FM radio receiver and signal processing device used therein
US5960328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1996 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Mar 26, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H2201/15
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Superimposed FM data is demodulated to digital data. A synchronism reproducing circuit (data block detecting section) detects the front of blocks in the digital data to generate a block head signal (a station change timing signal), which is supplied to a control section of a station selecting microcomputer. When a station selecting key requests a change of the received station, station data corresponding to a requested station is supplied to the control section (a station selecting control section). When the block head signal is inputted after requesting the change of the station, the control section begins to output station change data to a PLL frequency synthesizer in order to change the frequency signal in a front end. This prevents a latter part of a block in received superimposed FM data from being NG data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.