Probability estimation table apparatus

Details Probability estimation table apparatus Probability estimation table apparatus

1992-04-08

1994-05-03

Malzahn, David H.

Boots, shoes, and leggings

382 56, G06F 102

Patent

active

053093810

ABSTRACT:
A probability estimation table reading apparatus includes a memory part for storing a probability estimation table, the table defining, for each address value, a switch data value, a probability estimate data value, an LPS data value indicative of a next address when a more probable symbol occurs and an MPS data value indicative of a next address when a less probable symbol occurs, and a control part for reading out each the LPS data value and MPS data value for a current address value of the stored table, so that next address values required by an arithmetic coder to perform arithmetic coding data compression, can be generated. Each of the LPS data value in the stored table stored in the memory part has been replaced by the difference between a current address value and a next address value indicated by a standard LPS data value for the current address value, and each of the MPS data value has been replaced by the difference between the current address value and a next address value indicated by a standard MPS data value for the current address value.

REFERENCES:
patent: 4024385 (1977-05-01), Richards
patent: 4373191 (1983-02-01), Fette et al.
patent: 4831570 (1989-05-01), Abiko
patent: 5025258 (1991-06-01), Duttweiler
M. Mano, "Computer System Architecture", 1982, p. 243, Prentice/Hall International, Inc.
ISO/IEC International Standard of Coded Representation of Picture and Audio Information, Early Draft, WG9-SiR2, Dec. 14, 1990, pp. 1-3, 38-44.

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