CN101923898B - HDCP_KEY burning method under insufficient Flash space of display - Google Patents
HDCP_KEY burning method under insufficient Flash space of display Download PDFInfo
- Publication number
- CN101923898B CN101923898B CN 201010240152 CN201010240152A CN101923898B CN 101923898 B CN101923898 B CN 101923898B CN 201010240152 CN201010240152 CN 201010240152 CN 201010240152 A CN201010240152 A CN 201010240152A CN 101923898 B CN101923898 B CN 101923898B
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- hdcp
- key
- display
- flash
- eeprom
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Abstract
The invention relates to an HDCP_KEY burning method under the insufficient Flash space of the display. The method is characterized in that when the display performs SMT stage, HDCP_KEY to be burned is combined with the software of the display to form a burning file, the burning file is burnt to the fixed address of Flash; the space reserved by Flash for the HDCP_KEY for is 512 bytes; when the display is turned on, the software of the display is utilized to completely move HDCP_KEY in Flash to the fixed space of 512 bytes in Eeprom; and when HDCP_KEY is needed to use, the HDCP_KEY moved to Eeprom is used for display. Therefore, when CodeSize is too large, under the premise of not adding extra cost, the two storing and reading codes of Eeprom and Flash are used to solve the problem that HDCP_KEY is burnt many times.
Description
Technical field
The present invention relates to display production application field, particularly the HDCP_key method for burn-recording during display Flash insufficient space.
Background technology
In the display of supporting digital signals such as DVI, HDMI, must support HDCP (High-bandwidth Digital Content Protection) by burning HDCP_KEY: the HDCP content.When production operation, when being kept at FLASH to HDCP_KEY, can merge HDCP_KEY and other data at SMT, be burnt to together among the Flash of 2M byte, this process only needs one procedure; When being kept at Eeprom to HDCP_KEY, need separate again burning successively to HDCP_KEY with program, so just need two procedures.In addition, on display main board, also have the Eeprom of enough capacity to be used for depositing other data.Produce in early stage of display research and development and later stage, during after-sales service, might need the repeatedly different HDCP_KEY of burning, when being kept at Flash to HDCP_KEY; Want to realize repeatedly burning; Need in Flash, to reserve separately at least the space of 4K byte, when running into Code Size when too big, the Flash of a 2M just can't reserve the space of 4K byte and come repeatedly burning HDCP_KEY; Need change more jumbo Flash (such as the 4M byte), increase extra cost.
Summary of the invention
Deficiency in view of above-mentioned technology; HDCP_key method for burn-recording when the purpose of this invention is to provide a kind of display Flash insufficient space; Be implemented in Code Size when excessive; Under the prerequisite that does not increase extra cost, utilization Eeprom and two kinds of storages of Flash are read mode and are solved the repeatedly problem of burning HDCP_KEY.
The present invention adopts following scheme to realize: the HDCP_key method for burn-recording during a kind of display Flash insufficient space; It is characterized in that: carry out the SMT stage wanting the HDCP_KEY of burning and display software to be merged into a recordable paper at display; And the disposable fixed address that is burnt to Flash, described Flash is that the space size that HDCP_KEY reserves is 512 bytes; When display starting, intactly move the HDCP_KEY among the Flash among the Eeprom fixing 512 bytes through the display software, when needs use HDCP_KEY, show with the HDCP_KEY that carries among the Eeprom of back; As the above burning HDCP_KEY of needs secondary, leave the HDCP_KEY that wants burning among the Eeprom fixed position, when needs are used this HDCP_KEY, directly from Eeprom, call.
The present invention is excessive at display Code_Size, when system Flash can not reserve the 4K byte space and accomplishes many burnings of HDCP_KEY, just can be implemented in the SMT stage and accomplishes HDCP_KEY burning first as long as the Flash of system reserves 512 bytes; Burning HDCP_KEY repeatedly in Eeprom when using HDCP_KEY, decides the HDCP_KEY that uses among Flash or the Eeprom through software.The present invention need not the hardware of display is changed, and implementation is simple, and novelty has been saved time and resource for production, has use value preferably.
