Display system and computer-readable medium

Patent metadata

Field	Value
Publication number	US-9236027-B2
Application number	US-201213708623-A
Country	US
Kind code	B2
Filing date	Dec 7, 2012
Priority date	Dec 9, 2011
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

The present invention provides a display system capable of efficiently calibrating image content even when the image is displayed and thereby capable of reducing the time and cost required for calibration, and also provides a computer-readable recording medium. The control device thereof processes an image to be displayed on a display section beforehand so as to be usable for calibration. While the image is actually being displayed on the display section, the control device captures an image displayed on the display section using a capturing device at the timing at which a calibration image is displayed, compares the luminance or color in the calibration image with the luminance or color in the image obtained by capturing the calibration image, and creates correction information for correcting an image signal to be output to the display section on the basis of the result of the comparison.

First claim

What is claimed is:

1. A display system comprising:
a display section configured to display an image on the basis of an image signal which is composed of a plurality of frame images provided continuously in time sequence and is generated from a content data, wherein the image signal is not a predetermined calibration image;
a signal processing section configured to output the image signal to the display section;
a first specifying section configured to specify a frame image from among the plurality of frame images, the specified frame image including a region having predetermined luminance or color at a predetermined ratio or more;
a calibration image producing section configured to produce a calibration image from the specified frame image specified by the first specifying section including a region to be estimated to have uniform luminance or color;
an image signal generating section, from the calibration image produced by the calibration image producing section and the image signal to be output to the display section, configured to generate a new image signal including the calibration image;
a timing specifying section configured to specify a timing at which the calibration image included in the new image signal generated by the image signal generating section is displayed on the display section;
a capturing section configured to capture the calibration image which is displayed on the display section;
a capturing control section configured to cause the capturing section to perform capturing the calibration image at the timing specified by the timing specifying section;
a comparison section configured to compare a luminance or color in the calibration image produced by the calibration image producing section with a luminance or color in the calibration image captured by the capturing section; and
a correction information creating section configured to create correction information for correcting an image signal on the basis of the result of the comparison performed by the comparison section.

2. A display system comprising:
a display section configured to display an image on the basis of an image signal which is composed of a plurality of frame images provided continuously in time sequence and is generated from a content data, wherein the image signal is not a predetermined calibration image;
a signal processing section configured to output the image signal to the display section;
a region extracting section configured to extract a region from among the plurality of frame images, the extracted region having uniform luminance or color, for a calibration of luminance or color displayed on the display section;
a timing specifying section configured to specify a timing at which the frame image including the region for a calibration extracted by the region extracting section is displayed on the display section;
a capturing section configured to capture the frame image which is displayed on the display section;
a capturing control section configured to cause the capturing section to perform capturing the frame image including the region for a calibration at the timing specified by the timing specifying section;
a comparison section configured to compare a luminance or color in the region of the frame image extracted by the region extracting section with a luminance or color in the region of the frame image captured by the capturing section, corresponding to the region extracted by the region extracting section; and
a correction information creating section configured to create correction information for correcting an image signal on the basis of the result of the comparison performed by the comparison section.

3. The display system according to claim 1 , wherein
the image signal generating section inserts the calibration image ahead of or behind the specified frame image specified by the first specifying section.

4. The display system according to claim 1 , wherein
the image signal generating section replaces the specified frame image specified by the first specifying section, a first frame image ahead of the specified frame image, or a second frame image behind the specified frame image with the calibration image.

5. The display system according to claim 1 , further comprising:
a second specifying section configured to specify two frame images being different in image features by a predetermined value or more among the plurality of frame images provided continuously in time sequence, wherein
the calibration image producing section produces the calibration image on the basis of either one of the two frame images specified by the second specifying section, and
the image signal generating section inserts the calibration image produced by the calibration image producing section between the two frame images specified by the second specifying section.

6. The display system according to claim 1 , further comprising:
a second specifying section configured to specify two frame images being different in image features by a predetermined value or more among the plurality of frame images provided continuously in time sequence, wherein
the calibration image producing section produces the calibration image on the basis of either one of the two frame images specified by the second specifying section, and
the image signal generating section replaces either one or both of the two frame images specified by the second specifying section with the calibration image produced by the calibration image producing section.

7. The display system according to claim 1 , wherein
the image signal generating section generates a new image signal including continuous calibration images having the same luminance or color from the calibration image produced by the calibration image producing section.

8. The display system according to claim 1 , further comprising:
a storage section for storing information on calibration images, wherein
the calibration image producing section produces calibration images including regions having a luminance or color each for different luminance or color, and

the storage section stores information for specifying an order of each calibration image included in the image signal generated by the image signal generating section and information on the luminance or color of the region included in each calibration image.

9. The display system according to claim 1 , wherein
the display section is formed of a plurality of panels, each displaying an image on the basis of an image signal,
the signal processing section divides the image signal of one image into a plurality of image signals so as to correspond to an arrangement of the plurality of panels and outputs the respective divided image signals to the plurality of panels, and
the comparison section
divides a calibration image captured by the capturing section so as to correspond to the arrangement of the plurality of panels,
divides the calibration image so as to correspond to the arrangement of the plurality of panels, and
compares each luminance or color of the divided captured calibration images corresponding to the arrangement of the panels with each luminance or color of the divided calibration images also corresponding to the arrangement of the panels.

10. The display system according to claim 2 , wherein
the display section is formed of a plurality of panels, each displaying an image on the basis of an image signal,
the signal processing section divides the image signal of one image into a plurality of image signals so as to correspond to an arrangement of the plurality of panels and outputs the divided respective image signals to the plurality of panels, and
the region extracting section extracts regions to be estimated to

Assignees

• Ishida Hiroshi
• Sharp Kk

Inventors

• Ishida Hiroshi

Classifications

• G09G3/20 Primary

  for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} · CPC title

• G09G2320/0693

  Calibration of display systems · CPC title

• G09G5/10 Primary

  Intensity circuits · CPC title

• G09G2320/0285

  using tables for spatial correction of display data · CPC title

• G09G2360/147

  the originated light output being determined for each pixel · CPC title