Transmission and receiver system operating on different frequency bands

• US 8,489,049 B1
• Filed: 11/15/2012
• Issued: 07/16/2013
• Est. Priority Date: 02/04/1999
• Status: Expired due to Fees

• Current Assignee: Dr. Hark C. Chan
• Original Assignee: Dr. Hark C. Chan
• Inventors: Chan, Hark C
• Primary Examiner(s): MILORD, MARCEAU
• Application Number:
  US13/678,442
• Time in Patent Office: 243 Days
• Field of Search: 455/150.1, 455/156.1, 455/186.1, 455/3.06, 455/161.1, 455/166.1, 455/158.1, 381/107, 348/725, 348/468, 709/219, 370/392, 370/395.64
• US Class Current: 455/150.1
• CPC Class Codes: H04H 20/26 Arrangements for switching distribution systems
• CPC Class Codes: H04H 60/13 Arrangements for device control affected by the broadcast information
• CPC Class Codes: H04H 60/25 Arrangements for updating broadcast information or broadcast-related information

Abstract

A receiver can extract digital data from wireless radio frequency signal. The digital data contains at least two compressed digital audio data each associated with a different audio program. One compressed digital audio data is delivered in a first frequency band and the other compressed digital audio data in a second frequency band. A user can select the audio program. The receiver also receives a command instructing the receiver to receive digital audio data from a communication channel in a frequency band.

Claims

1. A method for an apparatus to process digital data, comprising:

demodulating a first wireless radio frequency signal to generate at least a portion of a first compressed digital audio data, the first radio frequency signal being in a first frequency band, the first compressed digital audio data being associated with a first audio program;

decompressing the first compressed digital audio data using a first decompression algorithm to generate a first decompressed digital audio data;

processing the first decompressed digital audio data to generate a first analog audio signal;

demodulating a second wireless radio frequency signal to receive a command instructing the apparatus to receive digital audio data from a communication channel in a second frequency band;

allowing a user to select a second audio program; and

if the user selects the second audio program;

demodulating a third wireless radio frequency signal from the communication channel in the second frequency band to generate at least a portion of a second compressed digital audio data, the second compressed digital audio data being associated with the second audio program;

decompressing the second compressed digital audio data using a second decompression algorithm to generate a second decompressed digital audio data; and

processing the second decompressed digital audio data to generate a second analog audio signal.

2. The method of claim 1 wherein at least one of the decompressing the first compressed digital audio data and the decompressing the second compressed digital audio data comprises decompressing using a motion picture experts group decompression algorithm.

3. The method of claim 1 wherein at least one of the decompressing the first compressed digital audio data and the decompressing the second compressed digital audio data comprises decompressing using a voice quality decompression algorithm.

4. The method of claim 1 wherein at least one of the decompressing the first compressed digital audio data and the decompressing the second compressed digital audio data comprises decompressing using a parametric-type decompression algorithm.

5. The method of claim 1 wherein at least one of the first and the second decompression algorithms is in a ROM.

6. The method of claim 1 wherein at least one of the first and the second frequency bands comprises a PCS band.

7. The method of claim 6 wherein at least one of the decompressing the first compressed digital audio data and the decompressing the second compressed digital audio data comprises decompressing using a motion picture experts group decompression algorithm.

8. The method of claim 6 wherein at least one of the decompressing the first compressed digital audio data and the decompressing the second compressed digital audio data comprises decompressing using a voice quality decompression algorithm.

9. The method of claim 6 wherein at least one of the decompressing the first compressed digital audio data and the decompressing the second compressed digital audio data comprises decompressing using a parametric-type decompression algorithm.

10. The method of claim 6 wherein at least one of the first and the second decompression algorithms is in a ROM.

11. The method of claim 1 wherein the communication channel comprises a portion of a TV frequency spectrum.

12. The method of claim 11 wherein the decompressing the second compressed digital audio data comprises decompressing using a voice quality decompression algorithm.

13. The method of claim 11 wherein at least one of the first and the second decompression algorithms is in a ROM.

14. The method of claim 11 wherein the decompressing the second compressed digital audio data comprises decompressing using a parametric-type decompression algorithm.