JP2003132616A - Disk changer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk changer in which the time necessary for initializing the transport arm part can be shortened. SOLUTION: The disk changer is provided with: a transport position/disk information storage part which correlates the discrimination information of a disk loaded in a slot with a transport position A and stores the resultant correlation information; an inversion position/disk information storage part which correlates disk discrimination information with an inversion position C when a rotating slot move to the inversion position and which stores the resultant correlation information; and a playback position/disk information storage part which correlates the disk discrimination information with a playback position B when the disk is located in the playback position B and which stores the resultant correlation information. In the case that a power failure, etc., occurs and a disk changer 10 is initialized, the disk is promptly transported to the playback position B since the disk position is determined by the storage part. Accordingly, the time necessary for the initialization of the transport arm 103a can be shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc changer device capable of managing and operating a large number of optical discs.

[0002]

2. Description of the Related Art In recent years, a disc changer device capable of managing and operating a plurality of discs such as a CD (Compact Disc) or a DVD (Digital Versatile Disc) has been realized. A large number of discs are stored in the disc changer device, and desired information can be reproduced by selecting a predetermined disc from the stored discs and transporting it to the reproducing section. .

For example, as shown in FIG.
A doughnut-shaped stocker 201, in which a slot for loading each disk is formed and radially accommodates a plurality of disks in a standing state, a driving unit that rotationally drives the stocker 201, a reproducing unit that reproduces the disks, 2. Description of the Related Art There is known a disc changer device provided with a disc transport path 203 and a transport arm 203a for transporting a plurality of discs loaded in slots to a reproducing section. Here, the disc transport path 203 is formed on the stocker from the transport position a in the vicinity of the disc exchange opening of the stocker 201 to the reversal position c that faces the transport position a with the reproduction position b therebetween. ing. The disc is transported in the disc transport path 203 by a transport arm 20 driven by a transport arm motor.
It is supported by 3a and moves.

When reproducing a disc in such a disc changer device, the disc is grasped from the slot in which the disc is loaded, positioned at the conveying position a, and conveyed from the conveying position a to the reproducing position b. Then, the disc located at the reproduction position b is clamped and the clamped disc is focused by the pickup unit to reproduce. After reproduction, the transport path 2
03 and the transfer arm 203a, the disk is transferred from the reproduction position b to the original slot and loaded.

Further, when it is determined that the disc is upside down by focusing on the disc, the stocker 201 is rotated by 180 degrees so that the slot in which the disc is loaded is moved to the position right below the reverse position c. Try to position it. Then, the transfer arm 203
By a, the disc is conveyed from the reproduction position b to the slot located immediately below the reverse position c and loaded. After that, the stocker 201 is rotated by 180 degrees so that the slot in which the disc is loaded is located immediately below the transport position a. Further, the transport arm 203a grips the disc from the slot in which it is loaded, positions it at the transport position a, and transports it from the transport position a to the playback position b. Through the above process, since the disc is located at the reproduction position b with the front and back reversed, it is possible to reproduce the disc with the front and back reversed.

By the way, the disc changer device is
In the event of a power failure or the like, it is necessary to initialize the disc changer device. This initialization must be performed for the entire disc changer device, and the transport arm 2 for transporting the disc.
The 03a part is no exception. The initialization of the transport arm 203a is to transport and clamp the disc to the playback position b in preparation for the subsequent playback operation.

Conventionally, in the disc changer device, the transport arm 203a has been initialized as follows. That is, the disc is at the transport position a.
Disc transfer position switch for determining that the disc is in the reproduction position b, and a disc reversal position switch for determining that the disc is in the reversal position c. In the event of a power outage, etc., the location of the disk is determined only from the switch described above,
The transfer arm 203a was initialized. Hereinafter, in the conventional disc changer device,
The operation of initializing the transfer arm 203a will be described in detail with reference to FIGS.

In FIG. 9, first, the disc transport position determination switch determines whether or not the disc is in the transport position a (step S81), and when the transport position determination switch is ON (step S81; Yes). That is, when the disc is at the transporting position a, the disc is moved in the direction from the transporting position a to the reproducing position b (including the direction from the reproducing position b to the reversal position c, which is hereinafter abbreviated as the loading direction). The transport arm motor is driven so as to transport (step S82). When the disc playback position switch is turned on due to the disc being located at the playback position b (step S83; Ye).
At s), the initialization of the transfer arm portion 203a is completed.

