CA2300326A1 - Image data compression, decompression and display device - Google Patents

Image data compression, decompression and display device Download PDF

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Publication number
CA2300326A1
CA2300326A1 CA002300326A CA2300326A CA2300326A1 CA 2300326 A1 CA2300326 A1 CA 2300326A1 CA 002300326 A CA002300326 A CA 002300326A CA 2300326 A CA2300326 A CA 2300326A CA 2300326 A1 CA2300326 A1 CA 2300326A1
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CA
Canada
Prior art keywords
image data
quantization levels
value
prescribed region
minimal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002300326A
Other languages
French (fr)
Other versions
CA2300326C (en
Inventor
Shohei Moriwaki
Yoshifumi Azekawa
Osamu Chiba
Kazuhiro Shimakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renesas Design Corp
Mitsubishi Electric Corp
Original Assignee
Renesas Design Corp
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renesas Design Corp, Mitsubishi Electric Corp filed Critical Renesas Design Corp
Publication of CA2300326A1 publication Critical patent/CA2300326A1/en
Application granted granted Critical
Publication of CA2300326C publication Critical patent/CA2300326C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/005—Statistical coding, e.g. Huffman, run length coding

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

An image data compressing device includes: a maximal value extracting unit and a minimal value extracting unit that respectively extract a maximal value anal a minimal value from pixel values in a prescribed region of image data; a level decision unit that determines quantization levels of the pixel values in the prescribed region based on the maximal and minimal values extracted; and a comparison unit that compares the images data with the quantization levels and outputs quantized data. Since the comparison unit quantizes the pixel value in the prescribed region by comparing the image data with the quantization levels, it is possible to compress the image data with a simple configuration.
CA 2300326 1999-09-17 2000-03-09 Image data compression, decompression and display device Expired - Fee Related CA2300326C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11-263627 1999-09-17
JP26362799A JP2001086500A (en) 1999-09-17 1999-09-17 Image data compressing device, image data extending device, device and method for displaying image using the same

Publications (2)

Publication Number Publication Date
CA2300326A1 true CA2300326A1 (en) 2001-03-17
CA2300326C CA2300326C (en) 2003-02-18

Family

ID=17392152

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2300326 Expired - Fee Related CA2300326C (en) 1999-09-17 2000-03-09 Image data compression, decompression and display device

Country Status (3)

Country Link
JP (1) JP2001086500A (en)
CA (1) CA2300326C (en)
DE (1) DE10021819A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105631905A (en) * 2014-10-29 2016-06-01 新相微电子（开曼）有限公司 Image compression algorithm and image compression control device for TFT-LCD driving IC

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105631905A (en) * 2014-10-29 2016-06-01 新相微电子（开曼）有限公司 Image compression algorithm and image compression control device for TFT-LCD driving IC

Also Published As

Publication number Publication date
CA2300326C (en) 2003-02-18
JP2001086500A (en) 2001-03-30
DE10021819A1 (en) 2001-06-28

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