JP3322326B2 - Carousel optical disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carousel type optical disk apparatus, and more particularly to a carousel type compact disk (hereinafter referred to as CD) changer.

[0002]

2. Description of the Related Art As a carousel type optical disk device,
A CD changer having a configuration as shown in the perspective view of FIG. 5 is known. The carousel type CD changer shown in the figure is a five-unit changer having a rotatable turntable 2 and a drawable tray 5, and a CD can be mounted on the turntable 2 board. Nana 5
It has the base disk mounting portions D1 to D5. Further, an optical disk presence / absence sensor 21 is attached to the tip of the arm 20 which is disposed so as to protrude above the turntable 2. The optical disk presence / absence sensor 21 detects the presence / absence of a CD mounted on a disk mounting part located immediately below.

[0003] The operation of this device will be described.
At least one of the disk mounting units D1 to D5 has C
After mounting D, the tray 5 is closed. In a state where the tray 5 is closed, immediately below the optical disk presence / absence sensor 21, there is an intermediate portion between the disk mounting portions D2 and D3 or the disk mounting portion D2. Here, the optical disk presence sensor 21
Starts the rotation of the turntable 2 and sequentially detects whether or not a CD is mounted on each disk mounting portion. At the time when the turntable 2 is rotated and each disk mounting unit moves directly below the optical disk presence / absence sensor 21, the optical disk presence / absence sensor 21 detects whether a CD is mounted on the disk mounting unit. In this way, the rotation of the turntable 2 is continued, and the CDs of all five
The presence or absence of mounting is detected. Continuous reproduction of CDs is performed based on the CD mounting information on each disk mounting section obtained in this manner.

[0004]

However, in the above-described carousel type optical disk apparatus, since the operation of detecting the mounting of the optical disk after the tray is closed is performed by one turn of the turntable, it takes about several seconds. This waiting time was a drawback.

[0005] The present invention has been made to solve such problems and disadvantages of the prior art.
An object of the present invention is to provide a carousel-type optical disk device in which the detection of the mounting of D is performed in a shorter time than before and the waiting time is short.

[0006]

According to the present invention, there is provided a carousel-type optical disk apparatus comprising a rotatable turntable and a drawable tray, wherein the turntable is provided on a board. It has a plurality of disk mounting portions capable of mounting an optical disk, rotates the turntable to move the disk mounting portion on which a desired optical disk is mounted to a predetermined position, and removes the optical disk mounted at the position. In a carousel-type optical disc device that is mounted on a player disposed at
A pair of optical disk presence / absence sensors, wherein the optical disk presence / absence sensor detects the presence / absence of an optical disk on at least two of the disk mounting portions when the tray is pulled out, and differs from the disk mounting portion when the tray is stored. The presence or absence of an optical disk on at least two disk mounting units.

[0007]

In the carousel type optical disk device according to the present invention, two sets of optical disk presence / absence sensors detect the optical disks mounted on at least two disk mounting portions when the tray is pulled out, and when the tray is retracted, the other optical disk presence sensors detect other optical disks. Since the optical disks mounted on at least two disk mounting units are detected, the turntable can be rotated less than before, and the CD mounting of all disk mounting units can be detected in a short time.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, the configuration of the present invention will be described. FIG. 1 is a perspective view of the configuration of an embodiment of a carousel type optical disk apparatus according to the present invention, showing a state where a cover is removed. In FIG. 1, a carousel type optical disc apparatus 1 according to the present invention is a five-unit changer, which has a turnable turntable 2 and a drawable tray 5 having a base 6.
On the turntable 2 board, each CD
, And five disk mounting units D1 to D5. An arm 3 and an arm 4 are disposed substantially at right angles so as to protrude above the turntable 2. A chucking mechanism A for a CD is attached to a tip of the arm 3. Presence sensor C
Is installed. The tray 5 can be pulled out along the base 6 in the longitudinal direction of the arm 3 (in the lower left direction in the figure).

The mounting position of the chucking mechanism A of the CD is such that the disk mounting portion D1 is located immediately below the chucking mechanism A when the tray 5 is stored. The mounting position of the optical disk presence / absence sensor B is such that the disk mounting portion D3 is located immediately below the optical disk presence / absence sensor B when the tray 5 is stored, and the optical disk presence / absence sensor B is located when the tray 5 is pulled out.
Is provided so that the disk mounting portion D2 is located immediately below the disk mounting portion. Further, the mounting position of the optical disk presence / absence sensor C is such that the disk mounting portion D4 is located immediately below the optical disk presence / absence sensor C when the tray 5 is housed, and the optical disk presence / absence sensor C when the tray 5 is pulled out.
Is provided so that the disk mounting portion D5 is located immediately below the disk mounting portion D5. The optical disk presence / absence sensors B and C detect the presence / absence of a CD mounted on the disk mounting part located immediately below.

