JP2002245706A - Disk changer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the time necessary for the detection of a loaded disk after a disk exchange in a disk changer which can load a large number of disks on a rotary tray. SOLUTION: A sensor 104d for detecting the presence or absence of a disk is arranged in the vicinity of a disk exchange door 10a. When the disk exchange door 10a is opened, a microcomputer 106 clears disk loading information on a slot in a disk exchangeable region enclosed by radius vectors shown in signs A1 and A2 in Figure. Subsequently, when a rotary tray 101 rotates in the state where the disk exchange door 10a is opened, the microcomputer 106 clears the presence or absence data of the loaded disk of a slot newly moved in the disk exchangeable region by rotation movement of the rotary tray 10. When the slot whose presence or absence data of the loaded disk are cleared passes on the sensor 104d for detecting the presence or absence of a disk, data outputted from the sensor 104d and indicating the presence or absence of the loaded disk on the slot are detected and stored in a RAM 106a.

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 compact discs.

[0002]

2. Description of the Related Art Recently, a CD (Compact Disc) or
A disc changer device capable of managing and operating a plurality of discs such as a DVD (Digital Versatile Disc) has been realized. This disc changer device stores a plurality of discs, and is capable of designating and playing back a specific disc from the stored plurality of discs. In this case, the storage format of the disk is various.
For example, a rotary tray that holds and stores a disk by erecting the disk in accordance with the slot on a rotating disk having a plurality of grooves (hereinafter, referred to as slots) extending radially in the radial direction has been devised. Have been.

[0003] When the disk exchange door of the above-mentioned conventional disk changer device having a rotary tray is opened,
If the disc loading door is closed regardless of whether or not the disc has been replaced, the loaded disc information stored on the rotary tray is automatically cleared. Processing was taking place.

With reference to FIGS. 8 and 9, an operation related to the detection of a loaded disk when the opening / closing operation of the disk replacement door is performed in the above-described conventional disk changer apparatus having a rotary tray will be described.

FIG. 8 is a flow chart for explaining the operation relating to the detection of the loaded disk when the opening / closing operation of the disk replacement door is performed in the conventional disk changer device 800. FIG. FIG. 9B is a diagram schematically showing that the loaded disk presence / absence data is stored in the entire area of the rotary tray 810 when the door 840 is closed. FIG.
FIG. 9 is a diagram schematically showing that all loaded disk presence / absence data in the rotary tray 810 has been cleared when is opened. FIG. 9C is a diagram schematically showing that in the conventional disk changer device 800, immediately after the disk exchange door 840 is closed, the loaded disk presence / absence data on the rotary tray 810 is still cleared. FIG. 9D is a diagram schematically illustrating that the disk presence / absence detection sensor 830 detects all the loaded disk presence / absence data in the rotary tray 810 after the disk replacement door 840 is closed and the rotary tray 810 makes one rotation. is there.

FIG. 9 illustrates only a rotary tray 810 capable of storing 200 disks, a substrate 820 supporting the rotary tray 8, a disk presence / absence detection sensor 830, and a disk replacement door 840. The configuration of the disc changer device is the same as the configuration of the optical disc changer 100 according to the present embodiment described below, except for the installation positions of various sensors (not shown) including the disc presence / absence detection sensor 830 (see FIGS. 1 to 4). The detailed description thereof is omitted (however, corresponding parts in the present embodiment shown in FIGS. 1 to 4 are clearly indicated by parentheses). The number of disks that can be stored in the conventional disk changer device is 150, 20
You can set any number of discs, such as 0 discs.
A rotatable rotary tray (rotary tray 101 shown in FIG. 2) provided in a conventional disc changer device.
See also).

First, as shown in FIG. 9A, when the disc replacement door 840 is closed, the rotary tray 810 is closed.
Is stored in a built-in RAM (not shown).

Next, a control unit (hereinafter, referred to as a microcomputer) provided in the conventional disk changer device 800 determines whether there is a signal to open the disk replacement door 840 by operating the disk replacement door opening / closing key 10c. Monitoring (step S80), the disk replacement door 840
(Step S80; Ye)
s), while opening the disk exchange door 840, the internal RAM
All the loaded disk presence / absence data on the rotary tray 810 stored therein are cleared (step S81). FIG. 9B schematically shows the storage state of the loaded disk presence / absence data in the rotary tray 810.

Next, the microcomputer monitors whether there is a signal to close the disk replacement door 840 (step S82), and if there is a signal to close the disk replacement door 840 (step S82; Ye
s), the disk exchange door 840 is closed. Immediately after the disk exchange door 840 is closed, the loaded disk presence / absence data in the rotary tray 810 remains cleared. FIG. 9C schematically shows the storage state of the loaded disk presence / absence data in the rotary tray 810.

Next, when the disc exchange door 840 is closed, the microcomputer operates the rotary tray 81.
A control signal for detecting the loaded disk on the output tray 0 is output (step S83), and the rotary tray 810 is set to 3
The disk is rotated by 60 degrees, the data on the presence or absence of all the loaded disks in the rotary tray 810 is detected, and stored in the built-in RAM. FIG. 9D schematically shows the storage state of the loaded disk presence / absence data in the rotary tray 810.

Recently, Japanese Patent Application Laid-Open No. Hei 7-320463 discloses a technique in which in a disc changer apparatus capable of loading a plurality of discs, only the loading information of the disc to be replaced is cleared when the disc is replaced. That is, this disc changer device
When the slot number of the slot where the disk is to be exchanged is designated by the user, after the slot is moved to a preset disk exchange position, or when the disk in the designated slot is transported out of the apparatus. After the detection, it has a function of clearing only the loading information of the disc.

