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. 03, 1998
Filed:
Nov. 18, 1994
Applicant:
Inventors:
James N Dieffenderfer, Apex, NC (US);
Harry I Linzer, Raleigh, NC (US);
Thomas Andrew Sartorius, Raleigh, NC (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395606 ; 341 55 ;
Abstract
A method and apparatus for detecting the null byte at the end of a character string. The method and apparatus first logically concatenates two 32-bit input values into a single 64 bit value. Next, the 64-bit value is divided into 8 bytes. Then, a logical OR operation is performed on each byte and the results are put into an encoder. Finally, the encoder interprets the results of the OR operations and places output values into processor registers which indicate whether or where a null byte was detected.