Variable length coding method and variable length decoding...

Details Variable length coding method and variable length decoding... Variable length coding method and variable length decoding...

2006-10-06

2008-03-04

Nguyen, Khai M. (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

To or from variable length codes

C341S065000, C375S240220, C375S240230, C382S245000, C382S246000, C382S248000, C382S250000

Reexamination Certificate

active

07339506

ABSTRACT:
An image coding apparatus is provided with a unit operable to scan a two-dimensional array of quantized coefficients into scanned quantized coefficients, the scanning being performed from a low frequency component toward a high frequency component; a unit operable to convert the scanned quantized coefficients into a run value and a level value, the run value indicating the number of continuous quantized coefficients, each having a zero value, and the level value indicating a value of a quantized coefficient having a non-zero value; a unit operable to code the run value; and a unit operable to code the level value, wherein the coding of the run value is performed, from a high frequency component toward a low frequency component, in accordance with information that represents a total number of uncoded quantized coefficients which have not been coded.

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