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:
Jul. 27, 1999
Filed:
Aug. 25, 1997
Akira Mukai, Tokyo, JP;
Norio Masui, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A central processing unit (CPU) (162) furnishes an interrupt request acknowledge signal (107) to an interrupt control unit (ICU) (101) in response to an interrupt request signal (106) from the ICU (101). Then the CPU (102) reads the address specifying the origin of a program to process the interrupt request. After that, the CPU (102) causes the interrupt request acknowledge signal (107) to make a transition to its deactivated state. In response to the transition in the interrupt request acknowledge signal, the ICU (101) causes the interrupt request signal (106) to make a transition to its deactivated state and then clears an interrupt priority level signal (108) showing the priority level of the interrupt request (106).