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. 12, 1994
Filed:
May. 12, 1992
Akira Matsueda, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
This optical record reproducing apparatus automatically controls the light amount of a reproducing light source and comprises a switching device switching on/off the control of a reproducing light source driving electric current by an automatic light amount controlling device to prevent the fluctuation of the emitted light amount of the reproducing light source during the operation of reading the data out of an optical recording medium and switching off the control of the reproducing light source driving electric current at least during an operation of reading out the information recorded in the optical recording medium and a holding device holding the light source driving electric current just before switching off the control of the reproducing light source driving electric current by the automatic light amount controlling device by this switching device.