Integrated short range RDS FM transmitter
US7916872B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2003 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Oct 7, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A low-power, software based modulator that is used to transfer text data from an auxiliary audio device to an FM radio receiver includes a processor that receives the text data to be transmitted to the FM receiver, processes the data as an RDS signal or converts the text data to speech and then combines the processed data signal with an FM audio signal that is sent to the FM receiver. In one embodiment, the auxiliary audio device is a CD or CD-MP3 player and the software-based modulator is implemented on the control processor or DSP of the device. The FM encoder that produces the FM encoded audio signal may be a separate analog encoder or may also be implemented in the control processor of the auxiliary audio device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.