发明授权
- 专利标题： Frequency offset cancellation circuit for data determination in FM wireless communications
- 专利标题（中）： 用于FM无线通信中数据确定的频偏补偿电路
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申请号： US10200339申请日： 2002-07-23
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公开(公告)号： US07136433B2公开(公告)日： 2006-11-14
- 发明人: Takao Kobayashi , Masaaki Shida , Kazuhiko Kawai
- 申请人： Takao Kobayashi , Masaaki Shida , Kazuhiko Kawai
- 申请人地址： JP Tokyo JP Ibaraki
- 专利权人： Renesas Technology Corp.,Hitachi Engineering Co., Ltd.
- 当前专利权人： Renesas Technology Corp.,Hitachi Engineering Co., Ltd.
- 当前专利权人地址： JP Tokyo JP Ibaraki
- 代理机构： Reed Smith LLP
- 代理商 Stanley P. Fisher, Esq.; Juan Carlos A. Marquez, Esq.
- 优先权： JP2001-257943 20010828
- 主分类号： H04L22/14
- IPC分类号： H04L22/14 ; H04L27/06 ; H03D1/00
摘要：
A demodulating semiconductor integrated circuit device used in a wireless communication system of an FM-modulation scheme, wherein a circuit for canceling a frequency offset is made of a digital circuit, so as to make a high-accuracy decision as to received data and prevent error frequency offset cancel due to a pseudo pattern contained in the received data. Consequently, a high-accuracy received data decision is carried out.