Combined electronic calculator and electronically tuning radio receiver
US4306294A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1979 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Sep 14, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new and effective combination is disclosed wherein both a calculator and an electronically tuning radio receiver are governed by common control circuitry and a microprocessor implements the major portion of the calculator and also implements or governs the electronically tuning radio receiver and a digital timekeeper. For example, it is possible for the operator to listen to a radio program of a desired frequency and continue operating the calculator whenever he likes, while the calculator is in use. If the radio receiver is provided with a time switch function, then it is possible to obtain on-time information and immediately execute calculations on the one-time information obtained, thus enhanceing maneuverability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.