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CN103324550B - High bandwidth digital content protection key data backup method and apparatus for testing and - Google Patents

High bandwidth digital content protection key data backup method and apparatus for testing and Download PDF

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CN103324550B
CN103324550B CN 201210078511 CN201210078511A CN103324550B CN 103324550 B CN103324550 B CN 103324550B CN 201210078511 CN201210078511 CN 201210078511 CN 201210078511 A CN201210078511 A CN 201210078511A CN 103324550 B CN103324550 B CN 103324550B
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CN 201210078511
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CN103324550A (en )
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苏倬立
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冠捷投资有限公司
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Abstract

一种高带宽数字内容保护密钥数据检验与备份方法,包含:(A)读取一第一存储区的内容;(B)判断该第一存储区的内容是否属于有效的一高带宽数字内容保护密钥数据;(C)当该第一存储区的内容不属于有效的该高带宽数字内容保护密钥数据时,则读取一第二存储区的内容;(D)判断该第二存储区的内容是否属于有效的该高带宽数字内容保护密钥数据;及(E)当该第二存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则以该第二存储区的内容作为一已核对的高带宽数字内容保护密钥数据。 Test key data backup method and a high-bandwidth digital content protection, comprising: (A) reads the contents of a first memory area; (B) determining the content of the first memory area is of a valid a high-bandwidth digital content protection key data; (C) when the contents of the first memory area does not belong to the active high-bandwidth digital content protection key data, a second storage area of ​​the content read; (D) determining that the second memory content area to the effective whether high-bandwidth digital content protection key data; and (E) when the contents of the second storage area belonging to the efficient high-bandwidth digital content protection key data, places the second storage area content as a high-bandwidth digital content protection key data have been checked.

Description

高带宽数字内容保护密钥数据检验与备份方法及装置 High bandwidth digital content protection key data backup method and apparatus for testing and

技术领域 FIELD

[0001]本发明涉及一种密钥数据检验与备份技术,特别是涉及一种用于显示设备的高带宽数字内容保护(High-Bandwidth Digital Content Protect1n,简称HDCP)密钥数据检验与备份方法及核对与备份模块。 [0001] The present invention relates to a key data check and backup technology, particularly to a high-bandwidth digital content protection for a display device (High-Bandwidth Digital Content Protect1n, referred to as HDCP) and key data backup method and test check with the backup module.

背景技术 Background technique

[0002]高带宽数字内容保护(HDCP)技术,是由好莱坞与英特尔(Intel)公司合作开发,用以确保数字化的影音内容在传送时不至于遭到非法拷贝。 [0002] High-bandwidth Digital Content Protection (HDCP) technology, a collaboration between Hollywood and Intel (Intel), developed to ensure digital audio and video content at the time of the transfer would not have been illegal copies. 基本上,当欲播放支持高带宽数字内容保护的视频信号时,一信号来源设备(如,一播放器、一计算机的显示适配器)和一显示设备(如,一液晶显示器)双方都必须内建高带宽数字内容保护密钥芯片才能正常播放;若该讯号来源设备及该显示设备两者中任何一者不配备高带宽数字内容保护密钥芯片,则播放出来的影像的画质有可能降低,甚至不能播放影像。 Basically, to be played when the support high-bandwidth digital content protection video signal, a signal source device (e.g., a player, a computer display adapter) and a display device (e.g., a liquid crystal display) to be built both high-bandwidth digital content protection key chip to normal play; if both the quality of the signal source device and the display device is not equipped with any of a high-bandwidth digital content protection key chip, is played out of the image may be reduced, You can not even play back images.

[0003] —般而言,在该显示设备出厂前,会将一高带宽数字内容保护密钥数据记录于该显示设备的一闪存(flash),举例来说,将该高带宽数字内容保护密钥数据直接刻录于该闪存中。 [0003] - In general, the display device in front of the factory, will be a high bandwidth digital content protection key data is recorded in a flash memory (flash) of the display device, for example, the high-bandwidth digital content protection dense key data directly onto the flash memory.

[0004]然,在该显示设备出厂后,刻录于该闪存的该高带宽数字内容保护密钥数据有可能因各种原因而使其内容有误,譬如,因该闪存本身的损坏造成该高带宽数字内容保护密钥数据的内容有误、因人为或非人为因素而使该高带宽数字内容保护密钥数据的内容被清除或覆盖等;一旦刻录于该闪存的该高带宽数字内容保护密钥数据发生错误,该显示设备就必须回厂以通过厂内的刻录软/硬件重新刻录该高带宽数字内容保护密钥数据。 The high bandwidth digital content protection key data [0004] Then, in the display device after the factory, in the flash memory burning may be due to various reasons it with errors, for example, due to damage of the flash memory itself causes the high SUMMARY bandwidth digital content protection key data is incorrect, because the human or non-human factors of the high-bandwidth digital content protection key data content is cleared or the like covered; is a write to the flash memory of the dense high-bandwidth digital content protection key data error occurs, the display device must return the plant to re-burn high-bandwidth digital content through the factory burn software / hardware protection key data.

