Coded data generation or conversion – Digital code to digital code converters – Coding by table look-up techniques
Patent
1993-04-30
1995-04-18
Logan, Sharon D.
Coded data generation or conversion
Digital code to digital code converters
Coding by table look-up techniques
341 51, H03M 742
Patent
active
054082340
ABSTRACT:
An improved multi-codebook phase-in coding process for coding electronic data wherein for each received electronic input data, the coding process detects whether that input data exceeds a current coding maximum, then selecting a codebook coding method from one or more codebook coding methods in response to detecting whether that input data exceeds the current coding maximum, and then encoding that input data in accordance to the selected codebook coding method to generate a coded output data. A corresponding codebook indicator is inserted into a generated coded output data stream to indicate which codebook method to use to decode the coded output data. During decoding, the decoding process detects for a decode method indicator associated with each encoded input data, and decodes in accordance to a decode method corresponding to the detected decode method indicator to generate a decoded output data.
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Apple Computer Inc.
Gard V. Randall
Logan Sharon D.
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