发明名称 |
CIRCUIT AND METHOD FOR PROVIDING AN AUTO-OFF CAPABILITY FOR A WIRELESS TRANSMITTER |
摘要 |
A circuit and method for providing an auto-off capability for a wireless transmitter, of a type having an audio plug which mates with the output jack of an audio source. The portable transmitter modulates signals from a baseband signal source onto a carrier and transmits the RF carrier to a receiver. The auto-off capability is provided to prolong battery life and eliminate the transmission of unmodulated RF carriers. The auto-off capability comprises turning power off to the transmitter circuit when baseband input signal is absent for more than a predetermined amount of time, and immediately turning on the transmitter circuit when baseband signal is present.
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申请公布号 |
US2008214122(A1) |
申请公布日期 |
2008.09.04 |
申请号 |
US20070680936 |
申请日期 |
2007.03.01 |
申请人 |
GLISSMAN JOHN;COHEN ARTHUR L |
发明人 |
GLISSMAN JOHN;COHEN ARTHUR L. |
分类号 |
H04B7/00 |
主分类号 |
H04B7/00 |
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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