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1. 发明授权

US4607283A Vertical picture centering circuit 失效
标题翻译：垂直图像中心电路
公开(公告)号：US4607283A
公开(公告)日：1986-08-19
申请号：US593341
申请日：1984-03-26
申请人： Gopal K. Srivastava , Julian E. Warrick
发明人： Gopal K. Srivastava , Julian E. Warrick
IPC分类号： H04N3/227 , H04N5/04
CPC分类号： H04N3/227
摘要： The present invention discloses a device and method for compensating for the time lag associated with circuitry within the television receiver when recognizing vertical sync. Accordingly, one aspect of the present invention introduces a static phase correction into the vertical drive sequence for a standard signal so that the television picture is more nearly vertically centered on the screen. Additional aspects of the invention provide for compatibility with other circuits in the television receiver. Specifically, a delay generator coordinates with the phase correcter and other phase and frequency monitoring circuits so that the receiver is not needlessly triggered into nonstandard operation.
摘要翻译：本发明公开了一种用于在识别垂直同步时补偿与电视接收机内的电路相关的时滞的装置和方法。因此，本发明的一个方面在标准信号的垂直驱动序列中引入静态相位校正，使得电视图像在屏幕上更靠近中心。本发明的另外的方面提供了与电视接收机中的其他电路的兼容性。具体来说，延迟发生器与相位校正器和其它相位和频率监视电路协调，使接收器不必要地被触发成非标准操作。

2. 发明授权

US4641189A Digital vertical sync filter 失效
标题翻译：数字垂直同步滤波器
公开(公告)号：US4641189A
公开(公告)日：1987-02-03
申请号：US540740
申请日：1983-10-11
申请人： Julian E. Warrick
发明人： Julian E. Warrick
IPC分类号： H04N5/10
CPC分类号： H04N5/10
摘要： The filter first looks in the composite sync signal for a pulse enduring at least 6 microseconds. In response to such a detection, it reconfigures to look for pulses which endure at least 12 microseconds and illustratively requires two 12-microsecond pulses in 4 horizontal lines of time which comprise a window which opens after the 6 microsecond detection. This window provides good noise immunity. If these conditions are met, it emits a drive signal for a counted duration and then reconfigures to prepare for the next field.
摘要翻译：滤波器首先在复合同步信号中寻找持续至少6微秒的脉冲。响应于这种检测，其重新配置以寻找持续至少12微秒的脉冲，并且示例性地需要在4个水平线上的两个12微秒脉冲，其包括在6微秒检测之后打开的窗口。该窗口提供良好的抗噪声能力。如果满足这些条件，它将发出一个持续时间的驱动信号，然后重新配置以准备下一个字段。

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