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:
Feb. 20, 2001
Filed:
Nov. 19, 1999
Kazuhiro Kiyoura, Kawagoe, JP;
Toshiyuki Suzuki, Tendo, JP;
Takeshi Matsumoto, Kawagoe, JP;
Hiroshi Kitagawa, Kawagoe, JP;
Takehiro Takada, Kawagoe, JP;
Kazunori Saitoh, Tendo, JP;
Other;
Abstract
A gain controlling apparatus is provided with: an adjusting device (,) for adjusting a gain of a generation signal, which is generated on the basis of a light reception signal obtained by receiving a reflection light of a light beam from an information recording medium (,); and a detecting device (,) for detecting whether or not the generation signal is generated and outputting a detection signal when the generation signal is generated. The gain controlling apparatus is also provided with a controlling device (,) for controlling the adjusting device to increase the gain by a predetermined value set in advance when the detection signal is not outputted by the detecting device.