公开(公告)号：US07409329B2

公开(公告)日：2008-08-05

申请号：US10871209

申请日：2004-06-18

申请人： Cam Minh Luu ,  Keith L. Klingler ,  Glen A. Grover

发明人： Cam Minh Luu ,  Keith L. Klingler ,  Glen A. Grover

IPC分类号： G06F17/50

CPC分类号： G06F17/5022

摘要： A system and method of verifying the format of a simulated signal produced during the simulation of an electronic circuit is disclosed. One aspect of the present invention includes a method of extracting timing information from a single simulated serial digital audio signal that comprises both data and clock. An embodiment of the present invention may verify operation of the simulated electronic circuit by setting the value of a first simulated signal according to predetermined events that occur in a second simulated signal. The second simulated signal may be parsed using timing information extracted from the second simulated signal, and the format of the second simulated signal may be matched against a predetermined format based upon the results of the parsing. An embodiment of the present invention may, for example, be employed during software simulation to verify the operation of exemplary devices such as application specific circuits (ASICs) used in the generation of signals meeting the Sony/Philips Digital Interconnect Format (SPDIF).

摘要翻译： 公开了一种验证电子电路模拟期间产生的模拟信号的格式的系统和方法。 本发明的一个方面包括从包括数据和时钟的单个模拟串行数字音频信号中提取定时信息的方法。 本发明的实施例可以根据在第二模拟信号中发生的预定事件设定第一模拟信号的值来验证模拟电子电路的操作。 可以使用从第二模拟信号提取的定时信息来解析第二模拟信号，并且可以基于解析的结果将第二模拟信号的格式与预定格式进行匹配。 例如，在软件仿真期间可以采用本发明的一个实施例来验证诸如在产生满足索尼/飞利浦数字互联格式（SPDIF）的信号的生成中使用的应用专用电路（ASIC）等示例性设备的操作。

公开(公告)号：US5497404A

公开(公告)日：1996-03-05

申请号：US910192

申请日：1992-07-14

申请人： Glen A. Grover ,  Paul Moroney

发明人： Glen A. Grover ,  Paul Moroney

IPC分类号： H04B14/04 ,  H04N7/54 ,  H04N7/60 ,  H04N19/00 ,  H04N19/89 ,  H04N21/236 ,  H04N21/434 ,  H04J3/06 ,  H04L7/00 ,  H04L25/38

CPC分类号： H04N21/434 ,  H04N19/61 ,  H04N19/89 ,  H04N21/236 ,  H04N7/54

摘要： A succession of variable length data packets containing a header portion and data portion are received. Selected data from the data packet headers is stored in designated locations of a header memory. A data packet start address is provided with each stored header portion to designate a location in a data memory for commencing the storage of data contained in a corresponding data packet. The data from the received data packets is stored commencing in the data memory locations designated by the corresponding data packet start addresses. In an illustrated embodiment, the data packets are macroblocks from digitized television frames. A plurality of next data packet position indicators are provided in the data, for use in periodically verifying macroblock boundaries during the receipt of the television data and to provide a rapid recovery from a transmission error affecting the actual or identified length of a macroblock.

摘要翻译： 接收包含报头部分和数据部分的一系列可变长度数据分组。 来自数据包头部的所选数据被存储在标题存储器的指定位置。 每个存储的标题部分提供数据分组起始地址，以指定数据存储器中的位置，以便开始存储包含在相应的数据分组中的数据。 来自接收到的数据分组的数据被存储在由对应的数据分组起始地址指定的数据存储单元中。 在所示实施例中，数据分组是来自数字化电视帧的宏块。 在数据中提供多个下一个数据分组位置指示符，用于在接收电视数据期间周期性地验证宏块边界，并且从影响宏块的实际或识别长度的传输误差提供快速恢复。

公开(公告)号：US07508874B2

公开(公告)日：2009-03-24

申请号：US10060118

申请日：2002-01-29

申请人： Jason C. Demas ,  Sandeep Bhatia ,  Xuemin Sherman Chen ,  Srinivasa Mogathala Prabhakara Reddy ,  Girish Raghunath Humlani ,  Marcus Kellerman ,  Ramanujan Valmiki ,  Lakshmikanth Pai ,  Pramod Chandraiah ,  Mahadevan Sivagururaman ,  Glen A. Grover ,  Bhaskar Sherigar ,  Vivian Hsiun ,  Benjamin S. Giese

发明人： Jason C. Demas ,  Sandeep Bhatia ,  Xuemin Sherman Chen ,  Srinivasa Mogathala Prabhakara Reddy ,  Girish Raghunath Humlani ,  Marcus Kellerman ,  Ramanujan Valmiki ,  Lakshmikanth Pai ,  Pramod Chandraiah ,  Mahadevan Sivagururaman ,  Glen A. Grover ,  Bhaskar Sherigar ,  Vivian Hsiun ,  Benjamin S. Giese

