发明授权
US5594510A Method for tuning the channel of broadcasting waves and identifying
channel plan by applying memorized frequency data
失效
通过应用存储的频率数据来调整广播波的频道和识别频道计划的方法
- 专利标题: Method for tuning the channel of broadcasting waves and identifying channel plan by applying memorized frequency data
- 专利标题(中): 通过应用存储的频率数据来调整广播波的频道和识别频道计划的方法
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申请号: US533480申请日: 1995-09-25
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公开(公告)号: US5594510A公开(公告)日: 1997-01-14
- 发明人: Shigeto Sakakibara
- 申请人: Shigeto Sakakibara
- 申请人地址: JPX Osaka
- 专利权人: Funai Electric Co., Ltd.
- 当前专利权人: Funai Electric Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX7-024797 19950119
- 主分类号: H03J1/00
- IPC分类号: H03J1/00 ; H03J5/02 ; H04N5/44 ; H04N5/50
摘要:
This invention is to provide a method for tuning the channel of a broadcasting wave which is able automatically to secure specified band zone and to shorten the time required for tuning. Namely, this method is characterized by starting the PLL tuning by applying the data of the center frequency of either the first channel plan memorized in advance in tuning the channel of broadcasting wave or the second channel plan differing from the allocation of frequencies for said first channel plan, and by judging whether said broadcasting station belongs to either the first channel plan or the second channel plan by applying the tuned frequency at the time that said tuning is finished, and further by renewing said memorized data of the center frequency according to said judged result.
公开/授权文献
- US4532639A CFAR receiver apparatus for detecting a signal in noise 公开/授权日:1985-07-30
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