发明内容 SUMMARY

[0005]本发明的目的在于提供一种高带宽数字内容保护密钥数据检验与备份方法。 [0005] The object of the present invention is to provide a high-bandwidth digital content protection key and test data backup method.

[0006]本发明高带宽数字内容保护密钥数据检验与备份方法,适用于一显示设备,该方法以包括一第一存储区的一第一存储单元、包括一第二存储区的一第二存储单元,及一处理单元来实现,该显示设备包括一高带宽数字内容保护译码器;该方法包含由该处理单元所执行的下列步骤:(A)读取该第一存储区的内容;(B)判断该第一存储区的内容是否属于有效的一高带宽数字内容保护密钥数据;(C)当该第一存储区的内容不属于有效的该高带宽数字内容保护密钥数据时,则读取该第二存储区的内容;(D)判断该第二存储区的内容是否属于有效的该高带宽数字内容保护密钥数据;及(E)当该第二存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则以该第二存储区的内容作为一已核对的高带宽数字内容保护密钥数据,其中,该已核对的高带宽数字内容保护密钥 [0006] High-bandwidth Digital Content Protection key data of the present invention and test backup method for a display device, the method comprising a first memory cell of a first memory area, a second memory comprises a second region a storage unit and a processing unit implemented, the display apparatus comprises a high-bandwidth digital content protection decoder; the method comprising the steps performed by the processing unit to: (a) reads the contents of the first storage area; (B) determining the content of the first memory area is of a valid a high-bandwidth digital content protection key data; (C) when the content of the first memory area is not part of the effective high-bandwidth digital content protection key data , the contents of the second storage area is read; (D) determining the content of the second memory area is of a valid the high bandwidth digital content protection key data; and (E) when the contents of the second storage area belonging to the effective high-bandwidth digital contents protection key data, places the contents of the second memory area as a high-bandwidth digital content protection has been a key data collation, wherein the reconciled high bandwidth digital content protection key 据与该高带宽数字内容保护译码器的译码运作相关。 According to the protection of the high-bandwidth digital content related to the operation of decoding the decoder.

[0007]本发明的另一目的,即在提供一种高带宽数字内容保护密钥数据检验与备份模块。 [0007] Another object of the present invention, i.e. to provide a high-bandwidth digital content protection key and the backup data check module.

[0008]本发明高带宽数字内容保护密钥数据检验与备份模块,适用于一显示设备,该显示设备包括一高带宽数字内容保护译码器。 [0008] The high bandwidth digital content protection key according to the present invention with test data backup module for a display device, the display device comprises a high-bandwidth digital content protection decoder. 该高带宽数字内容保护密钥数据检验与备份模块,包含:一第一存储单元、一第二存储单元,及一处理单元。 The high bandwidth digital content protection key and the backup data check module, comprising: a first memory unit, a second storage unit, and a processing unit.

[0009]该第一存储单元包括供一高带宽数字内容保护密钥数据储存的一第一存储区。 [0009] The first memory cell comprises a high-bandwidth digital content for a first protected storage area to store the key data. 该第二存储单元包括供该高带宽数字内容保护密钥数据储存的一第二存储区。 The supply of the second storage unit includes a high-bandwidth digital content protection key a second storage area for data storage. 该处理单元用以读取该第一存储区的内容,并判断该第一存储区的内容是否属于有效的该高带宽数字内容保护密钥数据,当该第一存储区的内容不属于有效的该高带宽数字内容保护密钥数据时,则该处理单元还继续读取该第二存储区的内容,并判断该第二存储区的内容是否属于有效的该高带宽数字内容保护密钥数据,当该第二存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则该处理单元以该第二存储区的内容作为一已核对的高带宽数字内容保护密钥数据,其中,该已核对的高带宽数字内容保护密钥数据与该高带宽数字内容保护译码器的译码运作相关。 The processing unit for reading the contents of the first memory area, the contents of the first memory and determining whether a valid area of ​​the high-bandwidth digital content protection key data, when the contents of the first memory area is not valid when the high bandwidth digital content protection key data, the processing unit further continue to read the contents of the second storage area, and determines the content of the second memory area is of a valid the high-bandwidth digital content protection key data, when the content of the second storage area belonging to the efficient high-bandwidth digital content protection key data, the processing unit to the content of the second memory area as a reconciled high bandwidth digital content protection key data, wherein It checked the high-bandwidth digital content protection key data related to the operation of the decoding high-bandwidth digital content protection decoder.