[0012]

However, the above-mentioned conventional disk changer apparatus has the following problems. That is, once the disc change door of the conventional disc changer device is opened, all the loaded disc presence / absence data stored up to that point are automatically cleared, and thereafter, regardless of whether the disc has been changed or not, the disc is replaced. Each time the replacement door is closed, a detection process for detecting the presence or absence of all disks on the rotary tray has been performed each time. Therefore, the waiting time from when the disk exchange door is closed (particularly after the disk exchange is performed) to when all the loaded disks are detected is long. In particular, as the number of storage disks increases, the waiting time further increases, making it difficult to perform a smooth and comfortable operation.

Further, in the conventional disk changer apparatus which can clear only the loading information of the disk to be replaced as described in the above-mentioned Japanese Patent Application Laid-Open No. 7-320463 when the disk replacement door is closed, When the disk is replaced without specifying the slot number of the slot to be replaced by the user, it is necessary to detect the presence or absence of all the loaded disks on the rotary tray each time. Therefore, in this case, the waiting time from when the disk replacement door is closed to when the presence or absence of all the loaded disks is detected is long, and improvement in operability has been desired.

An object of the present invention is to reduce the time required for detecting a loaded disk after replacing a disk in a disk changer device capable of loading a large number of disks on a rotary tray.

[0015]

The present invention has the following features in order to solve such a problem. In the following description of the means, a configuration corresponding to the embodiment is shown by parentheses as an example. Reference numerals and the like are reference numerals and the like in the drawings described later.

According to a first aspect of the present invention, a rotatable disk storage unit for storing a plurality of disks on which information is recorded, and the number of disks that can be stored in the disk storage unit are stored in the disk storage unit. A disc holding unit for holding a disc for each disc, a disc exchange unit for exchanging discs with the disc holding unit facing the door, comprising a door that can be opened and closed; An input unit for inputting an opening / closing instruction, a detection unit disposed near the disk exchange unit and detecting the presence or absence of a loaded disk on the disk holding unit; and the detection unit. And a storage unit for storing disk loading information indicating the presence or absence of a loaded disk detected by the input unit, and a door opening instruction is input by the input unit when the door is closed. , Opens the said door, characterized in that said disc loading information of the disc holding portion facing the door and a control means for erasing from the storage unit.

According to the first aspect of the present invention, a rotatable disk storage unit for storing a plurality of disks on which information is recorded, and a plurality of disk storage units corresponding to the number of disks that can be stored in the disk storage unit. A disk holding unit that is provided in the unit and holds a disk one by one, and includes a door that can be opened and closed, and a disk exchange unit that exchanges a disk with the disk holding unit facing the door; An input unit for inputting an instruction to open or close the door, the detection unit is provided near the disk replacement unit, and detects the presence or absence of a loaded disk on the disk holding unit, The storage unit stores disk loading information indicating the presence or absence of a loaded disk detected by the detection unit, and the control unit controls the input unit to open or close the door when the door is closed. When an instruction is input, opens the said door, to erase the disk loading information of the disc holding portion facing the door from the storage unit.

Therefore, when the door is opened, the disc loading information for all the disc holding sections facing the door is erased without erasing the disc loading information for all the disc holding sections, and there is no need to delete. The disc loading information is retained without being erased. Further, since the detection unit is disposed near the disk exchange unit, it is close to the location where the disk holding unit from which the loaded disk information has been deleted is located, and the time required for the disk holding unit to move to the position of the detection unit. Is shortened, and the functionality becomes excellent.

According to a second aspect of the present invention, in the first aspect of the present invention, the control means includes:
When the disk storage unit is rotated by manual operation, the disk loading information of the disk storage unit moved to the position where the door is opened by the rotation is further erased from the storage unit, and the disk storage unit is deleted. Is further moved to the detection section, the disc loading information based on the detection result of the detection section is stored in the storage section.

Therefore, when the disk storage unit is rotated by manual operation while the door is opened, the disk loading information of the disk holding unit moved to the position where the door is opened by the rotation is automatically erased each time. Therefore, it is possible to cope with a change caused by a manual operation. Further, when the disc holding section from which the disc loading information has been erased by the rotational movement of the disc storage section reaches the position of the detecting section, the presence or absence of a disc loaded in the disc holding section is automatically detected. Since the number of disk holding units from which the data has been erased is not increased due to the manual operation, and the latest disk loading information is updated as needed, a disk changer device with higher functionality can be obtained.

According to a third aspect of the present invention, in the second aspect of the invention, when the instruction to close the open door is input by the input unit, the control unit rotates the disk storage unit, The detection unit detects the presence or absence of a loaded disk on the disk holding unit from which the disk loading information has been erased, and updates the disk loading information stored in the storage unit based on the detection result. .

Therefore, when the door is closed, the presence / absence of the loaded disk may be detected only for the disk holding unit from which the disk loading information has been erased. Therefore, the waiting time until the next operation is shifted is reduced, and the operability and convenience are improved.