FIG. 2 is a perspective view of the carousel type optical disk apparatus 1 shown in FIG. 1 in a state where the tray 5 is pulled out. When the tray 5 is pulled out, the disk mounting portions D3 and D4 are exposed, and the CD mounting portions are mounted on both disk mounting portions.
Or replace the CD. To mount a CD on another disk mount, pull out tray 5 further, or
The turntable 2 is rotated to expose another disk mounting portion.

Next, the operation will be described. FIG. 3 is an explanatory view of the operation of the carousel type optical disk apparatus of FIG. 1 when the tray is opened. In the figure, when the tray 5 is pulled out of the cover 7, the disk mounting portion D2 is located immediately below the optical disk presence sensor B, and thus the optical disk presence sensor B mounts the CD of the disk mounting portion D2 in this state. Is detected. Similarly, the disc mounting portion D5 is located immediately below the optical disc presence / absence sensor C, and thus the optical disc presence / absence sensor C is in this state.
Detects the presence or absence of mounting.

Next, when the tray 5 is stored in the cover 7, the disk mounting portion D3 is located immediately below the optical disk presence / absence sensor B as shown in FIG. The presence or absence of the D3 CD is detected. Similarly, the disc mounting portion D4 is located immediately below the optical disc presence / absence sensor C, and thus the optical disc presence / absence sensor C is in this state.
The presence / absence of a CD is detected. In addition, the chucking mechanism A
Is located immediately below the disk mounting portion D1. Therefore, if a CD is mounted on the disk mounting portion D1 in this state, the chucking operation is started by a command from the control portion and reproduced. In this manner, the presence / absence of CD mounting of the four disk mounting units is detected by opening and closing the tray 5 only once. In addition, the rotation of the turntable 2 is 1/5 of one rotation, and the presence / absence of all the CDs D1 to D5 is detected. Therefore, if the tray 5 is closed and the turntable 2 is rotated by 回 転, the detection of the presence or absence of the CD is performed at D1.
.About.D5, which is completed in a short time of 1/5 of the prior art, the apparatus can immediately shift to the reproduction operation of the desired CD, and thus reproduction with a short waiting time becomes possible.

[0013]

As described above, the carousel optical disk device according to the present invention detects the optical disks mounted on at least two disk mounting portions when the tray is pulled out, and further detects the position of the optical disk when the tray is stored. Since there are provided two types of optical disk presence / absence sensors configured to detect CDs mounted on at least two other disk mounting portions as they are, the rotation angle of the turntable can be reduced, and It is possible to detect the mounting of CDs in all disk mounting units. As a result, there is an effect that the detection of the mounting of the CD is performed in a short time, and thus the CD can be reproduced with a short waiting time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a configuration of an embodiment of a carousel type optical disk device according to the present invention.

FIG. 2 is a perspective view of the carousel type optical disc apparatus of FIG. 1 in a used state.

FIG. 3 is an explanatory diagram of an operation of the carousel type optical disk device of FIG. 1 when a tray is opened.

FIG. 4 is an explanatory diagram of the operation of the carousel type optical disk device of FIG. 1 when the tray is stored.

FIG. 5 is a perspective view of a conventional carousel type optical disk device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carousel type optical disk apparatus 2 Turntable 3, 4 Arm 5 Tray 6 Base A, B Optical disk presence / absence sensor C Chucking mechanism D1-D5 Disk mounting part

Claims (1)

(57) [Claims] 1. A drawer comprising a rotatable turntable and a drawer, wherein the turntable has a plurality of disk mounting portions each capable of mounting an optical disk on a board, and rotates the turntable. The carousel type optical disc apparatus for moving the disc mounting section on which a desired optical disc is mounted to a predetermined position and mounting the optical disc mounted at the position on a player disposed at the position to reproduce the information is as follows. A pair of optical disk presence / absence sensors, wherein the optical disk presence / absence sensor detects the presence / absence of an optical disk on at least two of the disk mounting portions when the tray is pulled out, and differs from the disk mounting portion when the tray is stored. A carousel-type optical device characterized by detecting the presence or absence of an optical disk on at least two disk mounting portions. Disk device.