Apparatus for changing disk and mechanism for identifying disk

Abstract

The invention is a disc identifying mechanism, arranged in a disc changing device, where the disc changing device at least comprises a tray, having a disc holding groove, and the disc identifying mechanism comprises a judging circuit and a conductor, where the judging circuit has a first contact and a second contact, the two contacts can selectively connect with each other, and as the first contact connects with the second one, the judging circuit outputs a signal; and the conductor has a first end, a salient and a second end, the first end is connected to the first contact, the salient passes through a hatch on the side wall of the disc holding groove into the disc holding groove, the second end extends to the judging circuit and is apart from the second contact by a space. As a disc is put in the disc holding groove, the disc pushes the salient in the disc holding groove to make the second end of the conductor connect with the second contact so that the first contact communicates with the second contact, the judging circuit outputs a signal to express there is a disc in the disc holding groove.

Description

technical field [0001] The present invention relates to a disc changing device, and in particular to a disc judging mechanism of the disc changing device. Background technique [0002] In recent years, optical discs have the advantages of high recording density, long life, small size, low cost, and can not be affected by surface dust when reading, and have become important data storage media. Therefore, optical drives have become the most widely used data reading and writing devices. For the convenience of use, some disc drives are equipped with disc changing devices inside, which can accommodate multiple discs, and only need to press a button to complete the recovery of the disc that has been played and place the disc to be played in the reading position Wait for the complicated work of changing the film. [0003] A conventional optical drive with a disc changing device at least includes a magazine, a drive motor and an optical pickup head. The cassette is arranged in the...

AI Technical Summary

Problems solved by technology

[0004] However, as the number of discs that can be placed in the magazine increases, it often takes quite a long time to confirm whether there is a disc in each tray

In addition, during the reciprocating pulling action, the tray, slide rail, pull tab hook and other related mechanisms will also be worn out, thereby reducing the service life of the film changing mechanism

Furthermore, when the tray carries a small optical disk (such as an 8 cm disk) to read the position, if the small optical disk slides from the opening of the tray into the optical drive, it will not only easily cause damage to the parts on the movement, but also cause Mechanism is stuck or the film cannot be returned

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