JP2013031025A5

JP2013031025A5 -

Info

Publication number: JP2013031025A5
Application number: JP2011166183A
Authority: JP
Filing date: 2011-07-29
Publication date: 2014-05-01
Anticipated expiration: 2031-07-29

Description

上記課題を解決するために、例えば特許請求の範囲に記載の構成を採用する。 In order to solve the above problems, for example, the configuration described in the claims is adopted .

Claims

  In an image transmission device for compressing and transmitting image data,
  A color difference signal processing unit that narrows a possible range of the color difference signal by coordinate conversion using the correlation with the luminance signal;
  A compression processing unit for compressing image data composed of luminance color difference signals;
  A data transfer unit that outputs the image data compressed by the compression processing unit;
  The image transfer apparatus, wherein the data transfer unit outputs information on processing performed by the color difference signal processing unit and the compression processing unit together with the compressed image data.

  The image transmission apparatus according to claim 1.
  The compression processing unit includes a horizontal compression unit that compresses image data composed of luminance color difference signals for each image data unit block composed of a predetermined number of pixels, and image data composed of luminance color difference signals composed of a predetermined number of pixels. Depending on the vertical compression unit that performs compression processing for each unit block, the storage unit that stores the output of the horizontal compression unit and the output of the vertical compression unit for at least one horizontal effective period, and the compression rate and compression processing of each image data unit block A compression rate / image quality evaluation unit that selects a compression coding method based on an index indicating image degradation;
  The information relating to the processing performed by the compression processing unit includes compression code information regarding the processing performed by the compression processing unit.

  The image transmission apparatus according to claim 1 or 2,
  A transmission clock signal generation unit that generates a transmission clock signal synchronized with an uncompressed clock of the image data;
  The image transmission apparatus, wherein the data transfer unit outputs the compressed image data in synchronization with a transmission clock output from the signal generation unit.

  In an image transmission method in an image transmission apparatus for compressing and transmitting image data,
  Performing color difference signal processing for narrowing a possible range of the color difference signal by coordinate conversion using the correlation with the luminance signal;
  A step of compressing image data composed of luminance color difference signals;
  And a step of outputting the compressed image data together with the color difference signal processing and compression code information relating to the compression processing.

  In the image transmission method of Claim 4,
  The step of compressing the image data includes a step of compressing the image data consisting of the luminance / color difference signal in the horizontal direction for each image data unit block having a predetermined number of pixels, and the image data consisting of the luminance / color difference signal to the predetermined pixel A step of vertically compressing each image data unit block consisting of a number, a step of storing at least one horizontal effective period of the data compressed in the horizontal direction and the data compressed in the vertical direction; Selecting a compression encoding method based on a compression rate of an image data unit block and an index indicating image degradation due to compression processing,
  The information relating to the compression processing includes compression code information relating to the compression.

  The image transmission method according to claim 4 or 5,
  Generating a transmission clock signal synchronized with an uncompressed clock of the image data;
  An image transmission method, wherein the compressed image data is output in synchronization with the generated transmission clock.

  In an image receiving device that receives compressed image data,
  An input unit that receives compressed image data and information related to compression processing of the compressed image data;
  A decompression processing unit that decompresses compressed image data input to the input unit based on information about the compression process input to the input unit;
  Based on the information related to the compression processing input to the input unit, the image data in the luminance color difference format decompressed by the decompression unit is subjected to coordinate conversion using a correlation with a luminance signal, and the image data is An image receiving device comprising: a color difference signal processing unit that outputs a color difference signal.

The image receiving device according to claim 7.
The image receiving apparatus according to claim 1, wherein the decompression processing unit includes a display signal processing unit that changes signal processing for received image data in accordance with compression code information and / or transmission error information for each compressed image data unit block.

  In an image receiving method in an image receiving apparatus that receives compressed image data,
  Receiving compressed image data and information relating to compression processing of the compressed image data;
  Decompressing the received compressed image data based on the received compression processing information;
  Performing coordinate transformation using the correlation with a luminance signal on the decompressed luminance / color difference format image data based on the received information relating to compression processing, and outputting the image data as a color difference signal. An image receiving method characterized by that.

The image receiving method according to claim 9.
The step of decompressing the image data changes the signal processing for the received image data in accordance with the compression code information and / or transmission error information for each compressed image data unit block, based on the received information relating to the compression processing. And an image receiving method.