Telephone equipment for reduced key operations
US4736410A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 27, 1985 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Sep 27, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/2747
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A microprocessor-based telephone set includes a telephone number memory, a number indicator, an abbreviated number scanning switch and associated control circuit, in addition to a push-button dial and a hook switch as equipped in the usual telephone set. Telephone numbers are preset in correspondence to abbreviated numbers, so that a telephone number is dialed automatically by simply specifying a corresponding abbreviated number using the scanning switch and indicator. By provision of an FM transceiver within the handset and a separate relay unit for establishing radio communication with the base telephone station, a mobile telephone system is configured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.