发明授权
US4451848A Television receiver including a circuit for doubling line scanning
frequency
失效
电视接收机包括一个用于加倍行扫描频率的电路
- 专利标题： Television receiver including a circuit for doubling line scanning frequency
- 专利标题（中）： 电视接收机包括一个用于加倍行扫描频率的电路
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申请号： US330944申请日： 1981-12-15
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公开(公告)号： US4451848A公开(公告)日： 1984-05-29
- 发明人: Takashi Okada , Yutaka Tanaka
- 申请人： Takashi Okada , Yutaka Tanaka
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX55-189300 19801226
- 主分类号： H04N3/28
- IPC分类号： H04N3/28 ; H04N3/00 ; H04N5/14 ; H04N7/01 ; H04N7/025 ; H04N3/27 ; H04N5/02
摘要：
A television receiver according to the present invention includes a circuit for doubling line scanning frequency, receives character information signals of frame rate, and in which scanning lines of even fields coincide with those of odd fields. The television receiver is so designed that the scanning of the lines of the odd fields are substantially delayed by H/2 (H; normal horizontal scanning period). Therefore, an excellent picture image can be obtained without flickering and degradation in resolution.
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