Method and apparatus for intelligent codec system

Details Method and apparatus for intelligent codec system Method and apparatus for intelligent codec system

1997-05-13

2000-02-22

Tran, Phuoc

Image analysis

Image compression or coding

Transform coding

382236, 382239, 348419, G06K 936, G06K 946

Patent

active

060289651

ABSTRACT:
A system for encoding and decoding data blocks and methods of operating the same result in an encoder that provides intelligent data rate control. The encoder comprises DCT (discrete cosine transformer) resources having a truncate controller configured to receive a truncate signal to truncate the data blocks to provide reduced data blocks. Quantizing resources is coupled to the DCT resources to quantize the reduced data blocks to provide quantized data blocks. Inverse quantizing resources is coupled to the quantizing resources to inverse quantize the quantized data blocks. Frame reconstruction resources is coupled to the inverse quantizing resources to reconstruct previous compressed frames. Motion estimation resources is coupled to the frame reconstruction resources to provide predicted data blocks. Subtraction resources is coupled to the DCT resources and the motion estimation resources to subtract the data blocks and the predicted data blocks. An output data buffer is coupled to the quantizing resources and the inverse quantizing resources configured to provide previous compressed image data in response to an update request while maintaining a particular target data rate to the decoder.

REFERENCES:
patent: 5719962 (1998-02-01), Sugahara et al.
patent: 5832125 (1998-11-01), Reese et al.

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