JP3005542B2 - Disk recording or reproducing apparatus and control method for the apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an autochanger type disk recording or reproducing apparatus for accommodating a plurality of recording medium disks and recording or reproducing a desired disk, and a control method therefor.

[0002]

2. Description of the Related Art There have been proposed various types of autochanger type recording or reproducing apparatuses for storing a plurality of disks upright and recording or reproducing a desired disk. Applicant has also previously proposed the device shown in FIGS.
(See JP-A-6-195842). This is the chassis
(2) A cylindrical magazine (3) capable of accommodating a plurality of discs D is rotatably provided on the disc, and a disc loading / unloading section (4) is provided outside the rotation transition path of the magazine (3) to record or reproduce. Department
(7) are arranged apart from each other. The magazine (3) has 24 disc holding grooves (3
1) (31) is formed radially, and in each holding groove (31),
Identification numbers from No. 1 to No. 24 are given in a counterclockwise direction. The front panel (2
0), a processor (200) is connected to the processor (20).
0) has a memory function and stores the identification number of each holding groove (31).

As shown in FIG. 12, an annular tooth surface (320) is formed on the lower surface of the magazine (3), and a motor (M1) for driving the magazine (3) is provided with two intermediate gears (330) ( 340) to the annular tooth surface (320). Holes (350) and (350) are formed on the diameter line of one of the intermediate gears (340), and a sensor (SE15) is disposed on the rotational transition path of the hole (350). When the intermediate gear (340) meshing with the annular tooth surface (320) makes a half turn, the magazine (3) rotates by one pitch of the disk holding groove (31). Therefore, the motor (M1) and the intermediate gears (330) (340)
Rotates, and if the sensor (SE15) detects one hole (350) and then detects the other hole (350), the magazine (3) has rotated by one pitch of the disc holding groove (31). I understand. A hit plate (360) is provided on the lower surface of the magazine (3),
A ridge (370) projects outward from the center of (360). On the chassis (2), there is provided a lever (380) close to the rotational transition of the contact plate (360), and one free end of the lever (380) faces the transition of the peak (370). Spring out
(390) Energized. On the rotation transition path at the other end of the lever (380), a detection switch (SW15) is provided, and a hit plate (3
When the (60) is away from the lever (380), the detection switch
(SW15) is pushed by the lever (380) and is turned ON.

When the magazine (3) rotates and the peak (370) abuts on the lever (380), the lever (380) rotates against the bias of the spring (390) and the detection switch (SW15). Is turned off. At this time, the No. 1 disk holding groove (31) is opposed to the input / output unit (4), and the processor (200) detects this. If power is cut off due to a power failure, the processor (20
When the energization is resumed because the stored content of (0) disappears, the processor (200) rotates the motor (M1) until the detection switch (SW15) is turned off, and NO.
The first disk holding groove (31) is made to face, and after detecting this, the operation proceeds to the next operation.

[0005]

In the conventional configuration, the magazine (3) is rotated until the detection switch (SW15) is turned off. Therefore, when the disk capacity of the magazine (3) increases, the identification number is searched. Takes time to do. In this case, a plurality of detection switches (SW15) are provided on the rotation transition path of the magazine (3), and one of the detection switches (SW15) is provided.
It is conceivable to detect the rotational position of the magazine (3) by detecting the operating state of (3), but the number of detection switches (SW15) increases, which leads to an increase in the number of components. The purpose of the present invention is
When the power is turned on while the memory contents of the processor have disappeared,
An object of the present invention is to quickly detect a rotational position of a magazine with a simple configuration. Another object of the present invention is to accurately determine the rotation amount of the magazine.

[0006]

In a disk recording or reproducing apparatus, a plurality of disk holding grooves (31) (31) which are rotatably provided on a chassis (2) and receive and stand a disk are formed radially. A magazine (3), a detected part formed concentrically with the magazine (3) in correspondence with the number of the disc holding grooves (31) on the magazine (3), and a position on the chassis (2). And a sensor means for detecting the passage of the detected part through rotation. Two or more sensor means are provided on the chassis (2) in accordance with the installation position of the detected part, and the two detected parts can be simultaneously detected, and the detected part is the number of the disk holding grooves (31). Control for determining the rotational position of the magazine (3) when one sensor means detects the detected part and the other sensor means does not detect the detected part. A circuit (8) is connected to the sensor means. Further, when the disc recording or reproducing apparatus rotates the magazine (3) in any direction when the identification number of the disc holding groove (31) to be opposed to the recording or reproducing unit (7) is input, Means for determining whether the disc holding groove (31) faces the recording or reproducing unit (7) more quickly, and when rotating the magazine (3) in the determined direction, which part of the detected portion is missing There is also provided a means for determining whether or not the light passes through the sensor means, and detecting the detected portion by the sensor means.

