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. 19, 1999
Filed:
Oct. 10, 1997
Shumpei Kawasaki, Tokyo, JP;
Eiji Sakakibara, Kodaira, JP;
Kaoru Fukada, Koganei, JP;
Takanaga Yamazaki, Kodaira, JP;
Yasushi Akao, Kokubunji, JP;
Shiro Baba, Kokubunji, JP;
Toshimasa Kihara, Tachikawa, JP;
Keiichi Kurakazu, Tokyo, JP;
Takashi Tsukamoto, Kodaira, JP;
Shigeki Masumura, Kodaira, JP;
Yasuhiro Tawara, Kodaira, JP;
Yugo Kashiwagi, Koganei, JP;
Shuya Fujita, Kodaira, JP;
Katsuhiko Ishida, Koganei, JP;
Noriko Sawa, Tama, JP;
Yoichi Asano, Tokyo, JP;
Hideaki Chaki, Tokorozawa, JP;
Tadahiko Sugawara, Kodaira, JP;
Masahiro Kainaga, Yokohama, JP;
Kouki Noguchi, Kokubunji, JP;
Mitsuru Watabe, Naka-gun, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi VLSI Engineering Corp., Tokyo, JP;
Hitachi Microcomputer System Ltd., Tokyo, JP;
Abstract
A division method and circuit performs a division for signed data by adding or subtracting a divisor to or from the dividend or the partial remainder from the division, according to the sign of the divisor or the dividend and the partial remainder to acquire a new partial remainder. The division is repeated a predetermined number of times in which a quotient bit is acquired according to the sign of the acquired partial remainder or the divisor. The dividend is corrected by subtracting 1, which is the significance of an LSB of the corresponding dividend, from the dividend when the sign of the dividend is negative, and the corrected dividend is used for the division processing.