According to a fourth aspect of the present invention, there is provided a rotatable disk storage unit for storing a plurality of disks on which information is recorded, and the disk storage unit includes a plurality of disks that can be stored in the disk storage unit. A disc holding unit for holding a disc for each disc, a disc exchange unit for exchanging discs with the disc holding unit facing the door, comprising a door that can be opened and closed; An input unit for inputting an opening / closing instruction, wherein the disk changer device is disposed at a distance from the disk exchange unit facing the door, and determines whether or not there is a loaded disk on the disk holding unit. First and second to detect
A storage unit for storing disk loading information indicating the presence or absence of a loaded disk detected by the first or second detection unit; and a door opening instruction by the input unit when the door is closed. Is input, the control unit opens the door and erases the disk loading information of the disk holding unit facing the door from the storage unit.

According to the fourth aspect of the present invention, a rotatable disk storage unit for storing a plurality of disks on which information is recorded, and a plurality of disk storage units corresponding to the number of disks that can be stored in the disk storage unit. A disk holding unit that is provided in the unit and holds a disk one by one, and includes a door that can be opened and closed, and a disk exchange unit that exchanges a disk with the disk holding unit facing the door; An input unit for inputting an instruction to open and close the door, wherein the first and second detection units are arranged separately from each other in the vicinity of the disk exchange unit facing the door. The storage unit detects the presence or absence of a loaded disk on the disk holding unit, and the storage unit stores disk loading information indicating the presence or absence of the loaded disk detected by the first or second detection unit. When a door opening instruction is input by the input unit with the door closed, the control unit opens the door and stores the disk loading information of the disk holding unit facing the door. Erase from department.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the control means includes:
When the disk storage unit is rotated by manual operation, the disk loading information of the disk storage unit moved to the position where the door is opened by the rotation is further erased from the storage unit, and the disk storage unit is deleted. Is further moved to the first or second detection section, and disk loading information based on the detection result of the detection section is stored in the storage section.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, when the instruction to close the open door is input by the input unit, the control unit rotates the disk storage unit. The first or second detection unit detects the presence or absence of a loaded disk on the disk holding unit from which the disk loading information has been erased, and updates the disk loading information stored in the storage unit based on the detection result. It is characterized by doing.

Therefore, according to the present invention, the two detectors are provided in the vicinity of the disk exchange unit so as to be separated from each other, so that the disk storage unit can be manually operated while the door is opened. Regardless of which direction the disc is rotated, the presence or absence of the loaded disc in the disc holding unit from which the disc loaded information has been deleted can be immediately detected, and the detection efficiency of the disc loaded information can be increased.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an optical disc changer 10 to which the present invention is applied will be described in detail with reference to FIGS. The optical disc changer 10 can store 200 discs, but the number of discs that can be stored is not limited to 200, but 100, 1
It is free, such as 50 sheets. Further, in the present embodiment, a description will be given on the assumption that a CD is stored as a disk stored in the optical disk changer 10, but the disk is not limited to a CD and may be a DVD or the like.

FIG. 1 is a diagram showing a front surface of an optical disk changer 10 to which the present invention is applied. As shown in FIG. 1, a disc replacement door 10a, a display device 10b, and operation keys are provided on the front surface of the optical disc changer 10.
A disk exchange door opening / closing key 10c, a reproduction key 10d, a stop key 10e, a rotary tray operation dial 10f, a numeric keypad 10g, and the like are provided.

The disk replacement door 10a is opened and closed by operating a disk replacement door open / close key 10c. Further, a slot in which the disk exchange door 10a is open and the disk can be exchanged, that is, while the disk exchange door 10a is open,
Slots in which the user can check the loaded disk are located in the area sandwiched by the moving diameters indicated by reference numerals A1 and A2 in the figure. Hereinafter, the area sandwiched by the reference signs A1 and A2 in the figure is referred to as a disk interchangeable area.

The disk exchange door 10a is opened and closed by operating a disk exchange door open / close key 10c or the like, and a predetermined number of disks can be exchanged while the disk exchange door 10a is open. Further, as described later, the display device 10
“b” indicates various display data output from the microcomputer 106 (for example, an operation state such as playing or pausing, a slot number located at the center of the disk replacement door 10a, a slot number of a playing disk, and the like).

A reproduction key 10d is used to send a signal to the microcomputer 10 to reproduce data of a disk in a slot designated in advance in response to a key operation by a user.
6 is output. The stop key 10e outputs a signal to the microcomputer 106 to stop the currently executing disc reproduction process in response to a key operation by the user.

The rotary tray operation dial 10f is
In response to a dial operation by the user, a signal for instructing the rotary operation of the rotary tray 101 is output to the microcomputer 106. The numeric keypad 10g outputs, to the microcomputer 106, a slot number in which a disc to be reproduced is loaded, a track number (song number) to be reproduced in each of the discs, and the like in response to a key operation by the user.

FIG. 2 is a top view of a main part showing a schematic configuration of the disk storage section 100 provided in the optical disk changer 10. As shown in FIG.
Are a rotary tray 101, a rotary tray control motor 102, a disk arm 103, a sensor support plate 10
4, the first sensor 104a to the third sensor 104c, and
A disk presence / absence detection sensor 104d and the like are disposed on the upper portion of the substrate 105, and lines indicated by reference numerals in the figure are connected to the microcomputer 106 shown in FIG. 4 and its peripheral circuits.

The rotary tray 101 holds and stores a disk on a rotary plate having 200 slots extending in the radial direction from the center thereof by standing the disk on these slots. 10
5 Installed at the center. Also, the rotary tray 101
Performs a rotation operation by the power supplied from the rotary tray control motor 102.

The rotary tray control motor 102 drives the rotary tray 101 in accordance with a control signal output from the rotary tray control motor driver 110 via a line shown in the figure, and
1 to perform an accurate rotation operation.

