TWI502484B - Display system and display method - Google Patents
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本發明係屬於顯示系統,特別是有關於利用USB顯示裝置播放具內容保護之視訊內容的顯示系統及顯示方法。The present invention relates to a display system, and more particularly to a display system and a display method for playing video content with content protection using a USB display device.
在個人電腦及筆記型電腦所使用的眾多介面之中,USB(Universal Serial Bus)介面是最成功也是應用範圍最廣的一種。在目前USB介面之規範中,並沒有特別定義音訊及視訊的應用,特別是有內容保護(例如數位版權管理DRM)的音訊/視訊資料。舉例來說,Blu-ray光碟片之內容係採用先進存取內容系統(Advanced Access Content System,AACS)之加解密標準來進行加密,藉以保護音訊/視訊內容。在傳統的顯示系統中,圖形處理器之驅動程式僅能將所得到的原始視訊資料傳送至顯示卡。處理器會再更進一步判斷顯示卡是透過類比顯示介面(例如VGA、DSUB介面)或是具有資料保護的數位顯示介面(例如HDMI、DisplayPort或DVI)進行輸出。而具有內容保護的高畫質解析度(例如Full High Definition)之視訊檔案僅能透過數位顯示介面輸出才能具有原本的高畫質解析度,若透過類比顯示介面輸出,則必需將原本的高畫質解析度降階為標準解析度(Standard Definition)。Among the many interfaces used in personal computers and notebooks, the USB (Universal Serial Bus) interface is the most successful and the most widely used. In the current specification of the USB interface, there is no specific definition of audio and video applications, especially audio/video data with content protection (such as digital rights management DRM). For example, the content of a Blu-ray disc is encrypted using an Advanced Access Content System (AACS) encryption and decryption standard to protect audio/video content. In a conventional display system, the driver of the graphics processor can only transfer the original video data obtained to the display card. The processor will further determine whether the display card is output through an analog display interface (such as VGA, DSUB interface) or a digital display interface with data protection (such as HDMI, DisplayPort or DVI). The video file with high image resolution (such as Full High Definition) with content protection can only output through the digital display interface to have the original high image resolution. If the output is output through the analog display interface, the original high picture must be The quality resolution is reduced to the standard definition (Standard Definition).
因此,在目前電腦系統的軟體/硬體架構限制下,若要播放具有內容保護之視訊資料,使用者往往無法透過外接的USB顯示卡來撥放有內容保護(例如DHCP)的視訊或音 訊。因此,亟需一種顯示系統可利用USB顯示裝置播放具有內容保護的視訊內容。Therefore, in the current software/hardware architecture of computer systems, if video content with content protection is to be played, users often cannot play video or audio with content protection (such as DHCP) through an external USB display card. News. Therefore, there is a need for a display system that can play video content with content protection using a USB display device.
本發明係提供一種顯示系統,包括:一處理器,用以對以一第一加解密標準之一第一加密視訊流解密以得到一第一視訊流,並以一第二加解密標準對第一視訊流加密以得到一第二加密視訊流;一圖形處理器;一USB顯示裝置;一儲存單元,包括一第一驅動程式及一第二驅動程式;以及一晶片組;其中處理器係執行第一驅動程式對第二加密視訊流解密以得到一第二視訊流;其中圖形處理器及第一驅動程式係對第二視訊流進行解碼以得到一第一視訊資料;其中處理器更執行該第二驅動程式,對解碼所得的第一視訊資料進行加密以得到一加密視訊資料,並將加密視訊資料傳送至USB顯示裝置;其中USB顯示裝置更對加密視訊資料進行解密以得到一第二視訊資料,並於一顯示器播放所得到的第二視訊資料。The present invention provides a display system, including: a processor for decrypting a first encrypted video stream by a first encryption and decryption standard to obtain a first video stream, and using a second encryption and decryption standard a video stream is encrypted to obtain a second encrypted video stream; a graphics processor; a USB display device; a storage unit including a first driver and a second driver; and a chipset; wherein the processor executes The first driver decrypts the second encrypted video stream to obtain a second video stream; wherein the graphics processor and the first driver decode the second video stream to obtain a first video data; wherein the processor further executes the The second driver encrypts the decoded first video data to obtain an encrypted video data, and transmits the encrypted video data to the USB display device; wherein the USB display device decrypts the encrypted video data to obtain a second video message. Data and play the obtained second video material on a display.
本發明更提供一種顯示系統,包括:一處理器,包括一第一核心及一第二核心,其中該第一核心係用以對以一第一加解密標準之一第一加密視訊流解密以得到一第一視訊流,並以一第二加解密標準對該第一視訊流加密以得到一第二加密視訊流;一USB顯示裝置;一儲存單元,包括該第二核心之一第一驅動程式及該USB顯示裝置之一第二驅動程式;以及一晶片組,耦接於該處理器、該USB顯示裝置及該儲存單元;其中該第一核心係執行該第一驅動程 式對該第二加密視訊流解密以得到一第二視訊流;其中該第二核心及該第一驅動程式係對該第二視訊流進行解碼以得到一第一視訊資料;其中該第一核心更執行該第二驅動程式,對解碼所得的該第一視訊資料進行加密以得到一加密視訊資料,並將該加密視訊資料傳送至該USB顯示裝置;其中該USB顯示裝置更對該加密視訊資料進行解密以得到一第二視訊資料,並於一顯示器播放所得到的該第二視訊資料。The present invention further provides a display system, including: a processor, including a first core and a second core, wherein the first core is configured to decrypt a first encrypted video stream by using a first encryption and decryption standard. Obtaining a first video stream, and encrypting the first video stream by a second encryption and decryption standard to obtain a second encrypted video stream; a USB display device; and a storage unit including a first driver of the second core a second driver of the program and the USB display device; and a chipset coupled to the processor, the USB display device, and the storage unit; wherein the first core system performs the first driving process Decrypting the second encrypted video stream to obtain a second video stream; wherein the second core and the first driver program decode the second video stream to obtain a first video material; wherein the first core And executing the second driver, encrypting the decoded first video data to obtain an encrypted video data, and transmitting the encrypted video data to the USB display device; wherein the USB display device further encrypts the video data Decrypting to obtain a second video material, and playing the obtained second video material on a display.
