发明名称 |
Microprocessor controlled radiotelephone transceiver |
摘要 |
An improved radiotelephone includes a unique microprocessor and peripheral devices for controlling the operation of portable or mobile radio transceivers in a cellular-type radiotelephone system. The microprocessor is coupled by a data interface unit and synchronization unit to the radio transceiver for transmitting and receiving Manchester-coded supervisory signalling having a 10 KHz bit rate. The microprocessor is also coupled by a unique self-clocking serial data bus and unique interface adapters to the radio transceiver for controlling the operating frequency, audio signals and transmitted RF signal thereof, to a keyboard for sampling the keys thereof, an off-hook switch and display for displaying telephone numbers, and to serial number and telephone number memories for accessing the stored serial and telephone numbers assigned to the radiotelephone. The microprocessor-controlled radiotelephone can be substantially adapted to operate a system selected from a wide variety of conventional and advanced radiotelephone systems by tailoring the microprocessor control program to meet the selected system specifications.
|
申请公布号 |
US4486624(A) |
申请公布日期 |
1984.12.04 |
申请号 |
US19800187304 |
申请日期 |
1980.09.15 |
申请人 |
MOTOROLA, INC. |
发明人 |
PUHL, LARRY C.;SMEDINGHOFF, JOHN F. |
分类号 |
H04W88/02;(IPC1-7):H04M1/00 |
主分类号 |
H04W88/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|