The disk arm 103 is connected to a disk arm control motor driver 1 via a line indicated by a reference numeral in FIG.
It operates according to a control signal output from the control signal 11. That is, in response to the control signal, one predetermined disk is pulled out from the rotary tray 101, this disk is set in a reproducing device (not shown), and after the reproduction, the disk is stored again at a predetermined position in the rotary tray 101.

Next, the first sensor 104a to the third sensor 1
04c and the disk presence / absence detection sensor 104d will be described. The sensor group is arranged along the moving radius indicated by reference numeral A3 in the figure near the disk replacement door 10a. Further, the first sensor 104a to the third sensor 10
4c and the disk presence / absence detection sensor 104d operate even when the replacement port 10a is open.
Irrespective of whether it is open or closed, signals PH1 to PH3 to be described later and a disk presence / absence detection signal are constantly output to the microcomputer 106.

First sensor 104a, second sensor 104b
Is on the substrate 105 and the rotary tray 101
Installed at the bottom of the The first sensor 104a and the second sensor 104b detect each storage location (slot) of the disk on the rotary tray 101 and also detect the rotation direction of the rotary tray 101.

First sensor 104a, second sensor 104b
Are located near the left and right sides of the moving radius indicated by reference numeral A3 in the figure, and are installed so that the distances from the rotation center of the rotary tray 101 are different from each other. The installation position of the first sensor 104a and the second sensor 104b is determined by the rotation of the rotary tray 101.
04a from the second sensor 104
The signal PH2 output from b is set so as to be generated with a shift of 1/4 cycle from each other (see FIG. 3).

The first sensor 104a outputs to the microcomputer 106 a signal PH1 due to the rotation of the rotary tray 101 via the line indicated by the reference numeral in the figure.
The second sensor 104b also receives a signal PH2 due to the rotation of the rotary tray 101 via the line indicated by the reference numeral in the figure.
Is output to the microcomputer 106.

The third sensor 104c is provided on the substrate 105 and determines the position of the rotary tray 101. The third sensor 104c generates a gate signal PH3 by the rotation operation of the rotary tray 101, and outputs the gate signal PH3 to the microcomputer 106 via a line shown in the figure.

The disc presence / absence detection sensor 104d is installed on the radially-extending sensor support plate 104 indicated by reference numeral A3 in the figure, and is installed above the rotary tray 101.
The presence or absence of a disk on the rotary tray 101 is detected.

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 in the figure.

Next, the position of the rotary tray 101 and the position of each disk stored in the rotary tray 101 are determined by the respective sensors 104.
The determination method for determining based on the signals output from a to 104d will be described in detail with reference to FIGS.

FIG. 3A shows the first sensor 104a to the third sensor 104a.
FIG. 3B is a timing chart of signals PH1 to PH3 output from the sensor 104c, and FIG.
a, signals PH1 and PH2 output from the second sensor 104b
6 is a timing chart of a disk presence / absence detection signal output by a disk presence / absence detection sensor 104d.

The signal PH1 is a pulse signal output from the first sensor 104a, and the signal PH2 is a signal PH1.
This is a pulse signal output from the second sensor 104b with a delay of １ ／ cycle. The signals PH1 and PH2 are output in accordance with the rotation operation of the rotary tray 101, and are bit signals having only two levels of “High” and “Low”. The signal PH3 is a gate signal output from the third sensor 104c to the microcomputer 106.

Reference numerals C1 to C5 in the drawing indicate count timings at which the microcomputer 106 counts the disk storage locations (slots formed in the rotary tray 101 in advance) in units of one disk. This count timing occurs only when the signals PH1 and PH2 both become "Low".

The count timings indicated by reference numerals C1 to C5 in the drawing exemplify a part of a plurality of count timings generated during an actual operation.

The signal PH3 is output from the rotary tray 1
01 has a unique gate length. For example, the “Low” section of the signal PH3 shown in FIG.
This corresponds to a section having a gate length of three slots formed on the rotary tray 101. That is,
The rotary tray 101 is provided with a plurality of sections in advance, and the number of slots formed in each section is different from each other. The signal PH3 is a signal having a gate length corresponding to the plurality of sections. Thus, the signal PH3 at "L"
By counting the number of the count timings (the number of slots) included in the “ow” section, the position of the rotary tray 101 can be detected.

The phases of the signals PH1 and PH2 are shifted from each other by 1/4 cycle. If the rotation direction of the rotary tray 101 is reversed, the phases are also reversed, and the signals PH1 and PH2 in FIG. Interchange. That is, the signal P
The rotation direction of the rotary tray 101 can be detected from the phases of H1 and PH2.

As shown in FIG. 3B, the disk presence / absence detection sensor 104d outputs a "High" signal as a standard signal for normal output. When the above-described count timing occurs due to the rotation operation of the rotary tray 101, if a disk is stored in the disk storage location on the rotary tray 101 corresponding to the count timing, the disk presence / absence detection sensor 104d continues to output the standard signal. At the same time, the microcomputer 106 stores this information in the RAM 106a.

On the other hand, when the count timing is generated by the rotation of the rotary tray 101 and the disk is not stored in the disk storage location on the rotary tray 101 corresponding to the count timing, the disk presence / absence detection sensor 104d outputs “ One pulse of the Low ”signal is output, and the microcomputer 1
06 stores this information in the RAM 106a.

