JPH01227257A - Autoloading disk player - Google Patents

Abstract

PURPOSE:To cope with the case of insertion of a smaller disk than an objective size by stopping a disk carrying-in operation when a disk is not detected by a 1st detecting means for detecting the presence of the disk, which is provided in the vicinity of a disk inserting hole, before detecting the completion of carrying the disk into a disk playing position by a 2nd detecting means for detecting the completion of carrying the disk in. CONSTITUTION:An information recording disk 3 inserted from the disk inserting hole 2 is carried in the direction of a center hole of a turntable 8 by carrier rollers 4a and 4b. The presence of this disk 3 is detected by a disk detecting sensor 5 disposed in the vicinity of the inserting hole 2, and its output is inputted into a controller 6. Subsequently, the disk 3 is carried by the rollers 4a and 4b, and an insertion finishing sensor 10 detects that it has been carried into playing position which is the center hole of the table 8, inputting the controller 6. Then, when the sensor 5 does not detect the presence of the disk 3 before the sensor 10 detects the completion of carrying the disk in, the carrying-in operation is stopped, thus preventing the disk 3 from being inconveniently unejectable.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an autoloading disc player;
In particular, the present invention relates to an autoloading disc player of a slot incubator, in which an information recording disc (hereinafter simply referred to as a disc) is loaded (loaded/unloaded) using a conveyance roller.

11. This type of autoloading disc player has a structure in which, for example, a pair of upper and lower transport rollers placed near the disc insertion slot are rotated in the normal direction to transport the disc to the playing position, and then reversed to transport the disc to the disc insertion slot. Generally, the disc size that can be played is limited to one type, and conventional digital audio disc players only play 12cm compact discs (
CD) will be played. However, 12cmC
8CI as a single version for D! IcDs are being introduced into the market, and when this 8cm CD is inserted into the above-mentioned autoloading disc player, there is a possibility that a problem will occur where it will not be possible to eject the disc if it is taken into the player as is.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide an autoloading disc player that can cope with the case where a disc of a smaller size than the target size is inserted.

The autoloading disc player according to the present invention comprises:
Providing a first detection means for detecting the presence or absence of a disc near a transport roller disposed near a disc insertion slot, and a second detection means for detecting completion of carrying the disc to a performance position, When the first detecting means no longer detects the presence of the disk before the second detecting means detects completion of the disk loading, the disk loading operation is stopped.

Support - once Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing an embodiment of an autoloading disc player according to the present invention, and this player has 12
This is a CICD compatible player. In the figure, when a disc 3 is inserted into the disc insertion slot 2 formed on the front panel 1 of the player main body, the disc 3 is moved by a pair of upper and lower transport rollers 4a disposed near the disc insertion slot 2.
4b is taken into the player body by normal rotation. Near the disk insertion slot 2 side of the transport roller 4a, there are signs indicating that the disc 3 has been inserted into the disc insertion slot 2 and ejected.
That is, the first (75) detects the presence or absence of the disk 3.
A disk detection sensor 5 is provided as a detection means, and the output of this disk detection sensor 5 is sent to a controller 6.
is supplied to As the disk detection sensor 5, a non-contact type photo sensor, for example, is used. A pair of conveyance rollers 4a.

4b uses the loading motor 7 as a driving source, and carries the disc 3 into the performance position and takes it out into the disc insertion slot 2 by rotating in opposite directions.

Note that this loading operation is performed by a pair of conveyance rollers 4a,
4b and a rocky structure (not shown).

When the disk 3 carried in by the pair of transport rollers 4a and 4b reaches the center of the turntable 8, the disk 3 is lowered by the action of a rock structure (not shown) and placed on the turntable 8.

This position becomes the performance position, and the disc 3 placed on the turntable 8 is rotationally driven by the spindle motor 9. Note that when the disk 3 descends, at least the lower conveyance roller 4a moves in conjunction with the mechanism and descends to the position shown by the broken line in the figure where the rotation of the disk 3 is not hindered. When the disc 3 arrives at the performance position, the transport completion detection sensor 10, which serves as a second detection means for detecting the completion of transport of the disc 3 to the performance position, is activated by the performance section.

For example, a mechanical switch is used as the carry-in completion detection sensor 10, and its output is supplied to the controller 6.

The controller 6 is composed of a microcomputer consisting of a processor, ROM, RAM, etc., and controls the loading motor via the motor drive circuit 12 in response to the outputs of the disk detection sensor 5 and loading completion detection sensor 10, commands from the operation unit 11, etc. 7, the pair of transport rollers 4a and 4b are driven in forward and reverse directions, that is, the loading operation is controlled. Note that when the disc 3 is at the performance position, the disc detection sensor 5 detects the presence of the disc 3.

Next, the control procedure of the loading operation executed by the processor of the controller 6 will be explained according to the d-chart in FIG. 2.