With the disk transfer position switch,
When the disc transport position determination switch is OFF (step S81; No), that is, when the disc is not at the transport position a, it is further determined by the disc playback position switch whether the disc is at the playback position b. When it is determined (step S84) and the disc reproducing position switch is ON (step S84; Yes), that is, when the disc is at the reproducing position b, the initialization of the transport arm 203a is completed.

In step S84, if the disk reproduction position switch is OFF (step S84; N
o), that is, when the disc is not in the reproduction position b, further by the disc reversal position switch,
It is determined whether or not the disc is in the reverse position c (step S
85) and the disc reversal position switch is ON (step S85; Yes), that is, when the disc is at the reversal position c, the disc is moved from the reversal position c to the reproduction position b (hereinafter, referred to as “An”). The transport arm motor is driven to transport in the loading direction (abbreviated as the loading direction) (step S86). When the disc is located at the reproduction position b and the disc reproduction position switch is turned on (step S87; Yes), the initialization of the transport arm 203a is completed.

In step S85, if the disk reversal position switch is OFF (step S85; N
o) That is, if the disc is not in the reverse position c, it is determined that the disc is in an indefinite position at this point, and the transport arm motor is driven so as to transport the disc in the loading direction (step S88). .

In step S88, when the disc is located between the transport position a and the playback position b (state of FIG. 10A), the disc is transported in the loading direction to reach the playback position b. It will be located (state of FIG. 10B). When the disc is located at the reproduction position b and the disc reproduction position switch is turned on (step S89; Yes), the initialization of the transport arm 203a is completed.

In step S88, when the disc is between the reproduction position b and the reversal position c (the state of FIG. 10C), the disc is conveyed in the loading direction to the reversal position c. It will be located (state of FIG. 10D). When the disk is located at the reverse position c and the disk reverse position switch is turned on (step S90; Yes), the transfer arm motor is driven so as to transfer the disk in the unloading direction. (Step S91). Then, when the disc is located at the reproduction position b (state of FIG. 10 (e)), the disc reproduction position switch is turned on.
If the result is N (step S92; Yes), the initialization of the transfer arm 203a is completed.

In step S90, when the disk reversal position switch is OFF (step S90; N
In (o), it is again determined by the disc reproduction position switch whether or not the disc is in the reproduction position b (step S89).

[0015]

That is, in the conventional disc changer device, when the transport arm 203a is initialized in the event of a power failure or the like, the disc transport position switch, the disc playback position switch, If it is determined by the disc reversal position switch that the disc is not in the transport position a, the reproduction position b, or the reversal position c, the disc was transported in the loading direction. That is,
For example, when the disc is between the reproduction position b and the reversal position c (state of FIG. 9C), the disc is once conveyed to the reversal position c and the disc reversal position switch is turned on. , The disc was conveyed in the unloading direction, that is, to the reproduction position b. This takes a long time to transport the disc,
It took time to initialize the transfer arm 203a. Therefore, it takes a lot of time if the initialization work of other parts is combined, and improvement has been conventionally required.

An object of the present invention is to initialize the carrying arm portion by quickly carrying the disc to the playing position by backing up the disc identification information at the carrying position, the playing position, the reversing position and the like. (EN) A disc changer device capable of shortening the time.

[0017]