本發明更提供一種顯示系統,包括:一處理器,包括一第一核心及一第二核心,其中該第一核心係用以對以一第一加解密標準之一第一加密視訊流解密以得到一第一視訊流,並以一第二加解密標準對該第一視訊流加密以得到一第二加密視訊流;一USB顯示裝置;一儲存單元,包括該第二核心之一第一驅動程式及該USB顯示裝置之一第二驅動程式;以及一平台集線控制器,耦接於該處理器、該USB顯示裝置及該儲存單元;其中該第一核心係執行該第一驅動程式對該第二加密視訊流解密以得到一第二視訊流,其中該第二核心及該第一驅動程式係對該第二視訊流進行解碼以得到一視訊資料,其中該第一核心更執行該第二驅動程式,對解碼所得的該第一視訊資料進行加密以得到一加密視訊資料,並將該加密視訊資料傳送至該USB顯示裝置;其中該USB顯示裝置更對該加密視訊資料進行解密以得到一第二視訊資料,並於一顯示器播放所得到的該第二視訊資料。The present invention further provides a display system, including: a processor, including a first core and a second core, wherein the first core is configured to decrypt a first encrypted video stream by using a first encryption and decryption standard. Obtaining a first video stream, and encrypting the first video stream by a second encryption and decryption standard to obtain a second encrypted video stream; a USB display device; and a storage unit including a first driver of the second core a second driver of the program and the USB display device; and a platform hub controller coupled to the processor, the USB display device, and the storage unit; wherein the first core executes the first driver Decrypting the second encrypted video stream to obtain a second video stream, wherein the second core and the first driver program decode the second video stream to obtain a video data, wherein the first core further performs the second a driver, the decoded first video data is encrypted to obtain an encrypted video data, and the encrypted video data is transmitted to the USB display device; wherein the USB display device is further Decrypts encrypted video data to obtain a second video data, and the second video data to a display of the obtained playback.
本發明更提供一種顯示方法,用於一顯示系統,該顯 示系統包括:一處理器、一圖形處理器、一USB顯示裝置、一儲存單元及一晶片組,其中該儲存單元包括該圖形處理器之一第一驅動程式及該USB顯示裝置之一第二驅動程式,且該晶片組係耦接於該處理器、該圖形處理器、該USB顯示裝置及該儲存單元,該方法包括:利用該處理器對以一第一加解密標準之一第一加密視訊流解密以得到一第一視訊流,並以一第二加解密標準對該第一視訊流加密以得到一第二加密視訊流;利用該處理器執行該第一驅動程式對該第二加密視訊流解密以得到一第二視訊流;利用該圖形處理器及該第一驅動程式對該第二視訊流進行解碼以得到一第一視訊資料;利用該處理器執行該第二驅動程式,對解碼所得的該第一視訊資料進行加密以得到一加密視訊資料,並將該加密視訊資料傳送至該USB顯示裝置;利用該USB顯示裝置對該加密視訊資料進行解密以得到一第二視訊資料;以及利用該USB顯示裝置於一顯示器播放所得到的該第二視訊資料。The invention further provides a display method for a display system, the display The display system includes: a processor, a graphics processor, a USB display device, a storage unit, and a chipset, wherein the storage unit includes a first driver of the graphics processor and a second of the USB display device a driver, and the chipset is coupled to the processor, the graphics processor, the USB display device, and the storage unit, the method comprising: using the processor to first encrypt the first encryption and decryption standard Decrypting the video stream to obtain a first video stream, and encrypting the first video stream by a second encryption and decryption standard to obtain a second encrypted video stream; and executing, by the processor, the first driver to perform the second encryption The video stream is decrypted to obtain a second video stream; the second video stream is decoded by the graphics processor and the first driver to obtain a first video data; and the second driver is executed by the processor, Decoding the first video data to obtain an encrypted video data, and transmitting the encrypted video data to the USB display device; using the USB display device to encrypt the encrypted video Decrypting data to obtain a second video data; and the use of the USB in a second video display means displays the obtained display information.
