发明名称 |
DIGITAL SCAN CONVERTER |
摘要 |
DIGITAL SCAN CONVERTOR A digital scan converter having an oscillator providing a clock signal used to scan-convert an input video signal to thereby produce a scan-converted output video signal, an automatic frequency control for controlling the oscillator in synchronism with a synchronizing signal separated from the input video signal and a counter for frequency-dividing the clock signal from the oscillator to thereby form a control signal used for controlling blanking of the input video signal. The counter also provides an address signal for a memory in which the video signal is temporarily stored during the scan converting operation. Since a composite blanking pulse for the input video signal is formed in synchronism with the address signal for the memory, it is possible to prevent appearance of a jitter of the composite blanking pulse on a display screen. |
申请公布号 |
CA1240388(A) |
申请公布日期 |
1988.08.09 |
申请号 |
CA19850497054 |
申请日期 |
1985.12.06 |
申请人 |
SONY CORPORATION |
发明人 |
KITA, HIROYUKI;TOKUHARA, MASAHARU;KAWASHIMA, HIROYUKI |
分类号 |
H04N11/20;H04N5/12;H04N5/44;H04N7/01;(IPC1-7):H04N11/20 |
主分类号 |
H04N11/20 |
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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