The invention according to claim 1 is
A plurality of disc loading sections for loading information-recorded discs one by one are provided at a predetermined interval in the circumferential direction, and a stocker rotatable around the center and a stocker provided so as to face the stocker are provided. A transport path for transporting the disk in the radial direction and a transport means for transporting the disk in the transport path, and the transport path is provided at a predetermined position facing the stocker, and a disk is loaded in the stocker. The reversing unit is provided at a position symmetrical to the transport position where the disc taken out from the storage unit is placed, and at a position symmetrical with respect to this transport position with the center of rotation of the stocker interposed, and the loaded disc is loaded into the disc loading unit. A position and a reproduction position provided between the transport position and the reverse position are provided, and when the disk is transported to the reverse position, the stocker In a disc changer device in which the disc loading unit that was in the transporting position is rotated to a reversal position by rolling, the transporting position that stores the disc identification information of the disc loaded in the disc loading unit in association with the transporting position. A disc information storage unit and a reversal position disc information storage unit that stores the disc identification information in association with the reversal position when the disc loading unit is rotationally moved to the reversal position, and the disc is at the reproduction position. In the case where the disc identification information is stored in association with the reproduction position, a reproduction position disc information storage unit, disc conveyance position determination means for determining whether the disc is located at the conveyance position, and the reversal position at the reversal position. Disc reversal position determining means for determining whether or not the disc is positioned, and the disc at the reproduction position. Disc reproducing position determining means for determining whether or not the disc is located, and when the conveying means conveys the disc to a reproducing portion to initialize the conveying means, the discriminating means determines which disc When it is determined that the disc identification information is not located at the position, the disc identification information stored in the transport position disc information storage unit matches the disc identification information stored in the reproduction position disc information storage unit. In this case, it is determined that the disc is located between the transport position and the playback position, the transport means is controlled to transport the disc toward the playback position, and the disc is stored in the reverse position disc information storage unit. Disc identification information,
When the disc identification information stored in the reproduction position disc information storage unit matches, it is determined that the disc is located between the reverse position and the reproduction position, and the disc is conveyed toward the reproduction position. And a control means for controlling the carrying means.

According to a second aspect of the present invention, in the disc changer device according to the first aspect, the control means determines by the disc transport position determination means that the disc is not located at the transport position, and If the disc reversal position determination means determines that the disc is not located at the reversal position, and the disc reproduction position determination means determines that the disc is not located at the reproduction position. At
The disc identification information stored in the transport position disc information storage unit and the disc identification information stored in the reproduction position disc information storage unit do not match, and are stored in the reverse position disc information storage unit. If the disc identification information present and the disc identification information stored in the reproduction position disc information storage unit do not match,
It is characterized in that the disk is carried by the carrying means in a direction from the carrying position to the reversing position.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The disc changer device 10 according to the present embodiment will be described in detail below with reference to FIGS.

First, the structure of the disc changer device 10 will be described. FIG. 1 is a diagram showing a front surface portion of a disc changer device 10 according to the present embodiment. As shown in FIG. 1, on the front face of the disc changer device 10, a disc exchange port 10a, a display device 10b, and as operation keys, a disc exchange port opening / closing key 10c, a play key 10d, a stop key 10e, and a stocker operation dial 10 are provided.
f, a ten-key pad 10g, etc. are provided.

FIG. 2 is a top view of the essential parts showing the schematic construction of the disk housing portion 100 provided in the disk changer device 10. The disk storage unit 100 is a stocker 10
1, stocker control motor 102, disk transport path 10
3, the transfer arm 103a, the sensor support plate 104, the sensors 104a to 104c, and the disk presence / absence detection sensor 104d are provided on the upper portion of the substrate 105, and reference numerals
The line indicated by is the microcomputer 10 shown in FIG.
6 and its peripheral circuits.

As shown in FIG. 2, the stocker 101 is formed in a rotatable donut shape, and the upper surface thereof is
A plurality of slots in which the disks are loaded are radially arranged at equal angular intervals and are mounted in the central portion of the substrate 105. Here, each disc is a DVD (Digital Ve
It may be a double-sided playback disc such as a rsatile disc) or a single-sided playback disc such as a CD (Compact Disc), or a double-sided playback disc and a single-sided playback disc. And may be mixed. Further, the stocker 101 is rotated by the power of the stocker control motor 102.

The stocker control motor 102 is connected to the stocker control motor driver 11 via the line indicated by the reference numeral in the drawing.
The stocker 101 is driven according to the control signal output from 0, and the stocker 101 is caused to perform an accurate rotation operation in the clockwise direction (CW; Clock Wise) or the counterclockwise direction (CCW; Counter Clock Wise).

The disk transport path 103 is connected to the stocker 101.
It is formed on the stocker 101 from a transport position A near the disc exchange port 10a in the above to a reversal position C which faces the transport position A with a reproduction position B in between. As shown in FIG. 3, the disc is a disc transport path 1
03 is supported and moved by a transfer arm 103a driven by a transfer arm motor 103b.

The drive pulley 1 is provided in the disc transport path 103.
03c, a plurality of driven pulleys 103d, which are driven by the drive pulley 103c, and a belt 103d attached to these pulleys. Transfer arm motor 103
b is a stocker for transporting the transport arm 103a suspended on the belt 103d by rotationally driving the drive pulley 61a in accordance with a control signal output from the transport arm control motor driver 111 via the line shown in the figure. Reciprocating motion is performed over substantially the outer diameter of 101. Further, the transfer arm 103a is provided with a mechanism for gripping the disc or releasing the gripped disc.