本發明更提供一種顯示方法,用於一顯示系統,該顯示系統包括:一處理器、一USB顯示裝置、一儲存單元及一晶片組,其中該處理器包括一第一核心及一第二核心,該儲存單元包括該第二核心之一第一驅動程式及該USB顯示裝置之一第二驅動程式,且該晶片組係耦接於該處理器、該USB顯示裝置及該儲存單元,該方法包括:利用該第一核心對以一第一加解密標準之一第一加密視訊流解密以得到一第一視訊流,並以一第二加解密標準對該第一視訊流加密以得到一第二加密視訊流;利用該第一核心執行 該第一驅動程式對該第二加密視訊流解密以得到一第二視訊流;利用該第二核心及該第一驅動程式對該第二視訊流進行解碼以得到一第一視訊資料;利用該第一核心執行該第二驅動程式,對解碼所得的該第一視訊資料進行加密以得到一加密視訊資料,並將該加密視訊資料傳送至該USB顯示裝置;利用該USB顯示裝置對該加密視訊資料進行解密以得到一第二視訊資料;以及利用該USB顯示裝置於一顯示器播放所得到的該第二視訊資料。The present invention further provides a display method for a display system, the display system comprising: a processor, a USB display device, a storage unit, and a chipset, wherein the processor includes a first core and a second core The storage unit includes a first driver of the second core and a second driver of the USB display device, and the chipset is coupled to the processor, the USB display device, and the storage unit, the method The method includes: decrypting, by using the first core pair, a first encrypted video stream by using a first encryption and decryption standard to obtain a first video stream, and encrypting the first video stream by using a second encryption and decryption standard to obtain a first Two encrypted video streams; using the first core to execute Decoding the second encrypted video stream to obtain a second video stream; using the second core and the first driver to decode the second video stream to obtain a first video data; The first core executes the second driver, encrypts the decoded first video data to obtain an encrypted video data, and transmits the encrypted video data to the USB display device; using the USB display device to encrypt the video Decrypting the data to obtain a second video material; and playing the second video data obtained by the USB display device on a display.
本發明更提供一種顯示方法,用於一顯示系統,該顯示系統包括:一處理器、一USB顯示裝置、一儲存單元、一記憶體單元及一平台控制集線器,其中該處理器包括一第一核心、一第二核心及一整合記憶體控制器,該儲存單元包括該第二核心之一第一驅動程式及該USB顯示裝置之一第二驅動程式,且該晶片組係耦接於該處理器、該USB顯示裝置及該儲存單元,該方法包括:利用該第一核心對以一第一加解密標準之一第一加密視訊流解密以得到一第一視訊流,並以一第二加解密標準對該第一視訊流加密以得到一第二加密視訊流;利用該第一核心執行該第一驅動程式對該第二加密視訊流解密以得到一第二視訊流;利用該第二核心及該第一驅動程式對該第二視訊流進行解碼以得到一第一視訊資料;利用該第一核心執行該第二驅動程式,對解碼所得的該第一視訊資料進行加密以得到一加密視訊資料,並將該加密視訊資料傳送至該USB顯示裝置;利用該USB顯示裝置對該加密視訊資料進行解密以得到一第二視訊資料;以及利用該USB顯示裝置於一顯示器播放 所得到的該第二視訊資料。The present invention further provides a display method for a display system, the display system comprising: a processor, a USB display device, a storage unit, a memory unit, and a platform control hub, wherein the processor includes a first a core, a second core, and an integrated memory controller, the storage unit including a first driver of the second core and a second driver of the USB display device, and the chip set is coupled to the processing The USB display device and the storage unit, the method comprising: decrypting, by using the first core pair, a first encrypted video stream of a first encryption and decryption standard to obtain a first video stream, and using a second video Decrypting the first video stream to obtain a second encrypted video stream; using the first core to execute the first driver to decrypt the second encrypted video stream to obtain a second video stream; using the second core And the first driver decodes the second video stream to obtain a first video data; using the first core to execute the second driver, and decoding the first video Encrypting to obtain an encrypted video material, and transmitting the encrypted video data to the USB display device; decrypting the encrypted video data by the USB display device to obtain a second video data; and using the USB display device Play on one display The obtained second video material.
為使本發明之上述目的、特徵和優點能更明顯易懂,下文特舉一較佳實施例,並配合所附圖式,作詳細說明如下。The above described objects, features and advantages of the present invention will become more apparent from the description of the appended claims.
第1圖係顯示依據本發明一實施例之顯示系統的功能方塊圖。顯示系統100包括一處理器110、一圖形處理器120、一晶片組130、一第一記憶體單元140、一第二記憶體單元150、一儲存單元160以及一USB顯示裝置170。晶片組130係作為顯示系統100中之各元件之間的連接橋樑。舉例來說,晶片組130可包括一北橋晶片131及一南橋晶片132,北橋晶片131及南橋晶片132係透過一內部匯流排133相連接。北橋晶片131係用以連接操作頻率較高之元件,例如處理器110、圖形處理器120及第一記憶體單元140(例如系統記憶體)。南橋晶片132係用以連接操作頻率較低的元件(例如PCI裝置)及輸入/輸出週邊設備,例如是USB顯示裝置170、或外部的播放裝置(例如BluRay光碟機)。1 is a functional block diagram showing a display system in accordance with an embodiment of the present invention. The display system 100 includes a processor 110, a graphics processor 120, a chipset 130, a first memory unit 140, a second memory unit 150, a storage unit 160, and a USB display device 170. Wafer set 130 serves as a bridge between the various components in display system 100. For example, the wafer set 130 can include a north bridge wafer 131 and a south bridge wafer 132. The north bridge wafer 131 and the south bridge wafer 132 are connected by an internal bus bar 133. The north bridge chip 131 is used to connect components with higher operating frequencies, such as the processor 110, the graphics processor 120, and the first memory unit 140 (eg, system memory). The south bridge wafer 132 is used to connect components with lower operating frequencies (such as PCI devices) and input/output peripheral devices, such as a USB display device 170 or an external playback device (such as a BluRay optical disk drive).
