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. 30, 2004
Filed:
Oct. 13, 2000
Yusuke Shimizu, Tokyo, JP;
Sega Enterprises, Ltd., , JP;
Abstract
A geometry processor has an image processing device having a matrix computing unit that is connected to a vector bus VB through which coordinate conversion target data is supplied and a matrix bus MB through which coordinate conversion matrix is supplied, and that performs multiplication of the coordinate conversion target data by the coordinate conversion matrix, wherein the processor is provided with a switching unit that supplies a mixture ratio S to the vector bus VB and interpolation computation target data S to the matrix bus MB, and wherein the matrix computing unit performs interpolation computation of the interpolation computation target data S in accordance with the mixture ratio S . According to this invention, the interpolation computation needed for a subdivision surface process and other processes may be performed using the matrix computing unit provided in the geometry processor, normally for the purpose of coordinate conversion. Therefore, it is not necessary to incorporate a dedicated interpolation computing unit in the geometry processor, and the circuit size of the geometry processor may be reduced. Furthermore, the vector product computation may be performed using the matrix computing unit