-
公开(公告)号：JP2000032454A
公开(公告)日：2000-01-28
申请号：JP17847799
申请日：1999-06-24
Applicant: GEN INSTRUMENT CORP
Inventor： PAIK WOO H , KRAUSE EDWARD A , LIU VINCENT , SHEN PAUL , DEROVANESSIAN HENRY
IPC: H04N1/41 , G06T9/00 , H04N7/08 , H04N7/081 , H04N7/58 , H04N19/00 , H04N21/2365 , H04N21/434 , H04N7/24
Abstract: PROBLEM TO BE SOLVED: To provide a multiplex channel image compression system that compresses image data by using plural coders. SOLUTION: A coding level command is given to respective coders for designating quality level. Coded image data generated by the coders, in response to the coding level command, are multiplexed for transmission by a multiplexer 26 and become decoded signals. The coding level command is used to adjust the quality level so as to maintain stored data within the range of a processing capability of a communication channel 48, in response to the storage amount of data consisting of the decoded signal. The coding level command can designates an identical general-purpose coding level to all the coders, but each coder derives a local coding level from the general-purpose coding level and is able to provide different coding qualities. Decoders 30-46 are installed to decode the image from compressed image data.
-
公开(公告)号：DE69232623D1
公开(公告)日：2002-07-04
申请号：DE69232623
申请日：1992-10-31
Applicant: GEN INSTRUMENT CORP
Inventor： SHEN PAUL , PAIK WOO H , KRAUSE EDWARD A
Abstract: A multiple serial access memory is provided. A dynamic random access memory (30) is addressed to input data thereto and output data therefrom. Rows of data are output from the array (50) in response to address signals (34, 36, 38) provided thereto. A plurality of serial output ports (44, 46, 48) is coupled to the output of the array for selectively latching different rows of data output from the array. The serial output ports (44, 46, 48) are clocked to output the latched data therefrom. In an illustrated embodiment, each of the serial output ports contains a shift register (62, 64, 66, ... 68) having a length equal to the width of the memory array (30). The shift register is responsive to a first timing signal (42, 52) for latching a row of data from the array (30). A second timing signal actuates the shift register to shift a row of latched data. A serial access selector (70) coupled to the shift register outputs a selected portion of the shifted data from the serial output port. The memory has particular application as the frame store for a motion compensated interframe image coding/decoding system.
-
公开(公告)号：DE69228715T2
公开(公告)日：1999-09-23
申请号：DE69228715
申请日：1992-01-29
Applicant: GEN INSTRUMENT CORP
Inventor： SHEN PAUL , KRAUSE EDWARD A , PAIK WOO H
IPC: H03M7/30 , G06T9/00 , H04N7/60 , H04N11/04 , H04N19/00 , H04N21/236 , H04N21/434 , H04N7/26 , H04N7/46 , H04N7/50
Abstract: Digital video signals are processed by a plurality of independently operating processors (42, 44, 46, 48) to provide data for transmission in a compressed, motion compensated form. A video image frame area (10) is divided into a set of subframes (12, 16, 20, 24). The set of subframes is systematically shifted such that the individual subframes progressively cycle across and wrap around the video image frame area. For each successive video frame, video image data bounded by each of the different subframes is independently compressed using motion estimation to reduce data redundancy among the successive frames. The motion estimation is limited for each subframe of a current video frame to areas of a previous video frame that were bounded by the same subframe in the previous frame. In an illustrated embodiment, the set of subframes (12, 16, 20, 24) is shifted once for each successive video frame, and each subframe includes a refresh region (14, 18, 22, 26) whereby the video image frame area (10) is progressively refreshed as the subframes are shifted thereacross. Receiver apparatus (60-82) for use in decoding the independently processed subframe data is also disclosed.
-
公开(公告)号：HK1013758A1
公开(公告)日：1999-09-03
申请号：HK98115012
申请日：1998-12-23
Applicant: GEN INSTRUMENT CORP
Inventor： PAIK WOO H , KRAUSE EDWARD A , LIU VINCENT , SHEN PAUL , DEROVANESSIAN HENRY
IPC: H04N1/41 , G06T9/00 , H04N7/08 , H04N7/081 , H04N7/58 , H04N19/00 , H04N21/2365 , H04N21/434 , H04N
Abstract: A multichannel image compression system uses a plurality of encoders (10, 12 ... 14) to compress image data. A coding level command is provided to each of the encoders to specify a level of quality to be provided by each encoder. Encoded image data, provided by the encoders in response to the coding level command, is multiplexed (26) into a combined signal for transmission. The coding level command is adjusted in response to an accumulated amount of data from the combined signal, to maintain the accumulated data within a throughput capability of a communication channel (48). Although the coding level command may specify a global coding level that is the same for all of the encoders, the encoders can derive local coding levels from the global coding level to provide different encoding qualities. Decoder apparatus (30-46) is provided to recover an image from the compressed image data.
-
公开(公告)号：AT183354T
公开(公告)日：1999-08-15
申请号：AT92121030
申请日：1992-12-10
Applicant: GEN INSTRUMENT CORP
Inventor： PAIK WOO H , KRAUSE EDWARD A , LIU VINCENT , SHEN PAUL , DEROVANESSIAN HENRY
IPC: H04N1/41 , G06T9/00 , H04N7/08 , H04N7/081 , H04N7/58 , H04N19/00 , H04N21/2365 , H04N21/434 , H04N7/32 , H04N7/24
Abstract: A multichannel image compression system uses a plurality of encoders (10, 12 ... 14) to compress image data. A coding level command is provided to each of the encoders to specify a level of quality to be provided by each encoder. Encoded image data, provided by the encoders in response to the coding level command, is multiplexed (26) into a combined signal for transmission. The coding level command is adjusted in response to an accumulated amount of data from the combined signal, to maintain the accumulated data within a throughput capability of a communication channel (48). Although the coding level command may specify a global coding level that is the same for all of the encoders, the encoders can derive local coding levels from the global coding level to provide different encoding qualities. Decoder apparatus (30-46) is provided to recover an image from the compressed image data.
