Wireless monitor proxy

• US 20070188481A1
• Filed: 02/10/2006
• Published: 08/16/2007
• Est. Priority Date: 02/10/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Christison, Gregory, Doherty, Brian, Sarallo, John, Schrum, Sidney
• Granted Patent: US 8,325,107 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: G09G 2370/042 for monitor identification
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• 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

Abstract

The present invention provides a method and apparatus for optimizing the transmission of video configuration data in a system comprising a host computer and a display monitor. The invention comprises a wireless video source adapter connected to the host computer and a wireless video sink adapter connected to the monitor. Upon system startup, the video sink adapter acquires EDID information from the monitor and transmits it to the video source adapter, which does not activate its connection and indicate its presence to the host computer until after receiving the EDID information. The video source adapter then supplies the EDID information to the host computer in response to EDID requests from the computer. In this manner, the video source adapter acts as a virtual proxy for the display monitor from the point of the view of the host computer. The host computer then uses the EDID information to configure its video signal to match the parameters of the display monitor.

Claims

1. A method for optimizing the transmission of wireless video configuration data in a system comprising a display monitor connected to a first wireless adapter and a host computer connected to a second wireless adapter, the method comprising the steps of:

(a) sending EDID information from the monitor to the first wireless adapter in response to an EDID request from the first wireless adapter;

(b) transmitting said EDID information over a wireless link from the first wireless adapter to the second wireless adapter; and

(c) sending said EDID information from the second wireless adapter to the host computer in response to an EDID request from the host computer, wherein the second wireless adapter acts as a proxy for the monitor from the point of view of the host computer.

2. The method according to claim 1, wherein the first wireless adapter is configured as a master of the display monitor.

3. The method according to claim 1, wherein the host computer is configured as a master of the second wireless adapter.

4. The method according to claim 1, wherein steps (a) and (b) occur as part of the system start up process.

5. The method according to claim 1, wherein the second wireless adapter does not activate its connection and indicate its presence to the host computer until after receiving the EDID information from the first wireless adapter.

6. The method according to claim 1, wherein the second wireless adapter stores the EDID information in a driver controlling the connection between the second wireless adapter and the host computer.

7. An apparatus for optimizing the transmission of wireless video configuration data in a system comprising a host computer and a display monitor, the apparatus comprising:

(a) a first wireless adapter connected to the display monitor, wherein the monitor sends EDID information to the first wireless adapter in response to an EDID request from the first wireless adapter; and

(b) a second wireless adapter connected to the host computer, wherein the second wireless adapter receives said EDID information from the first wireless adapter via wireless transmission, and wherein the second wireless adapter sends said EDID information to the host computer in response to an EDID request from the host computer, wherein the second wireless adapter acts as a proxy for the monitor from the point of view of the host computer.

8. The apparatus according to claim 7, wherein the first wireless adapter is configured as a master of the display monitor.

9. The apparatus according to claim 7, wherein the host computer is configured as a master of the second wireless adapter.

10. The apparatus according to claim 7, wherein the EDID information is acquired from the display monitor and transmitted to the second wireless adapter as part of the system start up process.

11. The apparatus according to claim 7, wherein the second wireless adapter does not activate its connection and indicate its presence to the host computer until after receiving the EDID information from the first wireless adapter.

12. The apparatus according to claim 7, wherein the second wireless adapter stores the EDID information in a driver controlling the connection between the second wireless adapter and the host computer.