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. 06, 1999
Filed:
Dec. 18, 1997
Dong-Kyun Park, Seoul, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
A disk roulette controller effectively controls the rotation of a tray roulette employing an electrode contact technique for use in a disk changer. When a user's instruction to search a target dish is received, a drive signal is supplied to a motor, thereby revolving the tray roulette in a predetermined direction. Next, a pulse width modulation (PWM) and a one-shot pulse signal are generated in response to a pulse signal indicating whether or not a scanner electrode contacts an end electrode of the target dish. In response to the PWM signal, the rotation speed of the revolving tray roulette is reduced and, thereafter, in response to the one-shot pulse signal, the tray roulette is stopped at a pickup position.