[0010]本发明的有益效果在于:通过根据该第一存储区的内容及该第二存储区的内容进行核对,可降低因为该高带宽数字内容保护密钥数据发生错误,而使该显示设备须回厂重新刻录该高带宽数字内容保护密钥数据的机率。 [0010] Advantageous effects of the present invention is: through checked against the contents of the first storage area and the second storage area can be reduced because the high-bandwidth digital content protection key data error occurs, so that the display device back to the factory to be re-burn the high-bandwidth digital content protection key data probability.

附图说明 BRIEF DESCRIPTION

[0011]图1是一方块图,说明本发明高带宽数字内容保护密钥数据检验与备份模块的一较佳实施例; [0011] FIG. 1 is a block diagram illustrating the present invention, high bandwidth digital content protection key and the backup data check module a preferred embodiment;

[0012]图2是一流程图,说明本发明高带宽数字内容保护密钥数据检验与备份方法。 [0012] FIG 2 is a flowchart illustrating the present invention, high bandwidth digital content protection key and test data backup method.

具体实施方式 detailed description

[0013]下面结合附图及实施例对本发明进行详细说明。 [0013] The following embodiments in conjunction with the accompanying drawings and embodiments of the present invention will be described in detail.

[0014]参阅图1,本发明用于显示设备I的高带宽数字内容保护密钥数据检验与备份模块2的较佳实施例,适用于一显示设备I,该高带宽数字内容保护密钥数据检验与备份模块2包含一处理单元21、一第一存储单元22,及一第二存储单元23;其中,该第一存储单元22包括供一高带宽数字内容保护密钥数据储存的一第一存储区221,该第二存储单元23包括供该高带宽数字内容保护密钥数据储存的一第二存储区231。 [0014] Referring to Figure 1, the present invention is applied to high-bandwidth digital content protection key display device I of the backup data check module 2 is the preferred embodiment for a display device I, the high-bandwidth digital content protection key data 2 test with backup module comprising a processing unit 21, a first storage unit 22, and a second storage unit 23; wherein the first storage unit 22 comprises a first for a high-bandwidth digital content protection key data storage storage area 221, the second storage unit 23 includes a supply of the high-bandwidth digital content protection a second data storage area key storage 231. 在本较佳实施例中,该显示设备I为支持高带宽数字内容保护的一液晶显示设备。 In the present preferred embodiment, the display device I as support high-bandwidth digital content protection of a liquid crystal display device.

[0015]在不增加硬件成本的考虑下,该高带宽数字内容保护密钥数据检验与备份模块2的该处理单元21、该第一存储单元22,及该第二存储单元23是利用现有的液晶显示设备(图未示)固有的处理单元(图未示)及内存(图未示)来实现。 [0015] Without increasing the hardware cost considerations, the high-bandwidth digital content protection key and the backup data check module 21 of the processing unit 2, the first storage unit 22, and the second memory unit 23 is a conventional the liquid crystal display device (not shown) inherent in the processing unit (not shown) and memory (not shown) is achieved. 更进一步来说,该处理单元21除了进行该高带宽数字内容保护密钥数据的核对与备份之外,还进行与该显示设备I的运作相关的流程控制;而且,该高带宽数字内容保护密钥数据检验与备份模块2的该第一存储单元22、该第二存储单元23除了供该高带宽数字内容保护密钥数据储存之外,还供与该显示设备I之运作相关的其他数据储存,举例来说,该第二存储单元23还可供一默认调校电压值储存。 Still further, the processing unit 21 in addition to the high-bandwidth digital content protection key check and backup data, but also related to the operation of the display device I flow control; Further, the high-bandwidth digital content protection dense test key data backup module with the first memory unit 22 2, the second storage unit 23 except for the high-bandwidth digital content protection key data storage, but also for the operation of the display device I with the other data storage-related, for example, the second storage unit 23 for a further voltage values ​​stored default calibration.

[0016]其中,该显示设备I包括可接收视频信号的一高带宽数字内容保护译码器11、电连接于该高带宽数字内容保护译码器11的该高带宽数字内容保护密钥数据检验与备份模块 [0016] wherein the display apparatus can receive a video signal I comprises a high-bandwidth digital content protection decoder 11, electrically connected to the high-bandwidth digital content protection of the decoder 11 of the high-bandwidth digital content protection key data checking and backup module

