Short Range FM Modulator/Transmitter and System Incorporating Same

• US 20110092156A1
• Filed: 05/08/2009
• Published: 04/21/2011
• Est. Priority Date: 05/08/2009
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Agere Systems Incorporated (Broadcom, Inc.)
• Inventors: Dreifus, David
• Granted Patent: US 8,285,209 B2
• Time in Patent Office: Days
• US Class Current: 455/41.2
• CPC Class Codes: H04B 1/034 Portable transmitters

Abstract

A short range radio transmitter device includes a radio signal modulator and transmitter, a receiver and a controller coupled to the receiver. The controller and receiver operate to examine a frequency spectrum to select a transmission frequency for the radio signal modulator and transmitter. A receiver system for use with the transmitter includes a data channel service enabled receiver and a controller. The controller of the receiver system automatically tunes the data channel service enabled receiver to a frequency identified in a data channel service component of a received signal.

Claims

1. A short range radio transmitter device comprising:

a radio signal modulator and transmitter;

a receiver; and

a controller coupled to said receiver, wherein said controller and receiver operate to examine a frequency spectrum to select a transmission frequency for said radio signal modulator and transmitter.

2. The short range radio transmitter device of claim 1, wherein said radio signal modulator and transmitter is data channel service enabled.

3. The short range radio transmitter device of claim 2, wherein said controller provides an identification of said selected transmission frequency to said radio signal modulator and transmitter for transmission to a remote receiver.

4. The short range radio transmitter device of claim 3, wherein said controller automatically tunes said radio signal modulator and transmitter to said selected transmission frequency for transmission of radio signals after said identification is transmitted to said remote receiver.

5. The short range radio transmitter device of claim 1, wherein said controller automatically tunes said radio signal modulator and transmitter to said selected transmission frequency for transmission of radio signals.

6. The short range radio transmitter device of claim 1, further comprising a display, wherein said controller causes said display to display said selected transmission frequency.

7. The short range radio transmitter device of claim 1, wherein said controller interrupts transmission by said radio signal modulator and transmitter while said frequency spectrum is examined.

8. The short range radio transmitter device of claim 1, wherein said radio signal modulator and transmitter is a FM modulator and transmitter.

9. The short range radio transmitter device of claim 1, wherein said controller and receiver operate to examine said frequency spectrum when interference is detected at a previously selected transmission frequency.

10. The short range radio transmitter device of claim 1, wherein said controller and receiver operate to examine said frequency spectrum at periodic intervals.

11. The short range radio transmitter device of claim 1, wherein said controller and receiver examine power levels for respective frequencies within said frequency spectrum.

12. A receiver system comprising:

a data channel service enabled receiver; and

a controller, said controller automatically tuning said data channel service enabled receiver to a frequency identified in a data channel service component of a received signal.

13. The receiver of claim 12, wherein said data channel service enabled receiver is a FM receiver.

14. A transmission and reception system, comprising:

a short range radio transmitter device comprising;

a data channel service enabled radio signal modulator and transmitter;

a receiver; and

a transmitter device controller coupled to said receiver, wherein said controller and receiver operate to examine a frequency spectrum to select a transmission frequency for said radio signal modulator and transmitter, and wherein said controller provides an identification of said selected transmission frequency to said data channel service enabled radio signal modulator and transmitter for transmission to a remote receiver; and

a data channel service enabled receiver device.

15. The system of claim 14, wherein said data channel service enabled receiver device includes a receiver controller, said receiver controller automatically tuning said data channel service enabled receiver to the selected transmission frequency.

16. The system of claim 14, wherein said data channel service enabled receiver device includes a receiver controller and a display, said receiver controller displaying said selected transmission frequency on said display.

17. The system of claim 14, wherein said transmitter device controller automatically tunes said data channel service enabled radio signal modulator and transmitter to said selected transmission frequency for transmission of radio signals after said identification is transmitted to said remote receiver.

18. The system of claim 14, wherein said transmitter device controller automatically tunes said data channel service enabled radio signal modulator and transmitter to said selected transmission frequency for transmission of radio signals.

19. The system of claim 14, wherein said transmitter device controller interrupts transmission by said data channel service enabled radio signal modulator and transmitter while said frequency spectrum is examined.

20. The system of claim 14, wherein said controller and receiver of said transmitter device examine power levels for respective frequencies within said frequency spectrum.