在一實施例中,顯示系統100可選擇性地包括一外接光碟機180。外接光碟機180係耦接於南橋晶片132,用以播放具有內容保護(例如AACS加密)之音訊/視訊資料。In an embodiment, display system 100 can optionally include an external optical drive 180. The external optical disk drive 180 is coupled to the south bridge chip 132 for playing audio/video data with content protection (for example, AACS encryption).
第一記憶體單元140係為一系統記憶體。當處理器110對具有內容保護(例如CSS或AACS)之視訊資料進行解密(decrypt),解密後所得到的音訊/視訊暫存資料(例如音訊流 及視訊流)會先存放於第一記憶體單元140中。第二記憶體單元150係為圖形處理器120專用的圖形記憶體,用以儲存圖形處理器120之圖形資料或是解碼(decode)後的視訊資料。The first memory unit 140 is a system memory. When the processor 110 decrypts the video data with content protection (such as CSS or AACS), the decrypted audio/video temporary data (such as audio stream) And the video stream) is first stored in the first memory unit 140. The second memory unit 150 is a graphics memory dedicated to the graphics processor 120 for storing graphics data of the graphics processor 120 or decoded video data.
儲存單元160係儲存一作業系統161、一第一驅動程式162及一第二驅動程式163。處理器110係執行作業系統161以做為一作業平台。第一驅動程式162係為圖形處理器120之專用驅動程式,可對具有內容保護之視訊資料(例如用AES標準加密之H.264視訊流)進行解密及透過圖形處理器120解碼視訊流(例如H.264視訊流)。第二驅動程式163係為USB顯示裝置170之專用驅動程式(亦稱為掛鉤驅動程式(hook driver)),用以透過圖形處理器120由第二記憶體單元150取得解碼後的視訊資料,並在USB顯示裝置170上播放所取得的視訊資料。The storage unit 160 stores an operating system 161, a first driver 162, and a second driver 163. The processor 110 executes the operating system 161 as a work platform. The first driver 162 is a dedicated driver of the graphics processor 120. The video data with content protection (for example, an H.264 video stream encrypted by the AES standard) can be decrypted and the video stream can be decoded by the graphics processor 120 (for example, H.264 video streaming). The second driver 163 is a dedicated driver (also referred to as a hook driver) of the USB display device 170 for obtaining the decoded video data from the second memory unit 150 through the graphics processor 120, and The acquired video material is played on the USB display device 170.
在另一實施例中,儲存單元160亦可選擇性地儲存具有內容保護之媒體檔案164。處理器110可由儲存單元160儲存具有內容保護(例如AACS加密)之媒體檔案164並進行資料保護解碼(decrypt)。In another embodiment, the storage unit 160 can also selectively store the media archive 164 with content protection. The processor 110 may store the media archive 164 with content protection (eg, AACS encryption) by the storage unit 160 and perform data protection decryption.
第2A圖係顯示依據本發明另一實施例之顯示系統200A的功能方塊圖。請同時參考第1圖及第2A圖,顯示系統200A中之部分元件功能係與顯示系統100中之元件相同,例如晶片組230A(包括北橋晶片231A及南橋晶片232A)、儲存單元260A(包括作業系統261A、第一驅動程式262A及第二驅動程式263A)以及USB顯示裝置270A。顯示系統200A與顯示系統100之差別在於處理器210A係 包括一第一核心211A及一第二核心212A,其中第一核心211A之功能係與處理器110相同,而第二核心212A之功能係與圖形處理器120相同。換言之,處理器210A係同時整合了一般處理器及圖形處理器之功能(例如Intel Core 2 Duo處理器),且處理器210A更使用一整合記憶體架構(Unified Memory Architecture),意即第一核心211A及第二核心212A存取資料均是使用記憶體單元240A。更詳細而言,記憶體單元240A除了是系統記憶體之外,亦是圖形記憶體。Figure 2A is a functional block diagram showing a display system 200A in accordance with another embodiment of the present invention. Referring to FIG. 1 and FIG. 2A simultaneously, some of the component functions in the system 200A are the same as those in the display system 100, such as the chipset 230A (including the north bridge wafer 231A and the south bridge wafer 232A), and the storage unit 260A (including the operation). System 261A, first driver 262A and second driver 263A) and USB display device 270A. The difference between the display system 200A and the display system 100 is that the processor 210A is The first core 211A and the second core 212A are included. The function of the first core 211A is the same as that of the processor 110, and the function of the second core 212A is the same as the graphics processor 120. In other words, the processor 210A integrates the functions of a general processor and a graphics processor (for example, an Intel Core 2 Duo processor), and the processor 210A further uses a unified memory architecture, that is, the first core. The 211A and the second core 212A access data are all using the memory unit 240A. In more detail, the memory unit 240A is a graphic memory in addition to the system memory.
