Method of remotely adjusting display device and display device

• US 20030001829A1
• Filed: 06/06/2002
• Published: 01/02/2003
• Est. Priority Date: 06/18/2001
• Status: Active Grant

• Current Assignee: Sharp NEC Display Solutions, Ltd.
• Original Assignee: NEC Display Solutions, Ltd. (NEC Corporation)
• Inventors: Takamoto, Kazuaki, Katagiri, Takashi, Arakawa, Yasuhiro, Tanizoe, Hideki, Tachibana, Miyuki, Iwataka, Hiroki
• Granted Patent: US 9,047,801 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• 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

Abstract

A method of remotely adjusting a display device is provided which introduces the concept of Pages as a superordinate concept of VCPs known as control or adjustment item codes under current standards, defines the maximum value of the VCP Pages, and controls the VCP Pages from a personal computer, thereby to define and control more VCPs.

Claims

1. An expanded method of adjusting a display device remotely from a computer according to a predetermined standard, said predetermined standard having a control item code group, there being previously defined superordinate codes associated respectively with a plurality of control item code groups including said control item code group of said predetermined standard, said method comprising the steps of:

(a) specifying at least one of said superordinate codes between said computer and said display device; and

(b) adjusting said display device remotely from said computer by using at least one control item code group associated with said at least one specified superordinate code.

2. The method according to claim 1, wherein

said step (a) includes the steps of:

(a-1) sending a command for reading said superordinate codes from said computer to said display device; and

(a-2) judging that said display device is inadaptable to expansion if no reply to said command is sent from said display device.

3. The method according to claim 1, wherein

said step (a) includes the steps of:

(a-1) sending a command for reading said superordinate codes from said computer to said display device; and

(a-2) sending at least one of an upper limit and a lower limit of a variable range of said superordinate codes from said display device to said computer.

4. The method according to claim 1, wherein

a specific value of said superordinate codes is defined for factory-adjustable use,

said method further comprising the step of

(c) resetting said superordinate codes to a value different from said specific value in said display device when a default condition occurs.

5. The method according to claim 3, wherein

said step (a) further includes the step of

(a-3) ignoring in said display device a superordinate code outside said at least one of said upper and lower limits of said variable range of said superordinate codes if said display device is instructed by said computer about said superordinate code outside said at least one of said upper and lower limits.

6. The method according to claim 1, wherein

said step (a) includes the steps of:

(a-1) providing an instruction about a value of said superordinate codes from said computer to said display device; and

(a-2) sending said value in reply from said display device to said computer.

7. The method according to claim 1, wherein

said step (a) includes the steps of:

(a-1) sending a command for inquiry about an adjustment item support state including support for said superordinate codes from said computer to said display device;

(a-2) sending a reply command from said display device to said computer; and

(a-3) judging that said display device is inadaptable to expansion if said reply command does not include said superordinate codes.

9. A display device capable of being adjusted remotely from a computer by the method as recited in claim 1.

8. An expanded method of adjusting a display device remotely from a computer according to a predetermined standard, said predetermined standard having a control item code group, there being a plurality of pages prepared in such a manner that said control item code group of said predetermined standard is assigned to one of said plurality of pages and other control item code groups are assignable respectively to the remainder of said plurality of pages, said method comprising the steps of:

(a) specifying at least one of said plurality of pages between said computer and said display device; and

(b) adjusting said display device remotely from said computer by using at least one control item code group assigned to said at least one specified page.