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Low-delay encoding methods of moving pictures

  • US 5,745,180 A
  • Filed: 06/29/1995
  • Issued: 04/28/1998
  • Est. Priority Date: 06/29/1994
  • Status: Expired due to Term
First Claim
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1. A method of low-delay-encoding digital video data for moving pictures, said method comprising the steps of:

  • (a) determining a first row position containing first intra-segments in an image frame and a second row position containing second intra-segments therein, wherein segments in each row are enumerated sequentially across the row and said first intra-segments are odd-numbered and said second intra-segments are even-numbered, each intra-segment having a respectively predetermined size, wherein said first intra-segments are offset by one intra-segment width with respect to said second intra-segments;

    (b) intra-frame-encoding video data contained in the first and second intra-segments among the video data in the image frame, and inter-frame-encoding video data which exists outside of the first and second intra-segments; and

    (c) re-determining said first and second row positions containing, respectively, the first and second intra-segments with respect to the image frame to be used for encoding, by shifting the first row position containing the first intra-segments from the upper end of the screen to the lower end thereof by a predetermined interval, and by shifting the second row position containing the second intra-segments from the lower end of the screen to the upper end thereof by the predetermined interval, whenever the image is changed.

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