专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07227585B1 Luminance and chrominance separation system 有权
标题翻译：亮度和色度分离系统
公开(公告)号：US07227585B1
公开(公告)日：2007-06-05
申请号：US10776075
申请日：2004-02-11
申请人： Peter M. Murdock , John E. Welch
发明人： Peter M. Murdock , John E. Welch
IPC分类号： H04N9/66 , H04N9/78
CPC分类号： H04N9/78
摘要： Provided are decoding methods and decoders for separating luminance and chrominance components of a video signal. In one aspect, a reference subcarrier of a first line of the video signal is used for subsequent lines by applying an appropriate rotation to the reference subcarrier of the first line for each subsequent line. In another aspect, comb filtering is adaptively controlled based on determining whether 90 or 180 degrees relationship is maintained from line to line. In a further aspect, both complimentary and non-complimentary comb filtering are implemented. In yet another aspect, SECAM bell filtering is achieved by rotating the video signal to obtain a baseband signal, low-pass filtering and modulating the baseband signal, and subtracting the modulated low-pass filtered baseband signal from the video signal to notch the chroma component from the luma component.
摘要翻译：提供了用于分离视频信号的亮度和色度分量的解码方法和解码器。在一个方面，视频信号的第一行的参考子载波通过将适当的旋转应用于每个后续行的第一行的参考子载波来用于后续行。另一方面，梳状滤波是基于确定是否沿着线对维持90度或180度的关系来自适应地进行控制。在另一方面，实现了互补和非互补梳状滤波。在另一方面，通过旋转视频信号以获得基带信号，低通滤波和调制基带信号，以及从视频信号中减去经调制的低通滤波基带信号来实现SECAM振铃滤波，以将色度分量从亮度分量。

2. 发明授权

US07750976B2 Automatic video detector 有权
标题翻译：自动视频检测器
公开(公告)号：US07750976B2
公开(公告)日：2010-07-06
申请号：US11323337
申请日：2005-12-30
申请人： Harvard L. Scott , John E. Welch , Peter M. Murdock , Chris J. Delgrande
发明人： Harvard L. Scott , John E. Welch , Peter M. Murdock , Chris J. Delgrande
IPC分类号： H04N5/45
CPC分类号： H04N5/46 , H04N9/642
摘要： An automatic Video Detector (“AVD”) for detecting the transmission format of a received video signal is disclosed. The AVD may include a video detector array module and a state machine. The video detector array module may include a video line detector and a sub-carrier frequency detection module in signal communication with the video line detector.
摘要翻译：公开了一种用于检测接收到的视频信号的传输格式的自动视频检测器（“AVD”）。 AVD可以包括视频检测器阵列模块和状态机。视频检测器阵列模块可以包括与视频线路检测器进行信号通信的视频线路检测器和子载波频率检测模块。

3. 发明授权

US07474357B1 Decoding video signals to separate luma and chroma components 有权
标题翻译：解码视频信号以分离亮度和色度分量
公开(公告)号：US07474357B1
公开(公告)日：2009-01-06
申请号：US11731660
申请日：2007-03-30
申请人： Peter M. Murdock , John E. Welch
发明人： Peter M. Murdock , John E. Welch
IPC分类号： H04N9/78
CPC分类号： H04N9/78
摘要： Provided are decoding methods and decoders for separating luminance and chrominance components of a video signal. In one aspect, a reference subcarrier of a first line of the video signal is used for subsequent lines by applying an appropriate rotation to the reference subcarrier of the first line for each subsequent line. In another aspect, comb filtering is adaptively controlled based on determining whether 90 or 180 degrees relationship is maintained from line to line. In a further aspect, both complimentary and non-complimentary comb filtering are implemented. In yet another aspect, SECAM bell filtering is achieved by rotating the video signal to obtain a baseband signal, low-pass filtering and modulating the baseband signal, and subtracting the modulated low-pass filtered baseband signal from the video signal to notch the chroma component from the luma component.
摘要翻译：提供了用于分离视频信号的亮度和色度分量的解码方法和解码器。在一个方面，视频信号的第一行的参考子载波通过将适当的旋转应用于每个后续行的第一行的参考子载波来用于后续行。另一方面，梳状滤波是基于确定是否沿着线对维持90度或180度的关系来自适应地进行控制。在另一方面，实现了互补和非互补梳状滤波。在另一方面，通过旋转视频信号以获得基带信号，低通滤波和调制基带信号，以及从视频信号中减去经调制的低通滤波基带信号来实现SECAM振铃滤波，以将色度分量从亮度分量。