2、电连接于该高带宽数字内容保护译码器11的一像素(pixel)驱动模块12、电连接于该第二存储单元23的一共同极调校模块13,及电连接于该像素驱动模块12与该共同极调校模块13的一液晶面板14。 2, electrically connected to the high-bandwidth digital content protection decoder a pixel (pixel) 11 of the drive module 12, 13 is electrically connected to, a common electrode and an electrical module to adjust the second storage unit 23 is connected to the pixel driver a liquid crystal panel module 12 and the common electrode 13, tuning module 14. 其中,该像素驱动模块12用以接收经该高带宽数字内容保护译码器11译码后的视频信号,并用以产生一源极电压及一闸极电压;该共同极调校模块13用以根据储存于该第二存储单元23的该默认调校电压值产生一共同极电压(Vcom);该液晶面板14用以接收该源极电压、该闸极电压,及该共同极电压以进行显示。 Wherein the pixel driving module 12 is configured to receive the high-bandwidth digital content video signal decoder 11 decodes protection, and for generating a source voltage and a gate voltage; the common electrode 13 for tuning module the tuning voltage stored in the default value of the second storage unit 23 generates a common electrode voltage (Vcom is); the liquid crystal panel 14 for receiving the source voltage, the gate voltage, and the common electrode voltage to be displayed . 由于该高带宽数字内容保护译码器11、该像素驱动模块12、该共同极调校模块13,及该液晶面板14的功能及详细实作方式为熟习此项技术者所熟知,所以不在此赘述。 Since the high-bandwidth digital content protection decoder 11, the pixel driving module 12, 13, the function of the liquid crystal panel and the common electrode 14 and the tuning module is a detailed implementation manner well known to those skilled in the art, this is not so repeat.

[0017]在本较佳实施例中,该第一存储单元22为一闪存(flash),且该闪存最后4K字节(byte)的存储空间被规划作为该第一存储区221;该第二存储单元23为一非挥发性随机存取内存(NVRAM),且该非挥发性随机存取内存的最后一页(page)的存储空间被规划作为该第二存储区231。 [0017] In the present preferred embodiment, the first storage unit 22 is a flash memory (Flash), flash memory and the final 4K bytes (byte) of storage space is planned as the first memory area 221; the second the storage unit 23 is a non-volatile random access memory (NVRAM), and the last page of the non-volatile random access memory (page) of storage space is planned as the second storage area 231.

[0018]值得一提的是,在该显示设备I出厂前,该第一存储单元22的该第一存储区221已预先被储存有一高带宽数字内容保护密钥数据;该第二存储单元23已完成初始化,而且,与第一存储区221及该第二存储区231相关的旗标(flag)也已经被初始设定,在本较佳实施例中,前述相关的旗标包括一已备份密钥数据旗标,及一密钥数据异常旗标,其中,该已备份密钥数据旗标被初始设定为一第一默认值,该密钥数据异常旗标也被初始设定为该第一默认值;其中,该第一默认值为「False」。 [0018] It is worth mentioning that, in front of the display device I shipped, the first storage region 22 of the first storage unit 221 has previously stored a high bandwidth digital content protection key data; the second storage unit 23 initialization has been completed, and, with the first storage area 221 and the second storage area 231 associated with the flag (in flag) has been initially set, in the preferred embodiment according to the present embodiment, the related flag includes a backed up key data flag, and an abnormality flag key data, wherein the key data backed up flag is initially set to a first predetermined value, the key data error flag is also set as the initial the first default value; wherein the first default value is "False."

[0019]以下配合本发明高带宽数字内容保护密钥数据检验与备份方法,对该高带宽数字内容保护密钥数据检验与备份模块2的运作进一步地说明。 [0019] The following complexes of the present invention, high bandwidth digital content protection key and the backup data checking methods, the high-bandwidth digital content protection key and the data check operation of the backup module 2 further described.

[°02°] 参阅图1与图2,当该显示设备I被电源开启(power on)后,该处理单元21会接着执行以下步骤。 [° 02 °] Referring to FIG. 1 and FIG. 2, when the display device I is turned on power (power on), the processing unit 21 will then perform the following steps.

[0021] 在步骤301中,该处理单元21读取该第一存储区221的内容。 [0021] In step 301, the processing unit 21 reads the contents of the first memory area 221.

[0022]在步骤302中,该处理单元21判断该第一存储区221的内容是否属于有效的(valid)该高带宽数字内容保护密钥数据;当该第一存储区221的内容属于有效的该高带宽数字内容保护密钥数据时,则继续进行步骤303的处理;否则,继续进行步骤306的处理。 [0022] In step 302, the processing unit 21 determines the contents of the first memory area 221 is of a valid (Valid) of the high-bandwidth digital content protection key data; when the content of the first memory area 221 belonging to a valid when the high bandwidth digital content protection key data, the process proceeds to step 303; otherwise, processing continues to step 306. 其中,若该第一存储区221的内容属于一无效(invalid)码(如,全为''FF"或”00"),或者该处理单元21根据该第一存储区221的内容所计算出的一核对总合(checksum)不等于一预设的核对总合,则表示该第一存储区221的内容不属于有效的该高带宽数字内容保护密钥数据;否则,表示该第一存储区221的内容属于有效的该高带宽数字内容保护密钥数据。 Wherein, if the contents of the first memory area 221 belonging to a valid (invalid) code (e.g., are all '' FF "or" 00 "), or the processing unit 21 is calculated based on the contents of the first memory area 221 a check sum (Checksum) is not equal to a predetermined check sum, it indicates that the contents of the first memory area 221 is not part of the effective high-bandwidth digital content protection key data; otherwise, it indicates that the first storage area effective content 221 belonging to the high-bandwidth digital content protection key data.

