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. 09, 1999
Filed:
Sep. 16, 1997
Yoshitsugu Inoue, Tokyo, JP;
Junko Kobara, Tokyo, JP;
Hiroyuki Kawai, Tokyo, JP;
Hiroyasu Negishi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
It is judged that a vertex exists within a view volume when values stored in registers (231 to 236) are all '1'. In other words, whether the vertex exists within or beyond the view volume can be judged by whether the values stored in the registers (231 to 236) are all '1' or not. To meet this requirement, a clip code generation/judgment unit (20) comprises a 6-input AND gate (24) which obtains a logical product of the values stored in the registers (231 to 236) to output a judgment signal (M1). With this configuration, a first step for clipping, i.e., the judgment on whether a primitive exists within or beyond a view volume is implemented in hardware, and thereby the operating speed is improved.