发明授权
- 专利标题: Tuning display for a television receiver
- 专利标题(中): 调整电视接收机的显示
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申请号: US315617申请日: 1981-10-28
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公开(公告)号: US4390902A公开(公告)日: 1983-06-28
- 发明人: Danny Chin , John G. N. Henderson , Robert J. Maturo
- 申请人: Danny Chin , John G. N. Henderson , Robert J. Maturo
- 申请人地址: NY New York
- 专利权人: RCA Corporation
- 当前专利权人: RCA Corporation
- 当前专利权人地址: NY New York
- 主分类号: H04N5/50
- IPC分类号: H04N5/50
摘要:
A television (TV) receiver which receives TV signals in a plurality of TV frequency bands includes apparatus for developing an accentuated and uncontaminated on-screen tuning indication. Specifically, a blanking device is responsive to a tuning signal for eliminating the display of a portion of the TV picture for the duration of a pulse signal. The pulse signal is delayed in time relative to a deflection signal by a time related to the tuning signal so that a blanked bar is generated in the TV picture. A tuning indicator device causes a predetermined display unaffected by the TV picture during the blanked portion of the TV picture.
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