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. 15, 1992
Filed:
Apr. 14, 1989
Fujitsu Ten Limited, Hyogo, JP;
Abstract
A digital signal processor comprises a code converter which converts an integer coded in a Binary Two's Complement (BTC) code to an integer coded in a Sign Magnitude Binary (SMB) code and/or a code converter which converts the SMB code to the BTC code. An integer coded in the BTC code and stored in an m-bits register is converted to an integer coded in the SMB code and input to an n-bits register, by an EXCLUSIVE OR processing of the bits with the sign bits and by supplementing a logic '1' in the less significant bit next to the least significant bit of the result of the exclusive OR operation. An integer coded in the SMB code and stored in an n-bits register is converted to an integer coded in the BTC code and input to an m-bits register, by an EXCLUSIVE OR processing of m-1 bits of magnitude bits with a sign bit. The code converters have a relatively simple construction, will not output an incorrect result, and are most suitable for processing AC signals.