Custom edid content generation system and method

• US 20070186015A1
• Filed: 02/08/2006
• Published: 08/09/2007
• Est. Priority Date: 02/08/2006
• Status: Abandoned Application

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Taft, Frederick, Setera, Michael
• Application Number:
  US11/351,007
• Publication Number:
  US 20070186015A1
• Time in Patent Office: Days
• US Class Current: 710/16
• CPC Class Codes: G09G 2370/047 using display data channel standard [DDC] communication
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus

Abstract

A composite EDID content generator includes an EDID memory module, containing EDID information, and a processor, interconnected to the EDID memory module and interconnected between an AV source device and a plurality of AV sink devices. Each AV sink device has a unique EDID, and the processor is configured to generate a combined EDID representing the combined characteristics of the plurality of AV sink devices, and to transmit the combined EDID to the AV source device.

Claims

1. An AV system, comprising:

an AV source device;

a plurality of AV sink devices, each sink device having an EDID; and

a composite EDID content generator, operably disposed between the AV source device and the plurality of AV sink devices, configured to read the EDID of each AV sink device, and to generate a composite EDID representing the combined characteristics of the plurality of AV sink devices.

2. A system in accordance with claim 1, wherein the AV source device is selected from the group consisting of a video source device, an external audio source device, and a combined audio and video source device, and the AV sink devices are selected from the group consisting of a video display, a 2 channel audio system, and an external 5.1 surround-sound audio system.

3. A system in accordance with claim 1, wherein the composite EDID content generator further comprises

an EDID memory module, containing EDID information;

and

a processor, interconnected to the EDID memory module and interconnected between an AV source device and a plurality of AV sink devices, each AV sink device having a unique EDID, the processor being configured to generate a combined EDID representing the combined characteristics of the plurality of AV sink devices, and to transmit the combined EDID to the AV source device.

4. A system in accordance with claim 3, wherein the composite EDID content generator further comprises a splitter, configured to separate audio and video portions of a signal from the AV source device and direct the portions to separate audio and video sink devices.

5. A system in accordance with claim 4, wherein the splitter further comprises a receiver, a transmitter, and a plurality of switches, controlled by the processor, the processor manipulating the switches to direct the audio and video portions between the transmitter and receiver and a plurality of output ports.

6. A system in accordance with claim 5, wherein the transmitter is selected from the group consisting of an HDMI transmitter and a DVI transmitter.

7. A system in accordance with claim 1, wherein the composite EDID content generator further comprises a plurality of connection ports, selected from the group consisting of an HDMI input port, an audio output port, an HDMI output port, and a DVI output port.

8. A system in accordance with claim 1, wherein the composite EDID content generator further comprises an audio sink switch configured to designate a selected audio sink device to receive an audio portion of a signal from the AV source device.

9. A system in accordance with claim 8, wherein the audio sink switch is selected from the group consisting of a mechanical switch, and an embedded switch.

10. A system in accordance with claim 1, wherein the composite EDID content generator further comprises a visual display and selection switches whereby a user selects and programs AV source and AV sink settings.

11. A composite EDID content generator, comprising:

an EDID memory module, containing EDID information; and

a processor, interconnected to the EDID memory module and interconnected between an AV source device and a plurality of AV sink devices, each AV sink device having a unique EDID, the processor being configured to generate a combined EDID representing the combined characteristics of the plurality of AV sink devices, and to transmit the combined EDID to the AV source device.

12. A composite EDID content generator in accordance with claim 11, further comprising a signal splitter, configured to direct video and audio portions of a signal from the AV source device to separate video and audio sink devices.

13. A composite EDID content generator in accordance with claim 12, wherein the signal splitter comprises

a receiver, configured to receive the signal from the AV source device, to recognize the type thereof, and to split the signal into audio and video portions;

and

a transmitter, configured to receive at least one of the audio and video portions of the AV signal from the receiver, and to transmit the at least one portion to at least one of a plurality of output ports interconnected to the plurality of AV sink devices.

14. A composite EDID content generator in accordance with claim 11, further comprising an audio sink switch, configured to designate a selected audio sink device to receive an audio portion of a signal from the AV source device.

15. A composite EDID content generator in accordance with claim 11, further comprising a visual display and selection switches whereby a user selects and programs AV source and AV sink settings.

16. A method for interconnecting an AV source device and a plurality of AV sink devices, comprising the steps of

reading an EDID of each of the plurality of AV sink devices;

generating a composite EDID representing the combined characteristics of the plurality of AV sink devices; and

exposing the composite EDID to the AV source device.

17. A method in accordance with claim 16, further comprising the step of splitting audio and video portions of a signal from the AV source device between separate audio and video sink devices, respectively.

18. A method in accordance with claim 16, further comprising the step of setting an audio sink switch to designate a selected audio sink device.

19. A method in accordance with claim 16, wherein the step of generating a composite EDID further comprises the steps of:

comparing the EDID of each of the plurality of AV sink devices; and

generating a 128 byte EDID representing the combined characteristics of the plurality of AV sink devices.

20. A method in accordance with claim 19, wherein the step of generating a 128 byte EDID further comprises generating a base EDID with an EDID extension.