Method of and apparatus for converting digital data between data

Details Method of and apparatus for converting digital data between data Method of and apparatus for converting digital data between data

1987-04-30

1989-03-28

Roskoski, Bernard

Coded data generation or conversion

Sample and hold

341123, 341132, 341 54, H03M 510

Patent

active

048168297

ABSTRACT:
A method of and apparatus for converting between first and second digital data formats is disclosed whereby digital words of the first format are analyzed to detect an upper bandwidth limit of a corresponding analog signal in an interval thereof defined by such words and to determine the level of the analog signal at the beginning of such interval. A digital word of the second format is encoded with first and second pluralities of bits representing the determined upper bandwidth limit and the level of the corresponding analog signal at the beginning of the interval.

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IBM Technical Disclosure Bulletin, vol. 20, No. 4 (Sep. 1977) "Compression of Silence in Digitized Speech Recording", M. A. Patten.

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