第2B圖係顯示依據本發明又一實施例之顯示系統200B的功能方塊圖。請同時參考第2A及2B圖,顯示系統200B中之部分元件功能係與顯示系統200A中之元件相同,例如是儲存單元260B(包括作業系統261B、第一驅動程式262B及第二驅動程式263B)以及USB顯示裝置270B。顯示系統200B與顯示系統200A之差別在於顯示系統200B係使用一平台控制集線器(Platform Control Hub,PCH)290用以取代原本顯示系統200A中之北橋晶片231A的部份功能(例如即時時鐘)以及南橋晶片232A的全部功能,且處理器210B係透過一直接媒體介面(Direct Media Interface,DMI)與平台控制集線器290連接。處理器210B(例如是Intel i3、i5、i7處理器),其包括第一核心211B、第二核心212B及一整合記憶體控制器213B,其中第一核心211B及第二核心212B之功能係分別與第一核心211A及第二核心212A相同。注意的是,顯示系統200B中之記憶體單元240B是直接與處理器210B中的整合記憶 體控制器電性連接,且記憶體單元240B同樣是使用整合記憶體架構(Unified Memory Architecture),以供第一核心211B(一般處理運算核心)及第二核心212B(圖形處理核心)透過整合記憶體控制器213B存取記憶體單元240B中之資料。2B is a functional block diagram showing a display system 200B in accordance with still another embodiment of the present invention. Referring to FIGS. 2A and 2B, some of the component functions in the system 200B are the same as those in the display system 200A, such as the storage unit 260B (including the operating system 261B, the first driver 262B, and the second driver 263B). And a USB display device 270B. The display system 200B differs from the display system 200A in that the display system 200B uses a platform control hub (PCH) 290 to replace some of the functions of the north bridge chip 231A in the display system 200A (such as an instant clock) and the south bridge. The full functionality of the chip 232A, and the processor 210B is coupled to the platform control hub 290 via a Direct Media Interface (DMI). The processor 210B (for example, an Intel i3, i5, i7 processor) includes a first core 211B, a second core 212B, and an integrated memory controller 213B, wherein the functions of the first core 211B and the second core 212B are respectively The same as the first core 211A and the second core 212A. It is noted that the memory unit 240B in the display system 200B is directly integrated with the memory in the processor 210B. The body controller is electrically connected, and the memory unit 240B also uses a unified memory architecture for the first core 211B (general processing core) and the second core 212B (graphic processing core) to pass through the integrated memory. The body controller 213B accesses the data in the memory unit 240B.
對本發明來說,無論是顯示系統100、200A或200B,均可由USB顯示裝置播放具有內容保護的高畫質解析度之視訊檔案。為便於說明,後述之實施例係以第1圖之顯示系統100為例。熟習本發明領域之技術人員當可了解將本發明顯示系統100之操作應用於顯示系統200A及200B。For the present invention, regardless of the display system 100, 200A or 200B, a video file with high image resolution with content protection can be played by the USB display device. For convenience of explanation, the embodiment described later is exemplified by the display system 100 of Fig. 1. Those skilled in the art of the invention will appreciate that the operation of the display system 100 of the present invention can be applied to display systems 200A and 200B.
第3圖係顯示依據本發明一實施例之顯示系統100的軟體/硬體架構的示意圖。請同時參考第1圖及第3圖,顯示系統100(或顯示系統200A、200B)之軟體/硬體之處理流程大致可分為階段310~350共5個階段。階段310亦可稱為使用者模式未保護之基礎架構(User mode unprotected infrastructure)。舉例來說,在階段310,顯示系統100係可藉由播放軟體(例如Power DVD、Media Player等)播放具有內容保護(例如AACS加密)的視訊檔案。接著,處理器110係對具有內容保護之視訊內容(包括第一加密音訊流及第一加密視訊流)進行解密,並進入階段320。Figure 3 is a schematic diagram showing the software/hardware architecture of display system 100 in accordance with an embodiment of the present invention. Please refer to FIG. 1 and FIG. 3 at the same time, and the processing flow of the software/hardware of the system 100 (or the display system 200A, 200B) can be roughly divided into five stages of stages 310-350. Stage 310 can also be referred to as User mode unprotected infrastructure. For example, at stage 310, display system 100 can play a video archive with content protection (eg, AACS encryption) via a playback software (eg, Power DVD, Media Player, etc.). Next, the processor 110 decrypts the video content with content protection (including the first encrypted audio stream and the first encrypted video stream) and proceeds to stage 320.
階段320亦可稱為使用者模式受保護之基礎架構(User mode protected infrastructure)。處理器110係將解密後所得到第一音訊流(例如立體聲或杜比編碼)及第一視訊流(例如H.264視訊流)儲存於第一記憶體單元140,再將第一音訊流及第一視訊流利用另一資料加密技術(例如AES、3AES) 進行加密以得到第二加密音訊流及第二加密視訊流,並將第二加密音訊流及第二加密視訊流分別傳送至對應的音訊裝置(例如音效卡)及圖形處理器120,並進入階段330。注意的是,具有內容保護(例如AACS)的視訊內容(例如BluRay光碟)中,音訊信號較不受限制,音訊裝置可在收到第二加密音訊流後,對第二加密音訊流進行解密以得到第二音訊流,再對第二音訊流解碼即可得到原本的音訊資料,可供播放。Stage 320 may also be referred to as a User mode protected infrastructure. The processor 110 stores the first audio stream (such as stereo or Dolby code) obtained after decryption and the first video stream (for example, H.264 video stream) in the first memory unit 140, and then the first audio stream and The first video stream utilizes another data encryption technology (eg AES, 3AES) Encrypting to obtain a second encrypted audio stream and a second encrypted video stream, and transmitting the second encrypted audio stream and the second encrypted video stream to a corresponding audio device (eg, a sound card) and the graphics processor 120, respectively, and entering the stage 330. Note that in video content with content protection (eg, AACS) (eg, BluRay disc), the audio signal is less restricted, and the audio device can decrypt the second encrypted audio stream after receiving the second encrypted audio stream. The second audio stream is obtained, and then the second audio stream is decoded to obtain the original audio data for playing.
