发明授权
US3935387A Pulse generator for television for generating at least one pulse series
having pulses of different duration and repetition period
失效
用于产生具有不同持续时间和重复周期的脉冲的至少一个脉冲序列的用于电视的脉冲发生器
- 专利标题： Pulse generator for television for generating at least one pulse series having pulses of different duration and repetition period
- 专利标题（中）： 用于产生具有不同持续时间和重复周期的脉冲的至少一个脉冲序列的用于电视的脉冲发生器
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申请号： US319984申请日： 1973-01-02
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公开(公告)号： US3935387A公开(公告)日： 1976-01-27
- 发明人: Eugenius Martinus Kaptein
- 申请人： Eugenius Martinus Kaptein
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corporation
- 当前专利权人： U.S. Philips Corporation
- 当前专利权人地址： NY New York
- 优先权： NL7003669 19700314; NL7007169 19700516; NL7014894 19701010
- 主分类号： H03K3/78
- IPC分类号： H03K3/78 ; H04N5/067 ; H04N9/45 ; H04L5/06
摘要：
A TV pulse generator for generating television synchronizing and blanking signals and a chrominance subcarrier gating signal. The switchable generator is formed with a clock pulse generator having a frequency which, for the CCIR and the RTMA standards, is 80 times the line frequency. In addition to auxiliary pulses of field frequency, circuits of frequency dividers formed with JK flip-flops and pulse generators also generate auxiliary pulses of line frequency and of double the line frequency. The edges in the synchronizing and blanking signals and in the PAL or NTSC chrominance subcarrier gating signal generated by signal generators are accurately determined by trigger signals derived from the clock pulses.
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