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:
Jul. 27, 1993
Filed:
Apr. 19, 1990
Raymond C Robidoux, Derry, NH (US);
Michel M Raguin, Medford, MA (US);
Peili Lin, Malden, MA (US);
Keith S Carvalho, Nashua, NH (US);
Bull HN Information Systems Inc., Billerica, MA (US);
Abstract
Overflow detector connects in parallel with a shifter to receive the bits of an operand to be shifted for detecting an overflow condition by defining the location of the operand sign bit and detecting a predetermined change in operand bit position value. The detector generates a binary value indicating the bit position where the change occurred. This value is then compared with a value designating the number of shifts to be performed on the operand by the shifter. When the number of shifts is greater or equal to the binary value denoting the bit position, the detector signals the presence of an overflow condition.