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:
Sep. 13, 1994
Filed:
Jun. 26, 1991
David A Epstein, Ossining, NY (US);
Glenn G Gilley, Chapel Hill, NC (US);
Kevin P McAuliffe, Peekskill, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Method and apparatus for use in a digital data processing system that evaluates functional networks. A method operates to assign a unique signature to each input constant of the network, assign a unique signature to each output of a network Function, and to store each of the constants and function outputs along with their assigned signatures. The signatures operate as an access key to the associated stored constants and function outputs, thereby eliminating a requirement to reevaluate a Function if its outputs already exist. A storage element, or Dictionary (20), stores data units, such as input data, intermediate values, and/or pointers to same, each with a unique signature. The storage element, in concert with a Dictionary Controller (18), provides for the deletion of a stored data unit that is associated with a specified signature and the retrieval of a stored data unit that is associated with a specified signature. Preferably, the signatures are generated from a combination of constant and Function attributes and values and are each uniquely encoded by a CRC generator (14).