Image processing device and image processing method

• US 7,522,161 B2
• Filed: 05/17/2005
• Issued: 04/21/2009
• Est. Priority Date: 05/18/2004
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kataoka, Noriyasu, Ogura, Toshiyuki
• Primary Examiner(s): Hjerpe; Richard
• Assistant Examiner(s): Shapiro; Leonid
• Application Number:
  US11/130,503
• Publication Number:
  US 20060012613A1
• Time in Patent Office: 1,435 Days
• Field of Search: 345/204, 345/690, 345/55, 345/82
• US Class Current: 345/204
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• CPC Class Codes: G09G 3/2074 using sub-pixels

Abstract

An image processing device for displaying an image in high quality on color image display using fixed pixels. The image processing device causes a display device making pixels of R, G and B arranged inside each of a plurality of areas on a screen emit light to display a designated color in unit areas. A signal generation circuit determines a pixel of which an arrangement position is not matched with a reference position of the unit area used for reference by a first pixel signal as a target to be interpolated among pixels of R, G and B, generates a second pixel signal which uses the arrangement position of the pixel to be interpolated as a reference on the basis of the first pixel signal.

Claims

1. An image processing device driving a display device which makes pixels of red (R), green (G) and blue (B) arranged inside each of a plurality of areas on a screen emit light to display a designated color in the unit areas, said image processing device comprising:

a signal generation circuit determining a pixel of which an arrangement position is not matched with a reference position of the unit area used for reference by a first pixel signal of the pixel as a target to be interpolated among pixels of R, G and B, and generating a second pixel signal which uses the arrangement position of the pixel to be interpolated as a reference on the basis of the first pixel signal,

wherein the reference position is a center of the unit area and the arrangement position is a center of a region in which the pixel is arranged.

2. An image processing device as set forth in claim 1, wherein said signal generation circuit performs an interpolation processing on the basis of the first pixel signal of the pixel to be interpolated and the first pixel signal of a pixel having same color in another unit area free from the pixel to be interpolated to generate the second pixel signal.

3. An image processing device as set forth in claim 1, further comprising a drive circuit driving light emission of the pixels corresponding to the second pixel signal on the basis of the pixel signal generated by the signal generation circuit.

4. An image processing device as set forth in claim 1, wherein the display device is driven, that display device makes the pixels of R, G and B which are arranged continuously or with adjoining respectively inside each of a plurality of the unit areas on the screen emit light to display the designated color in the unit area.

5. An image processing method driving a display device which makes pixels of red (R), green (G) and blue (B) arranged inside each of a plurality of areas on a screen emit light to display a designated color in areas, said image processing method comprising:

a step of determining a pixel of which an arrangement position is not matched with a reference position of the unit area used for reference by a first pixel signal of the pixel as a target to be interpolated among pixels of R, G and B, and generating a second pixel signal which uses the arrangement position of the pixel to be interpolated as a reference on the basis of the first pixel signal, and

a step of driving a light emission of the pixel corresponding to the second pixel signal on the basis of the second pixel signal generated in the determining steps,

wherein the reference position is a center of the unit area and the arrangement position is a center of a region in which the pixel is arranged.

6. An image processing device driving a display device which makes pixels of red (R), green (G) and blue (B) arranged inside each of a plurality of areas on a screen emit light to display a designated color in the unit areas, said image processing device comprising:

a signal generation circuit determining a pixel of which an arrangement position is not matched with a reference position of the unit area used for reference by a first pixel signal of the pixel as a target to be interpolated among pixels of R, G and B, and generating a second pixel signal which uses the arrangement position of the pixel to be interpolated as a reference on the basis of the first pixel signal,

wherein the display device is driven, that display device makes the pixels of R, G and B which are arranged continuously or with adjoining respectively inside each of a plurality of the unit areas on the screen emit light to display the designated color in the unit area.