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

According to FIG. 4, the optical disc changer 1
0 is the microcomputer 106, the RAM 106a,
Input unit 107, display unit 108, disk exchange door opening / closing control motor driver 109, rotary tray control motor driver 110, disk arm control motor driver 11
1, a DSP 112, a pickup unit 113, a load / unload SW 114, a disk exchange door opening / closing control motor 115, and the like.
Display unit 108, pickup unit 113, load /
Each part except the unload SW 114 and the disk exchange door opening / closing control motor 115 is connected by a plurality of buses.

The microcomputer 106 is connected to the first sensor 104a to the third sensor 104 through lines indicated by reference numerals in FIG.
Sensor 104c and disk presence / absence detection sensor 104d
And outputs various kinds of position information for controlling the operation of the rotary tray 101 based on the received signals, and stores the position information in the RAM 106a.

The microcomputer 106 operates to open and close the disk exchange door 10a, rotate the rotary tray 101, and operate the disk arm 103 in response to an operation signal generated by operating various operation keys (see FIG. 1) of the input unit 107. Or the playback processing of a disc set in a playback device (not shown).

When the microcomputer 106 outputs a control signal for opening the disk replacement door 10a to the disk replacement door opening / closing control motor driver 109, the microcomputer 106 receives the control signal A in FIG.
1, the slot number of the slot in the area (disk exchangeable area) sandwiched by the radials shown in A2 is calculated, and the disk exchangeable area in the presence / absence data of the loaded disk for all the slots stored in the RAM 106a is described. Only the data on the presence / absence of the loaded disk for the slot in the box is cleared.

The microcomputer 106 calculates the slot number of the newly moved slot in the disc exchangeable area when the rotary tray 101 is rotated and moved by manual operation while the disc exchange door 10a is being opened. At the same time, the presence / absence data of the loaded disk for this slot is cleared each time.

Further, when the slot in which the loaded disk presence data is cleared while the disk replacement door 10a is open passes through the disk presence / absence detection sensor 104d by manual operation, the microcomputer 106 determines the slot number of the passed slot. And the presence / absence data of the loaded disk for this slot is detected each time and stored in the RAM 106a.

Further, when the disk exchange door 10a is closed, the microcomputer 106 sets the disk exchange door 1
While the disk 0a is being released, the disk presence / absence data for the slot for which the disk presence / absence data has been cleared is immediately detected and stored in the RAM 106a.

The RAM 106a stores a main control program for controlling the optical disc changer 10 and various application programs related to the program, and temporarily stores execution files of these programs and various data generated when the programs are executed. Form a work area to store. In particular, the first sensors 104a-
In addition to storing the position data of each slot output from the third sensor 104c, the disk presence data output from the disk presence detection sensor 104d, and the like, various position data calculated by the microcomputer 106 and the above-described disk exchangeable area are stored. A certain slot number or the like is stored.

The input unit 107 includes a disk exchange door opening / closing key 10c for instructing opening / closing of the disk exchange door 10a, a reproduction key 10d for instructing disk reproduction processing, a stop key 10e for instructing stop of reproduction processing, and rotation of a rotary tray. Rotary tray operation dial 10f for instructing operation,
The slot number where the disc to be played is loaded,
It is provided with various operation keys and operation dials for operating the optical disk changer 10, such as a ten-key 10g for selecting a track number of the disk, and the like.
When these operation keys are operated, an operation signal of each key is output to the microcomputer 106.

The display unit 108 is an LCD (Liquid Crystal).
Display). This display unit 1
08 displays various display information output from the microcomputer 106. For example, the rotary tray 10
The operation mode (rotational movement, disk search, etc.) of the rotation operation 1, the disk replacement door 10a open / closed state, the track number of the disk being reproduced, and the like are displayed.

Disk replacement door open / close control motor driver 1
09 drives a disk exchange door opening / closing control motor 115 for opening and closing the disk exchange door 10a provided on the front surface of the optical disk changer 10 based on the control signal output from the microcomputer 106.

Rotary tray control motor driver 11
0 drives a rotary tray control motor 102 for rotating the rotary tray 101 based on a control signal output from the microcomputer 106.

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

DSP (Digital Signal Processor) 46
Converts encoded digital data output from a pickup unit 113 described later into a microcomputer 106
Converts the data into a data format that can be processed at a high speed and outputs it to the microcomputer 106.

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

The load / unload SW 114 is used to download various TOC data or the like recorded on the disc set in the above-mentioned playback device (not shown), or to release the already-downloaded disc when releasing the disc from the playback device. A signal instructing whether to clear the TOC data or the like is output to the microcomputer 106.

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

Next, the operation of the optical disc changer 10 to which the present invention is applied will be described with reference to FIGS.
FIG. 5 is a flowchart for explaining the operation of the optical disk changer 10 relating to the detection of the loaded disk accompanying the opening and closing of the disk exchange door 10a, and FIG.
In the optical disk changer 10, when the disk exchange door 10a is closed, the rotary tray 101 is closed.
FIG. 6B is a diagram schematically showing that the loaded disk presence / absence data is stored in the entire area of FIG. 6B. FIG. 6B is a schematic view showing the area where the loaded disk presence / absence data is cleared immediately after the disk replacement door 10a is opened. FIG.
FIG. 4C is a diagram schematically illustrating an area where the loaded disk presence / absence data is cleared when the rotary tray 101 rotates while the disk replacement door 10a is opened.

