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1. 发明申请

WO2014066434A3 IMPROVED ALGORITHMS FOR DETERMINING BITRATE FOR A STATISTICAL MULTIPLEXING SYSTEM TO ACCOUNT FOR SIGNAL COMPLEXITY INCLUDING FILM MODE AND GOP STRUCTURAL CHANGES 审中-公开
标题翻译：用于确定用于统计复合系统的双向数据的改进的算法用于信号复杂性，包括电影模式和GOP结构变化
公开(公告)号：WO2014066434A3
公开(公告)日：2014-07-10
申请号：PCT/US2013066250
申请日：2013-10-22
申请人： GEN INSTRUMENT CORP
发明人： VAN VELDHUISEN BRENDA L , CHEN JING YANG , NEMIROFF ROBERT S
IPC分类号： H04N21/2365
CPC分类号： H04N19/146 , H04N21/23655
摘要： A statistical multiplexer (statmux) system for encoding multiple channels of digital television data is provided with improved algorithms for determining bitrate for encoding and decoding to account for signal complexity, including accounting for film mode and GOP structural changes. In film mode when the lower frame per second rate for film mode is identified, rather than faster rate SD or HD modes, instead of determining bit rate from viewing the next picture in the look ahead buffer (LAB), the system looks at a start time stamp for specific data in the LAB. Accounting for GOP structural changes includes identifying the number of pictures (N) between I type pictures in data provided to an encoder and the number of pictures (M) between P type pictures, rather than using a fixed number for N and M.
摘要翻译：提供了一种用于对多个数字电视数据进行编码的统计多路复用器（statmux）系统，用于确定编码和解码的比特率以解决信号复杂度的改进算法，包括计算胶片模式和GOP结构变化。在电影模式下，当识别电影模式的每秒低帧速率时，而不是更快速率的SD或HD模式，而不是确定在前瞻缓冲区（LAB）中查看下一个图像的比特率，系统会看起来 LAB中具体数据的时间戳。考虑GOP结构变化包括识别提供给编码器的数据中的I型图像之间的图像数（N）和P型图像之间的图像数（M），而不是使用固定数量的N和M.

2. 发明专利

CA2321015A1 METHOD AND APPARATUS FOR DETERMINING A BIT RATE NEED PARAMETER IN A STATISTICAL MULTIPLEXER 未知
公开(公告)号：CA2321015A1
公开(公告)日：2002-03-27
申请号：CA2321015
申请日：2000-09-27
申请人： GEN INSTRUMENT CORP
发明人： CHEN JING YANG , WU SIU-WAI , NEMIROFF ROBERT S , CASTELOES MICHAEL , LIU VINCENT , LAM REBECCA , ON HANSON
IPC分类号： H04J3/16 , H04N7/58 , H04N19/61 , H04N21/2365 , H04N21/434 , H04N7/08 , H04N7/015
摘要： 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 by scaling the complexities of previous pictures of the same and different picture types. Scaling factors based on an activity level, motion estimation score, and number of pictures of a certain type in a GOP, may be used. Moreover, the scaling factors may be bounded based on a linear or non-linear operator to prevent large variations in the factors. An encoding bit rate is allocated to each channel based on its need parameter.

3. 发明专利

CA2534979A1 METHODS AND APPARATUS TO IMPROVE THE RATE CONTROL DURING SPLICE TRANSITIONS 未知
公开(公告)号：CA2534979A1
公开(公告)日：2005-03-17
申请号：CA2534979
申请日：2004-09-07
申请人： GEN INSTRUMENT CORP
发明人： NEMIROFF ROBERT S , WU SIU-WAI , CHEN JING YANG
IPC分类号： H04N7/24 , H04N9/74
摘要： The present invention provides improvements of the rate control method durin g the transitions at the splice point. In one embodiment, black frames and/or mute audio frames are inserted at the splice point.

4. 发明专利

CA2456252C MOTION-ADAPTIVE NOISE REDUCTION PRE-PROCESSING FOR DIGITAL VIDEO SIGNAL 未知
公开(公告)号：CA2456252C
公开(公告)日：2012-11-27
申请号：CA2456252
申请日：2002-08-07
申请人： GEN INSTRUMENT CORP
发明人： WU SIU-WAI , CHEN JING YANG
IPC分类号： H04N19/85 , G06T5/00 , H04N19/51
摘要： Noise is reduced in a video system by applying motion compensated temporal filtering using previously generated motion vectors and adaptive spatial filtering at scene change frames. In addition to improvements made to FIR spatial filtering, the present invention improves on previous filtering techniques by using Infinite Impulse Response (IIR) temporal filtering to reduce noise while maintaining edge definition. It also uses motion vectors previously calculated as part of the first-pass image encoding or alternatively by trans coding to reduce computational complexity for P-frame and B-frame image preprocessing. Single stage P-frame temporal noise filtering and double stage B-frame temporal noise filtering are presented.

5. 发明专利

AU2002356069A1 Motion-adaptive noise reduction pre-processing for digital video signal 未知
公开(公告)号：AU2002356069A1
公开(公告)日：2003-03-03
申请号：AU2002356069
申请日：2002-08-07
申请人： GEN INSTRUMENT CORP
发明人： CHEN JING YANG , WU SIU-WAI
IPC分类号： H04N19/85 , G06T5/00 , H04N19/51 , H04N7/26 , H04N7/36 , H04N7/50
摘要： Noise is reduced in a video system by applying motion compensated temporal filtering using previously generated motion vectors and adaptive spatial filtering at scene change frames. Various types of noise can be introduced into video prior to compression and transmission. Artifacts arise from recording and signal manipulation, terrestrial or orbital communications, or during decoding. Noise introduced prior to image compression interferes with performance and subsequently impairs system performance. While filtering generally reduces noise in a video image, it can also reduce edge definition leading to loss of focus. Filtering can also tax system throughput, since increased computational complexity often results from filtering schemes. Furthermore, the movement of objects within frames, as defined by groups of pixels, complicates the noise reduction process by adding additional complexity. In addition to improvements made to FIR spatial filtering, the present invention improves on previous filtering techniques by using Infinite Impulse Response (IIR) temporal filtering to reduce noise while maintaining edge definition. It also uses motion vectors previously calculated as part of the first-pass image encoding or alternatively by trans coding to reduce computational complexity for P-frame and B-frame image preprocessing. Single stage P-frame temporal noise filtering and double stage B-frame temporal noise filtering are presented.

6. 发明专利

CA2456252A1 MOTION-ADAPTIVE NOISE REDUCTION PRE-PROCESSING FOR DIGITAL VIDEO SIGNAL 未知
公开(公告)号：CA2456252A1
公开(公告)日：2003-02-27
申请号：CA2456252
申请日：2002-08-07
申请人： GEN INSTRUMENT CORP
发明人： CHEN JING YANG , WU SIU-WAI
IPC分类号： H04N19/85 , G06T5/00 , H04N19/51 , H04N7/26 , H04N7/36 , H04N7/50
摘要： Noise is reduced in a video system by applying motion compensated temporal filtering using previously generated motion vectors and adaptive spatial filtering at scene change frames. In addition to improvements made to FIR spatial filtering, the present invention improves on previous filtering techniques by using Infinite Impulse Response (IIR) temporal filtering to reduce noise while maintaining edge definition. It also uses motion vectors previously calculated as part of the first-pass image encoding or alternatively by trans coding to reduce computational complexity for P-frame and B-frame image preprocessing. Single stage P-frame temporal noise filteri ng and double stage B-frame temporal noise filtering are presented.

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