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1. 发明授权

US07447231B2 DS3 to ASI converter with reduced memory 有权
标题翻译： DS3到ASI转换器，内存减少
公开(公告)号：US07447231B2
公开(公告)日：2008-11-04
申请号：US11030034
申请日：2005-01-06
申请人： Robert S. Nemiroff , Michael A. Casteloes , Ken-Ho Chang
发明人： Robert S. Nemiroff , Michael A. Casteloes , Ken-Ho Chang
IPC分类号： H04J3/16
CPC分类号： H04N21/4307 , H04J3/0632 , H04J3/1635 , H04N21/23608 , H04N21/4305 , H04N21/4344
摘要： Converting a DS3 transport stream to MPEG-2 packets over an ASI transport stream includes extracting MPEG-2 packets along with PCR values, calculating a new PCR value to compensate for packet time shift, and replacing the extracted PCR value with the new PCR value prior to outputting MPEG-2 packets. An apparatus for processing a DS3 transport stream carrying an MPEG-2 payload includes a DS3 receiver to receive the stream and to output a data signal and clock signal. The DS3 receiver includes a DS3 interface to receive DS3 packets and discard null packets, and includes PCR correction to determine if received DS3 packets include PCR values and to adjust PCR values prior to outputting the MPEG-2 packet. Packets are output without storing each packet in a buffer, but storing the PCR value in the buffer.
摘要翻译：通过ASI传输流将DS3传输流转换为MPEG-2分组包括提取MPEG-2分组以及PCR值，计算新的PCR值以补偿分组时间偏移，并用先前的新PCR值替换提取的PCR值输出MPEG-2数据包。用于处理携带MPEG-2有效载荷的DS3传输流的装置包括用于接收流并输出数据信号和时钟信号的DS3接收机。 DS3接收机包括一个DS3接口，用于接收DS3数据包并丢弃零分组，并包括PCR校正，以确定接收的DS3数据包是否包括PCR值，并在输出MPEG-2数据包之前调整PCR值。输出数据包，而不将每个数据包存储在缓冲区中，但将PCR值存储在缓冲区中。

2. 发明授权

US08510107B2 Audio data bit rate detector 有权
标题翻译：音频数据比特率检测器
公开(公告)号：US08510107B2
公开(公告)日：2013-08-13
申请号：US12620762
申请日：2009-11-18
申请人： Robert S. Nemiroff , Jing Yang Chen , Siu-Wai Wu
发明人： Robert S. Nemiroff , Jing Yang Chen , Siu-Wai Wu
IPC分类号： G10L21/04
CPC分类号： G10L19/24 , G10L19/167 , H04N21/4341 , H04N21/4394
摘要： A detector for determining an audio data bit rate of a pre-compressed audio elementary stream (AES), in which the pre-compressed AES includes a plurality of preamble length fields is provided. The detector includes an analyzer module configured to determine one or more candidate audio data bit rates of the AES from the plurality of preamble length fields, a detector module configured to determine whether one or more of the candidate audio data bit rates are correct, and a selector module configured to select one of the one or more candidate audio data bit rates determined to be correct as the audio data bit rate of the pre-compressed AES.
摘要翻译：一种用于确定预压缩音频基本流（AES）的音频数据比特率的检测器，其中预压缩AES包括多个前同步码长度字段。检测器包括：分析器模块，被配置为从多个前导码长度字段确定AES的一个或多个候选音频数据比特率;检测器模块，被配置为确定候选音频数据比特率中的一个或多个是否正确;以及选择器模块，被配置为选择被确定为正确的一个或多个候选音频数据比特率中的一个作为预压缩AES的音频数据比特率。

