发明名称 |
Digital signal processing and receiving apparatus and method |
摘要 |
A DSP tuner, which is equipped with an A/D converter and a digital signal processing part, is provided to the receiving parts of an in-vehicle equipment and a portable equipment that constitute an in-vehicle equipment remote control system. The A/D converter quantizes analog input signals received by receiving antennas and converts them into digital values. The digital signal processing part always appears, and removes as a noise a frequency band of which spectrum hardly change within a predetermined time period. Moreover, the digital signal processing part sets a frequency band with a comparatively large spectrum change as an FSK modulation signal corresponding to code contents, and outputs binary data corresponding to the frequency band as a code signal.
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申请公布号 |
US7729449(B2) |
申请公布日期 |
2010.06.01 |
申请号 |
US20040023694 |
申请日期 |
2004.12.29 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;AISIN SEIKI KABUSHIKI KAISHA |
发明人 |
OKADA HIROKI;MURAKAMI YUICHI |
分类号 |
H03M1/12;H04B1/69;B60R25/00;G07C9/00;H04B1/10;H04L27/14 |
主分类号 |
H03M1/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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