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:
Apr. 14, 1992
Filed:
Aug. 11, 1989
Applicant:
Inventors:
Philippe G Charles, Brooklyn, NY (US);
Gerald A Fisher, Jr, Croton-on-Hudson, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395700 ; 3642804 ; 3642805 ; 3642606 ; 3642274 ; 364D / ;
Abstract
A method for compressing an LR, LALR, or SLR parsing table into a compact and time-efficient representation which is machine and language independent, and allows access to table entries with a constant number of primitive operations. The primitive operations used: addition, comparison, and vector indexing, are in general very efficiently implemented on most machines, and are the key to the superior time performance of this method over other methods. Transformations are applied to the parsing table prior to compression.