公开(公告)号：US07130425B2

公开(公告)日：2006-10-31

申请号：US11175882

申请日：2005-07-06

Applicant: David A. Strasser ,  Edwin Pang ,  Gabriel Z. Varga

Inventor： David A. Strasser ,  Edwin Pang ,  Gabriel Z. Varga

IPC: H04L9/00

CPC classification number: H04N21/4181 ,  H04L9/0841 ,  H04L9/0891 ,  H04L2209/605 ,  H04N7/1675 ,  H04N21/4367

Abstract: A copy protection (CP) key used by a sending source, such as a POD, to encrypt content such as audio and/or video information is derived by a first key generator associated with a first processor and is locally encrypted by the first processor using a locally generated bus encryption key to produce a bus encrypted CP key that is sent over a local unsecure bus to a second processor, such as a graphics processor. The second processor decrypts the bus encrypted copy key using a decryption engine to obtain the CP key. The second processor receives the encrypted content and in one embodiment, also uses the same decryption engine to decrypt the encrypted content. The first and second processors locally exchange public keys to each locally derive a bus encryption key used to encrypt the CP key before it is sent over the unsecure bus and decrypt the encrypted CP key after it is sent over the bus. The locally exchanged public keys are shorter in length than those used between the CPU and POD to produce the original CP key.

Abstract translation: 由POD等发送源用于加密诸如音频和/或视频信息的内容的复制保护（CP）密钥由与第一处理器相关联的第一密钥生成器导出，并且由第一处理器本地加密使用 本地生成的总线加密密钥，以产生通过本地不安全总线发送到诸如图形处理器的第二处理器的总线加密CP密钥。 第二处理器使用解密引擎解密总线加密复制密钥以获得CP密钥。 第二处理器接收加密的内容，并且在一个实施例中，还使用相同的解密引擎来解密加密的内容。 第一和第二处理器在本机之间本地交换公共密钥本地导出用于在通过不安全总线发送之前对CP密钥进行加密的总线加密密钥，并且在通过总线发送之后解密加密的CP密钥。 本地交换的公钥的长度要比在CPU和POD之间使用的公钥短，以产生原始的CP密钥。

公开(公告)号：US08756626B2

公开(公告)日：2014-06-17

申请号：US11306317

申请日：2005-12-22

Applicant: David A. Strasser

Inventor： David A. Strasser

IPC: H04N7/167 ,  H04N7/16 ,  H04N7/173 ,  G06F15/16 ,  H04N21/43 ,  H04N21/418 ,  H04N21/4623 ,  H04N21/462 ,  H04N21/4143 ,  H04N21/4405 ,  H04N21/4402

CPC classification number: H04N21/4623 ,  H04N21/4143 ,  H04N21/418 ,  H04N21/4181 ,  H04N21/4183 ,  H04N21/4305 ,  H04N21/440218 ,  H04N21/4405 ,  H04N21/4621

Abstract: To receive new services including audio or video content for presentation by a cable-compatible digital television or other digital audio/video receiver, a module may be connected to the HOST-POD interface of the digital television. The module has a receiver for receiving audio or video content in a first compression format, a transcoder for converting said audio or video content from the first compression format into a second, different compression format, and a controller for transmitting the audio or visual content in the second compression format to the digital television over a HOST-POD interface. By using such a module, front-end components of the digital television may be bypassed while back-end components may be utilized to decompress and present the content. The module may be a PC card or smart card for example.

Abstract translation: 为了接收新的服务，包括音频或视频内容，用于由电缆兼容的数字电视或其他数字音频/视频接收机呈现，模块可以连接到数字电视的HOST-POD接口。 该模块具有用于以第一压缩格式接收音频或视频内容的接收器，用于将所述音频或视频内容从第一压缩格式转换成第二不同压缩格式的代码转换器，以及用于将音频或视频内容传输到 通过HOST-POD接口向数字电视提供第二种压缩格式。 通过使用这样的模块，数字电视的前端组件可以被旁路，而后端组件可以用于解压缩并呈现内容。 该模块可以是例如PC卡或智能卡。

公开(公告)号：US06717620B1

公开(公告)日：2004-04-06

申请号：US09096550

申请日：1998-06-12

Applicant: Paul Chow ,  Allen J. Porter ,  David A. Strasser ,  Antonio Asaro ,  Indra Laksono ,  Biljana D. Simsic

