发明名称 |
Radio frequency modem and method |
摘要 |
A radio frequency modulator/demodulator (modem) and method for receiving and transmitting data over a radio frequency data link. The modem has a transmitting section which includes a modulator which modulates a radio frequency signal in response to data provided by, for example, an associated processor. The transmitting section further includes a watchdog or enable circuit which monitors a request-to-send signal produced by the associated processor, with the request-to-send signal being present when the processor is generating data to be transmitted over the data link. The enable circuit will disable the modulator should a transmission exceed a maximum predetermined time period, thereby preventing the associated processor from monopolizing the data link in the event of a processor failure.
|
申请公布号 |
US4794620(A) |
申请公布日期 |
1988.12.27 |
申请号 |
US19840628460 |
申请日期 |
1984.07.06 |
申请人 |
INTERNATIONAL ANASAZI, INC. |
发明人 |
MOORE, JOHN R.;COUPLAND, RICHARD P. |
分类号 |
H04L5/00;H04L27/02;(IPC1-7):H04B1/04;H04B3/50 |
主分类号 |
H04L5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|