Quasi-analog channel indicator for radio receivers
US4227254A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1977 |
| Grant date | Oct 7, 1980 |
| Priority date | — |
| Expiry date | Jun 30, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J1/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio receiver receives a transmitted high-frequency signal which is mixed within the receiver with a local-oscillator-frequency signal to form an intermediate-frequency signal, which in turn is converted into an audio-frequency signal. A plurality of indicator elements are arranged in a row to form a quasi-analog channel indicator, each indicator element of which is associated with a respective one of the selectable channels. A multi-channel oscillator furnishes the requisite local-oscillator-frequency signals for tuning-in the available channels and furthermore controls the operation of the indicator elements of the quasi-analog channel indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.