[0023] 更进一步来说,在本较佳实施例中,该处理单元21进行以下子步骤,以判断该第一存储区221的内容是否属于有效的该高带宽数字内容保护密钥数据: [0023] Furthermore, in the present preferred embodiment, the processing unit 21 performs the following sub-steps to determine the contents of the first memory area 221 is valid whether the high-bandwidth digital content protection key data:

[0024] (i)判断该第一存储区221的内容是否属于该无效码; [0024] (i) determining the content of the first storage area 221 belongs to the invalid code;

[0025] (ii)当该第一存储区221的内容属于该无效码时,则该第一存储区221的内容不属于有效的该高带宽数字内容保护密钥数据; [0025] (ii) when the contents of the first memory region 221 belonging to the code is invalid, then the contents of the first memory area 221 is not part of the effective high-bandwidth digital content protection key data;

[0026] (iii)当该第一存储区221的内容不属于该无效码时,则根据该第一存储区221的内容计算一核对总合; [0026] (iii) when the contents of the first memory area 221 is not part of the code is not valid, a check sum is calculated in accordance with the contents of the first memory area 221;

[0027] (i V)当子步骤(iii)所计算出的该核对总合不等于该预设的核对总合时,则该第一存储区221的内容不属于有效的该高带宽数字内容保护密钥数据;及 [0027] (i V) when the sub-step (iii) the calculated check sum is not equal to the predetermined total collation engaged, the contents of the first memory area 221 is not part of the effective high-bandwidth digital content protection key data; and

[0028] (V)当子步骤(ii i)所计算出的该核对总合等于该预设的核对总合时,则该第一存储区221的内容属于有效的该高带宽数字内容保护密钥数据。 [0028] (V) when the sub-step (ii i) the calculated check sum is equal to the predetermined total collation engaged, the contents of the first memory region 221 belonging to the valid secret high bandwidth digital content protection key data.

[0029]在步骤303中,该处理单元21以该第一存储区221的内容作为一已核对的高带宽数字内容保护密钥数据。 [0029] In step 303, the processing unit 21 to the contents of the first memory area 221 has a check as a high-bandwidth digital content protection key data.

[0030]在步骤304中,该处理单元21判断该已备份密钥数据旗标是否等于一第二默认值;当该已备份密钥数据旗标等于该第二默认值时,继续进行步骤310的处理;否则,继续进行步骤305的处理;其中,该第二默认值为「TrueJ0 [0030] In step 304, the processing unit 21 determines whether the key data is backed up flag is equal to a second predetermined value; when the flag data has been backed up key is equal to the second predetermined value, proceed to Step 310 processing; otherwise, the process continues to step 305; wherein the second default value is "TrueJ0

[0031]在步骤305中,该处理单元21将该第一存储区221的内容备份储存至该第二存储区231,并将该已备份密钥数据旗标设定为该第二默认值。 [0031] In step 305, the processing unit 21 the contents of the first memory area 221 as the backup to the second storage area 231, and the key data backed up flag is set as the second predetermined value.

[0032] 在步骤306中,该处理单元21读取该第二存储区231的内容。 [0032] In step 306, the processing unit 21 reads the contents of the second memory area 231.

[0033]在步骤307中,该处理单元21判断该第二存储区231的内容是否属于有效的该高带宽数字内容保护密钥数据;当该第二存储区231的内容属于有效的该高带宽数字内容保护密钥数据时,则继续进行步骤308的处理;否则,继续进行步骤309的处理。 [0033] In step 307, the processing unit 21 determines the content of the second memory area 231 is of a valid the high-bandwidth digital content protection key data; when the content of the second memory 231 belongs to a valid area of ​​the high bandwidth digital content protection key data, the process proceeds to step 308; otherwise, processing continues to step 309. 其中,若该第二存储区231的内容属于该无效码,或者该处理单元21根据该第二存储区231的内容所计算出的一核对总合不等于该预设的核对总合,则表示该第二存储区231的内容不属于有效的该高带宽数字内容保护密钥数据;否则,表示该第二存储区231的内容属于有效的该高带宽数字内容保护密钥数据;其进一步的判断方式类似于上述步骤302。 Wherein, if the content of the second storage area belonging to the invalid code 231, or the processing unit 21 is not equal to the sum of the predetermined check sum based on the contents of the second storage area 231 calculated a check, then the contents of the second storage area 231 is not part of the effective high-bandwidth digital content protection key data; otherwise, represents the contents of the second memory 231 belongs to a valid area of ​​the high-bandwidth digital content protection key data; further determination manner similar to step 302 above.