Description of drawings
Fig. 1 is a principle of the invention synoptic diagram.
Embodiment
As shown in Figure 1; HDCP_key method for burn-recording when the present invention provides a kind of display Flash insufficient space; It is characterized in that: carry out the SMT stage wanting the HDCP_KEY of burning and display software to be merged into a recordable paper at display; And the disposable fixed address that is burnt to Flash, described Flash is that the space size that HDCP_KEY reserves is 512 bytes; When display starting, intactly move the HDCP_KEY among the Flash among the Eeprom fixing 512 bytes through the display software, when needs use HDCP_KEY, show with the HDCP_KEY that carries among the Eeprom of back; As the above burning HDCP_KEY of needs secondary, leave the HDCP_KEY that wants burning among the Eeprom fixed position, when needs are used this HDCP_KEY, directly from Eeprom, call.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (1)
1. the HDCP_key method for burn-recording during a display Flash insufficient space; It is characterized in that: this method is applied to display production; It is to carry out the SMT stage wanting the HDCP_KEY of burning and display software to be merged into a recordable paper at display; And the disposable fixed address that is burnt to Flash, described Flash is that the space size that HDCP_KEY reserves is 512 bytes; When display starting, intactly move the HDCP_KEY among the Flash among the Eeprom fixing 512 bytes through the display software, when needs use HDCP_KEY, show with the HDCP_KEY that carries among the Eeprom of back; As the above burning HDCP_KEY of needs secondary, leave the HDCP_KEY that wants burning among the Eeprom fixed position, when needs are used this HDCP_KEY, directly from Eeprom, call.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240152 CN101923898B (en) | 2010-07-29 | 2010-07-29 | HDCP_KEY burning method under insufficient Flash space of display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240152 CN101923898B (en) | 2010-07-29 | 2010-07-29 | HDCP_KEY burning method under insufficient Flash space of display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101923898A CN101923898A (en) | 2010-12-22 |
| CN101923898B true CN101923898B (en) | 2012-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010240152 Expired - Fee Related CN101923898B (en) | 2010-07-29 | 2010-07-29 | HDCP_KEY burning method under insufficient Flash space of display |
Country Status (1)
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| CN (1) | CN101923898B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103176820B (en) * | 2013-02-27 | 2016-08-03 | 深圳创维数字技术有限公司 | A kind of method for burn-recording of software |
| CN110928559A (en) * | 2019-11-22 | 2020-03-27 | 深圳创维－Rgb电子有限公司 | Data burning method and device, electronic equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885921A (en) * | 2005-06-22 | 2006-12-27 | 厦门华侨电子企业有限公司 | TV set setting USB/memory card interface and its software upgrading method |
| CN101008925A (en) * | 2006-01-16 | 2007-08-01 | 深圳Tcl新技术有限公司 | Storage of identification code and production method therefor |
| CN101630238A (en) * | 2009-08-14 | 2010-01-20 | Tcl通力电子（惠州）有限公司 | HDCP KEY recording device and HDCP KEY recording method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI282140B (en) * | 2005-11-10 | 2007-06-01 | Realtek Semiconductor Corp | Display controller and method for updating parameters of the same |
| TW200842590A (en) * | 2007-04-17 | 2008-11-01 | Novatek Microelectronics Corp | Data access control system and method of memory device |
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2010
- 2010-07-29 CN CN 201010240152 patent/CN101923898B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885921A (en) * | 2005-06-22 | 2006-12-27 | 厦门华侨电子企业有限公司 | TV set setting USB/memory card interface and its software upgrading method |
| CN101008925A (en) * | 2006-01-16 | 2007-08-01 | 深圳Tcl新技术有限公司 | Storage of identification code and production method therefor |
| CN101630238A (en) * | 2009-08-14 | 2010-01-20 | Tcl通力电子（惠州）有限公司 | HDCP KEY recording device and HDCP KEY recording method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101923898A (en) | 2010-12-22 |
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