Inventor： Paul Chow ,  Allen J. Porter ,  David A. Strasser ,  Antonio Asaro ,  Indra Laksono ,  Biljana D. Simsic

IPC: H04N1104

CPC classification number: H04N19/433 ,  H04N19/44

Abstract: A method and apparatus for decompressing compressed data, which includes video data that has been compressed in accordance with the MPEG 2 standard, wherein the processing begins by retrieving components from a non-local memory at a rate that is independent of the rate in which the components were written into the non-local memory. The components include motion vectors and run/level data. As the components are retrieved from memory, the run/level data is used to produce representations of the uncompressed data. As the representations of the uncompressed data are generated, they are processed based on the motion vector data to recapture the uncompressed data. The uncompressed data is then stored in a frame buffer for subsequent display.

Abstract translation: 一种用于解压缩压缩数据的方法和装置，其包括已经根据MPEG2标准被压缩的视频数据，其中该处理开始于以非速率独立于非本地存储器 组件被写入非本地内存。 这些组件包括运动矢量和运行/电平数据。 当从存储器检索组件时，运行/级别数据用于产生未压缩数据的表示。 当生成未压缩数据的表示时，将基于运动矢量数据对它们进行处理，以重新获取未压缩的数据。 然后将未压缩的数据存储在帧缓冲器中用于随后的显示。

公开(公告)号：US06873735B1

公开(公告)日：2005-03-29

申请号：US09777252

申请日：2001-02-05

Applicant: Milivoje Aleksic ,  David A. Strasser ,  Allen Porter ,  Daniel Wai-him Wong

Inventor： Milivoje Aleksic ,  David A. Strasser ,  Allen Porter ,  Daniel Wai-him Wong

IPC: H04N19/89 ,  G06K9/36

CPC classification number: H04N19/89 ,  H04N19/45

Abstract: A system and methods are shown for improved processing of motion compensated video. A software driver handles image data related to motion compensated video. The image data includes IDCT coefficients and motion compensation vector data. A unique identifier is attached to the image data, preserving the relationship between the IDCT coefficients and motion compensated vector data related to an image block. The software driver sends the IDCT coefficients to an IDCT component. The IDCT coefficients are processed and an interrupt is sent to the software driver including the unique identifier of the processed IDCT coefficients. The software driver sends the motion compensation vector data related to the unique identifier in the interrupt. A 3D pipe receives the motion compensation vector data and reads the corresponding processed IDCT data. The 3D pipe sends an interrupt allowing the software driver to submit new IDCT coefficients as the 3D pipe processes the current motion compensation data with the read IDCT data. The 3D pipe processes the motion compensation data along with the read IDCT data to generate at least a portion of an image. The image portion is stored in a frame buffer until it is ready to be displayed.

Abstract translation: 显示了用于改进运动补偿视频处理的系统和方法。 软件驱动程序处理与运动补偿视频有关的图像数据。 图像数据包括IDCT系数和运动补偿矢量数据。 唯一标识符附加到图像数据，保留IDCT系数与与图像块相关的运动补偿矢量数据之间的关系。 软件驱动程序将IDCT系数发送到IDCT组件。 处理IDCT系数，并向软件驱动器发送一个中断，包括处理的IDCT系数的唯一标识符。 软件驱动程序在中断中发送与唯一标识符相关的运动补偿矢量数据。 3D管道接收运动补偿矢量数据并读取相应处理的IDCT数据。 3D管道发送中断，允许软件驱动程序提交新的IDCT系数，因为3D管道使用读取的IDCT数据处理当前的运动补偿数据。 3D管道与读取的IDCT数据一起处理运动补偿数据以产生图像的至少一部分。 图像部分存储在帧缓冲器中，直到它准备好显示为止。

公开(公告)号：US06519286B1

公开(公告)日：2003-02-11

申请号：US09064803

申请日：1998-04-22

Applicant: Allen J. Porter ,  David A. Strasser ,  Paul Chow

Inventor： Allen J. Porter ,  David A. Strasser ,  Paul Chow

IPC: H04B166

CPC classification number: H04B1/66 ,  H04N19/423 ,  H04N19/426 ,  H04N19/44 ,  H04N19/61 ,  H04N19/90

Abstract: A method and apparatus for decoding a stream of data blocks begins by determining an encoding type of a received data block of the stream of data blocks. When the encoding type of the received data block is of a first encoding type, portions of a reference data block are transferred from non-local memory to a reference section of local memory. As the portions of the reference block are transferred, a first section of local memory is utilized to decode the received data block based on the portions of the reference data block contained in the reference section and a relational data decoding convention. The resulting decoded data block is transferred from the first section of local memory to a second section of local memory.