[0034]在步骤308中,该处理单元21以该第二存储区231的内容作为该已核对的高带宽数字内容保护密钥数据。 [0034] In step 308, the processing unit 21 to the contents of the second memory area 231 as a high-bandwidth digital content protection key of the reconciled data.

[0035]在步骤309中,该处理单元21将该密钥数据异常旗标设定为该第二默认值。 [0035] In step 309, the processing unit 21 stores the key data is abnormal flag is set as the second predetermined value.

[0036]在步骤310中,该处理单元21判断该密钥数据异常旗标是否等于该第二默认值;当该密钥数据异常旗标等于该第二默认值时,则继续进行步骤311的处理;否则,继续进行步骤312的处理。 [0036] In step 310, the processing unit 21 determines whether the key data is abnormal flag is equal to the second predetermined value; when the key data is abnormal flag is equal to the second predetermined value, then proceeds to step 311 processing; otherwise, the process continues with step 312.

[0037]在步骤311中,该处理单元21产生用以指示该高带宽数字内容保护密钥数据为异常的一讯息(message)以供显示。 [0037] In step 311, the processing unit 21 generates to indicate that the high-bandwidth digital content protection key data is abnormal in a message (message) for display.

[0038]在步骤312中,该处理单元21将该已核对的高带宽数字内容保护密钥数据提供给该高带宽数字内容保护译码器11。 [0038] In step 312, the processing unit 21 has checked the high-bandwidth digital content protection key data is supplied to the high-bandwidth digital content protection decoder 11.

[0039]在完成步骤312后,该高带宽数字内容保护译码器11就可以根据该已核对的高带宽数字内容保护密钥数据进行后续的译码处理。 [0039] After completion of step 312, the high-bandwidth digital content protection decoder 11 can decode the subsequent processing according to the reconciled high bandwidth digital content protection key data.

[0040]综上所述,本发明通过将该高带宽数字内容保护密钥数据备份储存至该第二存储区231,并根据该第一存储区221的内容及该第二存储区231的内容进行核对,可降低因为该高带宽数字内容保护密钥数据发生错误,而使该显示设备I须回厂重新刻录该高带宽数字内容保护密钥数据的机率,所以确实能达成本发明的目的。 [0040] In summary, the present invention is by the high-bandwidth digital content protection key storing backup data to the second storage area 231, and based on the contents of the first memory area 221 and the contents of the second memory area 231 collates can be reduced because the high-bandwidth digital content protection key data error occurs, so that the display device back to the factory I shall rewrite the high-bandwidth digital content protection key probability data, so can really achieve the object of the present invention.

[0041]惟以上所述者,仅为本发明的较佳实施例而已,当不能以此限定本发明实施的范围,即大凡依本发明申请专利范围及发明说明内容所作的简单的等效变化与修饰,皆仍属本发明专利涵盖的范围内。 [0041] However those described above, the present invention is merely preferred embodiments, when it is not limiting the scope of this embodiment of the present invention, i.e., almost all under this patent disclosure and the scope of the invention described simple equivalent content changes made by and modifications are still encompassed within the scope of the present invention patent.

Claims (7)