IPC分类号： H04N7/12

CPC分类号： H04N19/895 ,  H04N19/65 ,  H04N19/89 ,  H04N21/23608 ,  H04N21/4147 ,  H04N21/4325 ,  H04N21/4344 ,  H04N21/440245 ,  H04N21/442

摘要： Error concealment for motion picture expert group (MPEG) decoding with personal video recording functionality. The present invention is operable to perform error concealment of MPEG data within various components within playback, recording, reading and writing data systems. The present invention is operable within existing systems whose components may not be capable of accommodating errors within MPEG data. Whereas prior art systems typically cannot deal with any corruption without either losing the data or suffering some operational failure, the present invention is able to conceal these errors and to continue decoding and presentation of the MPEG data. In certain embodiments, this involves maximizing the available data that contain no errors to conceal those portions of the data that do include errors. The present invention is operable to accommodate various layers while performing error concealment, including the MPEG transport stream layer, the video layer, and the audio layer.

摘要翻译： 用于具有个人视频录制功能的电影专家组（MPEG）解码的错误隐藏。 本发明可操作以在回放，记录，读取和写入数据系统内的各种组件内执行MPEG数据的错误隐藏。 本发明可在现有系统中操作，其组件可能不能适应MPEG数据内的错误。 而现有技术系统通常不能处理任何损坏而不丢失数据或遭受一些操作故障，本发明能够隐藏这些错误并继续解码和呈现MPEG数据。 在某些实施例中，这包括最大化包含没有错误的可用数据以隐藏包括错误的数据的那些部分。 本发明可操作以适应各种层，同时执行错误隐藏，包括MPEG传输流层，视频层和音频层。

公开(公告)号：US06538656B1

公开(公告)日：2003-03-25

申请号：US09640869

申请日：2000-08-18

申请人： Francis Cheung ,  Carolyn B. Walker ,  Glen A. Grover ,  Ben S. Giese

发明人： Francis Cheung ,  Carolyn B. Walker ,  Glen A. Grover ,  Ben S. Giese

IPC分类号： H04J306

CPC分类号： G06T9/007 ,  G09G5/001 ,  G09G5/02 ,  G09G5/024 ,  G09G5/026 ,  G09G5/06 ,  G09G5/12 ,  G09G5/14 ,  G09G5/28 ,  G09G5/346 ,  G09G5/36 ,  G09G2310/0224 ,  G09G2320/0247 ,  G09G2340/02 ,  G09G2340/0407 ,  G09G2340/10 ,  G09G2340/125 ,  G09G2360/02 ,  G09G2360/121 ,  G09G2360/125 ,  G09G2360/128 ,  H04N5/126 ,  H04N5/14 ,  H04N5/4401 ,  H04N5/44504 ,  H04N5/44508 ,  H04N5/44591 ,  H04N5/45 ,  H04N5/46 ,  H04N7/0135 ,  H04N9/45 ,  H04N9/641 ,  H04N9/642 ,  H04N11/143 ,  H04N11/20 ,  H04N19/42 ,  H04N19/423 ,  H04N19/436 ,  H04N19/44 ,  H04N19/61 ,  H04N21/42204 ,  H04N21/42653 ,  H04N21/4305 ,  H04N21/4316 ,  H04N21/434 ,  H04N21/4438 ,  H04N21/47

摘要： A video and graphics system uses multiple transport processors to receive compressed data streams to perform PID and section filtering as well as DVB and DES decryption and to demultiplex them. The compressed data streams may include in-band and out-of-band MPEG Transport streams. The video and graphics system processes the PES into digital audio, MPEG video and message data. A core transport processor includes a PCR recovery module for extracting PCRs contained in the compressed data streams and for providing the extracted PCRs to a video transport processor and an audio decode processor. The PCR recovery module has a direct load capability for receiving user defined PCRs and outputting them instead of outputting the extracted PCRs. The PCR recovery module extracts PCRs from both MPEG Transport streams and DIRECTV transport streams. The core transport processor may also include a transport recorder for storing portions of compressed data streams and a playback circuit for reading the stored portions of the compressed data streams. The playback circuit includes a throttling mechanism and a hold mechanism to prevent buffer overflow.

摘要翻译： 视频和图形系统使用多个传输处理器来接收压缩数据流，以执行PID和部分滤波以及DVB和DES解密，并将其解复用。 压缩数据流可以包括带内和带外MPEG传输流。 视频和图形系统将PES处理成数字音频，MPEG视频和消息数据。 核心传输处理器包括用于提取压缩数据流中包含的PCR的PCR恢复模块，以及将提取的PCR提供给视频传输处理器和音频解码处理器。 PCR恢复模块具有用于接收用户定义的PCR并输出它们的直接负载能力，而不是输出提取的PCR。 PCR恢复模块从MPEG传输流和DIRECTV传输流中提取PCR。 核心传输处理器还可以包括用于存储压缩数据流的部分的传输记录器和用于读取压缩数据流的存储部分的重放电路。 回放电路包括节流机构和保持机构以防止缓冲器溢出。