The processor monitors the insertion of the disk 3 into the disk insertion slot 2 by sensing the output of the disk detection sensor 5 (Step S1), and upon detecting the insertion of the disk 3, causes the pair of transport rollers 4a and 4b to rotate in the normal direction. The motor drive circuit 12 is commanded to start loading the disk 3 (step S2).

In this carrying-in operation, the presence or absence of the disk 3 is monitored by constantly sensing the output of the disk detection sensor 5 (Step S3), and at the same time, the carrying-in completion detection sensor 10
Completion of loading the disk 3 is monitored by sensing the output of (step 84). When the completion of loading of the disc 3 is detected, the motor drive circuit 12 is commanded to stop the conveyance rollers 4a and 4b to complete the loading operation (step 85), and the process then shifts to the performance mode.

Note that when a performance end signal indicating that the performance has ended is supplied from a means not shown, or when a performance stop command is issued from the operation section 11, the processor moves the pair of transport rollers 4
By instructing the motor drive circuit 12 to reverse rotations a and 4b, the disk 3 is ejected by an operation opposite to that described above, and the disk 3 is completely ejected and the disk detection sensor 5 detects the presence of the disk 3. When it runs out, the motor drive circuit 12 is commanded to stop the conveyance rollers 4a, 4b, and the unloading operation is completed. In FIG. 3, the conveyor row 54
a, 4b, the positional relationship between the disc detection sensor 5 and loading completion detection sensor 10 and the disc, the large circle is 12c+aCD, the solid line is the insertion position into the disc insertion slot 2, and the - dotted chain line is the playing position , broken lines indicate the eject positions, respectively.

Next, the case where 8 cic D is inserted into the disc insertion slot 2 will be explained. 8C for disc insertion slot 2
If the ffiCD is inserted biased to the side opposite to the disk detection sensor 5, the disk detection sensor 5 will not detect the insertion of the disk, as shown by the small circle double-dashed line in FIG. 3, and no loading operation will be performed. . On the other hand, 8CIl
When the 1CD is inserted biased toward the disk detection sensor 5 side as shown by the solid line, the disk detection number 5 detects the insertion of the disk, and the loading operation is started in the same way as in the case of a 12 cm CD. In this carrying-in operation, the processor constantly monitors the presence or absence of the disk 3 by sensing the output of the disk detection sensor 5 (step S3), but due to the small size of the disk, the carrying-in completion detection sensor 1o detects that the carrying-in is complete. Since the disk detection sensor 5 no longer detects the presence of the disk before detecting the
It is determined that the CfflCD has been inserted, and the motor drive circuit 12 is commanded to reverse the pair of transport rollers 4a and 4b (Step S6).Then, the passage of a certain period of time is monitored (Step 87), and when the certain period of time has elapsed, the transport roller 4a is , 4b to the motor drive circuit 12 (step S8).
. With this operation, even if the user accidentally inserts the 8 CIvic D, it is possible to prevent a problem such as being unable to eject 1- (export) due to the user taking the 8 CIvic D into the player as it is.

In the above embodiment, the disk is ejected when it is determined that the 8 ClICD has been inserted, but as is clear from FIG. At the position indicated by the dashed line), a portion of the disk still protrudes slightly outward from the curved panel 1, so the loading operation may be simply stopped.

[λ1 standing] As explained above, according to the autoloading disc player of the present invention, the disc detection sensor stops detecting the presence of the disc before the loading completion detection sensor detects the completion of loading the disc when loading the disc. Since the structure is such that the loading operation of the disk is stopped when the loaded disk is loaded, it is possible to prevent a problem such as not being able to eject the loaded disk when a disk of a smaller size than the target size is inserted.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing a control procedure for a loading operation executed by a processor, and FIG. 3 shows a transport roller, a disk detection sensor, a loading completion detection sensor, and a disk. FIG. 3 is a diagram showing the positional relationship between the two, where the large circle shows the case of 12 cm CD, and the small circle shows the case of 8 C1 CD. Explanation of symbols of main parts 2... Disc insertion slot 3... Information recording discs 4a, 4b... Conveyance roller 5... Disc detection sensor 6... ... Controller 7 ... Loading motor 8 ... Turntable 10 ... Loading completion detection sensor Applicant: Pioneer Corporation

Claims (2)

[Claims] (1) Autoloading, which has a transport roller placed near the disc insertion slot, and carries the information recording disc to the performance position by rotating the transport roller in the normal direction, and transports it to the disc insertion slot by rotating the transport roller in the reverse direction. The disc player includes: a first detection means provided near the transport roller to detect the presence or absence of a disc; a second detection means to detect completion of transport of the disc to a playing position; control means for controlling the forward and reverse rotation of the roller, and the control means is configured to detect the presence of the disk when the first detection means detects the presence of the disk before the second detection means detects completion of the transfer. An autoloading disc player characterized in that control is performed to stop normal rotation of the conveyance roller when the detection is no longer performed. (2) The autoloading disc player according to claim 1, wherein the control means controls the transport roller to rotate in the reverse direction after stopping normal rotation of the transport roller.