发明名称 |
AURAL ANNUNCIATOR CIRCUIT FOR A RECEIVER |
摘要 |
An aural annunciator circuit for a radio receiver and a radio transceiver incorporating such. The annunciator circuit is operative to generate an aural signal when a signal is transmitted to the receiver in a manner analogous to telephonic ringer circuitry of conventional telephonic apparatus (606). The aural signal is of a signal level of a relatively high magnitude when the receiver in which the aural annunciator circuit is embodied is configured in a closed configuration and the aural signal is of a relatively low magnitude when the receiver is configured in an open configuration (618). |
申请公布号 |
WO9413065(A1) |
申请公布日期 |
1994.06.09 |
申请号 |
WO1993US10448 |
申请日期 |
1993.10.29 |
申请人 |
MOTOROLA INC. |
发明人 |
DEMURO, DAVID, M.;TRANDAI, TONY, A.;ALBERTH, WILLIAM, P., JR. |
分类号 |
H04M1/00;H04M1/725;H04M11/02;H04M19/04;H04Q7/32;H04Q7/38;(IPC1-7):H04B1/16 |
主分类号 |
H04M1/00 |
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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