Further, in the disc transport path 103, a disc transport position determination switch (not shown) for determining whether or not the disc is located at the transport position A, and whether or not the disc is located at the playback position B are displayed. A disc playback position determination switch (not shown) for making a determination and a disc reversal position determination switch (not shown) for determining whether or not the disc is located at the reverse position are provided.

When reproducing a disc, the microcomputer 106 holds the disc from the slot in which the disc is loaded, positions it at the transport position A, and transports it from the transport position A to the playback position B. Then, the disc located at the reproduction position B is clamped, and the clamped disc is focused by the pickup unit 113 to be reproduced. After playback, the disc transport path 1
03 and the transfer arm 103a, the disk is transferred from the reproduction position B to the original slot and loaded.

When it is determined that the front and back sides of the disc are reversed by focusing on the disc, the stocker 101 is rotated 180 degrees so that the slot in which the disc is loaded is moved to the position right below the reverse position C. Try to position it. Then, the transfer arm 103
By a, the disc is conveyed from the reproducing position B to the slot located immediately below the reverse position C and loaded. After that, the stocker 101 is rotated 180 degrees so that the slot in which the disc is loaded is positioned immediately below the transport position A. Further, the transfer arm 103a grips the disk from the slot in which the disk is loaded, positions the disk at the transfer position A, and transfers the disk from the transfer position A to the reproduction position B. Through the above process, since the disc is located at the reproduction position with the front and back reversed, it is possible to reproduce the disc with the front and back reversed.

At this time, the microcomputer 106
In the built-in RAM, the disc identification information of the disc loaded in the slot located immediately below the transport position A is backed up in association with the transport position A. Similarly,
The disc identification information of the disc loaded in the slot located immediately below the reverse position b is backed up in association with the transport position b. Similarly, the disc is at the playback position B.
When it is located at, the disc identification information is associated with the reproduction position B and backed up.

The sensors 104a and 104b are provided on the substrate 105 and installed under the stocker 101. The sensors 104a and 104b detect the slot in which the disc on the stocker 101 is loaded, and also detect the rotation direction of the stocker 101.

The sensors 104a and 104b are the stocker 1
01 are respectively located on two different radials (not shown) radially extending from the central axis of rotation, and the stocker 101
Are installed so that the distance from the center of rotation of each is different. Regarding the installation positions of the sensors 104a and 104b, the pulse signal PH1 output from the sensor 104a and the pulse signal PH2 output from the sensor 104b are generated with a deviation of 1/4 cycle from each other due to the rotation operation of the stocker 101. (See FIG. 3).

The sensor 104a outputs a pulse signal PH1 generated by the rotation operation of the stocker 101 to the microcomputer 106 via the line shown in the figure, and the sensor 104b also rotates the stocker 101 via the line shown in the figure. The pulse signal PH2 according to the operation is output to the microcomputer 106.

The sensor 104c is arranged on the substrate 105 and determines the position of the stocker 101. Sensor 104c
Is the gate signal PH due to the rotation operation of the stocker 101.
3 is generated, and this gate signal PH3 is output to the microcomputer 106 via the line shown by the reference numeral in the figure.

The disk presence / absence detection sensor 104d is installed on the sensor support plate 104 and above the stocker 101, and detects the presence / absence of a disk on the stocker 101.

The disk presence / absence detection sensor 104d outputs a detection signal indicating the presence / absence of a disk to the microcomputer 106 via the line shown by the reference numeral in the figure.

Next, a determination method for determining the position of the slot in the stocker 101, in which the desired disk is loaded, based on the signals output from the sensors 104a to 104d will be described with reference to FIGS. ) Will be described in detail.

FIG. 4A shows the sensors 104a to 104c.
4B is a timing chart of the pulse signals PH1 to PH3 output by the sensors 104a and 104b in FIG.
3 is a timing chart of pulse signals PH1 and PH2 output by the disk and the disk presence / absence detection signal output by the disk presence / absence detection sensor 104d.