階段330亦可稱為驅動程式核心模式保護環境(Drivers Kernel Mode Protected Environment)。在階段330中,圖形處理器120之第一驅動程式162係將第二加密視訊流進行解密以得到第二視訊流,且圖形處理器120及/或第一驅動程式162係將第二視訊流解碼以得到原始的視訊資料。在顯示系統100的硬體/軟體架構中,圖形處理器120對解密過的視訊流進行解碼後,所得到原始的視訊資料係儲存於第二記憶體單元150中。需注意的是,在上述資料路徑中所傳輸的原始視訊資料均是未經過加密的。此時USB顯示裝置170之第二驅動程式163係發送一請求信號至第一驅動程式162,藉以要求第一驅動程式162透過圖形處理器120將未受保護之原始視訊資料傳送至第二驅動程式163,並進入階段340。Stage 330 can also be referred to as Drivers Kernel Mode Protected Environment. In stage 330, the first driver 162 of the graphics processor 120 decrypts the second encrypted video stream to obtain a second video stream, and the graphics processor 120 and/or the first driver 162 will stream the second video stream. Decode to get the original video material. In the hardware/software architecture of the display system 100, after the graphics processor 120 decodes the decrypted video stream, the original video data obtained is stored in the second memory unit 150. It should be noted that the original video data transmitted in the above data path is unencrypted. At this time, the second driver 163 of the USB display device 170 sends a request signal to the first driver 162, so that the first driver 162 is required to transmit the unprotected original video data to the second driver through the graphics processor 120. 163, and enters stage 340.
需注意的是在階段310~320,均是屬於軟體的部分,意即使用處理器110進行相關的加解密操作。圖形處理器120亦具有專用的硬體電路(例如H.264解碼器)可對視訊流進行解碼,但仍需利用第一驅動程式162來控制以進行操 作。更詳細而言,在階段330中之核心模式,第一驅動程式162會利用處理器110及圖形處理器120對視訊流(例如H.264視訊流)進行解碼。換言之,圖形處理器120及第一驅動程式均可用以對視訊流解碼。It should be noted that in stages 310-320, they are all part of the software, that is, the processor 110 is used to perform related encryption and decryption operations. The graphics processor 120 also has a dedicated hardware circuit (such as an H.264 decoder) to decode the video stream, but still needs to be controlled by the first driver 162 for operation. Work. In more detail, in the core mode in stage 330, the first driver 162 decodes the video stream (eg, H.264 video stream) using the processor 110 and the graphics processor 120. In other words, both the graphics processor 120 and the first driver can be used to decode the video stream.
在階段340,第二驅動程式163係將來自第一驅動程式162之原始視訊資料利用處理器110進行加密(例如使用AES加密),並將加密後的原始視訊資料傳送至USB顯示裝置170。USB顯示裝置170再對所接收加密後的原始視訊資料進行解碼,並將解碼所得的原始視訊資料透過類比顯示介面或是數位顯示介面傳送至顯示器(未繪示),並進入階段350。因USB顯示裝置170可對所接收的加密原始視訊資料進行解密以取得原始視訊資料,所以無論USB顯示裝置170透過類比顯示介面或是數位顯示介面在顯示器上播放原始視訊資料均不會受到限制,意即可以不必將高畫質解析度之畫面降階顯示。在階段350中,顯示器可直接播放來自USB顯示裝置170之原始視訊資料。熟習本發明領域之技術人員當了解,本發明亦可選擇傳統方式透過圖形處理器120或其第一驅動程式162對視訊流進行解碼以得到視訊資料,並由圖形處理器120透過類比顯示介面(對於有內容保護之高畫質解析度的視訊內容,需將解析度降階)或數位顯示介面在顯示器上播放視訊資料。In stage 340, the second driver 163 encrypts the original video data from the first driver 162 with the processor 110 (eg, using AES encryption) and transmits the encrypted original video material to the USB display device 170. The USB display device 170 decodes the received original video data, and transmits the decoded original video data to a display (not shown) through an analog display interface or a digital display interface, and proceeds to stage 350. Since the USB display device 170 can decrypt the received encrypted original video data to obtain the original video data, the USB display device 170 can display the original video data on the display through the analog display interface or the digital display interface. This means that it is not necessary to reduce the display of the image with high image quality. In stage 350, the display can directly play the original video material from the USB display device 170. It will be apparent to those skilled in the art that the present invention may also select a conventional manner to decode a video stream through the graphics processor 120 or its first driver 162 to obtain video data, and the graphics processor 120 transmits an analog display interface ( For video content with high image resolution with content protection, the resolution must be reduced or the digital display interface is used to play video data on the display.
