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:
Jun. 02, 1998
Filed:
Jun. 06, 1995
Applicant:
Inventor:
Ryoji Kubo, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
360 66 ;
Abstract
There is provided an erasing device for erasing the recorded signal in each recording block on a recording medium such as a still video floppy which can individually record the signal into each of the recording blocks. The erasing device comprises: a discriminating circuit to discriminate a recording state of each recording block; an erasing circuit to generate an erasing signal; and a controller to control the erasing circuit in accordance with the result of the discrimination of the discrimination circuit. With this device, a state in which the memory area on the medium is erased can be obtained in a short time using little energy.