Abstract translation: 用于解码数据块流的方法和装置通过确定数据块流的接收数据块的编码类型而开始。 当接收到的数据块的编码类型是第一编码类型时，参考数据块的部分从非本地存储器传送到本地存储器的参考部分。 随着参考块的部分被传送，本地存储器的第一部分被用于基于包含在参考部分中的参考数据块的部分和关系数据解码惯例对接收到的数据块进行解码。 所得到的解码数据块从本地存储器的第一部分传送到本地存储器的第二部分。

公开(公告)号：US08196161B2

公开(公告)日：2012-06-05

申请号：US11054470

申请日：2005-02-09

Applicant: David A. Strasser

Inventor： David A. Strasser

IPC: H04N7/167

CPC classification number: H04N21/835 ,  H04H60/23 ,  H04N21/42623 ,  H04N21/434

Abstract: When a stream of packets (e.g. MPEG-2 transport stream) includes certain packets representing unscrambled digital television program content and certain other packets representing the content of a scrambled digital television program that is currently tuned by a receiver, interception of the unscrambled digital television program at an output of the receiver may be prevented by determining whether packets representing program content have an ascertained characteristic (e.g. have a packet ID matching one of a set of packet IDs) that uniquely identifies the packets as representing content of the scrambled program. For packets not having the characteristic, delivery to the output of the digital television receiver in an unscrambled state may be prevented, e.g., by discarding the packet or by overwriting its payload.

Abstract translation: 当分组流（例如MPEG-2传输流）包括代表未加扰的数字电视节目内容的某些分组和表示当前由接收机调谐的加扰数字电视节目的内容的某些其他分组时，截取未加扰的数字电视节目 可以通过确定表示节目内容的分组是否具有将所述分组唯一地标识为表示加扰节目的内容的确定特征（例如，具有匹配一组分组ID的分组ID）来防止接收机的输出。 对于不具有特征的分组，可以例如通过丢弃分组或重写其有效载荷来防止以未扰频状态传送到数字电视接收机的输出。

公开(公告)号：US07440677B2

公开(公告)日：2008-10-21

申请号：US11019246

申请日：2004-12-23

Applicant: David A. Strasser

Inventor： David A. Strasser

IPC: H04N7/08

CPC classification number: H04N5/913 ,  H04N2005/91328

Abstract: To detect at least one of a copy protection indicator and a redistribution control indicator in an analog video signal, the video format of the analog video signal is determined, e.g., by detecting the horizontal frequency and vertical frequency of the signal. Based at least on the determined video format, a region of the analog video signal that may contain the indicator is identified. The region may for example be one or more video lines in a vertical blanking interval. The region is examined until the indicator is detected. The indicator is confirmed, e.g., by re-detecting one or more occurrences of the same indicator value(s) later in the video signal. Once confirmed, the indicated copy protection and/or redistribution control may be effected by limiting either or both of copying and redistribution of the analog video signal. The indicator may for example be Copy Generation Management System Analog plus Redistribution Control (CGMS-A+RC) information.

Abstract translation: 为了检测模拟视频信号中的复制保护指示符和再分配控制指示符中的至少一个，例如通过检测信号的水平频率和垂直频率来确定模拟视频信号的视频格式。 至少基于所确定的视频格式，识别可以包含指示符的模拟视频信号的区域。 该区域可以例如是垂直消隐间隔中的一个或多个视频行。 检查该区域直到检测到指示符。 例如，通过重新检测视频信号中稍后出现的相同指示符值的一个或多个出现来确认指示符。 一旦被确认，所指示的复制保护和/或再分配控制可以通过限制模拟视频信号的复制和重新分配中的一个或两者来实现。 指示器可以例如是复制生成管理系统模拟加再分配控制（CGMS-A + RC）信息。

