Controlling Display Resolution Of A Computer Display

• US 20090278871A1
• Filed: 05/09/2008
• Published: 11/12/2009
• Est. Priority Date: 05/09/2008
• Status: Abandoned Application

• Current Assignee: Lenovo Enterprise Solutions (Singapore) Pte., Ltd. (Lenovo Group Ltd.)
• Original Assignee: International Business Machines Corporation
• Inventors: Lewis, Thomas F., Piper, Robert M.
• Application Number:
  US12/118,081
• Publication Number:
  US 20090278871A1
• Time in Patent Office: Days
• US Class Current: 345/698
• CPC Class Codes: G06F 3/1462 with means for detecting differences between the image stored in the host and the images displayed on the remote displays
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2370/047 using display data channel standard [DDC] communication

Abstract

Methods, apparatus, and products for controlling display resolution of a computer display, the computer display connected through a display resolution controller to a computer, including: retrieving, by a display resolution controller from a computer display, extended display identification data (‘EDID’) of the computer display, the EDID including an actual maximum display resolution of the computer display, the EDID stored in computer memory of the computer display; replacing, by the display resolution controller, the actual maximum display resolution of the computer display with a limited maximum display resolution of the computer display if the limited maximum display resolution is less than the actual maximum display resolution of the computer display; and providing the EDID including the limited maximum display resolution to the computer for displaying video at the limited maximum display resolution.

Claims

1. A method of controlling display resolution of a computer display, the computer display connected through a display resolution controller to a computer, the method comprising:

retrieving, by a display resolution controller from a computer display, extended display identification data (‘

EDID’

) of the computer display, the EDID including an actual maximum display resolution of the computer display, the EDID stored in computer memory of the computer display;

replacing, by the display resolution controller, the actual maximum display resolution of the computer display with a limited maximum display resolution of the computer display if the limited maximum display resolution is less than the actual maximum display resolution of the computer display; and

providing the EDID including the limited maximum display resolution to the computer for displaying video at the limited maximum display resolution.

2. The method of claim 1 further comprising:

detecting by the display resolution controller a new connection of another computer display.

3. The method of claim 1 wherein the limited maximum display resolution is a user-defined value.

4. The method of claim 1 wherein the limited maximum display resolution is established as a preset in the display resolution controller by a manufacturer of the display resolution controller.

5. The method of claim 1 further comprising:

establishing, by an application executing on the computer in dependence upon bandwidth limits of one or more remote clients capable of remote control of the computer, the limited maximum display resolution dynamically during operation of the computer.

6. The method of claim 1 wherein the display resolution controller further comprises an aggregation of computer hardware and software implemented as part of the computer that adapts one or more computer displays to the computer.

7. The method of claim 1 wherein the display resolution controller further comprises an aggregation of computer hardware and software implemented external to the computer that adapts one or more computer displays to the computer.

8. An apparatus for controlling display resolution of a computer display, the computer display connected through a display resolution controller to a computer, the apparatus comprising a computer processor, a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions capable of:

retrieving, by a display resolution controller from a computer display, extended display identification data (‘

EDID’

) of the computer display, the EDID including an actual maximum display resolution of the computer display, the EDID stored in computer memory of the computer display;

replacing, by the display resolution controller, the actual maximum display resolution of the computer display with a limited maximum display resolution of the computer display if the limited maximum display resolution is less than the actual maximum display resolution of the computer display; and

providing the EDID including the limited maximum display resolution to the computer for displaying video at the limited maximum display resolution.

9. The apparatus of claim 8 further comprising computer program instructions capable of:

detecting by the display resolution controller a new connection of another computer display.

10. The apparatus of claim 8 wherein the limited maximum display resolution is a user-defined value.

11. The apparatus of claim 8 wherein the limited maximum display resolution is established as a preset in the display resolution controller by a manufacturer of the display resolution controller.

12. The apparatus of claim 8 wherein the display resolution controller further comprises an aggregation of computer hardware and software implemented as part of the computer that adapts one or more computer displays to the computer.

13. The apparatus of claim 8 wherein the display resolution controller further comprises an aggregation of computer hardware and software implemented external to the computer that adapts one or more computer displays to the computer.

14. A computer program product for controlling display resolution of a computer display, the computer display connected through a display resolution controller to a computer, the computer program product disposed in a signal bearing medium, the computer program product comprising computer program instructions capable of:

retrieving, by a display resolution controller from a computer display, extended display identification data (‘

EDID’

) of the computer display, the EDID including an actual maximum display resolution of the computer display, the EDID stored in computer memory of the computer display;

replacing, by the display resolution controller, the actual maximum display resolution of the computer display with a limited maximum display resolution of the computer display if the limited maximum display resolution is less than the actual maximum display resolution of the computer display; and

providing the EDID including the limited maximum display resolution to the computer for displaying video at the limited maximum display resolution.

15. The computer program product of claim 14 further comprising computer program instructions capable of:

detecting by the display resolution controller a new connection of another computer display.

16. The computer program product of claim 14 wherein the limited maximum display resolution is a user-defined value.

17. The computer program product of claim 14 wherein the limited maximum display resolution is established as a preset in the display resolution controller by a manufacturer of the display resolution controller.

18. The computer program product of claim 14 wherein the display resolution controller further comprises an aggregation of computer hardware and software implemented as part of the computer that adapts one or more computer displays to the computer.

19. The computer program product of claim 14 wherein the display resolution controller further comprises an aggregation of computer hardware and software implemented external to the computer that adapts one or more computer displays to the computer.

20. The computer program product of claim 14 wherein the signal bearing medium comprises a recordable medium.