4. 发明授权

US07167213B1 Comb filter design for separating luminance and chrominance in video signals 有权
标题翻译：梳状滤波器设计用于分离视频信号中的亮度和色度
公开(公告)号：US07167213B1
公开(公告)日：2007-01-23
申请号：US10776121
申请日：2004-02-11
申请人： Peter M. Murdock , John E. Welch
发明人： Peter M. Murdock , John E. Welch
IPC分类号： H04N7/98
CPC分类号： H04N9/78
摘要： Provided are decoding methods and decoders for calculating comb filter error and performing comb filter calculation used for decoding video signals. In one aspect, a method of calculating comb filter error used for decoding a video signal comprises storing a plurality of consecutive video lines of the video signal, the plurality of consecutive video lines including a first video line, a second video line appearing immediately before the first video line, and a third video line appearing immediately before the second video line; receiving a current video line of the video signal, wherein the current video line appears immediately after the first video line; obtaining a first difference between the current video line and the second video line; obtaining a second difference between the first video line and the third video line; and filtering the video signal for separating components in the video signal, based on the differences.
摘要翻译：提供了用于计算梳状滤波器误差的解码方法和解码器，并且用于对视频信号进行解码的梳状滤波器计算。一方面，一种计算用于解码视频信号的梳状滤波器误差的方法包括存储视频信号的多个连续视频行，所述多个连续视频行包括第一视频行，紧接在视频信号之前出现的第二视频行第一视频线和紧接在第二视频线之前出现的第三视频线; 接收视频信号的当前视频行，其中当前视频行紧接在第一视频行之后; 获得当前视频行和第二视频行之间的第一差值; 获得第一视频行和第三视频行之间的第二差; 并根据差异对视频信号进行滤波以分离视频信号中的分量。

5. 发明授权

US07098961B2 Horizontal sync pulse detection for video signal decoding 有权
标题翻译：水平同步脉冲检测用于视频信号解码
公开(公告)号：US07098961B2
公开(公告)日：2006-08-29
申请号：US10746921
申请日：2003-12-23
申请人： Havard L. Scott , Peter M. Murdock , Lior Levin
发明人： Havard L. Scott , Peter M. Murdock , Lior Levin
IPC分类号： H04N5/10 , H04N5/08
CPC分类号： H04N5/10
摘要： Methods and systems are described for determining a slice level used for detecting an edge of a horizontal sync pulse of a horizontal line of a video signal, where the horizontal line has a plurality of samples. An exemplary method comprises low-pass filtering the video signal to generate a plurality of filtered samples; determining a first level, wherein a predetermined number of the plurality of filtered samples have levels above the first level; determining a second level, wherein the second level is a minimum level of levels for the plurality of filtered samples; and determining the slice level by adding the first level and the second level to generate a summed level, and dividing the summed level by two to determine the slice level.
摘要翻译：描述了用于确定用于检测视频信号的水平行的水平同步脉冲的边缘的限幅电平的方法和系统，其中水平线具有多个采样。一种示例性方法包括对视频信号进行低通滤波以产生多个滤波样本; 确定第一电平，其中所述多个滤波样本的预定数量具有高于所述第一电平的电平; 确定第二级别，其中所述第二级别是所述多个经过滤样本的最低级别级别; 以及通过添加所述第一电平和所述第二电平来确定所述限幅电平以产生相加电平，并将所述加和电平除以2以确定所述限幅电平。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式