Video communication system

• US 20060265729A1
• Filed: 05/12/2006
• Published: 11/23/2006
• Est. Priority Date: 05/17/2005
• Status: Abandoned Application

• Current Assignee: Radio Digital Technique Incorporated
• Original Assignee: Radio Digital Technique Incorporated
• Inventors: Anglin, Richard L. Jr.
• Application Number:
  US11/433,921
• Publication Number:
  US 20060265729A1
• Time in Patent Office: Days
• US Class Current: 725/105
• CPC Class Codes: H04N 21/235 Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/435 Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Abstract

The present invention comprises a central network transceiver (10) which both transmits and receives wireless radio signals. The central network transceiver (10) emits a broadcast or “point-to-multipoint” signal (12) which is received by many users or customers (14) which are located remotely from the central network transceiver (10). Customers (14) view video content using a personal computer, a modified television that includes a video camera (18), or some other video terminal or appliance (16).

Claims

1. A method comprising the steps of:

conveying a point-to-multipoint broadcast signal (12) from a central network transceiver (10) to a plurality of remote wireless customer transceivers (16);

collecting a point-to-point return signal (20) from one of said plurality of remote wireless customer transceivers (16) at said central network transceiver (10); and

conveying an updated point-to-multipoint signal (22) from a central network transceiver (10) to said plurality of remote wireless customer transceivers (16);

said updated point-to-multipoint signal (22) including said point-to-point return signal (20) from one of said plurality of remote wireless customer transceivers (16);

said updated point-to-multipoint signal (22) providing a fully-interactive wireless video communication platform for a plurality of customers (14).

2. A method as recited in claim 1, further comprising the steps of:

generating a plurality of chirps (110, 112);

each of said plurality of chirps (110, 112) having a characteristic slope portion;

transmitting said plurality of chirps (110, 112) from said central network transceiver (10) without a carrier signal;

receiving said plurality of chirps (110, 112) at said remote wireless customer transceiver (16) without tuning to a carrier signal; and

extracting information from said plurality of chirps (110, 112) by reading said characteristic slope portion of each chirp (110, 112).

3. A method as recited in claim 2, in which each of said plurality of chirps is a linear frequency chirp (110,112).

4. A method as recited in claim 2, in which each of said plurality of chirps is a non- linear frequency chirp (114-120).

5. A method as recited in claim 2, in which said information is digital data.

6. A method as recited in claim 2, in which said information is a voice signal.

7. A method as recited in claim 2, in which said information is an audio signal.

8. A method as recited in claim 2, in which said information is video signal.

10. A method as recited in claim 2, in which allowed power levels are specified per frequency interval.

11. A method as recited in claim 2, in which services are dynamically allocated.

12. A method as recited in claim 2, in which the same digital input is simultaneously impressed on multiple RF frequencies without interfering with the information content of the digital data.

13. A method as recited in claim 2, in which transmission to different users may be combined in a single waveform by using different chirp modes.

14. A method as recited in claim 2, in which alternative chirp modes are used to define binary characters.

15. A method as recited in claim 2, in which alternative chirp modes are used to define alphanumeric characters.

16. A method as recited in claim 2, in which alternative chirp modes are used to define special characters.

17. A method as recited in claim 2, in which said remote wireless customer transceiver (16) is a mobile device.

9. A propagated signal comprising:

a plurality of chirps (110, 112);

said plurality of chirps (110, 112)each conveying an element of information as characterized by the slope of one portion of each of said plurality of chirps (110, 112);

said plurality chirps (110, 112) being capable of being received without the need for tuning to a carrier waveform.