JPH0397163A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To realize the detection of the insertion of a disk and the discrimination of the size of the disk with the aid of one sensor and to simplify the constitution of a device by providing the sensor for detecting the insertion of a disk and discriminating the size of a disk and a roller device turning means which changes the feeding direction of the disk. CONSTITUTION:The roller device 5 is turned clockwise around a turning supporting shaft 6 and moved to a position shown by a dotted line by the sensor 13 while holding the disk 7'' or 8''. A stopper 10 is turned around a supporting shaft 12 by interlocking with the turning of the roller device 5 and moved to a position 10'. Therefore, only the CD 7'' exists on the sensor 13 and the single CD 8'' does not exist. As the result, it can be discriminated whether the inserted disk is a CD or a single CD. When it is discriminated to be the single CD, it is supported on a turntable which is situated just under it if it is dropped from the position. When it is discriminated to be the CD, it is fed in an oblique direction by a prescribed quantity with the aid of rotating the roller device 5 again. Thus, the insertion of the disk is detected and the size of the disk is discriminated by one sensor and the constitution of the device is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a disc playback device capable of playing back 12aI compact discs (hereinafter referred to as CD-based discs) and 8aI1 compact discs (hereinafter referred to as CD singles) without an adapter.

BACKGROUND OF THE INVENTION In recent years, compact discs have become widespread. In addition to 12ao discs, 8cm CD singles have also appeared, and are widely used for home use, portable use, and even car use, and are expected to become even more popular.

Initially, CD singles were played using adapters, but due to improvements in operability, more and more CD singles can be played directly without an adapter.

Problem to be Solved by the Invention However, in order to be able to play directly without an adapter, it is necessary to use multiple sensors to determine which size the inserted disc is, and automatically change the insertion amount, positioning, etc. This has the problem of requiring control, complicating the configuration of the equipment, and increasing costs.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a disc playback device that is capable of detecting insertion and determining size with a simple configuration.

Means for Solving the Problems In order to solve the above problems, the disc playback device of the present invention includes a roller device for transporting the inserted disc, and a disc insertion detection and disc size discrimination sensor provided at the back of the disc insertion. and a roller device rotating means for rotating the roller device to change the direction of disk transport.

According to the present invention, with the above-described configuration, it is possible to detect the insertion of a disk and determine its size using a single sensor, thereby greatly simplifying the structure and reducing costs.

Embodiment Hereinafter, a disc reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an external front view of a typical in-vehicle disc playback device, where 1 is the front panel and 2 is a disc insertion slot.

FIG. 2 is a top view of the main body with the top cover removed. In Fig. 2, 3 is a playback pickup drive unit, 4 is a turntable, 5 is a disc transport roller, and 6 is a rotating shaft of the roller device. Transfer direction can be changed.

7 is a CD, 8 is a CD single, and shows the positional relationship at the beginning of insertion. FIG. 3 is a top view of the main parts showing the disc insertion detection state. In FIG. 3, stoppers 9 and 10 restrict the amount of movement of the CD and CD single in the insertion direction. 1l is a support arm of the stopper 10, 12 is a pivot shaft of the support arm 11, and 13 is a disk insertion detection and size discrimination sensor. With this structure, the CD 7 or CD single 8 inserted from the slot 2 is transferred in the insertion direction by the rotation of the disk transfer roller 5, and the insertion is detected by the sensor 13 when it comes into contact with the stopper 9.10. , the rotation of the roller 5 is stopped.

FIG. 4 is a top view of the main part showing the movement of the disk after the sensor 13 detects the insertion of the disk. The roller device, which has stopped rotating due to the sensor 13, rotates clockwise around the rotation support glaze 6 and is indicated by the dotted line. Place the disc 7″ or 8 in the position shown.
The stopper 10 rotates around the spindle 12 in conjunction with the rotation of the roller device and comes to the position 10'.Therefore, only CD7'' is on the sensor 13, and the CD single is detected. 8", so you can determine whether the inserted disc is a CD or a CD single. If it is determined to be a CD single, if you drop the disc from that position, it will be supported on the turntable 4 directly below it. If the disc is determined to be a CD, the roller 5 may be rotated again to transport the disc by a predetermined amount in an oblique direction.

As described above, according to this embodiment, there is an insertion slot into which two types of discs, large and small, can be inserted, a roller device located behind the insertion slot for transferring the inserted disc, and a roller device provided at the back of the disc insertion slot. By providing a sensor and a roller device rotating means for rotating the roller device to change the direction in which the disk is transported, it is possible to perform a disk drive using one sensor. It is possible to detect disk insertion and determine the size of the disk.

In the embodiment, there is only one disk insertion slot, but the invention is not limited to this. Further, the sensor may be of a non-contact type such as a photocell or may be of a mechanical contact type.

Effects of the Invention As described above, the present invention has an insertion slot into which two types of discs, large and small, can be inserted, a roller device located behind the insertion slot for transporting the inserted disc, and a roller device provided at the back of the disc insertion. By providing a disk insertion detection and disk size discrimination sensor and a roller device rotation means for rotating the roller device to change the disk transport direction, it is possible to detect disk insertion and determine the disk size with one sensor, The configuration can be simplified.

[Brief explanation of drawings]

Fig. 1 is an external front view of a general in-vehicle disc playback device, Fig. 2 is a top view showing its internal main parts, Fig. 3 is a top view of main parts showing the disc insertion detection state, and Fig. 4 is a top view of the main parts. FIG. 3 is a top view of main parts showing disc size discrimination. 2...Insertion slot, 4...Turntable, 5...Roller, 7...CD18...
...CD single, 9, 10...Stopper 13...Sensor Kami Hachiro 4゛Daan Tede) V QDV Nkunore 2 Ichigami Iro 4-・Turntez 2 Le 5-... Roller 7-・-CO ε...

Claims (1)

[Claims] An insertion slot into which two types of large and small discs can be inserted, a roller device located behind the insertion slot for transporting the inserted disc, and a disc insertion detection and disc size discrimination sensor located at the back of the disc insertion. 1. A disc reproducing apparatus comprising: roller device rotating means for rotating the roller device to change the direction in which the disc is transported.