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. 29, 2008
Filed:
Oct. 24, 2005
Satoshi Tsuchiya, Kanagawa, JP;
Kazunori Takagi, Tokyo, JP;
Satoshi Tsuchiya, Kanagawa, JP;
Kazunori Takagi, Tokyo, JP;
Sony Corporation, , JP;
Abstract
According to the present invention, it is intended that the recording can be executed normally even against small vibrations to which a servo error signal detecting circuit cannot respond. A recording apparatus according to the present invention includes an optical head () for receiving a reflected laser beam (LREF) obtained when a laser beam (LIRR) is irradiated on a CD-R (). This recording apparatus further includes a gate circuit () to which an output signal (SRD) of the optical head () is supplied and a level comparing circuit () for comparing a value of an output signal (DTAU) of this gate circuit () with a predetermined reference value (DTH). Upon recording, the gate circuit () is controlled in such a manner that a signal of a predetermined period ts may be outputted from the output signal (SRD) supplied from the optical head () to the gate circuit () as the output signal (DTAU). An output signal (SCMP) of the level comparing circuit () is outputted as a detected result of vibrations of the CD-R () or vibrations of the optical head ().