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. 13, 2006
Filed:
Aug. 31, 2004
Michael Grimm, Villingen-Schwenningen, DE;
Michael Grimm, Villingen-Schwenningen, DE;
Thomson Licensing, Boulogne-Billancourt, FR;
Abstract
A device for reading or writing on optical recording media with disk type recognition capability has an optical scanning device and a focus regulating circuit. The arrangement provides rapid and reliable recognition of the recording medium type inserted into the device. A further inventive aspect provides a corresponding process. These inventive aspects are attained by the disk type recognition capability which includes a mirror signal generator, a threshold value generator, a counter and an evaluation unit. The process is based on the utilization of a mirror-signal value of the device for disk type recognition.