System and method for dynamically establishing extended display identification data

• US 8,407,594 B2
• Filed: 07/22/2004
• Issued: 03/26/2013
• Est. Priority Date: 07/22/2004
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Inventors: Shintani, Peter, Kawamura, Ban
• Primary Examiner(s): Bashore, William
• Assistant Examiner(s): ORR, HENRY W
• Application Number:
  US10/896,690
• Publication Number:
  US 20060017751A1
• Time in Patent Office: 3,169 Days
• Field of Search: 715/722
• US Class Current: 715/722
• CPC Class Codes: G09G 2320/08 Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
• CPC Class Codes: G09G 2370/045 using multiple communication channels, e.g. parallel and serial
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092

Abstract

Preferred format parameters including timing that is contained in an extended display information data (EDID) EEPROM in a digital video display system can be dynamically established by a user. In this way, when the video display system engages a source of video in a “plug and play” context, instead of communicating to the source what formats are supported and then accepting a format selected by the source, the preferred format is sent from the EEPROM to the source so that the video display system receives video from the source in the user-desired format.

Claims

1. A method for establishing what format video is received from a source of video, comprising:

dynamically establishing at least one parameter associated with a user-preferred format in at least one memory of a video display system;

communicating at least the parameter to the source to cause the source to send video to the display system in the desired format; and

allowing a user to select one parameter from a group of parameters, wherein the parameter selected by the user is indicated at least in part by block 0 of an extended display information data (EDID) embodied in an electrically erasable programmable read-only memory (EEPROM) associated with the video display system.

2. The method of claim 1, wherein the parameter is selected from the group consisting of:

timing, scan lines, and aspect ratio.

3. The method of claim 1, wherein the parameter is communicated to the source in a plug-and-play operation.

4. The method of claim 3, comprising allowing a user to select one parameter from a group of parameters stored in the EEPROM, the EEPROM being altered as necessary to reflect the user selection.

5. A video display system including at least one processor and at least one format information storage apparatus, the processor executing logic comprising:

presenting, to a user, a visual display;

permitting the user to use the visual display to define a preferred video format; and

programming the information storage apparatus such that the information storage apparatus can indicate to a source of video the preferred video format such that the source sends video to the display system in the preferred video format, a checksum associated with the preferred video format being dynamically established to reflect the parameter selected by the user.

6. The system of claim 5, wherein the information storage apparatus is an extended display information data (EDID) electrically erasable programmable read-only memory (EEPROM).

7. The system of claim 5, wherein the information storage apparatus is programmed in response to a user selection of a preferred format with information selected from the group consisting of:

timing, scan lines, and aspect ratio.

8. The system of claim 7, wherein the information is communicated to the source in a plug-and-play operation.

9. The system of claim 8, wherein the processor allows a user to select one parameter from a group of parameters stored in the EEPROM, the EEPROM being altered as necessary to reflect the user selection.

10. The system of claim 8, wherein the processor allows a user to select one parameter from a group of parameters, the EEPROM being dynamically altered as necessary to contain only the parameter selected by the user.

11. A video display source, comprising:

at least one processor receiving information from a video display system, the information including at least one parameter established in response to a user selecting a preferred display format, the processor causing the source to send video data to the video display system only in the user-preferred display format in response to the parameter, a user being allowed to select one parameter from a group of parameters, wherein the processor automatically accesses block 0 of extended display information data (EDTD) in an EEPROM of the display system, block 0 pointing to a first descriptor block in block 1 of the EDID, the first descriptor block associated with at least one bit indicating a video display parameter that has been designated as being preferred by a user.

12. The display source of claim 11, wherein the processor automatically accesses the display system in response to detecting a plug-and-play signal.

13. The display source of claim 11, wherein the source is a DVD player.

14. The display source of claim 11, wherein the source is a television set-top box.

15. The display source of claim 11, wherein the source is a satellite receiver.