发明名称 |
HORIZONTAL PHASE LOCK LOOP FOR TELEVISION |
摘要 |
A horizontal phase lock loop for use in a TV receiver comprises two loops and a horizontal oscillator which generates a ramp signal at a frequency of twice the line frequency. The first loop looks the oscillator signal to the horizontal synchronization pulses. The oscillator output is sliced and then divided by two to achieve a fifty percent duty cycle drive waveform to the phase detecter in the first loop and to a phase detector in the second loop. The second loop includes a variable slicer which operates on the oscillator ramp signal so as to lock the flyback signal generated by the horizontal output stage to the second phase detector's switching waveform.
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申请公布号 |
KR880002424(B1) |
申请公布日期 |
1988.11.08 |
申请号 |
KR19810005224 |
申请日期 |
1981.12.29 |
申请人 |
MOTOROLA INC. |
发明人 |
MCGINN MICHAEL;LUNN GERALD K. |
分类号 |
H04N5/12;(IPC1-7):H04N5/04 |
主分类号 |
H04N5/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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