-
Patent Agency Ranking
公开(公告)号：NO302990B1
公开(公告)日：1998-05-11
申请号：NO925106
申请日：1992-02-10
Applicant: GEN INSTRUMENT CORP
Inventor： SHEN PAUL , KRAUSE EDWARD A , PAIK WOO H
IPC: H03M7/30 , G06T9/00 , H04N7/60 , H04N11/04 , H04N19/00 , H04N21/236 , H04N21/434 , H04N7/32
Abstract: Digital video signals are processed by a plurality of independently operating processors (42, 44, 46, 48) to provide data for transmission in a compressed, motion compensated form. A video image frame area (10) is divided into a set of subframes (12, 16, 20, 24). The set of subframes is systematically shifted such that the individual subframes progressively cycle across and wrap around the video image frame area. For each successive video frame, video image data bounded by each of the different subframes is independently compressed using motion estimation to reduce data redundancy among the successive frames. The motion estimation is limited for each subframe of a current video frame to areas of a previous video frame that were bounded by the same subframe in the previous frame. In an illustrated embodiment, the set of subframes (12, 16, 20, 24) is shifted once for each successive video frame, and each subframe includes a refresh region (14, 18, 22, 26) whereby the video image frame area (10) is progressively refreshed as the subframes are shifted thereacross. Receiver apparatus (60-82) for use in decoding the independently processed subframe data is also disclosed.
-
公开(公告)号：NO914318A
公开(公告)日：1992-05-18
申请号：NO914318
申请日：1991-11-04
Applicant: GEN INSTRUMENT CORP
Inventor： KRAUSE EDWARD , PAIK WOO H , LIU VINCENT C , HELLER JERROLD A , SHEN PAUL , ESSERMAN JAMES NEIL
CPC classification number: H04N19/55 , H04N19/107 , H04N19/51 , H04N19/61
-
公开(公告)号：CA2053392A1
公开(公告)日：1992-05-17
申请号：CA2053392
申请日：1991-10-11
Applicant: GEN INSTRUMENT CORP
Inventor： KRAUSE EDWARD , PAIK WOO H , LIU VINCENT C , HELLER JERROLD A , SHEN PAUL , ESSERMAN JAMES N
Abstract: An image area is refreshed during the transmission of a set of motion compensated sequential video images. The video images are divided into a plurality of adjacent regions. The image area is refreshed during a refresh cycle by communicating a different region in each successive video image of the set without motion compensation. Motion compensation of the previously refreshed regions of the image area during the refresh cycle is restricted to an area containing only the previously refreshed regions. Video image data from a current region being refreshed is encoded for use by a decoder in identifying it as non-motion compensated data.
-
公开(公告)号：DE69227821T2
公开(公告)日：1999-06-17
申请号：DE69227821
申请日：1992-10-31
Applicant: GEN INSTRUMENT CORP
Inventor： SHEN PAUL , PAIK WOO H , KRAUSE EDWARD A
IPC: H03M7/00 , G06T1/60 , G11C7/10 , H04N5/907 , H04N7/26 , H04N7/32 , H04N7/36 , H04N7/50 , G11C7/00
Abstract: A multiple serial access memory is provided. A dynamic random access memory (30) is addressed to input data thereto and output data therefrom. Rows of data are output from the array (50) in response to address signals (34, 36, 38) provided thereto. A plurality of serial output ports (44, 46, 48) is coupled to the output of the array for selectively latching different rows of data output from the array. The serial output ports (44, 46, 48) are clocked to output the latched data therefrom. In an illustrated embodiment, each of the serial output ports contains a shift register (62, 64, 66, ... 68) having a length equal to the width of the memory array (30). The shift register is responsive to a first timing signal (42, 52) for latching a row of data from the array (30). A second timing signal actuates the shift register to shift a row of latched data. A serial access selector (70) coupled to the shift register outputs a selected portion of the shifted data from the serial output port. The memory has particular application as the frame store for a motion compensated interframe image coding/decoding system.
-
公开(公告)号：DE69228715D1
公开(公告)日：1999-04-29
申请号：DE69228715
申请日：1992-01-29
Applicant: GEN INSTRUMENT CORP
Inventor： SHEN PAUL , KRAUSE EDWARD A , PAIK WOO H
IPC: H03M7/30 , G06T9/00 , H04N7/60 , H04N11/04 , H04N19/00 , H04N21/236 , H04N21/434 , H04N7/26 , H04N7/46 , H04N7/50
Abstract: Digital video signals are processed by a plurality of independently operating processors (42, 44, 46, 48) to provide data for transmission in a compressed, motion compensated form. A video image frame area (10) is divided into a set of subframes (12, 16, 20, 24). The set of subframes is systematically shifted such that the individual subframes progressively cycle across and wrap around the video image frame area. For each successive video frame, video image data bounded by each of the different subframes is independently compressed using motion estimation to reduce data redundancy among the successive frames. The motion estimation is limited for each subframe of a current video frame to areas of a previous video frame that were bounded by the same subframe in the previous frame. In an illustrated embodiment, the set of subframes (12, 16, 20, 24) is shifted once for each successive video frame, and each subframe includes a refresh region (14, 18, 22, 26) whereby the video image frame area (10) is progressively refreshed as the subframes are shifted thereacross. Receiver apparatus (60-82) for use in decoding the independently processed subframe data is also disclosed.
-
-
-
-
-
-
-
-
-
Search Results
55
records
(took 0.021 seconds)
