公开(公告)号：US20110150094A1

公开(公告)日：2011-06-23

申请号：US12645676

申请日：2009-12-23

Applicant: Limin Wang

Inventor： Limin Wang

IPC: H04N7/26

CPC classification number: H04N19/194 ,  H04N19/115 ,  H04N19/124 ,  H04N19/15 ,  H04N19/172 ,  H04N19/177 ,  H04N19/61

Abstract: Rate control is provided in a two-pass encoder. A first encoding pass is performed to encode an input video sequence. Coding statistics for the first encoding pass are collected. Target coding parameters for a second encoding pass are calculated based on the coding statistics for the first encoding pass. The second encoding pass is performed to encode the input video sequence at a constant bit rate (CBR) using the target coding parameters to form a second pass encoded stream.

Abstract translation: 速率控制在双路编码器中提供。 执行第一编码遍以对输入视频序列进行编码。 收集第一个编码通行码的编码统计信息。 基于第一编码遍的编码统计来计算第二编码遍的目标编码参数。 执行第二编码遍以使用目标编码参数以恒定比特率（CBR）对输入视频序列进行编码以形成第二遍编码流。

公开(公告)号：US07839931B2

公开(公告)日：2010-11-23

申请号：US11558207

申请日：2006-11-09

Applicant: Limin Wang ,  Krit Panusopone ,  Rajeev Gandhi ,  Yue Yu ,  Ajay Luthra

Inventor： Limin Wang ,  Krit Panusopone ,  Rajeev Gandhi ,  Yue Yu ,  Ajay Luthra

IPC: H04N7/12

CPC classification number: H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/573 ,  H04N19/577

Abstract: A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each picture in said stream of pictures in either frame mode or in field mode.

Abstract translation: 数字视频内容的编码和解码方法和系统。 数字视频内容包括可以是帧内，预测或双预测图像的图像流。 每个图像包括可以进一步分割成较小块的宏块。 该方法需要在帧模式或场模式下对所述图像流中的每个图像进行编码和解码。

公开(公告)号：US20100080295A1

公开(公告)日：2010-04-01

申请号：US12238538

申请日：2008-09-26

Applicant: Krit Panusopone ,  Limin Wang ,  Yinqing Zhao

Inventor： Krit Panusopone ,  Limin Wang ,  Yinqing Zhao

IPC: H04N11/02 ,  H04B1/66

CPC classification number: H04N19/51 ,  H04N19/533 ,  H04N19/57 ,  H04N19/61

Abstract: Embodiments of the invention generally provide a method and apparatus for scalable motion estimation. One embodiment of a method for performing motion estimation includes setting a target complexity for a macroblock of a source frame and performing motion estimation for one or more partitions of the macroblock until the target complexity is met.

Abstract translation: 本发明的实施例通常提供用于可伸缩运动估计的方法和装置。 用于执行运动估计的方法的一个实施例包括设置源帧的宏块的目标复杂度，并对宏块的一个或多个分区执行运动估计，直到满足目标复杂度。

公开(公告)号：US20090161757A1

公开(公告)日：2009-06-25

申请号：US11962914

申请日：2007-12-21

Applicant: Yue Yu ,  Limin Wang

Inventor： Yue Yu ,  Limin Wang

IPC: H04N7/26

CPC classification number: H04N19/107 ,  H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/197 ,  H04N19/61

Abstract: A method and apparatus for processing an input image are disclosed. For example, the method receives a block of pixels from the input image, and selects a coding mode for the block of pixels based on at least one coding mode of at least one neighbor block of the block of pixels. The method determines whether the coding mode will result in all zero coefficients for the block of pixels, and selects the coding mode for the block of pixels if the coding mode will result in all zero coefficients for the block of pixels.

