公开(公告)号：WO0225951A2

公开(公告)日：2002-03-28

申请号：PCT/US0127171

申请日：2001-08-31

Applicant: GEN INSTRUMENT CORP ,  LIU VINCENT ,  WU SIU WAI ,  CASTELOES MICHAEL ,  STONE ROBERT J ,  LAM REBECCA

Inventor： LIU VINCENT ,  WU SIU-WAI ,  CASTELOES MICHAEL ,  STONE ROBERT J ,  LAM REBECCA

IPC: H04N7/26 ,  H04N21/234 ,  H04N21/2365 ,  H04N21/434 ,  H04N21/44 ,  H04N7/24

CPC classification number: H04N21/23655 ,  H04N19/15 ,  H04N21/2401

Abstract: A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined (102, 104, 106) for each encoder (112, 114, 116) in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a rate mismatch between the output and the input of a decoder buffer (184). A packet processor (250, 350) checks for impending decoder buffer overflow or underflow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or next frame.

Abstract translation: 用于编码和多路复用数字电视数据的多个通道或多个HDTV数字电视数据面板的统计多路复用器。 确定静态多路复用组中的每个编码器（112,114,116）的比特率需求参数（102,104,106），并且基于其需要参数将编码比特率分配给每个信道。 传输比特率作为其需要参数的时滞版本分配给每个信道，以最小化解码器缓冲器（184）的输出和输入之间的速率失配。 分组处理器（250,350）检查即将发生的解码器缓冲器溢出或下溢事件，以设置传输比特率的最小和最大限制。 此外，根据在当前帧或下一帧的解码时间戳（DTS）之前是否可以实现新的传输比特率来设置这些限制。

公开(公告)号：CA2422131C

公开(公告)日：2012-05-15

申请号：CA2422131

申请日：2001-08-31

Applicant: GEN INSTRUMENT CORP

Inventor： LIU VINCENT ,  WU SIU-WAI ,  CASTELOES MICHAEL ,  STONE ROBERT J ,  LAM REBECCA

IPC: H04N21/2365 ,  H04N7/26 ,  H04N21/234 ,  H04N21/2662 ,  H04N21/434 ,  H04N21/44

Abstract: A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined (102, 104, 106) for each encoder (112, 114, 116) in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a rate mismatch between the output and the input of a decoder buffer (184). A packet processor (250, 350) checks for impending decoder buffer overflow or underflow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or next frame.

公开(公告)号：DE60131993T2

公开(公告)日：2008-12-11

申请号：DE60131993

申请日：2001-08-31

Applicant: GEN INSTRUMENT CORP

Inventor： LIU VINCENT ,  WU SIU-WAI ,  CASTELOES MICHAEL ,  STONE ROBERT J ,  LAM REBECCA

IPC: H04N7/26 ,  H04N21/234 ,  H04N21/2365 ,  H04N21/434 ,  H04N21/44

Abstract: A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined for each encoder in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a rate mismatch between the output and the input of a decoder buffer. A packet processor checks for impending decoder buffer overflow or underflow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or next frame.

公开(公告)号：AU8859601A

公开(公告)日：2002-04-02

申请号：AU8859601

申请日：2001-08-31

Applicant: GEN INSTRUMENT CORP

Inventor： LIU VINCENT ,  WU SIU-WAI ,  CASTELOES MICHAEL ,  STONE ROBERT J ,  LAM REBECCA

IPC: H04N7/26 ,  H04N21/234 ,  H04N21/2365 ,  H04N21/434 ,  H04N21/44 ,  H04N7/24

Abstract: A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined for each encoder in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a rate mismatch between the output and the input of a decoder buffer. A packet processor checks for impending decoder buffer overflow or underflow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or next frame.

公开(公告)号：CA2422131A1

公开(公告)日：2002-03-28

申请号：CA2422131

申请日：2001-08-31

Applicant: GEN INSTRUMENT CORP

Inventor： LAM REBECCA ,  WU SIU-WAI ,  STONE ROBERT J ,  CASTELOES MICHAEL ,  LIU VINCENT

IPC: H04N7/26 ,  H04N21/234 ,  H04N21/2365 ,  H04N21/434 ,  H04N21/44 ,  H04N7/58 ,  H04N7/24

Abstract: A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined (102, 104, 106) for each encoder (112, 114, 116) in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a ra te mismatch between the output and the input of a decoder buffer (184). A packe t processor (250, 350) checks for impending decoder buffer overflow or underfl ow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or ne xt frame.

公开(公告)号：CA2329093C

公开(公告)日：2011-05-03

申请号：CA2329093

申请日：2000-12-19

Applicant: GEN INSTRUMENT CORP

Inventor： NEMIROFF ROBERT S ,  STONE ROBERT J

IPC: H04N7/26 ,  H04N1/00 ,  H04N5/44 ,  H04N7/30 ,  H04N7/50

Abstract: Still picture images are encoded and transmitted at reduced rates using the MPEG-2 standard. Video frames are captured for processing at a still picture capture rate that is lower than the video input frame rate. The captured frames are compressed as Intra frames at the input frame rate. Selected ones of the compressed frames are inserted in the MPEG-2 transport stream for communication to a decoder at a still picture repetition rate which is no less, in frames per second, than the capture rate.

公开(公告)号：CA2329093A1

公开(公告)日：2001-06-22

申请号：CA2329093

申请日：2000-12-19

Applicant: GEN INSTRUMENT CORP

Inventor： NEMIROFF ROBERT S ,  STONE ROBERT J

IPC: H04N1/00 ,  H04N5/44 ,  H04N7/26 ,  H04N7/30 ,  H04N7/50

Abstract: Still picture images are encoded and transmitted at reduced rates using the MPEG-2 standard. Video frames are captured for processing at a still picture capture rate that is lower than the video input frame rate. The captured frames are compressed as Intra frames at the input frame rate. Selected ones of the compressed frames are inserted in the MPEG-2 transport stream for communication to a decoder at a still picture repetition rate which is no less, in frames per second, than the capture rate.

公开(公告)号：DE60131993D1

公开(公告)日：2008-01-31

申请号：DE60131993

申请日：2001-08-31

Applicant: GEN INSTRUMENT CORP

Inventor： LIU VINCENT ,  WU SIU-WAI ,  CASTELOES MICHAEL ,  STONE ROBERT J ,  LAM REBECCA

IPC: H04N7/26 ,  H04N21/234 ,  H04N21/2365 ,  H04N21/434 ,  H04N21/44

Abstract: A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined for each encoder in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a rate mismatch between the output and the input of a decoder buffer. A packet processor checks for impending decoder buffer overflow or underflow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or next frame.

公开(公告)号：CA2490927A1

公开(公告)日：2005-07-22

申请号：CA2490927

申请日：2004-12-23

Applicant: GEN INSTRUMENT CORP

Inventor： SANDERS JOHN ,  CHEN ANNIE O ,  STONE ROBERT J ,  JOST ARTHUR P

IPC: H04L9/32 ,  H04N7/167 ,  H04N7/16

Abstract: A method and apparatus for providing access protection in a digital television distribution system (100) having a master headend (102) and at least one local headend (104) is described. In one example, first authorization da ta associated with content services for distribution is defined. The content services are protected at the master headend (102). The first authorization data is protected at the master headend (102). Digital transport stream data is then generated from the protected content services and the protected authorizatio n data for transmission to each of the local headends (104).