第4圖係顯示依據本發明一實施例中用於顯示系統100之顯示方法的流程圖。請同時參考第1圖及第4圖。在步驟S410,處理器110係對以一第一加解密標準(例如AACS先進存取內容系統加解密標準)之一第一加密視訊流 解密以得到一第一視訊流(例如H.264視訊流),並以一第二加解密標準(例如AES先進加解密標準)對該第一視訊流加密以得到一第二加密視訊流。在步驟S420,處理器110係執行第一驅動程式162對第二加密視訊流解密以得到一第二視訊流(例如H.264視訊流)。在步驟S430,圖形處理器120及第一驅動程式162係對該第二視訊流進行解碼以得到一視訊資料。在步驟S440,第二驅動程式163係透過處理器110對解碼所得的視訊資料進行加密以得到加密視訊資料,並將加密視訊資料傳送至USB顯示裝置170。在步驟S450,USB顯示裝置170係對所接收的加密視訊資料進行解密以得到原始的視訊資料。在步驟S460,USB顯示裝置170係可於一顯示器播放解密所得的視訊資料。4 is a flow chart showing a display method for display system 100 in accordance with an embodiment of the present invention. Please also refer to Figures 1 and 4. In step S410, the processor 110 is configured to first encrypt the video stream by using one of the first encryption and decryption standards (for example, AACS Advanced Access Content System encryption and decryption standard). Decrypting to obtain a first video stream (such as an H.264 video stream), and encrypting the first video stream with a second encryption and decryption standard (such as AES advanced encryption and decryption standard) to obtain a second encrypted video stream. In step S420, the processor 110 executes the first driver 162 to decrypt the second encrypted video stream to obtain a second video stream (for example, an H.264 video stream). In step S430, the graphics processor 120 and the first driver 162 decode the second video stream to obtain a video material. In step S440, the second driver 163 encrypts the decoded video data through the processor 110 to obtain the encrypted video data, and transmits the encrypted video data to the USB display device 170. In step S450, the USB display device 170 decrypts the received encrypted video material to obtain the original video material. In step S460, the USB display device 170 can play the decrypted video data on a display.
第5圖係顯示依據本發明另一實施例中用於顯示系統200A或200B之顯示方法的流程圖。請同時參考第2圖及第5圖,在此實施例中係以顯示系統200A為例進行說明,熟習本發明領域之技藝者可了解如何將顯示系統200A之操作應用於顯示系統200B。在步驟S510,處理器210A之第一核心211A係對以一第一加解密標準(例如AACS先進存取內容系統加解密標準)之一第一加密視訊流解密以得到一第一視訊流(例如H.264視訊流),並以一第二加解密標準(例如AES先進加解密標準)對該第一視訊流加密以得到一第二加密視訊流。在步驟S520,處理器210A之第一核心211A係執行第一驅動程式262A對第二加密視訊流解密以得到一第二視訊流(例如H.264視訊流)。在步驟S530,處理器210A之第二核心212A及第一驅動程式262A對第 二視訊流進行解碼以得到一視訊資料。在步驟S540,第二驅動程式係透過處理器210A之第一核心211A對解碼所得的視訊資料進行加密以得到加密視訊資料,並將加密視訊資料傳送至USB顯示裝置270A。在步驟S550,USB顯示裝置270A係對所接收的加密視訊資料進行解密以得到視訊資料。在步驟S560,USB顯示裝置270A係可於一顯示器播放解密所得的視訊資料。Figure 5 is a flow chart showing a display method for display system 200A or 200B in accordance with another embodiment of the present invention. Please refer to FIG. 2 and FIG. 5 at the same time. In this embodiment, the display system 200A is taken as an example. Those skilled in the art can understand how to apply the operation of the display system 200A to the display system 200B. In step S510, the first core 211A of the processor 210A decrypts the first encrypted video stream in one of the first encryption and decryption standards (for example, the AACS Advanced Access Content System encryption and decryption standard) to obtain a first video stream (for example, H.264 video stream), and encrypting the first video stream with a second encryption and decryption standard (such as AES advanced encryption and decryption standard) to obtain a second encrypted video stream. In step S520, the first core 211A of the processor 210A executes the first driver 262A to decrypt the second encrypted video stream to obtain a second video stream (for example, an H.264 video stream). In step S530, the second core 212A of the processor 210A and the first driver 262A pair The two video streams are decoded to obtain a video material. In step S540, the second driver encrypts the decoded video data through the first core 211A of the processor 210A to obtain the encrypted video data, and transmits the encrypted video data to the USB display device 270A. In step S550, the USB display device 270A decrypts the received encrypted video material to obtain video data. In step S560, the USB display device 270A can play the decrypted video data on a display.
需注意的是,第4圖及第5圖之顯示方法的流程僅描述顯示系統100及200A/200B如何透過USB顯示裝置播放具有內容保護的視訊內容。在顯示系統100及200A/200B中沒有受到保護的視訊流或原始的視訊資料之資料路徑已在前述實施例中揭露,於此不再贅述。It should be noted that the flow of the display methods of FIGS. 4 and 5 only describes how the display systems 100 and 200A/200B play video content with content protection through the USB display device. The data path of the unprotected video stream or the original video data in the display systems 100 and 200A/200B has been disclosed in the foregoing embodiments, and details are not described herein.
本發明雖以較佳實施例揭露如上,然其並非用以限定本發明的範圍,任何所屬技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可做些許的更動與潤飾,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。The present invention has been disclosed in the above preferred embodiments, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can make a few changes without departing from the spirit and scope of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.