PH1 is a pulse signal output from the sensor 104a, and PH2 is a pulse signal output from the sensor 104b with a delay of ¼ cycle from PH1. Both pulse signals PH1 and PH2 are output in accordance with the rotation operation of the stocker 101, and are bit signals having only two types of levels, “High” and “Low”. PH3 is a gate signal output from the sensor 104c to the microcomputer 106.

In the figure, reference numerals C1 to C8 denote disk storage locations (stocker 1
The count timing for counting (pre-formed slots) 01 is shown. This count timing occurs when both the pulse signals PH1 and PH2 are "Low".

The gate signal PH3 has a gate length specific to the stocker 101, and is, for example, as shown in FIG.
The “Low” section of PH3 shown in FIG.
1 corresponds to a section having a gate length corresponding to the five slots. That is, the stocker 101 is provided with a plurality of sections in advance, and the number of slots formed in each section is different from each other.

Therefore, the gate signal PH3 has "Lo".
By counting the number of count timings (number of slots) included in the w "section, the stocker 10
The position of 1 can be detected.

The phases of the pulse signals PH1 and PH2 are deviated from each other by ¼ cycle, and if the rotation direction of the stocker 101 is reversed, this phase is also reversed and the signals of PH1 and PH2 in FIG. 3A are exchanged. . That is, the pulse signal PH
The rotation direction of the stocker 101 can be detected from the phase of 1 and PH2.

As shown in FIG. 4 (b), the disk presence / absence detection sensor 104d uses the "High" signal as a standard signal for normal output. When the count timing is generated by the rotation operation of the stocker 101, if the slot formed in the stocker 101 corresponding to this count timing is loaded with a disc, the disc presence detection sensor 1
04d continues to output the standard signal, and the microcomputer 106 stores this information in its built-in RAM (not shown).

On the other hand, when the count timing is generated by the rotation operation of the stocker 101, if the disc formed in the stocker 101 corresponding to the count timing is not loaded with a disc, the disc presence / absence detection sensor 104d indicates "Low". "One pulse of the signal is output, and the microcomputer 106 outputs the R
Have AM store this information.

Next, the internal circuit of the disc changer device 10 will be described in detail with reference to FIG. FIG. 5 is a schematic block diagram showing an internal circuit of the disc changer device 10.

Referring to FIG. 5, the disc changer device 10 includes a microcomputer 106, an input unit 107,
Display unit 108, disc exchange opening / closing control motor driver 109, stocker control motor driver 110, disc arm control motor driver 111, DSP 112, pickup unit 113, load / unload SW11
4 and a disk exchange opening / closing control motor 115, and includes an input unit 107, a display unit 108, a pickup unit 113, a load / unload SW 114,
Also, the respective units except the disk exchange opening / closing control motor 115 are connected by a plurality of buses.

The microcomputer 106 is connected to the sensors 104a to 104 through lines indicated by reference numerals 1 to 4 in the figure.
c, and signals output from the disk presence / absence detection sensor 104d are received, various position information for controlling the operation of the stocker 101 is calculated based on these received signals, and this position is stored in the internal RAM (not shown). Store information.

Further, the microcomputer 106 opens / closes the disc exchange port 10a, rotates the stocker 101, and disc arm 103 in response to an operation signal generated by operating various operation keys (see FIG. 1) provided in the input section 107.
Control the playback operation of the clamped disc or the like.

The input section 107 includes a disk exchange opening / closing key 10c for instructing opening / closing of the disk exchange opening 10a, a reproduction key 10d for instructing disk reproduction processing, a stop key 10e for instructing stop of the reproduction processing, and rotation of the stocker 101. A stocker operation dial 10f for instructing an operation, position information of a slot in which a disc to be reproduced is loaded, and numeric keypad 1 for selecting track information of the disc.
It is equipped with various operation keys such as 0 g and the like related to the operation of the disc changer device 10 and an operation dial. And
When these operation keys are operated, an operation signal for each key is output to the microcomputer 106.

The display unit 108 is an LCD (Liquid Crystal).
A display device 10b such as a display). This display 1
08 displays various display information output from the microcomputer 106. For example, the operation mode of rotating operation of the stocker 101 (during rotational movement, during disk search, etc.), the opening / closing state of the disk exchange opening 10a, track information of the disk being played back, etc. are displayed.

Disk exchange opening / closing control motor driver 1
Reference numeral 09 drives a disk exchange opening / closing control motor 115 for opening / closing the disk exchange opening 10a provided on the front surface of the disk changer device 10 based on a control signal output from the microcomputer 106.

