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Image data processing apparatus that automatically sets a data compression rate

  • US 5,661,823 A
  • Filed: 09/24/1993
  • Issued: 08/26/1997
  • Est. Priority Date: 09/29/1989
  • Status: Expired due to Term
First Claim
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1. An image data processing apparatus for converting a taken optical image into digital image data, compressing the digital image data, and recording in a memory, said apparatus comprising:

  • first means for dividing a screen into a plurality of blocks, calculating an activity by digitizing the complexity of an image data of each block and an activity of the entire screen of the image data, determining a code amount of the entire screen by setting data compression rate based on the activity the entire screen, and determining code amount allotted to each block in proportion to the activity calculated for each block, thereby controlling code amount of each block.

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