Abstract translation: 公开了一种处理输入图像的方法和装置。 例如，该方法从输入图像接收像素块，并且基于像素块的至少一个相邻块的至少一个编码模式来选择用于像素块的编码模式。 该方法确定编码模式是否将导致像素块的全零系数，并且如果编码模式将导致像素块的所有零系数，则选择像素块的编码模式。

公开(公告)号：US20090154555A1

公开(公告)日：2009-06-18

申请号：US11957750

申请日：2007-12-17

Applicant: Limin Wang ,  Jian Zhou

Inventor： Limin Wang ,  Jian Zhou

IPC: H04N7/40

CPC classification number: H04N19/103 ,  H04N19/112 ,  H04N19/137 ,  H04N19/14 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/51

Abstract: A method and apparatus for selecting a coding mode are described. For example, the method receives at least one block of a signal to be encoded. The method determines a frame vertical pixel difference in the at least one block and determines a field vertical pixel difference in the at least one block. The method then compares the frame vertical pixel difference with the field vertical pixel difference to determine a first coding mode for the at least one block.

Abstract translation: 描述用于选择编码模式的方法和装置。 例如，该方法接收要编码的信号的至少一个块。 该方法确定至少一个块中的帧垂直像素差，并确定至少一个块中的场垂直像素差。 该方法然后将帧垂直像素差与场垂直像素差进行比较，以确定至少一个块的第一编码模式。

公开(公告)号：US20090129472A1

公开(公告)日：2009-05-21

申请号：US11940761

申请日：2007-11-15

Applicant: Krit Panusopone ,  Chanchal Chatterjee ,  Robert O. Eifrig ,  Ajay K. Luthra ,  Limin Wang

Inventor： Krit Panusopone ,  Chanchal Chatterjee ,  Robert O. Eifrig ,  Ajay K. Luthra ,  Limin Wang

IPC: H04N7/26

CPC classification number: H04N19/137 ,  H04N19/105 ,  H04N19/139 ,  H04N19/157 ,  H04N19/176 ,  H04N19/19 ,  H04N19/196 ,  H04N19/197 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/53 ,  H04N19/533 ,  H04N19/56 ,  H04N19/567 ,  H04N19/57

Abstract: The present invention discloses a system and method for performing motion estimation associated with an encoder, e.g., a H.264/MPEG-4 AVC compliant encoder. For example, the method selects a motion vector centering for a current block in a search area of at least one reference picture. The method calculates a matching cost for each of a plurality of candidate motion vectors derived from the search area, and outputs at least one of the plurality of candidate motion vectors based on the matching cost associated with each of the plurality of candidate motion vectors to a main coding loop.

Abstract translation: 本发明公开了一种用于执行与诸如H.264 / MPEG-4AVC兼容编码器的编码器相关联的运动估计的系统和方法。 例如，该方法在至少一个参考图像的搜索区域中选择针对当前块的运动矢量居中。 该方法计算从搜索区域导出的多个候选运动矢量中的每一个的匹配成本，并且基于与多个候选运动矢量中的每一个相关联的匹配成本将多个候选运动矢量中的至少一个输出到 主编码循环。

公开(公告)号：US07423409B1

公开(公告)日：2008-09-09

申请号：US11701808

申请日：2007-02-02

Applicant: Charles E. Burns ,  David P. Garner ,  Limin Wang ,  Gary R. Ware

Inventor： Charles E. Burns ,  David P. Garner ,  Limin Wang ,  Gary R. Ware

IPC: H01M10/46

CPC classification number: H01M10/46 ,  H01M10/48

Abstract: A battery monitor for use with a battery includes an input configured to receive a voltage from the battery, an analog to digital converter (ADC) coupled to the input and configured to convert analog voltages received through the input into digital indications of levels of the analog voltage, and a processor coupled to the ADC to receive the digital indications of the levels of the analog voltage of the battery and configured to manipulate the received digital indications to reduce inaccuracies introduced by the ADC in the received digital indications of the levels of the analog voltage relative to actual levels of the analog voltage during discharge of the battery, the processor being further configured to provide an output indicative of a determined level of the analog voltage.