The stocker control motor driver 110 drives the stocker control motor 102 for rotating the stocker 101 based on the control signal output from the microcomputer 106.

Disk arm control motor driver 111
Drives a disk arm control motor (not shown) that operates the disk arm 103 based on a control signal output from the microcomputer 106.

DSP (Digital Signal Processor) 11
Reference numeral 2 designates the encoded digital data output from the pickup unit 113, which will be described later, as the microcomputer 10
The data is converted at high speed into a data format that can be processed by 6 and output to the microcomputer 106.

The pickup unit 113 extracts and amplifies various TOC information and digital music data recorded in advance on a disc set in the reproducing device (not shown), and outputs the amplified data to the DSP 112.

The load / unload SW 114 downloads various TOC information recorded on the disc set in the reproducing device (not shown) or downloads the disc from the reproducing device, and downloads the TOC information. A signal instructing whether to clear the TOC information or the like is output to the microcomputer 106.

The disc changer device 10 can be connected to an external recording device. In this case, the microcomputer 106 can output the reproduction data from the disc to the connected external recording device and record it on a predetermined recording medium provided in the external recording device.

The operation of initializing the transfer arm portion in the disc changer device 10 will be described in detail below with reference to FIGS. 6 and 7.

As shown in FIG. 6, first, the disc is moved to the transport position A by the disc transport position A determination switch.
Is determined (step S51), and the conveyance position A determination switch is ON (step S51; Ye).
s), that is, when the disc is at the transport position A, the disc is moved from the transport position A to the reproduction position B (including the direction from the reproduction position B to the reversal position C,
Hereinafter, the transport arm motor is driven to transport in the loading direction (abbreviated as the loading direction) (step S52). And
When the disc reproduction position B switch is turned on due to the disc being located at the reproduction position B (step S53; Yes), the initialization of the transport arm portion is completed.

When the disc transport position A switch is OFF by the disc transport position A switch (step S51; No), that is, when the disc is not at the transport position A, the disc playback position B switch is further added. Determines whether the disc is at the reproduction position B (step S54), and when the disc reproduction position B switch is ON (step S54; Ye).
s), that is, when the disc is at the reproduction position B, the initialization of the transport arm portion is completed.

In step S54, if the disc reproduction position B switch is OFF (step S54; N).
o) That is, when the disc is not at the reproduction position B, it is further determined by the disc reversal position C switch whether or not the disc is at the reversal position C (step S55), and the disc reversal position C switch is operated. Is ON
In the case of (step S55; Yes), that is, when the disc is at the reversal position C, the disc is conveyed so as to be conveyed in the direction from the reproduction position B to the reversal position C (hereinafter abbreviated as the unloading direction). The arm motor is driven (step S56). Then, when the disc is located at the reproduction position B and the disc reproduction position B switch is turned on (step S57; Yes).
Then, the initialization of the transfer arm portion is completed.

In step S55, when the disk reversal position C switch is OFF (step S55; N
o), that is, if the disc is not in the reverse position C, the DN that was last played back is backed up.
o. And D of transport position A, which is also backed up
No. And it is determined whether they match (step S5).
8). If they match (step S58; Yes, FIG. 7)
In the state (a)), since it is determined that the disc is located between the transport position A and the reproduction position B, the transport arm motor is driven to transport the disc in the loading direction (step S59). When the disc is positioned at the reproduction position B (state of FIG. 7B) and the disc reproduction position B switch is turned on (step S60; Yes), the initialization of the transport arm portion is completed. To do.

In step S58, the DNo. And the DNo. And do not match (step S58; No), it means that the DNo. And the DNo. When,
Is determined (step S61). If they match (step S61; Yes, state of FIG. 7C), it is determined that the disc is located between the reproduction position B and the reversal position C. Therefore, the disc should be conveyed in the unloading direction. Then, the transport arm motor is driven (step S62). Then, the disc is at the playback position B.
When the disk reproduction position B switch is turned on (step S63; Yes) by locating at position (state of FIG. 7 (d)), initialization of the transport arm portion is completed.

In step S61, the DNo. And the DNo. , And are not matched (step S61; No), it is determined that the disc is in an indefinite position at this time point, and the transport arm motor is driven so as to transport the disc in the loading direction (step S64).

