Coded data generation or conversion – Digital code to digital code converters – To or from variable length codes
Reexamination Certificate
2005-07-19
2005-07-19
Wamsley, Patrick (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from variable length codes
C341S106000
Reexamination Certificate
active
06919828
ABSTRACT:
A mapper-based variable length coding method and decoding method and apparatuses therefor are provided. The mapper-based variable length coding method includes an inputting step for receiving symbol data to be coded and receiving element type information on the kind of symbol data, a coding step for generating a first code number corresponding to the received symbol data, a mapping step for selecting a second code number mapped with respect to selected element type information in mapping tables formed of second code numbers, each of which is appropriately mapped according to the first code number and the element type information, a codeword extracting step for generating a codeword corresponding to the selected second code number, and an outputting step for outputting the generated codeword. According to the methods and apparatuses, the advantages of a universal variable length code table can be maintained while preventing efficiency lowering of compression coding.
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Patent abstracts of japan vol. 2000, No. 04, Aug. 31, 2000 (JP 2000 013794 A (Mitsubishi electric corp.).
Jeon Byeung-woo
Yoo Kook-yeol
Samsung Electronics Co,. Ltd.
Wamsley Patrick
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