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:
Apr. 16, 1985
Filed:
Oct. 15, 1981
Yoshimune Hagiwara, Kodaira, JP;
Shizuo Sugiyama, Kodaira, JP;
Narimichi Maeda, Tachikawa, JP;
Osamu Yumoto, Kokubunji, JP;
Takashi Akazawa, Kodaira, JP;
Masahito Kobayashi, Yokohama, JP;
Yasuhiro Kita, Hachioji, JP;
Yuzo Kita, Fuchu, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Denshi Kabushiki Kaisha, Tokyo, JP;
Abstract
A signal processor having a wide dynamic range and which can process both data in the fixed point representation and data in the floating point representation by the use of a single floating-point arithmetic circuit is capable of processing digital signals, such as voice signals, at high speed and in real time. In addition, this signal processor is capable of executing data input/output operations with an external circuit in the data format of the fixed point representation and of performing internal operations in the floating point representation format. Further, conversion of an operational result from fixed point representation to floating point representation, and vice versa, can be performed internally in accordance with program instruction.