Receiver system for audio information

• US 9,608,744 B1
• Filed: 03/03/2016
• Issued: 03/28/2017
• 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:
  US15/060,324
• Time in Patent Office: 390 Days
• Field of Search: 455/150.1, 455/156.1, 455/186.1, 455/3.06, 455/166.1, 455/158.1
• US Class Current: 1/1
• 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 index data and corresponding content digital audio data. The index data can comprise compressed digital audio data. The index data and content digital audio data are stored in memory. The index data can be retrieved from the memory, decompressed and then converted to analog audio signals. A user can use the analog audio signals from the index data to select audio content for playing by the receiver.

Claims

1. A method for a device to process digital data, comprising:

demodulating wireless radio frequency signals to generate first compressed digital audio data and associated first index data, the first index data comprising compressed digital audio data;

demodulating the wireless radio frequency signals to generate second compressed digital audio data and associated second index data, the second index data comprising compressed digital audio data;

storing in memory the first compressed digital audio data, the first index data, the second compressed digital audio data, and the second index data;

retrieving the first and the second index data from the memory;

decompressing the retrieved first index data to generate first decompressed digital audio data;

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

after a predetermined time period from generating the first analog audio signal, decompressing the retrieved second index data to generate second decompressed digital audio data;

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

allowing a user to select one of the first or the second compressed digital audio data in response to the first and the second analog audio signals, comprising;

providing a user-interface for the user to make a selection during the predetermined time period between generation of the first analog audio signal and generation of the second analog audio signal, and

selecting the first compressed digital audio data if the user uses the user interface to make the selection during the predetermined time period;

retrieving the selected first compressed digital audio data from the memory and decompressing the retrieved first compressed digital audio data to generate third decompressed digital audio data; and

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

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

3. The method of claim 1 wherein the decompressing the retrieved first index data and decompressing the retrieved second index data comprises decompressing using voice quality decompression algorithm.

4. The method of claim 1 wherein the memory continues to store the first compressed digital audio data, the second compressed digital audio data, the first index data, and the second index data after at least a portion of the device is not powered.

5. The method of claim 1 wherein the wireless radio frequency signals comprises radio frequency signals in a PCS band.