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:
Oct. 13, 2015
Filed:
Nov. 30, 2009
Martin Raubuch, Baldham, DE;
Martin Raubuch, Baldham, DE;
RACORS GmbH, Baldham, DE;
Abstract
A microprocessor, a method for enhanced precision sum-of-products calculation and a video decoding device are provided, in which at least one general-purpose-register is arranged to provide a number of destination bits to a multiply unit, and a control unit is adapted to provide at least a multiply-high instruction and a multiply-high-and-accumulate instruction to the multiply unit. The multiply unit is arranged to receive at least first and second source operands having an associated number of source bits, a sum of source bits exceeding the number of destination bits, connected to a register-extension cache comprising at least one cache entry arranged to store a number of precision-enhancement bits, and adapted to store a destination portion of a result operand in the general-purpose-register and a precision enhancement portion in the cache entry. The result operand is generated by a multiply-high operation or by a multiply-high-and-accumulate operation, depending on the received instructions.