Method of determining a loading status of a disk on a round roul

Details Method of determining a loading status of a disk on a round roul Method of determining a loading status of a disk on a round roul

1997-11-28

1999-05-11

Dinh, Tan

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

369 37, G11B17/22

Patent

active

059035277

ABSTRACT:
A method for determining a loading status of a disk on a round roulette utilizes a pulse signal to control the position of the round roulette. In the method, the pulse signal includes start/end codes, a first and a second identification pulse(ID-1, ID-2) and a disk loading detection pulse(DLDP), wherein the start/stop codes, the ID-1 and ID-2 is used for controlling the position of the round roulette and the DLDP is used for detecting the disk loade on the round roulette. In the inventive disk changer includes a function for detecting whether a disk is adequately loaded on a specific receiving plane of the round roulette or not. This is achieved by comparing a first time period between the falling edge time of an ID-1 and the rising edge time of a DLDP with a second time period between the falling edge time of the DLDP and the rising edge time of an ID-2, thereby allowing the disk changer to check an adequate loading of the disk on a round roulette.

REFERENCES:
patent: 5115419 (1992-05-01), Akiyama et al.
patent: 5270989 (1993-12-01), Kimura
patent: 5293362 (1994-03-01), Sakurai et al.
patent: 5631884 (1997-05-01), Chun
patent: 5740135 (1998-04-01), Nakagawa et al.
patent: 5802022 (1998-09-01), Kim et al.

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