Cellular telephone apparatus
US4965820A · kind A · utility
9Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1988 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Nov 1, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.