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:
Nov. 30, 1993
Filed:
Nov. 27, 1991
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An apparatus for calculating a sum of products of proper elements in matrix, connected to a receiving device (21) for receiving an input vector and having a memory (11, 12) capable of storing data used to determine whether each of the matrix elements is zero or nonzero and storing data representative of contents of the matrix elements having nonzeros, the apparatus being capable of reducing a required capacity of the memory (11, 12) and a number of calculation processes in a linear transformation of the input vector received at the receiving device (21) by using a transformation matrix having matrix elements of a large scale sparse matrix, the transformation matrix being represented in a two-dimensional array and stored in the memory (11, 12), the apparatus includes a determining unit connected to the memory (11, 12) for determining whether each of the matrix elements in the transformation matrix is zero or nonzero in accordance with the zero data or the nonzero data stored in the memory (11, 12), and a calculating unit (1) connected to the receiving device (21), the determining unit (2), the memory (11, 12) and the outputting device (22) respectively for calculating the sum of products of the nonzero data store in the memory (11, 12) with the input vector with respect to each of the matrix elements which is identified as nonzeros by the determining unit (2).