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    • 1. 发明申请
    • SELF-CALIBRATING TIMING CIRCUITS FOR USE IN A SYNC SEPARATOR
    • 用于同步分离器的自校准时序电路
    • US20080278625A1
    • 2008-11-13
    • US12176893
    • 2008-07-21
    • Zhinan (Peter) WeiRobert David Zucker
    • Zhinan (Peter) WeiRobert David Zucker
    • H04N5/04
    • H04N5/08H04N5/46H04N9/641
    • Provided herein are self-calibrating timing circuits and methods for use in a sync separator. A comparator compares a video signal to a video reference voltage to produce a sliced sync signal that has a frequency that is equal to a scan frequency of a horizontal sync embedded in the video signal. A first converter converts the sliced sync signal to a control signal having an amplitude or magnitude that is inversely proportional to the scan period of the horizontal sync embedded the video signal. A second converter converts the voltage control signal to a timer signal that has timed intervals that are that are inversely proportional to the amplitude or magnitude of the control signal, and thus proportional to the scan period of the horizontal sync embedded in the video signal. These timed intervals produced in accordance with embodiments of the present invention are easily and precisely scalable, allowing them to be used to discriminate various timing features embedded in video signals. This abstract is not intended to be a complete description of, or limit the scope of, the invention.
    • 本文提供了用于同步分离器的自校准定时电路和方法。 比较器将视频信号与视频参考电压进行比较,以产生具有等于嵌入在视频信号中的水平同步的扫描频率的频率的分片同步信号。 第一转换器将切片的同步信号转换成具有与嵌入视频信号的水平同步的扫描周期成反比的幅度或幅度的控制信号。 第二转换器将电压控制信号转换成具有与控制信号的幅度或幅度成反比的定时间隔的定时器信号,并且因此与嵌入在视频信号中的水平同步的扫描周期成比例。 根据本发明的实施例产生的这些定时间隔容易且精确地可扩展,允许它们用于区分嵌入在视频信号中的各种定时特征。 本摘要不是对本发明的完整描述或限制本发明的范围。
    • 2. 发明授权
    • Self-calibrating timing circuits for use in a sync separator
    • 用于同步分离器的自校准定时电路
    • US07633552B2
    • 2009-12-15
    • US12176893
    • 2008-07-21
    • Zhinan (Peter) WeiRobert David Zucker
    • Zhinan (Peter) WeiRobert David Zucker
    • H04N5/08
    • H04N5/08H04N5/46H04N9/641
    • Provided herein are self-calibrating timing circuits and methods for use in a sync separator. A comparator compares a video signal to a video reference voltage to produce a sliced sync signal that has a frequency that is equal to a scan frequency of a horizontal sync embedded in the video signal. A first converter converts the sliced sync signal to a control signal having an amplitude or magnitude that is inversely proportional to the scan period of the horizontal sync embedded the video signal. A second converter converts the voltage control signal to a timer signal that has timed intervals that are that are inversely proportional to the amplitude or magnitude of the control signal, and thus proportional to the scan period of the horizontal sync embedded in the video signal. These timed intervals produced in accordance with embodiments of the present invention are easily and precisely scalable, allowing them to be used to discriminate various timing features embedded in video signals. This abstract is not intended to be a complete description of, or limit the scope of, the invention.
    • 本文提供了用于同步分离器的自校准定时电路和方法。 比较器将视频信号与视频参考电压进行比较,以产生具有等于嵌入在视频信号中的水平同步的扫描频率的频率的分片同步信号。 第一转换器将切片的同步信号转换成具有与嵌入视频信号的水平同步的扫描周期成反比的幅度或幅度的控制信号。 第二转换器将电压控制信号转换成具有与控制信号的幅度或幅度成反比的定时间隔的定时器信号,并且因此与嵌入在视频信号中的水平同步的扫描周期成比例。 根据本发明的实施例产生的这些定时间隔容易且精确地可扩展,允许它们用于区分嵌入在视频信号中的各种定时特征。 本摘要不是对本发明的完整描述或限制本发明的范围。
    • 3. 发明授权
    • Self-calibrating timing circuits for use in a sync separator
    • 用于同步分离器的自校准定时电路
    • US07423694B2
    • 2008-09-09
    • US11201065
    • 2005-08-09
    • Zhinan (Peter) WeiRobert David Zucker
    • Zhinan (Peter) WeiRobert David Zucker
    • H04N5/08
    • H04N5/08H04N5/46H04N9/641
    • Provided herein are self-calibrating timing circuits and methods for use in a sync separator. A comparator compares a video signal to a video reference voltage to produce a sliced sync signal that has a frequency that is equal to a scan frequency of a horizontal sync embedded in the video signal. A frequency-to-voltage converter converts the sliced sync signal to a voltage control signal having an amplitude that is inversely proportional to the scan period of the horizontal sync embedded the video signal. A voltage-to-timed interval converter that converts the voltage control signal to a timer signal that has timed intervals that are that are inversely proportional to the amplitude of the voltage control signal, and thus proportional to the scan period of the horizontal sync embedded in the video signal. These timed intervals produced in accordance with embodiments of the present invention are easily and precisely scalable, allowing them to be used to discriminate various timing features embedded in video signals. This abstract is not intended to be a complete description of, or limit the scope of, the invention.
