发明授权
- 专利标题: Receiver for audio enhancement and method therefor
- 专利标题(中): 音频增强接收机及其方法
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申请号: US09995084申请日: 2001-11-27
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公开(公告)号: US06741844B2公开(公告)日: 2004-05-25
- 发明人: Joseph J. Medvid , Dang N. Vu , Branko Avanic
- 申请人: Joseph J. Medvid , Dang N. Vu , Branko Avanic
- 主分类号: H04Q720
- IPC分类号: H04Q720
摘要:
A receiver (10) includes an antenna (12), a preselector (14), an amplifier (16), a mixer (18), a filter (20), a signal strength measurement circuit (22), a radio frequency signal detector (26), and a processor (24). The processor (24) is programmed to receive a signal indicator level (42) from the signal strength measurement circuit (22), generate an automatic gain control command (44) based on the received signal indicator level (42), and send the automatic gain control command (44) to the amplifier (16) to control a gain of the amplifier (16). The processor (24) is programmed to receive an off channel signal strength (48) from the radio frequency signal detector (26), compare the off channel signal strength (48) to one or more threshold levels, generate a filter command (46), and send the filter command (46) to the filter (20). The filter command (46) identifies a cutoff frequency for the filter (20).
公开/授权文献
- US20030100279A1 Receiver for audio enhancement and method therefor 公开/授权日:2003-05-29
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