公开(公告)号：US08472531B2

公开(公告)日：2013-06-25

申请号：US12409439

申请日：2009-03-23

申请人： Jason C. Demas ,  Sandeep Bhatia ,  Xuemin “Sherman” Chen ,  Srinivasa Mogathala Prabhakara Reddy ,  Girish Raghunath Hulmani ,  Marcus Kellerman ,  Ramanujan Valmiki ,  Lakshmikanth Pai ,  Pramod Chandraiah ,  Mahadevan Sivagururaman ,  Glen A. Grover ,  Bhaskar Sherigar ,  Vivian Hsiun ,  Benjamin S. Giese

发明人： Jason C. Demas ,  Sandeep Bhatia ,  Xuemin “Sherman” Chen ,  Srinivasa Mogathala Prabhakara Reddy ,  Girish Raghunath Hulmani ,  Marcus Kellerman ,  Ramanujan Valmiki ,  Lakshmikanth Pai ,  Pramod Chandraiah ,  Mahadevan Sivagururaman ,  Glen A. Grover ,  Bhaskar Sherigar ,  Vivian Hsiun ,  Benjamin S. Giese

IPC分类号： H04N7/12

CPC分类号： H04N19/895 ,  H04N19/65 ,  H04N19/89 ,  H04N21/23608 ,  H04N21/4147 ,  H04N21/4325 ,  H04N21/4344 ,  H04N21/440245 ,  H04N21/442

摘要： Error concealment for motion picture expert group (MPEG) decoding with personal video recording functionality. Error concealment of MPEG data may take place within various components within playback, recording, reading and writing data systems. The error concealment may be provided within existing systems whose components may not be capable of accommodating errors within MPEG data. In certain embodiments, the available data that contain no errors is maximized to conceal those portions of the data that do include errors. Various layers may be accommodated while performing error concealment, including the MPEG transport stream layer, the video layer, and the audio layer.

摘要翻译： 用于具有个人视频录制功能的电影专家组（MPEG）解码的错误隐藏。 MPEG数据的错误隐藏可能发生在播放，记录，读取和写入数据系统内的各种组件内。 错误隐藏可以在其组件可能不能容纳MPEG数据内的错误的现有系统内提供。 在某些实施例中，不包含错误的可用数据被最大化以隐藏包括错误的数据的那些部分。 可以在执行包括MPEG传输流层，视频层和音频层的错误隐藏的同时容纳各种层。

公开(公告)号：US20090257512A1

公开(公告)日：2009-10-15

申请号：US12409439

申请日：2009-03-23

申请人： Jason C. Demas ,  Sandeep Bhatia ,  Xuemin "Sherman" Chen ,  Srinivasa Mogathala Prabhakara Reddy ,  Girish Raghunath Humiani ,  Marcus Kellerman ,  Ramanujan Valmiki ,  Lakshmikanth Pai ,  Pramod Chandraiah ,  Mahadevan Sivagururaman ,  Glen A. Grover ,  Bhaskar Sherigar ,  Vivian Hsiun ,  Benjamin S. Giese

发明人： Jason C. Demas ,  Sandeep Bhatia ,  Xuemin "Sherman" Chen ,  Srinivasa Mogathala Prabhakara Reddy ,  Girish Raghunath Humiani ,  Marcus Kellerman ,  Ramanujan Valmiki ,  Lakshmikanth Pai ,  Pramod Chandraiah ,  Mahadevan Sivagururaman ,  Glen A. Grover ,  Bhaskar Sherigar ,  Vivian Hsiun ,  Benjamin S. Giese

IPC分类号： H04N7/26

CPC分类号： H04N19/895 ,  H04N19/65 ,  H04N19/89 ,  H04N21/23608 ,  H04N21/4147 ,  H04N21/4325 ,  H04N21/4344 ,  H04N21/440245 ,  H04N21/442

摘要： Error concealment for motion picture expert group (MPEG) decoding with personal video recording functionality. Error concealment of MPEG data may take place within various components within playback, recording, reading and writing data systems. The error concealment may be provided within existing systems whose components may not be capable of accommodating errors within MPEG data. In certain embodiments, the available data that contain no errors is maximized to conceal those portions of the data that do include errors. Various layers may be accommodated while performing error concealment, including the MPEG transport stream layer, the video layer, and the audio layer.

摘要翻译： 用于具有个人视频录制功能的电影专家组（MPEG）解码的错误隐藏。 MPEG数据的错误隐藏可能发生在播放，记录，读取和写入数据系统的各种组件内。 错误隐藏可以在其组件可能不能容纳MPEG数据内的错误的现有系统内提供。 在某些实施例中，不包含错误的可用数据被最大化以隐藏包括错误的数据的那些部分。 可以在执行包括MPEG传输流层，视频层和音频层的错误隐藏的同时容纳各种层。