公开(公告)号：US09866785B2

公开(公告)日：2018-01-09

申请号：US11839471

申请日：2007-08-15

Applicant: David A. Strasser ,  Larry A. Pearlstein

Inventor： David A. Strasser ,  Larry A. Pearlstein

IPC: H04N5/63 ,  H04N5/775 ,  H04N21/41 ,  H04N21/4147 ,  H04N21/442 ,  H04N21/443

CPC classification number: H04N5/63 ,  H04N5/775 ,  H04N21/4122 ,  H04N21/4147 ,  H04N21/44231 ,  H04N21/443 ,  H04N21/4436

Abstract: One or more components of a video display device such as a television set can be powered down in response to a determination that a video input source has been paused. The video signal provided by the video input source can be analyzed to determine whether the video source is paused. When the video input source is no longer paused, the powered down components can be restored to fill power operation.

公开(公告)号：US20090046205A1

公开(公告)日：2009-02-19

申请号：US11839471

申请日：2007-08-15

Applicant: David A. Strasser ,  Larry A. Pearlstein

Inventor： David A. Strasser ,  Larry A. Pearlstein

IPC: H04N3/24

CPC classification number: H04N5/63 ,  H04N5/775 ,  H04N21/4122 ,  H04N21/4147 ,  H04N21/44231 ,  H04N21/443 ,  H04N21/4436

Abstract: One or more components of a video display device such as a television set can be powered down in response to a determination that a video input source has been paused. The video signal provided by the video input source can be analyzed to determine whether the video source is paused. When the video input source is no longer paused, the powered down components can be restored to fill power operation.

Abstract translation: 响应于视频输入源已经被暂停的确定，可以关闭诸如电视机之类的视频显示设备的一个或多个组件。 可以分析由视频输入源提供的视频信号以确定视频源是否被暂停。 当视频输入源不再暂停时，可以恢复关闭的组件，以充满电源。

公开(公告)号：US06934389B2

公开(公告)日：2005-08-23

申请号：US09798538

申请日：2001-03-02

Applicant: David A. Strasser ,  Edwin Pang ,  Gabriel Z. Varga

Inventor： David A. Strasser ,  Edwin Pang ,  Gabriel Z. Varga

IPC: H04L9/08 ,  H04L9/30 ,  H04N7/167 ,  H04N21/418 ,  H04N21/4367 ,  H04L9/00

CPC classification number: H04N21/4181 ,  H04L9/0841 ,  H04L9/0891 ,  H04L2209/605 ,  H04N7/1675 ,  H04N21/4367

Abstract: A copy protection (CP) key used by a sending source, such as a POD, to encrypt content such as audio and/or video information is derived by a first key generator associated with a first processor and is locally encrypted by the first processor using a locally generated bus encryption key to produce a bus encrypted CP key that is sent over a local unsecure bus to a second processor, such as a graphics processor. The second processor decrypts the bus encrypted copy key using a decryption engine to obtain the CP key. The second processor receives the encrypted content and in one embodiment, also uses the same decryption engine to decrypt the encrypted content. The first and second processors locally exchange public keys to each locally derive a bus encryption key used to encrypt the CP key before it is sent over the unsecure bus and decrypt the encrypted CP key after it is sent over the bus. The locally exchanged public keys are shorter in length than those used between the CPU and POD to produce the original CP key.

Abstract translation: 由POD等发送源用于加密诸如音频和/或视频信息的内容的复制保护（CP）密钥由与第一处理器相关联的第一密钥生成器导出，并且由第一处理器本地加密使用 本地生成的总线加密密钥，以产生通过本地不安全总线发送到诸如图形处理器的第二处理器的总线加密CP密钥。 第二处理器使用解密引擎解密总线加密复制密钥以获得CP密钥。 第二处理器接收加密的内容，并且在一个实施例中，也使用相同的解密引擎来解密加密的内容。 第一和第二处理器在本机之间本地交换公共密钥本地导出用于在通过不安全总线发送之前对CP密钥进行加密的总线加密密钥，并且在通过总线发送之后解密加密的CP密钥。 本地交换的公钥的长度要比在CPU和POD之间使用的公钥短，以产生原始的CP密钥。