Image data encoding method and device, image data reconstructing

Details Image data encoding method and device, image data reconstructing Image data encoding method and device, image data reconstructing

1996-06-19

1997-03-25

Britton, Howard W.

Television

Image signal processing circuitry specific to television

Motion dependent key signal generation or scene change...

348415, 348416, H04N 750, H04N 732

Patent

active

056149603

ABSTRACT:
An encoding unit encodes the received image data in frame units. A code buffer stores the amount of codes per 1 frame. The detection condition setting unit sets a detection condition (a standard value of a code amount difference) specified according to the detection designation data entered externally. A scene determining unit calculates the difference between the amount of codes in the present frame entered from the code buffer and the amount of codes in the previous frame. If the difference is larger than the detection condition (the standard value of the code amount difference), the scene determining unit issues a COS code indicating a scene-changed frame and sets a selection signal in an active state. A switch adds the COS code to the encoded data in the present frame and externally outputs it when the selection signal indicates an active state.

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patent: 5260782 (1993-11-01), Hui
patent: 5267037 (1993-11-01), Sugiyama
Tsuboi et al., System and Device for Picture Data Transfer Reproducing, Patent Abstracts of Japan, vol. 14, No. 584, Abstract Date: Dec. 27, 1990, for Published Application 2254887, Oct. 15, 1990.
K. S. Thyagarajan et al., Image Sequence Coding Listing Interframe VDPCM & Motion Compensation, ICASSP '89, vol. 3, pp. 1858-1861, May 1989.
Kondo, High Efficiency Coding Device, Patent Abstracts of Japan, vol. 14, No. 182, Abstract Date: Dec. 4, 1990, for Published Application 203328, Feb. 2, 1990.

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