FIG. 6D is a view schematically showing a state in the optical disk changer 10 in which the loaded disk presence / absence data is detected by the disk presence / absence detection sensor 104d while the disk replacement door 10a is opened. FIG. 6E is a diagram schematically showing an area in which the loaded disk presence / absence data remains cleared immediately after the disk replacement door 10a is closed, and FIG. 6F is a diagram showing the disk replacement door 10a. FIG. 4 is a diagram schematically showing that loaded disk presence / absence data is stored in the entire area of the rotary tray 101 after a closed disk is detected and a loaded disk is detected.

First, when the disk exchange door 10a is closed, all the loaded disk presence data on the rotary tray 101 is stored in the RAM 106a, and FIG.
The rotary tray 101 shown in FIG. 1 schematically shows this state.

Next, the microcomputer 106 monitors whether or not a signal to open the disk exchange door 10a is input by the key operation of the disk exchange door open / close key 10c (step S50). When a signal is input (step S50; Yes), RA
Of the loaded disk presence / absence data stored in M106a, slots in the disk exchangeable area (in the area indicated by reference numeral E1 in FIG. 6B) sandwiched by the radials indicated by reference numerals A1 and A2 in the figure. Is cleared (step S51).

Next, the microcomputer 106
Whether or not the rotary tray 101 has been rotated by a manual operation while the disc replacement door 10a is open, that is, whether or not the rotary tray 101 is
For instructing the rotation of the first or the first sensor 104a-
It is determined whether or not there is a signal from the third sensor 104c indicating that the user has pushed the rotary tray 101 with his or her hand and rotated the rotary tray 101 (step S52).

In step S52, the microcomputer 106 determines that the rotary tray 101 has not been rotated by the manual operation (step S52; N).
o), the process proceeds to step S55 and the rotary tray 10
When 1 rotates (step S52; Yes), the presence / absence data of the loaded disk for the slot moved to the disk exchangeable area by the rotation is sequentially cleared (step S52).

For example, in step S52, the rotary tray 101 is rotated by the above manual operation,
The slot on the radial direction indicated by reference numeral A1 in FIG.
Assuming that the disk has moved up to the radius indicated by reference numeral A4 in FIG. 6C, the loaded disk presence / absence data on the slot in the area indicated by reference numeral E2 in FIG. 6C is cleared.

Next, when the slot in which the loaded disk presence / absence data is cleared by the rotation of the rotary tray 101 passes through the disk presence / absence detection sensor 104d, the microcomputer 106 checks the slot output from the disk presence / absence detection sensor 104d. Each time data indicating the presence or absence of the loaded disk is detected,
06a (step S54).

That is, by the above manual operation, step S5
In FIG. 6C, the rotary tray 101 rotates in a direction opposite to the direction in which the rotary tray 101 rotates, and the slot having the moving radius indicated by reference numeral A4 in FIG. Suppose that it moved to the diameter. At this time, the slots in the area obtained by subtracting the area indicated by reference numeral E3 from the area indicated by reference numeral E2 in the figure pass through the disk presence / absence detection sensor 104d,
The loaded disk presence data is detected. As a result, only the loaded disk presence / absence data of the slot in the area indicated by reference numeral E3 in the drawing has been cleared.

Next, the microcomputer 106 determines whether or not a signal to close the disk replacement door 10a has been input by the key operation of the disk replacement door opening / closing key 10c (step S55). If no signal is input (step S55; N
o) The process proceeds to step S52 to continue monitoring whether or not the rotary tray 101 has been rotated by the manual operation.

In step S55, when a signal to close the disk replacement door 10a is input (step S5)
5; Yes), the microcomputer 106 closes the disk replacement door 10a (see FIG. 6E), and moves in the direction indicated by reference numeral B in the figure, that is, from the disk replacement door 10a to the disk presence / absence detection sensor 104d in the shortest time. The rotary tray 101 is rotated and moved in a direction in which the disk can be reached, and the loaded disk presence / absence data is cleared during opening of the disk replacement door 10a (that is, a slot in an area indicated by reference numeral E4 in FIG. 6E). Only for this, the presence or absence of the loaded disc is detected.

As a result, the rotary tray 101
Rotation of the rotary tray 10 is performed only by detecting the loaded disk presence / absence data of the slot in the area indicated by reference numeral E4 in FIG.
1 is stored in the RAM 106a (see FIG. 6F).

As described above, according to the optical disk changer 10 of the present embodiment, the disk presence / absence detection sensor 104d is provided near the disk exchange door 10a, and when the disk exchange door 10a is opened, the disc replacement door 10a is opened.
The disk loading information in the disk exchangeable area indicated by reference symbol E1 in FIG. 11A is cleared, and then the rotary tray 10 is opened with the disk exchange door 10a kept open.
When 1 rotates, the loaded disk presence / absence data for the slot newly moved into the disk available area by the rotation is cleared, and when the loaded disk presence / absence data clears the disk presence / absence detection sensor 104d, Disk presence detection sensor 104
The data output from d and indicating the presence or absence of a loaded disk in that slot is detected and stored in the RAM 106a.

Further, when the disk exchange door 10a is closed,
Only the presence or absence of a loaded disk for the slot that has been cleared is detected, and the detection result is stored in the RAM 106a.

Therefore, when the disk replacement door 10a is opened, all the loaded disk presence / absence data stored so far is not cleared, and only the loaded disk presence / absence data on the slot located in the disk replaceable area is cleared. When the disk replacement door 10a is cleared and the disk replacement door 10a is closed, the detection of the loaded disk is performed only for the slot in which the loaded disk presence / absence data is cleared, so that the detection of the loaded disk presence / absence data after the disk replacement door 10a is closed. The time required for is reduced.

