Burning method and burning system |
| EP3258372A4 (en) * | 2015-02-11 | 2018-12-19 | Boe Technology Group Co. Ltd. | Burning method and burning system |
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| Publication number | Publication date |
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| CN101630238A (en) | 2010-01-20 |
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