发明授权
US6005885A Methodology for discontinuous radio reception utilizing embedded frame
length words
失效
使用嵌入式帧长度字的不连续无线电接收方法
- 专利标题: Methodology for discontinuous radio reception utilizing embedded frame length words
- 专利标题(中): 使用嵌入式帧长度字的不连续无线电接收方法
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申请号: US570982申请日: 1995-12-12
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公开(公告)号: US6005885A公开(公告)日: 1999-12-21
- 发明人: Bruce G. Warren , Alan F. Jovanovich , John W. Mensonides
- 申请人: Bruce G. Warren , Alan F. Jovanovich , John W. Mensonides
- 申请人地址: CA Woodland Hills
- 专利权人: Intermec IP Corp.
- 当前专利权人: Intermec IP Corp.
- 当前专利权人地址: CA Woodland Hills
- 主分类号: H04B1/707
- IPC分类号: H04B1/707
摘要:
A radio receiver for direct sequence spread spectrum radio frequency (RF) signals is provided which discontinues radio reception when it is recognized that a received signal is intended for another such receiver. As a result, the receiving apparatus draws substantially less electrical current than conventional spread spectrum receivers. The apparatus provides for demodulation of an RF signal to recover digital information in the form of a transmitted message packet having a header portion and a data portion. The apparatus determines a message address and data length from the header portion. If the determined address does not correspond to the distinct apparatus address of the particular receiver, the apparatus disables the signal demodulation operation for a discrete period of time corresponding to the determined data length.
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