Further, since the disk presence / absence detection sensor 104d for detecting the presence / absence of the loaded disk is provided in the vicinity of the disk exchangeable area, the disk exchange door 10a is provided.
The time required to detect the loaded disk presence / absence data after the is closed can be further reduced.

Further, when the rotary tray 101 is rotated by manual operation while the disc replacement door 10a is opened, when the slot in which the loaded disk presence / absence data is cleared passes through the disk presence / absence detection sensor 104d, the loaded disk on that slot is opened. Is detected each time. Therefore, while the disc replacement door 10a is open, the rotary tray 101 is opened.
Even when is rotated by manual operation, the loaded disk presence / absence data is detected each time and stored in the RAM 106a, which is efficient.

In particular, since the disk presence / absence detection sensor 104d is located near the disk exchangeable area,
Without rotating the rotary tray 101 greatly,
Since the slot in which the loaded disk presence / absence data has been cleared while the disk replacement door 10a is open (this slot is within the disk replaceable area) passes below the disk presence / absence detection sensor 104d, the disk replacement door 10a is open. The slot in which the loaded disk presence / absence data has been cleared is substantially in the above-mentioned disk replaceable area, and the time required to detect the loaded disk presence / absence data after the disk replacement door 10a is closed is further reduced.

The present invention is not limited to the contents of the above embodiment, and can be appropriately changed without departing from the gist of the present invention. For example, in the present embodiment, a CD is assumed as a disc to be loaded into the optical disc changer 10, but the present invention is not limited to this.
VD, CD-R (CD-Recordable), or CD-RW
(CD-ReWritable) and so on.

Further, the number of disks that can be stored in the optical disk changer 10 is not limited to 200,
Rotary tray 101 such as 300 sheets or 400 sheets
And various settings can be made in accordance with the slot arrangement intervals.

Further, as shown in FIG. 7, a disk presence / absence detection sensor 104 is provided near the left and right sides of the disk replacement door 10a.
d and 104e may be provided. With such a configuration, when the slot in which the loaded disk presence / absence data is cleared while the disk replacement door 10a is opened passes under these disk presence / absence detection sensors 104d and 104e, the rotary tray 101 rotates left or right. Thus, the loaded disk presence / absence data is immediately detected, and the detection efficiency of the loaded disk presence / absence data while the disk replacement door 10a is open is improved.

[0093]

According to the first aspect of the present invention, when the door is opened, the disk loading information for the disk holder facing the door is not erased without erasing the disk loading information for all the disk holders. Is erased, and disk loading information that does not need to be erased is retained without being erased. Further, since the detection unit is disposed near the disk replacement unit, the detection unit is located near the position where the disk holding unit from which the loaded disk information has been deleted is located, and the disk holding unit moves to the position of the detection unit. The time is reduced and the functionality is improved.

According to the second aspect of the present invention, when the disk storage unit is rotated by manual operation while the door is opened, the disk loading of the disk holding unit moved to the position where the door is opened by the rotational movement. Since the information is automatically deleted each time, it is possible to cope with a change due to a manual operation. Further, when the disc holding section from which the disc loading information has been erased by the rotational movement of the disc storage section reaches the position of the detecting section, the presence or absence of a disc loaded in the disc holding section is automatically detected. Since the number of disk holding units from which the data has been erased is not increased due to the manual operation, and the latest disk loading information is updated as needed, a disk changer device with higher functionality can be obtained.

According to the third aspect of the present invention, when the door is closed, it is only necessary to detect the presence or absence of the loaded disk only in the disk holding unit from which the disk loading information has been deleted. After that, unnecessary detection processing is not performed, the waiting time before moving to the next operation is reduced, operability,
It will be more convenient.

According to the present invention, two detectors are provided in the vicinity of the disk replacement unit so as to be separated from each other, so that the disk storage unit can be manually operated during opening of the door. Even if the disc is rotated in the direction, the presence or absence of the loaded disc in the disc holding unit from which the disc loaded information has been deleted can be immediately detected, and the detection efficiency of the disc loaded information can be improved.

[Brief description of the drawings]

FIG. 1 is an optical disc changer 10 to which the present invention is applied.
It is a figure which shows the front part.

FIG. 2 is an optical disc changer 10 to which the present invention is applied.
FIG. 3 is a top view of a main part showing a schematic configuration of a disk storage unit 100 provided inside the storage unit.

3A is a timing chart of signals PH1 to PH3 output from a first sensor 104a to a third sensor 104c shown in FIG. 2, and FIG. 3B is a timing chart of the first sensor 104;
a, signals PH1 and PH2 output from the second sensor 104b
3 is a timing chart of a disk presence / absence detection signal output by a disk presence / absence detection sensor 104d shown in FIG.

FIG. 4 is an optical disc changer 10 to which the present invention is applied.
FIG. 3 is a schematic block diagram illustrating an internal circuit of the first embodiment.

FIG. 5 is an optical disc changer 10 to which the present invention is applied.
9 is a flowchart for explaining an operation related to detection of a loaded disk accompanying opening and closing of the disk replacement door 10a.