In step S64, when the disc is located between the transport position A and the playback position B, the disc is transported to the loading direction and thus is positioned at the playback position B. When the disc is located at the reproduction position B and the disc reproduction position B switch is turned on (step S65; Yes).
At s), the initialization of the transfer arm portion is completed.

If the disc is located between the reproduction position B and the reversal position C in step S64, the disc is moved to the reversal position C by being conveyed in the loading direction. When the disk is located at the reverse position C and the disk reverse position C switch is turned on (step S66; Yes).
First, the transport arm motor is driven to transport the disc in the unloading direction (step S6).
7). When the disc is positioned at the reproduction position B and the disc reproduction position B switch is turned on (step S68; Yes), the initialization of the transport arm portion is completed.

In step S66, if the disk reversal position C switch is OFF (step S66; N).
In (o), it is again determined by the disc reproduction position B switch whether or not the disc is in the reproduction position B (step S65).

As described above, according to the disc changer device 10 of the present embodiment, the following effects can be obtained.

In the disc changer device 10, the transport position disc information storage unit disc identification information of the disc loaded in the slot, that is, DNo. Is stored, that is, backed up, in association with the transport position A. Further, when the slot is rotationally moved to the reverse position C by the reverse position disc information storage unit, the DNo. Is associated with the reverse position C and backed up. Furthermore, when the disc is located at the reproduction position B, the DNo. Is backed up in association with the reproduction position B.

Then, the DNo. And the DNo. If and match, it is determined that the disc is located between the transport position A and the reproduction position B. Therefore, the microcomputer 106
Drives the transport arm motor to transport the disc in the loading direction.

Then, the DNo. And the DNo. If and match, it is determined that the disc is located between the reproduction position B and the reversal position C. Therefore, the microcomputer 106
Drives the transport arm motor to transport the disc in the unloading direction. That is, in the case of initializing the transfer arm portion in the case of a power failure or the like, the disk is positioned between the transfer position A and the reproduction position B and the position between the reproduction position B and the reversal position C. In both cases, the disc is immediately transported directly to the reproduction position B. Therefore, it is possible to shorten the time required to initialize the transfer arm portion.

The DNo. And the DNo. Stored in association with the transport position A. , And DNo. Stored in correspondence with the reproduction position B are not stored. And the DNo. Stored in association with the inversion position C. If and do not match, the disc is transported in the direction from the transport position A to the reverse position C. Then, the disc reversal position C switch is operated to convey the disc to the reproducing position B, etc., so that the disc is surely conveyed toward the reproducing position B in any case.

The present invention is not limited to the contents of this embodiment, and can be modified as appropriate without departing from the spirit of the present invention. For example, in the present embodiment, a music CD is assumed as a disc to be loaded into the disc changer device 10, but the present invention is not limited to this, and a DVD, a CD-R (CD-Recordable), or a CD-RW (CD -ReWritable) is also applicable. Of course, the number of disks stored in the stocker 101 is not particularly limited.

[0074]

According to the first aspect of the present invention, when the disk is positioned between the transfer position and the reproduction position when the transfer means is initialized when a power failure or the like occurs, In both the case where the disc is located between the position and the reverse position, the disc is directly conveyed to the reproduction position immediately. Therefore, it is possible to shorten the time required for the initialization of the conveying means portion.

According to the second aspect of the present invention, it is possible to obtain the same effect as that of the first aspect of the invention, and of course, the disc identification information stored in association with the reproduction position and the transport Disc identification information stored in association with the position does not match, and disc identification information stored in association with the playback position and disc stored in association with the reverse position If the identification information does not match, the disc is transported in the direction from the transport position to the reverse position. And
In any case, the disc is reliably conveyed toward the reproduction position by operating the disc reversal position switch to convey the disc to the reproduction position.

[Brief description of drawings]

FIG. 1 is a diagram showing a front surface portion of a disc changer device in the present embodiment.

FIG. 2 is a diagram showing a disc storage portion of the disc changer device according to the present embodiment.

FIG. 3 is a cross-sectional view (X- in (a)) showing the disc transport path of the disc changer device according to the present embodiment.
X section).

FIG. 4A shows a pulse signal PH1 output from a sensor.
6B is a timing chart of PH3, and FIG. 6B is a timing chart of the pulse signals PH1 and PH2 output by and the disk presence / absence detection signal output by the disk presence / absence detection sensor.

