Adaptive coding method

Details Adaptive coding method Adaptive coding method

1998-03-12

2000-06-13

Tokar, Micheal

Coded data generation or conversion

Digital code to digital code converters

To or from code based on probability

341 50, H03M 700

Patent

active

060754710

ABSTRACT:
An adaptive coding method is comprised of: a fourth step (508), (510) for calculating an occurrence frequency of either the more probable symbol (MPS) or the less probable symbol (LPS) with respective to the entered input; a fifth step (511) for comparing an occurrence time accumulated value calculated as the occurrence frequency at the fourth step with a preselected value (threshold value), and for reducing the occurrence time accumulated value by 1/2 in the case that the occurrence time accumulated value reaches the preselected value (threshold value); and a sixth step (513) for defining the more probable symbol (MPS) and the less probable symbol (LPS) in correspondence with a predetermined region on a numerical line with respect to the data signal to thereby output coordinate values on the numerical line as a corded word.

REFERENCES:
patent: 4989000 (1991-01-01), Chevion et al.
patent: 5059976 (1991-10-01), Ono et al.
patent: 5307062 (1994-04-01), Ono et al.
patent: 5357250 (1994-10-01), Healey et al.
patent: 5404140 (1995-04-01), Ono et al.
patent: 5587710 (1996-12-01), Choo et al.

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