6A is a view schematically showing that loaded disk presence / absence data is stored in the entire area of the rotary tray 101 when the disk replacement door 10a shown in FIG. 1 is closed, and FIG. FIG. 4C is a diagram schematically showing an area where the loaded disk presence / absence data is cleared immediately after the disk replacement door 10a is opened, and FIG.
FIG. 4D is a diagram schematically illustrating an area in which the loaded disk presence / absence data is cleared when the rotary tray 101 rotates during opening of the disk a. FIG. It is a figure which shows typically a mode that the data is detected by the disk presence / absence detection sensor 104d, (e) is the area | region in which the loading disk presence / absence data is cleared immediately after the disk replacement door 10a is closed. (F) schematically shows that the loaded disk presence / absence data is stored in the entire area of the rotary tray 101 after the disk replacement door 10a is closed and the loaded disk is detected. FIG.

FIG. 7 is an optical disc changer 10 to which the present invention is applied.
FIG. 4 is a main part top view schematically showing a case where disk presence / absence detection sensors 104d and 104e are provided near the left and right sides of a disk replacement door 10a shown in FIG. 1 as a modified example of FIG.

FIG. 8 is a flowchart illustrating an operation related to detection of a loaded disk when the opening / closing operation of the disk replacement door 840 is performed in the conventional disk changer device 800.

FIG. 9 (a) shows a conventional high-speed changer device 8;
At 00, when the disk replacement door 840 is closed,
FIG. 9B is a diagram schematically illustrating that loaded disk presence / absence data is stored in the entire area of the rotary tray 810. FIG. 6B is a diagram schematically illustrating all loaded disk presence / absence data on the rotary tray 810 when the disk replacement door 840 is opened. It is a figure which shows what was done typically, (c)
FIG. 7D is a diagram schematically showing that the loaded disk presence / absence data in the rotary tray 810 is kept cleared immediately after the disk replacement door 840 is closed, and FIG.
Indicates that the disk exchange door 840 is closed and the rotary tray 8 is closed.
After one rotation of the disk 10, the data on the presence / absence of all the loaded disks in the rotary tray 810 is transmitted to the disk presence sensor 8
It is a figure which shows typically that it was detected by No. 30.

[Explanation of symbols]

 Reference Signs List 10 optical disk changer 10a disk exchange door 10b display device 10c disk exchange door open / close key 10d play key 10e stop key 10f rotary tray operation dial 10g numeric keypad 100 disk storage unit 101 rotary tray 102 rotary tray control motor 103 disk arm 104 sensor support plate 104a 1 sensor 104b second sensor 104c third sensor 104d disk presence / absence detection sensor 105 substrate 106 microcomputer 106a RAM 107 input unit 108 display unit 109 disk exchange door opening / closing control motor driver 110 rotary tray control motor driver 111 disk arm control motor driver 112 DSP 113 Pickup unit 114 Load / unload SW 115 Disk replacement door opening control motor

Claims (6)

[Claims] 1. A rotatable disk storage unit for storing a plurality of disks on which information is recorded, and a plurality of disks provided in the disk storage unit by the number of disks that can be stored in the disk storage unit. A disk holding unit for holding each disk, an openable / closable door, a disk exchange unit for exchanging disks with respect to the disk holding unit facing the door, and an input for inputting an instruction to open / close the door A disc changer device comprising: a detection unit disposed near the disc replacement unit and configured to detect the presence or absence of a loaded disc on the disc holding unit; and a loading disc detected by the detection unit. A storage unit for storing disk loading information indicating presence / absence of a door, and when the door is opened by the input unit while the door is closed, the door is opened. Control means for erasing the disk loading information of the disk holding unit facing the door from the storage unit. 2. The control means, wherein the door is open,
When the disk storage unit is rotated by manual operation, the disk loading information of the disk storage unit moved to the position where the door is opened by the rotation is further erased from the storage unit, and the disk storage unit is deleted. 2. The disc changer device according to claim 1, wherein when the disc is further moved to the detection section, disc loading information based on a detection result of the detection section is stored in the storage section. 3. The control means, when an instruction to close the open door is input from the input unit, rotates the disk storage unit to remove the disk loading information from the disk holding unit. 3. The disc changer device according to claim 2, wherein the detection unit detects the presence or absence of a disc, and updates the disc loading information stored in the storage unit based on the detection result. 4. A rotatable disk storage unit for storing a plurality of disks on which information is recorded, and a plurality of disks provided in the disk storage unit by the number of disks that can be stored in the disk storage unit. A disk holding unit for holding each disk, an openable / closable door, a disk exchange unit for exchanging disks with respect to the disk holding unit facing the door, and an input for inputting an instruction to open / close the door And a disk changer device comprising: a first and a second disk changer device, each of which is disposed at a distance from the disk exchange unit facing the door, and detects the presence or absence of a loaded disk on the disk holding unit. 2, a storage unit for storing disk loading information indicating the presence or absence of a loaded disk detected by the first or second detection unit; and Control means for opening the door when the instruction to open the door is input by the input unit, and for erasing the disk loading information of the disk holding unit facing the door from the storage unit. A disc changer device. 5. The control means, wherein the door is open,
When the disk storage unit is rotated by manual operation, the disk loading information of the disk storage unit moved to the position where the door is opened by the rotation is further erased from the storage unit, and the disk storage unit is deleted. 5. The disc changer device according to claim 4, further comprising: when said disc is further moved to said first or second detection section, disc loading information based on a detection result of said detection section is stored in said storage section. 6. The control means, when an instruction to close the open door is input from the input unit, rotates the disk storage unit to remove the disk loading information from the disk holding unit. 6. The disc changer device according to claim 5, wherein the first or second detection section detects the presence or absence of a disc, and updates the disc loading information stored in the storage section based on the detection result. .