  1. 1.一种高带宽数字内容保护密钥数据检验与备份方法,适用于一显示设备,该方法以包括一第一存储区的一第一存储单元、包括一第二存储区的一第二存储单元,及一处理单元来实现,该显示设备包括一高带宽数字内容保护译码器;其特征在于:该方法包含由该处理单元所执行的下列步骤: (G)将一已备份密钥数据旗标初始设定为一第一默认值; (H)将一密钥数据异常旗标初始设定为该第一默认值; (A)读取该第一存储区的内容; (B)判断该第一存储区的内容是否属于有效的一高带宽数字内容保护密钥数据; (I)当该第一存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则判断该已备份密钥数据旗标是否等于一第二默认值; (J)当该已备份密钥数据旗标不等于该第二默认值时,则将该第一存储区的内容备份储存至该第二存储区; (K)将该已备份密钥数 1. A high-bandwidth digital content protection key and test data backup method for a display device, the method comprising a first memory cell of a first memory area, a second memory comprises a second storage area unit, and a processing unit implemented, the display apparatus comprises a high-bandwidth digital content protection decoder; characterized in that: the method comprises the steps executed by the processing unit to: (G) will be a key data backed up flag initially set to a first predetermined value; (H) to a key data set as the initial abnormality flag is a first default value; (a) reads the contents of the first memory area; (B) Analyzing the contents of the first memory area is of a valid a high-bandwidth digital content protection key data; (the I) when the content of the first storage area belonging to the efficient high-bandwidth digital content protection key data, it is judged that has whether the key data backup flag is equal to a second predetermined value; when (J) when the key data is backed up flag is not equal to the second predetermined value, then the contents of the first storage area to the second backup storage storage area; (K) is the number of backup key 旗标设定为该第二默认值; (C)当该第一存储区的内容不属于有效的该高带宽数字内容保护密钥数据时,则读取该第二存储区的内容; (D)判断该第二存储区的内容是否属于有效的该高带宽数字内容保护密钥数据;及(E)当该第二存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则以该第二存储区的内容作为一已核对的高带宽数字内容保护密钥数据,其中,该已核对的高带宽数字内容保护密钥数据与该高带宽数字内容保护译码器的译码运作相关。 A second flag is set as the default value; (C) when the contents of the first memory area does not belong to the active high-bandwidth digital content protection key data, then the content of the second memory area is read; (D ) Analyzing the content of the second memory area is of a valid the high bandwidth digital content protection key data; and (E) when the contents of the second storage area belonging to the efficient high-bandwidth digital content protection key data, to the contents of the second memory area as a reconciled high bandwidth digital content protection key data, wherein the reconciled high-bandwidth digital content protection key data to the high-bandwidth digital content protection decoder decoding operation related.
  2. 2.根据权利要求1所述的高带宽数字内容保护密钥数据检验与备份方法,其特征在于: 在步骤(B)中,当该第一存储区的内容属于一无效码时,则表示该第一存储区的内容不属于有效的该高带宽数字内容保护密钥数据;及在步骤(D)中,当该第二存储区的内容属于该无效码时,则表示该第二存储区的内容不属于有效的该高带宽数字内容保护密钥数据。 The high-bandwidth digital content protection according to claim 1 and a backup key data inspection method, comprising: in step (B), when the content of the first storage area belonging to an invalid number, then the contents of the first storage area does not belong to the active high-bandwidth digital content protection key data; and in step (D), when the content of the second storage area belonging to the code is invalid, it indicates that the second storage area the contents do not belong to a valid high bandwidth digital content protection key data.
  3. 3.根据权利要求1所述的高带宽数字内容保护密钥数据检验与备份方法,其特征在于: 步骤(B)包括下列子步骤: (b-1)根据该第一存储区的内容计算一核对总合; (b-2)判断子步骤(b-Ι)中计算的该核对总合是否等于一预设的核对总合;及(b-3)当子步骤(b-Ι)中计算的该核对总合不等于该预设的核对总合时,则表示该第一存储区的内容不属于有效的该高带宽数字内容保护密钥数据; 步骤(D)包括下列子步骤: (d-1)根据该第二存储区的内容计算一核对总合; (d-2)判断子步骤(d-Ι)中计算的该核对总合是否等于该预设的核对总合;及(d-3)当子步骤(d-Ι)中计算的该核对总合不等于该预设的核对总合时,则表示该第二存储区的内容不属于有效的该高带宽数字内容保护密钥数据。 3. The high-bandwidth digital content according to the protection key according to claim 1 and test data backup method, comprising: step (B) comprises the substeps of: (b-1) is calculated according to a content of the first storage area check sum; (b-2) determining sub-step (b-Ι) the calculated check sum is equal to a predetermined check sum; and (b-3) when the sub-step (b-Ι) calculated this check sum is not equal to the predetermined total collation engaged, it indicates that the contents of the first memory area does not belong to the active high-bandwidth digital content protection key data; step (D) comprises the substeps of: (d -1), a check sum is calculated in accordance with the contents of the second memory area; calculating the verification sub-step (d-Ι) of (d-2) determining whether the sum is equal to the predetermined check sum; and (d -3) when the checking sub-step (d-Ι) calculated sum is not equal to the predetermined total collation engaged, it indicates the content of the second memory area does not belong to the active high-bandwidth digital content protection key data.
