发明名称 |
TELEVISION RECEIVER |
摘要 |
PURPOSE:To display an excellent picture with inconspicuous scanning lines by inverting the phase of a demodulating oscillation signal of a frequency 2n times as high as a subcarrier frequency by 180 deg. each in two horizontal periods when demodulating a color signal included in a read signal. CONSTITUTION:The time axis of a received video signal is compressed to a half by time-axis compressing circuit 5. Then, a horizontal synchronizing signal obtained by separating the video signal by synchronous separating circuit 9 is multiplied to a double frequency by multiplying circuit 11 to give effect to the high-speed horizontal deflection of cathode-ray tube 7. Therefore, a picture of high quality with inconspicuous scanning lines can be projected. |
申请公布号 |
JPS55132187(A) |
申请公布日期 |
1980.10.14 |
申请号 |
JP19790040010 |
申请日期 |
1979.04.02 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
YASUMOTO YOSHIO;YAMAGUCHI NAKAO |
分类号 |
H04N11/20;H04N9/12;H04N9/45;H04N9/64;(IPC1-7):04N9/12 |
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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