Terminal and input/output characteristic measurement method and calculation apparatus for display device

• US 6,504,950 B1
• Filed: 03/04/1999
• Issued: 01/07/2003
• Est. Priority Date: 05/27/1998
• Status: Expired due to Fees

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Murashita, Kimitaka, Suzuki, Shoji, Mori, Masahiro
• Primary Examiner(s): Grant, II, Jerome
• Application Number:
  US09/262,010
• Time in Patent Office: 1,405 Days
• Field of Search: 382/162, 382/167, 358/500, 358/518, 358/504, 358/520
• US Class Current: 382/162
• CPC Class Codes: G09G 1/165 Details of a display terminal using a CRT, the details relating to the control arrangement of the display terminal and to the interfaces thereto details suitable for both CRT and flat panel G09G5/003; specific for a flat panel G09G3/2092
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 2320/043 Preventing or counteracting the effects of ageing
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2320/0673 for control of gamma adjustment, e.g. selecting another gamma curve
• CPC Class Codes: G09G 2320/0693 Calibration of display systems
• 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
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

An apparatus for creating an ICC profile in a simple manner without using a specialized measuring instrument. A display control unit reads out a dot pattern image from a pattern image data holding unit and a grayscale pattern image containing a plurality of grayscale patches of gradually varying gray scale from a grayscale image data holding unit, and presents the thus readout images for display on a display device. A user selects the grayscale patch having brightness closest to the brightness of the dot pattern image by operating a selection unit. Based on the selection, a gamma coefficient value is calculated by a gamma coefficient value calculation unit, and based on this gamma coefficient value, a profile creation unit modifies the ICC profile held in a common information holding unit and thus creates a customized ICC profile.

Claims

1. A calibration method for a display device, comprising:

a calibration data transmitting step for transmitting calibration data from first equipment to second equipment via a network, said calibration data being held at said first equipment and transmitted in relation to a reference profile held at said first or said second equipment and applicable to a display device provided at said second equipment;

a calibration image displaying step for displaying a calibration image and guidance based on said calibration data on said display device at said second equipment;

a display calibration information collecting step for collecting data relating to the profile of said display device when an operation is performed in accordance with said guidance; and

a reference profile modifying and holding step for modifying said reference profile at said second equipment or at said first equipment based on said collected display calibration information, and for holding said modified reference profile as a new reference profile at said first or said second equipment.

2. A calibration method for a display device as claimed in claim 1, further comprising a profile incorporating step for automatically incorporating said new reference profile held at said first or said second equipment in said reference profile modifying and holding step into a profile created in compliance with an ICC profile in a color management system at said second equipment.

3. A calibration method for a display device, comprising:

a calibration data transmitting step for transmitting calibration data from first equipment to second equipment via a network, said calibration data relating to a profile for a display device provided at said second equipment;

a calibration image displaying step for displaying a calibration image and guidance based on said calibration data on said display device at said second equipment; and

a display adjusting means re-set ting step for changing the setting of display adjusting means provided on said display device when said display adjusting means on said display device is operated in accordance with said guidance and, further comprising;

a calibration data transmission data holding step for holding at said first equipment data indicating the month, day, and year that said calibration data relating to the profile of said display device provided at said second equipment was transmitted from said first equipment to said second equipment via said network in said calibration data transmitting step; and

a calibration reminding notification transmitting step for transmitting a notification reminding said second equipment of the arrival of time to calibrate said display device, from said first equipment to said second equipment via said network when a predetermined period has elapsed from said calibration data transmission date.

4. A calibration apparatus for a display device, comprising a network for data transmission, first equipment which stores and manages data, and second equipment which uses functions of said first equipment, wherein:

said first equipment includes calibration data holding means for holding therein calibration data relating to a profile for a display device provided at said second equipment,

said second equipment includes said display device, display control means for controlling a display to be produced on said display device, and display calibration information collecting means; and

said display control means, upon detecting the arrival of said calibration data transmitted from said first equipment to said second equipment via said network, displays a calibration image and guidance based on said calibration data on said display device at said second equipment and, when an operation is performed on said display device in accordance with said guidance, said display calibration information collecting means collects data relating to the profile of said display device based on said performed operation.

5. A calibration apparatus for a display device as claimed in claim 4, wherein:

said first equipment further includes profile holding means for holding therein a reference profile for said display device provided at said second equipment, and a profile modifying means for modifying said reference profile;

said second equipment transmits the data relating to the profile of said display device, collected by said display calibration information collecting means, as display calibration information to said profile modifying means at said first equipment via said network; and

said profile modifying means modifies said reference profile based on said transmitted display calibration information, and said profile holding means holds said modified reference profile as a new reference profile.

6. A calibration apparatus for a display device as claimed in claim 4, wherein:

said first equipment further includes profile modifying means for modifying the profile of said display device provided at said second equipment;

said second equipment further includes profile holding means for holding therein a reference profile for said display device provided at said second equipment; and

when transmitting the data relating to the profile of said display device, collected by said display calibration information collecting means as display calibration information, to said profile modifying means at said first equipment via said network, said second equipment also transmits said reference profile held in said profile holding means;

said profile modifying means modifies said transmitted reference profile based on said transmitted display calibration information; and

said first equipment transmits said modified reference profile to said second equipment, and said profile holding means holds said modified reference profile as a new reference profile.

7. A calibration apparatus for a display device as claimed in claim 6, further comprising profile incorporating means for automatically incorporating said new reference profile held in said profile holding means into a profile created in compliance with an ICC profile in a color management system at said second equipment.

8. A calibration apparatus for a display device, comprising:

a network for data transmission;

first equipment which stores and manages data; and

second equipment which uses functions of said first equipment, wherein;

said first equipment includes calibration data holding means for holding therein calibration data relating to a profile for a display device provided at said second equipment,

said second equipment includes said display device, display control means for controlling a display to be produced on said display device and display adjusting means; and

said display control means, upon detecting the arrival of said calibration data transmitted from said first equipment to said second equipment via said network, displays a calibration image and guidance based on said calibration data on said display device at said second equipment, and said display adjusting means is operated in accordance with said guidance.

9. A calibration apparatus for a display device, comprising:

a network for data transmission first equipment which stores and manages data; and

second equipment which uses functions of said first equipment, wherein;

said first equipment includes calibration data holding means for holding therein calibration data relating to a profile for a display device provided at said second equipment, calibration data transmission data holding means for holding therein data indicating the month, day, and year that said calibration data was transmitted to said second equipment, and calibration reminding notification transmitting means for transmitting a notification reminding said second equipment of the arrival of time to calibrate said display device, from said first equipment to said second equipment via said network when a predetermined period has elapsed from said calibration data transmission date.

10. A calibration apparatus for a display device as claimed in claim 9, wherein:

said first equipment further includes an electronic mail server for sending electronic mail, and an electronic mail address holding means for holding therein an electronic mail address of said second equipment; and

said calibration reminding notification transmitting means transmits said calibration reminding notification to said electronic mail address via said electronic mail server.