  4. 4.根据权利要求1所述的高带宽数字内容保护密钥数据检验与备份方法,其特征在于:其还包含步骤(B)与步骤(C)之间的下列步骤: (F)当该第一存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则以该第一存储区的内容作为该已核对的高带宽数字内容保护密钥数据。 4. The high-bandwidth digital content protection key according to claim 1 and test data backup method, characterized in that: further comprising the step between steps (B) and Step (C): (F) when the first a content storage area belonging to the efficient high-bandwidth digital contents protection key data, places the contents of the first storage area as the collation has high bandwidth digital content protection key data.
  5. 5.根据权利要求1所述的高带宽数字内容保护密钥数据检验与备份方法,其特征在于:其还包含步骤(D)之后的下列步骤: (L)当该第二存储区的内容不属于有效的该高带宽数字内容保护密钥数据时,则将该密钥数据异常旗标设定为一第二默认值。 The high-bandwidth digital content according to the protection key according to claim 1 and test data backup method, characterized in that: further comprising the step after step (D): (L) when the contents of the second storage area is not belonging to the active high-bandwidth digital content protection key data, the key data error flag is set to a second predetermined value.
  6. 6.根据权利要求5所述的高带宽数字内容保护密钥数据检验与备份方法,其特征在于:其还包含步骤(D)之后的下列步骤: (M)判断该密钥数据异常旗标是否等于该第二默认值; (N)当该密钥数据异常旗标等于该第二默认值时,则产生用以指示该高带宽数字内容保护密钥数据为异常的一讯息;及(O)当该密钥数据异常旗标不等于该第二默认值时,则将该已核对的高带宽数字内容保护密钥数据提供给该高带宽数字内容保护译码器。 The high bandwidth digital content as claimed in claim 5, wherein the data protection key and the backup test, characterized in that: further comprising the step after step (D): (M) which determines whether the key data is abnormal flag equal to the second predetermined value; (N) when the key data is abnormal flag is equal to the second predetermined value is generated to indicate that the high-bandwidth digital content protection key data is abnormal is a message; and (O) when the key data is abnormal flag it is not equal to the second predetermined value, then the high-bandwidth digital content protection key reconciled data to the high-bandwidth digital content protection decoder.
  7. 7.—种高带宽数字内容保护密钥数据检验与备份装置,适用于一显示设备,该显示设备包括一高带宽数字内容保护译码器,该高带宽数字内容保护密钥数据检验与备份模块包含: 一第一存储单元,包括供一高带宽数字内容保护密钥数据储存的一第一存储区; 一第二存储单元,包括供该高带宽数字内容保护密钥数据储存的一第二存储区;及一处理单元,用以读取该第一存储区的内容,并判断该第一存储区的内容是否属于有效的该高带宽数字内容保护密钥数据,当该第一存储区的内容不属于有效的该高带宽数字内容保护密钥数据时,则该处理单元还继续读取该第二存储区的内容,并判断该第二存储区的内容是否属于有效的该高带宽数字内容保护密钥数据,当该第二存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则该处理单元以该第二存储 7.- kinds of high-bandwidth digital content protection key and the backup data checking apparatus for use in a display device, the display device comprises a high-bandwidth digital content protection decoder, the high-bandwidth digital content protection key and the backup data check module comprising: a first storage unit, comprising for a high-bandwidth digital content protection key a first storage area of ​​the data storage; a second storage unit, comprising for the high-bandwidth digital content protection key data stored in a second storage regions; and a processing unit for reading the contents of the first memory area, the contents of the first memory and determining whether a valid area of ​​the high-bandwidth digital content protection key data, when the content of the first storage area when not belonging to the active high-bandwidth digital content protection key data, the processing unit further continue to read the contents of the second storage area, and determines the content of the second memory area is of a valid the high Bandwidth digital content protection key data, when the contents of the second storage area belonging to the efficient high-bandwidth digital content protection key data, the second memory to the processing unit 的内容作为一已核对的高带宽数字内容保护密钥数据,其中,该已核对的高带宽数字内容保护密钥数据与该高带宽数字内容保护译码器的译码运作相关,该处理单元还将一已备份密钥数据旗标初始设定为一第一默认值,当该第一存储区的内容属于有效的该高带宽数字内容保护密钥数据时,则该处理单元还以该第一存储区的内容作为该已核对的高带宽数字内容保护密钥数据,并判断该已备份密钥数据旗标是否等于一第二默认值,当该已备份密钥数据旗标不等于该第二默认值时,则该处理单元还将该第一存储区的内容备份储存至该第二存储区,并将该已备份密钥数据旗标设定为该第二默认值。 Content as a high-bandwidth digital content protection key data have been checked, wherein the reconciled high bandwidth digital content protection key data related to the operation of the decoding high-bandwidth digital content protection decoders, the processing unit further the key data has been backed up a flag is initially set to a first predetermined value, when the contents of the first storage area belonging to the efficient high-bandwidth digital content protection key data, the processing unit is further to the first the contents of memory as a high-bandwidth digital content protection key of the reconciled data, and determines whether the backed up data key flag is equal to a second predetermined value, when the key data is backed up flag is not equal to the second when the default value, the processing unit is also the first content backup storage area to the second storage area is stored, backed up and the key data set as the second flag is the default value.
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CN1607793A (en) * 2003-09-26 2005-04-20 创世纪微芯片公司 Packet based high definition high-bandwidth digital content protection
CN101557488A (en) * 2008-04-07 2009-10-14 联发科技股份有限公司 Medium content providing method, high definition multimedia interface system and original device
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