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.

Date of Patent:
Aug. 13, 2002

Filed:

Aug. 28, 1997
Applicant:
Inventors:

Yasuhiro Nakatsuka, Tohkai-mura, JP;

Shigeru Matsuo, Hitachinaka, JP;

Jun Satoh, Musashino, JP;

Masanori Miyoshi, Hitachi, JP;

Koyo Katsura, Hitachiohta, JP;

Takashi Sone, Tokyo, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06T 1/550 ; G06T 1/560 ; G06T 1/500 ; G06T 1/00 ;
U.S. Cl.
CPC ...
G06T 1/550 ; G06T 1/560 ; G06T 1/500 ; G06T 1/00 ;
Abstract

In a data processor and a shading apparatus used in the data processor, the data processor selects an address based on the information of a memory or a translation look-aside buffer. Therefore, even when the same data are accessed, a different address at high speed is adopted according to the hardware, object to be processed, processing, etc. A plurality of geometric vectors are given as the parameters for the vertexes of a picture, the vectors are interpolated in the picture, and the luminance of each small area in the figure is calculated using the vectors generated by the interpolation. Therefore, a spotlight or highlight can be expressed with high accuracy and at high speed even when the amount of the hardware and the extent of the picture are small.


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