3. 发明申请

US20080137726A1 Method and Apparatus for Real-Time Video Encoding 审中-公开
标题翻译：用于实时视频编码的方法和装置
公开(公告)号：US20080137726A1
公开(公告)日：2008-06-12
申请号：US11609572
申请日：2006-12-12
申请人： Chanchal Chatterjee , Robert O. Eifrig , Robert S. Nemiroff
发明人： Chanchal Chatterjee , Robert O. Eifrig , Robert S. Nemiroff
IPC分类号： H04N11/04
CPC分类号： H04N19/436 , H04N19/61
摘要： A real-time encoder, e.g., a real-time H.264 compliant encoder or a real-time AVC compliant encoder is disclosed. For example, the encoder comprises a first digital signal processor (DSP) for processing a first panel of an input image and a second digital signal processor (DSP) for processing a second panel of the input image. Finally, the encoder comprises a field programmable gate array (FPGA) for supporting both the first DSP and the second DSP.
摘要翻译：公开了实时编码器，例如实时H.264兼容编码器或符合实时AVC的编码器。例如，编码器包括用于处理输入图像的第一面板的第一数字信号处理器（DSP）和用于处理输入图像的第二面板的第二数字信号处理器（DSP）。最后，编码器包括用于支持第一DSP和第二DSP的现场可编程门阵列（FPGA）。

4. 发明授权

US06847656B1 Statistical remultiplexing with bandwidth allocation among different transcoding channels 有权
标题翻译：在不同代码转换通道之间进行带宽分配的统计重新复用
公开(公告)号：US06847656B1
公开(公告)日：2005-01-25
申请号：US09669517
申请日：2000-09-25
申请人： Siu-Wai Wu , Robert S. Nemiroff , Vincent Liu , Ajay Luthra
发明人： Siu-Wai Wu , Robert S. Nemiroff , Vincent Liu , Ajay Luthra
IPC分类号： H04N7/26 , H04N7/50 , H04N21/236 , H04N21/2365 , H04B1/66
CPC分类号： H04N21/23608 , H04N19/115 , H04N19/126 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/40 , H04N19/61 , H04N21/23655
摘要： An efficient statistical remultiplexer for processing a number of channels that include video data. In one aspect, transcoding of the video data is delayed while statistical information is obtained from the data. Bit rate need parameters for the data are determined based on the statistical information, and the video data is transcoded based on the respective bit rate need parameters following the delay. In another aspect, a transcoding bit rate for video frames is updated a plurality of times at successive intervals to allow a closer monitoring of the bit rate. Minimum and maximum bounds for the transcoding bit rate, e.g., for buffer overflow and underflow protection, are also updated in each interval. In another aspect, the pre-transcoding quantization scales of the macroblocks in a frame are scaled to provide corresponding new quantization scales for transcoding based on a ratio of a pre-transcoding amount of data in the frame and a target, post-transcoding amount of data for the frame. The quantization scales are adjusted for different portions of the frame as transcoding progresses to ensure that a minimum amount of transcoding bandwidth is allocated to each macroblock.
摘要翻译：一种用于处理包括视频数据的多个信道的有效统计再分集器。在一个方面，视频数据的代码转换被延迟，同时从数据中获得统计信息。基于统计信息确定数据的比特率需要参数，并且根据延迟后的各个比特率需求参数对视频数据进行代码转换。在另一方面，视频帧的代码转换比特率以连续的间隔多次更新，以允许更仔细地监视比特率。代码转换比特率的最小和最大限制，例如用于缓冲区溢出和下溢保护，也在每个间隔中被更新。在另一方面，对帧中的宏块进行预先转码的量化尺度进行缩放，以提供相应的新的用于代码转换的量化尺度，其基于帧中的数据的预转码量与目标之间的比率，后转码量帧的数据。当代码转换进行时，针对帧的不同部分调整量化尺度，以确保将最小量的代码转换带宽分配给每个宏块。

5. 发明授权

US08472529B2 Estimating complexity of video frames for encoding 有权
标题翻译：估算视频帧的编码复杂度
公开(公告)号：US08472529B2
公开(公告)日：2013-06-25
申请号：US11959198
申请日：2007-12-18
申请人： Yong He , Robert S. Nemiroff
发明人： Yong He , Robert S. Nemiroff
IPC分类号： H04N7/12
CPC分类号： H04N19/16 , H04N19/107 , H04N19/115 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/172 , H04N19/176 , H04N19/61
摘要： Complexity for a video frame after a special event is estimated and used for encoding the frame. The complexity for a key frame of a special event is estimated based on its intra activity and a complexity of a previously encoded key frame in the video stream prior to the special event. The complexity for a dependent frame after a special event is estimated based on a motion estimation cost for the dependent frame and a complexity of a previously encoded dependent frame prior to the special event.
摘要翻译：在特殊事件之后的视频帧的复杂性被估计并用于对帧进行编码。基于特殊事件之前的视频流中先前编码的关键帧的内部活动和复杂度来估计特殊事件的关键帧的复杂度。基于特定事件之后的依赖帧的运动估计成本和特殊事件之前的先前编码的相关帧的复杂度来估计特殊事件之后的依赖帧的复杂度。