    • 本文提供了用于同步分离器的自校准定时电路和方法。 比较器将视频信号与视频参考电压进行比较,以产生具有等于嵌入在视频信号中的水平同步的扫描频率的频率的分片同步信号。 频率 - 电压转换器将切片的同步信号转换成具有与嵌入视频信号的水平同步的扫描周期成反比的幅度的电压控制信号。 一种电压 - 定时间隔转换器,其将电压控制信号转换成具有与电压控制信号的幅度成反比的定时间隔的定时器信号,并且因此与嵌入在电平控制信号中的水平同步的扫描周期成正比 视频信号。 根据本发明的实施例产生的这些定时间隔容易且精确地可扩展,允许它们用于区分嵌入在视频信号中的各种定时特征。 本摘要不是对本发明的完整描述或限制本发明的范围。
    • 4. 发明授权
    • Cable equalization locking
    • 电缆均衡锁
    • US08558955B2
    • 2013-10-15
    • US12582659
    • 2009-10-20
    • David W. RitterWarren CraddockRobert David Zucker
    • David W. RitterWarren CraddockRobert David Zucker
    • H04N5/21H04B3/04H04B15/00
    • H04N7/102
    • Provided herein are methods and systems that provide automatic compensation for frequency attenuation of a video signal transmitted over a cable. In accordance with an embodiment, a system includes an equalizer and a compensation controller. The equalizer receives a video signal that was transmitted over a cable, provides compensation for frequency attenuation that occurred during the transmission over the cable, and outputs a compensated video signal. The compensation controller automatically adjusts the compensation provided by the equalizer based on comparisons of one or more portions of the compensated video signal to one or more reference voltage levels. The compensating is selectively locked and reset in response to specific conditions being detected, e.g., a locking condition and a reset condition.
    • 本文提供了对通过电缆传输的视频信号的频率衰减提供自动补偿的方法和系统。 根据实施例,系统包括均衡器和补偿控制器。 均衡器接收通过电缆传输的视频信号,提供在通过电缆传输期间发生的频率衰减的补偿,并输出经补偿的视频信号。 补偿控制器基于将补偿的视频信号的一个或多个部分与一个或多个参考电压电平进行比较,自动调整由均衡器提供的补偿。 响应于检测到的特定条件,例如锁定条件和复位条件,补偿被选择性地锁定和复位。
    • 5. 发明申请
    • CABLE EQUALIZATION LOCKING
    • 电缆均衡锁定
    • US20100110288A1
    • 2010-05-06
    • US12582659
    • 2009-10-20
    • David W. RitterWarren CraddockRobert David Zucker
    • David W. RitterWarren CraddockRobert David Zucker
    • H04N5/04H04N5/00
    • H04N7/102
    • Provided herein are methods and systems that provide automatic compensation for frequency attenuation of a video signal transmitted over a cable. In accordance with an embodiment, a system includes an equalizer and a compensation controller. The equalizer receives a video signal that was transmitted over a cable, provides compensation for frequency attenuation that occurred during the transmission over the cable, and outputs a compensated video signal. The compensation controller automatically adjusts the compensation provided by the equalizer based on comparisons of one or more portions of the compensated video signal to one or more reference voltage levels. The compensating is selectively locked and reset in response to specific conditions being detected, e.g., a locking condition and a reset condition.
    • 本文提供了对通过电缆传输的视频信号的频率衰减提供自动补偿的方法和系统。 根据实施例,系统包括均衡器和补偿控制器。 均衡器接收通过电缆传输的视频信号,提供在通过电缆传输期间发生的频率衰减的补偿,并输出经补偿的视频信号。 补偿控制器基于将补偿的视频信号的一个或多个部分与一个或多个参考电压电平进行比较,自动调整由均衡器提供的补偿。 响应于检测到的特定条件,例如锁定条件和复位条件,补偿被选择性地锁定和复位。