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:
Jan. 21, 1997
Filed:
Mar. 15, 1995
Applicant:
Inventor:
Yasufumi Yatsuzuka, Kashihara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395750 ; 365226 ; 365227 ; 365228 ;
Abstract
A main power supply is connected to a memory through a diode which is provided in such a manner as to allow the current to flow from the main power supply to the memory. An external power supply terminal is connected to a cathode terminal of the diode. The voltage supervising circuit supervises the level of the voltage of the main power supply by detecting the level of the voltage at the anode terminal of the diode. When the level of the voltage is below a specified level, a CPU retracts a date which is being processed to an external memory in accordance with a signal from the voltage supervising circuit.