100、200A、200B‧‧‧顯示系統100, 200A, 200B‧‧‧ display system
110、210A、210B‧‧‧處理器110, 210A, 210B‧‧‧ processor
120、220B‧‧‧圖形處理器120, 220B‧‧‧ graphics processor
130、230A‧‧‧晶片組130, 230A‧‧‧ chipsets
131、231A‧‧‧北橋晶片131, 231A‧‧‧ Northbridge
132、232A‧‧‧南橋晶片132, 232A‧‧‧ South Bridge Wafer
133‧‧‧內部匯流排133‧‧‧Internal busbar
140‧‧‧第一記憶體單元140‧‧‧First memory unit
150‧‧‧第二記憶體單元150‧‧‧Second memory unit
160、260A、260B‧‧‧儲存單元160, 260A, 260B‧‧‧ storage unit
161、261A、261B‧‧‧作業系統161, 261A, 261B‧‧‧ operating system
162、262A、262B‧‧‧第一驅動程式162, 262A, 262B‧‧‧ first driver
163、263A、263B‧‧‧第二驅動程式163, 263A, 263B‧‧‧ second driver
164、264A、264B‧‧‧媒體檔案164, 264A, 264B‧‧‧ media files
170、270A、270B‧‧‧USB顯示裝置170, 270A, 270B‧‧‧ USB display device
180‧‧‧外接光碟機180‧‧‧External CD player
211A、211B‧‧‧第一核心211A, 211B‧‧‧ first core
212A、212B‧‧‧第二核心212A, 212B‧‧‧ second core
213B‧‧‧整合記憶體控制器213B‧‧‧ integrated memory controller
240A、240B、250B‧‧‧記憶體單元240A, 240B, 250B‧‧‧ memory unit
290‧‧‧平台控制集線器290‧‧‧ Platform Control Hub
310-350‧‧‧階段310-350‧‧‧ stage
第1圖係顯示依據本發明一實施例之顯示系統100的功能方塊圖。1 is a functional block diagram of a display system 100 in accordance with an embodiment of the present invention.
第2A圖係顯示依據本發明另一實施例之顯示系統200A的功能方塊圖。Figure 2A is a functional block diagram showing a display system 200A in accordance with another embodiment of the present invention.
第2B圖係顯示依據本發明又一實施例之顯示系統200B的功能方塊圖。2B is a functional block diagram showing a display system 200B in accordance with still another embodiment of the present invention.
第3圖係顯示依據本發明一實施例之顯示系統100的軟體/硬體架構的示意圖。Figure 3 is a schematic diagram showing the software/hardware architecture of display system 100 in accordance with an embodiment of the present invention.
第4圖係顯示依據本發明一實施例中用於顯示系統100之顯示方法的流程圖。4 is a flow chart showing a display method for display system 100 in accordance with an embodiment of the present invention.
第5圖係顯示依據本發明另一實施例中用於顯示系統200A及200B之顯示方法的流程圖。Figure 5 is a flow chart showing a display method for display systems 200A and 200B in accordance with another embodiment of the present invention.
100‧‧‧顯示系統100‧‧‧Display system
110‧‧‧處理器110‧‧‧ processor
120‧‧‧圖形處理器120‧‧‧graphic processor
130‧‧‧晶片組130‧‧‧chipset
131‧‧‧北橋晶片131‧‧‧ North Bridge Chip
132‧‧‧南橋晶片132‧‧‧South Bridge Chip
133‧‧‧內部匯流排133‧‧‧Internal busbar
140‧‧‧第一記憶體單元140‧‧‧First memory unit
150‧‧‧第二記憶體單元150‧‧‧Second memory unit
160‧‧‧儲存單元160‧‧‧storage unit
161‧‧‧作業系統161‧‧‧ operating system
162‧‧‧第一驅動程式162‧‧‧First driver
163‧‧‧第二驅動程式163‧‧‧Second driver
164‧‧‧媒體檔案164‧‧‧Media files
170‧‧‧USB顯示裝置170‧‧‧USB display device
180‧‧‧外接光碟機180‧‧‧External CD player
Claims (10)
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TW200821847A (en) * | 2006-06-16 | 2008-05-16 | Standard Microsyst Smc | Peripheral sharing USB hub for a wireless host |
US20080120676A1 (en) * | 2006-11-22 | 2008-05-22 | Horizon Semiconductors Ltd. | Integrated circuit, an encoder/decoder architecture, and a method for processing a media stream |
US20080263621A1 (en) * | 2007-04-17 | 2008-10-23 | Horizon Semiconductors Ltd. | Set top box with transcoding capabilities |
CN102314914A (en) * | 2010-07-08 | 2012-01-11 | 索尼公司 | Signal conditioning package, information processing method and program |
US20120155233A1 (en) * | 2009-05-20 | 2012-06-21 | Sony Dadc Austria Ag | Method for copy protection |
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TW200821847A (en) * | 2006-06-16 | 2008-05-16 | Standard Microsyst Smc | Peripheral sharing USB hub for a wireless host |
US20080120676A1 (en) * | 2006-11-22 | 2008-05-22 | Horizon Semiconductors Ltd. | Integrated circuit, an encoder/decoder architecture, and a method for processing a media stream |
US20080263621A1 (en) * | 2007-04-17 | 2008-10-23 | Horizon Semiconductors Ltd. | Set top box with transcoding capabilities |
US20120155233A1 (en) * | 2009-05-20 | 2012-06-21 | Sony Dadc Austria Ag | Method for copy protection |
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