Cellular telephone apparatus

Details Cellular telephone apparatus Cellular telephone apparatus

1988-11-01

1990-10-23

Ng, Jin F.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

H04M 1100

Patent

active

049658204

ABSTRACT:
A cellular telephone apparatus in which several functions such as decoding and encoding data signals, detecting the busy/idle bit and transponding the SAT signal, are carried out by a CMOS data processor (20) which is separate from a CMOS micro-controller (34). The data processor (20) can be operated at a lower clock frequency (1.2 MHz) than the micro-controller (34) which enables current to be saved compared to processing these functions in software using the micro-controller.

REFERENCES:
patent: 4486624 (1984-12-01), Puhl et al.
patent: 4618997 (1986-10-01), Imazeki
patent: 4637022 (1987-01-01), Burke et al.
patent: 4718080 (1988-01-01), Serrano
patent: 4829554 (1989-05-01), Barnes et al.
The Bell System Technical Journal, vol. 58, No. 1, (1/79).

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