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:
Mar. 30, 1993
Filed:
Oct. 08, 1991
Jonathan A Scott, Chandlers Ford, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A system is described for producing a near-random hash value from a key value. In a preferred embodiment the system comprises the steps of combining each key byte in turn with a corresponding byte in a predefined table; substituting each key byte with a byte from a second table, the location of the substitute byte in the table being equal to the value of the key byte; and using a propagated exclusive-OR to produce a four-byte value, which is then manipulated and scaled to produce a hash value in the desired range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile