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:
Dec. 21, 1999
Filed:
Nov. 28, 1997
Dong-Kyun Park, Seoul, KR;
Daewoo Electronics Co., Ltd, , KR;
Abstract
A disk changer includes a round roulette having three receiving planes, three sets of identification throughholes for detecting an identification number of the receiving plane and three sets of start/stop throughholes, therein each of the receiving planes has an elongated hole, a holder chuck, a light source, attached to a bottom surface of the holder chuck, for generating a light beam, a tray for supporting the round roulette and a photo sensor, mounted on top of the tray, for detecting the light beam. In the disk changer, the three sets of identification throughholes and the three sets of start/stop throughholes in the round roulette are formed on the circle path which intersects the centers of the center holes, thereby allowing the disk changer to detect both of the identification signal and the disk loading detection signal by using a photo sensor.