Abstract translation: 与电池一起使用的电池监视器包括被配置为从电池接收电压的输入端，耦合到输入端并被配置为将通过输入接收的模拟电压转换为模拟电平的数字指示的模数转换器（ADC） 电压和处理器，其耦合到ADC以接收电池的模拟电压的电平的数字指示并且被配置为操纵所接收的数字指示，以减少ADC在接收到的模拟电平的数字指示中引入的不准确性 在电池放电期间相对于模拟电压的实际电平的电压，处理器还被配置为提供指示所确定的模拟电压电平的输出。

公开(公告)号：US20080084928A1

公开(公告)日：2008-04-10

申请号：US11539786

申请日：2006-10-09

Applicant: Limin Wang ,  Jian Zhou

Inventor： Limin Wang ,  Jian Zhou

IPC: H04N11/04 ,  H04N7/12

CPC classification number: H04N19/174 ,  H04N19/124 ,  H04N19/14 ,  H04N19/146 ,  H04N19/172 ,  H04N19/177

Abstract: A method and apparatus for providing multi-panel rate control of real-time video digital encoders such as an MPEG or H series including the steps of bit allocation, rate control and adaptive quantization. Bit allocation assigns a target number of bits per group of pictures, and per picture of each type. Rate control adjusts the quantization parameter at the MB level to achieve that target number of bits per picture. Adaptive quantization further modulates the parameter per MB using local activity measure. Bit allocation and rate control can be implemented through a central control unit, or a central digital signal processor (DSP) while adaptive quantization can be implemented at the local panel.

Abstract translation: 一种用于提供诸如MPEG或H系列的实时视频数字编码器的多面板速率控制的方法和装置，包括比特分配，速率控制和自适应量化的步骤。 位分配分配每组图像的目标位数，以及每种类型的每张图像。 速率控制调整MB级别的量化参数，以实现每个图像的目标位数。 自适应量化使用局部活动度量进一步调整每MB的参数。 位分配和速率控制可以通过中央控制单元或中央数字信号处理器（DSP）来实现，而自适应量化可以在本地面板上实现。

公开(公告)号：US07310376B2

公开(公告)日：2007-12-18

申请号：US11026394

申请日：2004-12-30

Applicant: Limin Wang ,  Rajeev Gandhi ,  Krit Panusopone ,  Ajay Luthra

Inventor： Limin Wang ,  Rajeev Gandhi ,  Krit Panusopone ,  Ajay Luthra

IPC: H04B1/66

CPC classification number: H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/573

Abstract: A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each of the smaller blocks in each picture in said stream of pictures in either frame mode or in field mode.

公开(公告)号：US20060146928A1

公开(公告)日：2006-07-06

申请号：US11026406

申请日：2004-12-30

Applicant: Limin Wang ,  Xue Fang

Inventor： Limin Wang ,  Xue Fang

IPC: H04N11/04 ,  H04B1/66 ,  H04N7/12 ,  H04N11/02

CPC classification number: H04N19/174 ,  H04N19/115 ,  H04N19/126 ,  H04N19/14 ,  H04N19/149 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61

Abstract: The present invention discloses a system and method for providing a rate control to an encoder, e.g., a H.264/MPEG-4 AVC compliant encoder. Specifically, the rate control method computes a target rate for a segment, where the segment comprises at least one slice of macroblocks. In turn, a target rate is computed for the at least one slice of macroblocks from the target rate for the segment. In turn, a quantization parameter (QPj) is computed for a macroblock (j) of the macroblocks from the target rate for the at least one slice. Finally, the macroblock (j) is encoded in accordance with said quantization parameter (QPj).

Abstract translation: 本发明公开了一种向编码器提供速率控制的系统和方法，例如符合H.264 / MPEG-4AVC的编码器。 具体地，速率控制方法计算段的目标速率，其中段包括至少一个宏块块。 反过来，根据该段的目标速率为至少一个宏块片段计算目标速率。 接着，针对至少一个切片的目标速率，针对宏块的宏块（j）计算量化参数（QP N j）。 最后，宏块（j）根据所述量化参数（QP＆lt; j＆gt;）编码。