发明名称 |
Waveform analyzer for separating an eight field sequence of a PAL video signal |
摘要 |
An input signal is inputted to an A/D converter through an amplifier and is converted into a digital input signal. A vertical synchronizing pulse and a horizontal synchronizing pulse are taken out of the output signal of the amplifier by means of a TV synchronizing separator and inputted to a trigger gate and selector circuit. A delay timer and a timing control circuit are operated by a selected synchronizing pulse, and the data applied with A/D conversion are stored in a memory in accordance with a set delay time and sampling synchronization. The stored data are read by means of a CPU circuit. The state of a burst signal is decided by the CPU circuit, and separation of eight fields is performed by combining that state with a set state of the TV synchronizing separator.
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申请公布号 |
US5539472(A) |
申请公布日期 |
1996.07.23 |
申请号 |
US19940302186 |
申请日期 |
1994.09.08 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
AOKI, JUN |
分类号 |
H04N11/16;H04N9/465;H04N9/79;H04N17/02;(IPC1-7):H04N9/455 |
主分类号 |
H04N11/16 |
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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