FIG. 5 is a schematic block diagram showing an internal circuit of the disc changer device in the present embodiment.

FIG. 6 is a flowchart for explaining an operation when the transfer arm portion is initialized in the disc changer device according to the present embodiment.

FIG. 7 is a diagram schematically showing an operation when the transfer arm portion is initialized in the disc changer device according to the present embodiment.

FIG. 8 shows a conventional disc changer device,
(A) is a figure which shows a disk storage part, (b) is sectional drawing which shows a disk conveyance path (Y-Y cross section in (a)).
Is.

FIG. 9 is a flow chart for explaining the operation when initializing the transfer arm portion in the conventional disc changer device.

FIG. 10 shows a conventional disc changer device.
It is a figure which shows typically operation | movement at the time of initializing a conveyance arm part.

[Explanation of symbols]

10 Disc changer device 10a Disk exchange port 10b display device 10c Disk exchange opening / closing key 10d playback key 10e Stop key 10f Stocker operation dial 10g numeric keypad 100 disk storage 101 Stocker 102 Stocker control motor 103 Disc transport path (transport path) 103a transfer arm (transfer means) 103b Transfer arm motor (transfer means) 103c Drive pulley (conveying means) 103d Driven pulley (conveying means) 104 sensor support plate 104a to 104c sensors 104d disk presence detection sensor 105 substrate 106 Microcomputer 107 Input section 108 display 109 Disk exchange opening / closing control motor driver 110 Stocker control motor driver 111 Disk arm control motor driver 112 DSP 113 pickup unit 114 load / unload SW 115 Disk exchange opening / closing control motor

Claims (2)

[Claims] 1. A plurality of disc loading portions for loading information-recorded discs one by one at a predetermined interval in the circumferential direction, and a stocker rotatable around the center and a stocker facing the stocker. A transport path for transporting the disk in the radial direction of the stocker, and a transport means for transporting the disk in the transport path, and the transport path is provided at a predetermined position facing the stocker. , The disk is loaded at the transportation position where the disk taken out from the disk loading section of the stocker is placed and at a symmetrical position with respect to this transportation position with the center of rotation of the stocker interposed therebetween. A reversing position to be loaded into the unit, and a reproducing position provided between the conveying position and the reversing position, and when the disc is conveyed to the reversing position, In a disc changer device in which the disc loading unit that was in the transport position is rotated to the reverse position by rotating the storage unit, the disc identification information of the disc loaded in the disc loading unit is stored in association with the transport position. A transport position disc information storage unit, a reversal position disc information storage unit that stores the disc identification information in association with the reversal position when the disc loading unit is rotationally moved to the reversal position, and the disc is reproduced. A reproduction position disc information storage unit that stores disc identification information in association with the reproduction position when the disc is located at a position, a disc conveyance position determination unit that determines whether the disc is located at the conveyance position, and Disc reversal position determination means for determining whether or not the disc is located at the reversal position, Disc playback position determining means for determining whether or not the disc is located at the raw position, and each of the determining means for transporting the disc to the playback portion by the transporting device and performing initialization of the transporting device. Disc identification information stored in the transport position disc information storage unit and disc identification information stored in the playback position disc information storage unit when it is determined that the disc is not located at any position. If the information matches,
The disc stored in the reversal position disc information storage unit when it is determined that the disc is located between the transport position and the playback position, and the transport means is controlled to transport the disc toward the playback position. When the identification information and the disc identification information stored in the reproduction position disc information storage unit match,
A disc changer comprising: a control unit that determines that the disc is located between the reversal position and the reproduction position, and controls the conveyance unit to convey the disc toward the reproduction position. apparatus. 2. The disc changer apparatus according to claim 1, wherein the control unit determines that the disc is not located at the transport position by the disc transport position determination unit, and determines the disc reversal position. In the case where it is determined by the means that the disc is not located at the reversal position and the disc playback position determination means determines that the disc is not located at the playback position, the transport position disc Disc identification information stored in the information storage unit does not match disc identification information stored in the reproduction position disc information storage unit, and disc identification stored in the reversal position disc information storage unit The information and the disc identification information stored in the playback position disc information storage unit match. The disc changer device, when not present, conveys the disc by the conveying means in a direction from the conveying position to the reversing position.