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. 11, 1989
Filed:
Nov. 04, 1985
Hirotada Ueda, Kokubunji, JP;
Hitoshi Matsushima, Tachikawa, JP;
Yoshimune Hagiwara, Hachioji, JP;
Kenji Kaneko, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A processor comprises first and second operation units, a first program memory which contains first microinstructions for controlling the first operation unit and second microinstructions for controlling at least the second operation units, a second program memory which contains microinstructions for controlling the second operation unit, first control means connected to the first program memory for controlling the first operation unit and the second operation unit, and second control means connected to the second program memory for controlling the second operation unit. In a normal mode, all operation units are under control of the first control means and in a multiprogram mode, the first operation unit is under control of the first control means and the second operation unit is under control of the second control means. These two mode operations are selected in accordance with the microinstructions stored in the first or second program memories.