Block decoding method and apparatus capable of decoding and...

Details Block decoding method and apparatus capable of decoding and... Block decoding method and apparatus capable of decoding and...

2006-12-22

2010-06-15

Ishrat, Sherali (Department: 2624)

Image analysis

Image compression or coding

Transform coding

C382S233000, C382S296000

Reexamination Certificate

active

07738718

ABSTRACT:
A block decoding method and apparatus capable of decoding and outputting data in a longitudinal direction, which scans a compressed datastream and accordingly obtains a start address in the compressed datastream for each MCUR of a decompressed image, such that the apparatus can obtain blocks rotated with 90 degrees by performing a Huffman decoding in a longitudinal direction, a de-zigzag arrangement, an inverse quantization, an IDCT and a rotation. Since the decoding direction is identical to the output direction of a printer, only a desired column of data in the decompressed image is temporarily stored for output and accordingly the required memory size is relatively reduced.

REFERENCES:
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patent: 7643694 (2010-01-01), Srinidhi
patent: 2007/0165955 (2007-07-01), Hwang et al.

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