6. 发明申请

US20110119064A1 AUDIO DATA BIT RATE DETECTOR 有权
标题翻译：音频数据速率检测器
公开(公告)号：US20110119064A1
公开(公告)日：2011-05-19
申请号：US12620762
申请日：2009-11-18
申请人： Robert S. Nemiroff , Jing Yang Chen , Siu-Wai Wu
发明人： Robert S. Nemiroff , Jing Yang Chen , Siu-Wai Wu
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L19/167 , H04N21/4341 , H04N21/4394
摘要： A detector for determining an audio data bit rate of a pre-compressed audio elementary stream (AES), in which the pre-compressed AES includes a plurality of preamble length fields is provided. The detector includes an analyzer module configured to determine one or more candidate audio data bit rates of the AES from the plurality of preamble length fields, a detector module configured to determine whether one or more of the candidate audio data bit rates are correct, and a selector module configured to select one of the one or more candidate audio data bit rates determined to be correct as the audio data bit rate of the pre-compressed AES.
摘要翻译：一种用于确定预压缩音频基本流（AES）的音频数据比特率的检测器，其中预压缩AES包括多个前同步码长度字段。检测器包括：分析器模块，被配置为从多个前导码长度字段确定AES的一个或多个候选音频数据比特率;检测器模块，被配置为确定候选音频数据比特率中的一个或多个是否正确;以及选择器模块，被配置为选择被确定为正确的一个或多个候选音频数据比特率中的一个作为预压缩AES的音频数据比特率。

7. 发明授权

US07733919B2 Method and apparatus for processing transport stream packets to compensate for jitter 有权
标题翻译：用于处理传输流分组以补偿抖动的方法和装置
公开(公告)号：US07733919B2
公开(公告)日：2010-06-08
申请号：US10889502
申请日：2004-07-12
申请人： Vincent C. Liu , Robert S. Nemiroff , Guofei Wu
发明人： Vincent C. Liu , Robert S. Nemiroff , Guofei Wu
IPC分类号： H04J3/06 , H04N7/16
CPC分类号： H04N21/8547
摘要： Method and apparatus for processing transport stream packets received from a network for distribution to user terminals is described. In one embodiment, a pair of clock reference packets in the transport stream packets is identified. The pair of clock reference packets includes a first clock reference packet having an output time stamp and a second clock reference packet. A difference between a time value of the second clock reference packet and a time value of the first clock reference packet is computed. An output time stamp for the second clock reference packet is calculated in response to the output time stamp of the first clock reference packet and the difference.
摘要翻译：描述用于处理从网络接收的用于分发给用户终端的传输流分组的方法和装置。在一个实施例中，识别传输流分组中的一对时钟参考分组。一对时钟参考分组包括具有输出时间戳和第二时钟参考分组的第一时钟参考分组。计算第二时钟参考分组的时间值与第一时钟参考分组的时间值之间的差异。响应于第一时钟参考分组的输出时间戳和差值来计算第二时钟参考分组的输出时间戳。

