The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 1995
Filed:
Oct. 22, 1993
Applicant:
Inventors:
Michael J Gormish, Stanford, CA (US);
James D Allen, Castro Valley, CA (US);
Assignees:
Ricoh Corporation, Menlo Park, CA (US);
Ricoh Company Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ; H03M / ;
U.S. Cl.
CPC ...
341107 ; 341 67 ; 341 58 ; 341 94 ; 341106 ;
Abstract
The present invention provides an encoding and decoding apparatus used for the compression and expansion of data. A state machine is provided having a plurality of states. Each state has at least one transition pair. Each element of the transition pair comprises zero or more bits representative of the compact code to be output and the identification of the next state to proceed to. The transition pair reflects an output for a yes and no response associated with the probability of the data to be compacted and whether the data falls within that probability.