8. 发明授权

US07725202B2 Audio splice process for digital Ad insertion 有权
标题翻译：用于数字广告插入的音频拼接过程
公开(公告)号：US07725202B2
公开(公告)日：2010-05-25
申请号：US10744271
申请日：2003-12-23
申请人： Jingyang Chen , Robert S. Nemiroff
发明人： Jingyang Chen , Robert S. Nemiroff
IPC分类号： G06F17/00 , H04N9/74
CPC分类号： H04N21/2335 , H04N21/23424 , H04N21/44016 , H04N21/8106 , H04N21/812
摘要： A system and method for audio splicing (insertion) of an Ad audio stream in the compressed domain, where variable early delivery of the Ad audio stream and variable bit rate are allowed, without creating audio distortion, glitches, or other digital artefacts or errors, in the resultant audio stream is disclosed. The present system and method provides for a splice delay buffer which delays the first five Ad audio frames until transmission of the last frame of the primary audio stream, but before the splice time. Subsequent Ad audio frames are delayed by a fixed amount, where the fixed amount is greater than the frame delay of the primary audio stream, to allow for ease of splice back to the primary audio stream.
摘要翻译：用于音频拼接（插入）压缩域中的Ad音频流的系统和方法，其中允许可变的早期传送Ad音频流和可变比特率，而不产生音频失真，毛刺或其他数字伪像或错误，在所得到的音频流中被公开。本系统和方法提供了一种拼接延迟缓冲器，其将前五个Ad音频帧延迟，直到主音频流的最后一帧传输，但在拼接时间之前。随后的广告音频帧被延迟固定量，其中固定量大于主音频流的帧延迟，以允许容易地将主音频流连接起来。

9. 发明授权

US07675970B2 Method and apparatus for processing a bitstream in a digital video transcoder 有权
标题翻译：用于处理数字视频代码转换器中的位流的方法和装置
公开(公告)号：US07675970B2
公开(公告)日：2010-03-09
申请号：US10755429
申请日：2004-01-12
申请人： Robert S. Nemiroff , Siu-Wai Wu
发明人： Robert S. Nemiroff , Siu-Wai Wu
IPC分类号： H04N7/26 , H04N7/12
CPC分类号： H04N19/198 , H04N19/115 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/15 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/40 , H04N19/48 , H04N19/61
摘要： A method and apparatus for processing a bitstream in a digital video transcoder is described. In one example, an adjustment factor is determined that relates a number of bits representing a selected frame defined by the bitstream to a target number of bits for the selected frame. An average spatial activity value among sets of video data is associated with the selected frame. A spatial activity value for a selected set of the sets of video data is determined. A normalized spatial, activity value for the selected set of frequency video data is then computed in response to the average spatial activity value, the spatial activity value, and a function of the adjustment factor. Target bit reduction for each of the sets of video data may be computed using a function of the normalized spatial activity value and the adjustment factor.
摘要翻译：描述了一种在数字视频代码转换器中处理位流的方法和装置。在一个示例中，确定将表示由比特流定义的所选帧的比特数的数目与所选择的帧的目标比特数相关联的调整因子。视频数据组中的平均空间活动值与所选择的帧相关联。确定所选择的一组视频数据的空间活动值。然后响应于平均空间活动值，空间活动值和调整因子的函数来计算所选择的频率视频数据集合的归一化空间活动值。可以使用归一化空间活动值和调整因子的函数来计算每组视频数据的目标比特缩减。

10. 发明申请

US20090074080A1 Estimating Complexity of Video Frames for Encoding 有权
标题翻译：估计视频帧的复杂度进行编码
公开(公告)号：US20090074080A1
公开(公告)日：2009-03-19
申请号：US11959198
申请日：2007-12-18
申请人： Yong He , Robert S. Nemiroff
发明人： Yong He , Robert S. Nemiroff
IPC分类号： H04N11/02
CPC分类号： H04N19/16 , H04N19/107 , H04N19/115 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/172 , H04N19/176 , H04N19/61
摘要： Complexity for a video frame after a special event is estimated and used for encoding the frame. The complexity for a key frame of a special event is estimated based on its intra activity and a complexity of a previously encoded key frame in the video stream prior to the special event. The complexity for a dependent frame after a special event is estimated based on a motion estimation cost for the dependent frame and a complexity of a previously encoded dependent frame prior to the special event.
摘要翻译：在特殊事件之后的视频帧的复杂性被估计并用于对帧进行编码。基于特殊事件之前的视频流中先前编码的关键帧的内部活动和复杂度来估计特殊事件的关键帧的复杂度。基于特定事件之后的依赖帧的运动估计成本和特殊事件之前的先前编码的相关帧的复杂度来估计特殊事件之后的依赖帧的复杂度。

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