[0007]

[Operation and Effect] The rotation position of the magazine (3) can be any one.
It is determined that one sensor means detects the detected part and the other sensor means does not detect the detected part. That is, if at least one pair of sensor means is provided, the rotational position of the magazine (3) can be determined, so that the configuration for determining the rotational position of the magazine (3) is simplified. Further, when rotating the magazine (3), the detected portion is detected by a sensor means that does not allow the missing portion of the detected portion to pass. Thus, when the magazine (3) rotates, the detected portion is reliably detected, and the rotation amount of the magazine can be accurately obtained.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) An example of the present invention will be described below in detail with reference to the drawings. The same components as those of the related art are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 1 is an exploded perspective view of a disk recording or reproducing apparatus, and FIG. 2 is a plan view of the same. The support shaft (2) erected on the chassis (2)
In (1), a magazine (3) in which a plurality of disk holding grooves (31) and (31) for vertically storing a disk are radially fitted. The disc recording or reproducing apparatus according to the present embodiment is mainly used for business such as karaoke, and is fitted to a support shaft (21) with a plurality of discs stored in a magazine (3). Therefore, unlike the conventional disk recording or reproducing apparatus shown in FIG. 11, the input / output unit (4) is not provided. In the following description, for convenience of explanation, the number of the disk holding grooves (31) is eight, but may be eight or more.

On the chassis (2), two recording or reproducing units (7) and (7a) are provided apart from each other on the side of the rotation transition path of the magazine (3). Recording or playback unit (7) (7
Between (a), a circuit board (70) that is electrically connected to both recording or reproducing units (7) (7a) stands upright. Recording or playback unit
(7) The reason why two (7a) are provided is that the disc is continuously reproduced without interruption, and the recording or reproducing unit (7) is provided.
(7a) performs recording or reproduction by chucking the disk kicked out of the magazine (3). FIG. 5 is a magazine (3).
FIG. 4 is a side sectional view of a recording / reproducing unit (7). Chassis
(2) On the upper side, a kicking member (23) having a tip portion penetrating into the lower surface of the magazine (3) is slidably provided, and the kicking member (23) is provided.
Kicks the disk D in the magazine (3) outward.

A sensor means (S) for detecting the passage of a disk by an optical signal is provided between the recording or reproducing section (7) and the magazine (3).
E3) is provided, and when the sensor means (SE3) detects the passage of the disk, the recording or reproducing unit (7) or the magazine (3)
It can be seen that the disc has been inserted into any one of. Further, a roller unit (6) for holding a disc between the recording or reproducing unit (7) and the sensor means (SE3) and pulling it into the recording or reproducing unit (7) or discharging from the recording or reproducing unit (7). ) Is provided. As shown in FIG. 2, the roller unit (6) includes a pair of rollers (60) and (60). When the disc is located in the recording or reproducing unit (7), one point is shown in FIG. A part of the disk D is a roller unit as shown by a chain line.
(6), the roller unit (6) releases the clamping of the disk D. As shown by a dashed line in FIG. 5, a sensor means (SE4) for disc detection may be provided in the recording or reproducing unit (7) instead of or together with the sensor means (SE3). good. The chucking structure of the recording or reproducing unit (7), the mechanism for rotating the roller unit (6), and the mechanism for sliding the kick-out member (23) have been disclosed by the applicant in Japanese Patent Application Laid-Open No. 6-195842. Therefore, detailed descriptions are omitted.

As shown in FIG. 1, two sensors (SE1) and (SE2) are provided on a chassis (2) to face each other with a support shaft (21) interposed therebetween. Each of the sensors (SE1) and (SE2) has a light-emitting portion (5) and a light-receiving portion (50) opposed to each other with a recess (51) formed in the center portion therebetween, and the recess (51) has a magazine described later. The rib ring (32) of (3) fits. A motor (M1) for rotating the magazine (3) is provided on the chassis (2).
(M1) is linked to the magazine (3) via the gear train (22). The sensors (SE1) and (SE2) are connected to a control circuit (8), and the control circuit (8) is connected to the motor (M1) via a motor driver circuit (85). As will be described later, a memory (86) for storing information for each disk holding groove (31) is connected to the control circuit (8). The control circuit (8) is a sensor
Upon receiving the ON / OFF signals of (SE1) and (SE2), a drive signal is issued to the motor driver circuit (85).

Each disk holding groove (31) is assigned an identification number from 1 to 8, and in the memory (86), which identification number of the disk holding groove (31) faces one sensor. Memorize it. FIG. 7 is an internal block diagram of the control circuit (8). The control circuit (8) operates based on a program in the ROM (82), and operates via the bus line (83).
6), connected to a motor driver circuit (85) and an operation key (87) to which an external signal is input. As will be described later, an arithmetic circuit (81) for determining the rotation pitch of the magazine (3) is connected to the bus line (83).

FIG. 3 is a perspective view showing the magazine (3) upside down. A rib ring (32) protrudes from the lower surface of the magazine (3), and seven slits (33) (33) are opened in the rib ring (32). The seven slits (33) (33) are opened below each disk holding groove (31). Since there are seven slits (33) and (33) and eight disk holding grooves (31) and (31),
No slit (33) is formed below the disc holding groove (31). The identification number of this disc holding groove (31) is K
1 (see FIGS. 13A and 13B). In this example, a slit (3) is formed in the magazine (3) corresponding to the disc holding groove (31).
3) is formed, but the rotation position of the magazine (3) is detected by removing the slit (33) at only one location.

FIG. 4 shows a rib ring (32) and a sensor (SE1) (SE1).
It is a top view which shows the positional relationship of 2). Rib ring (32) is a sensor
When the slit (33) faces the sensors (SE1) and (SE2) as the magazine (3) rotates, the light from the light emitting unit (5) is received. Entering the section (50), the sensors (SE1) and (SE2) emit ON signals. When the slit (33) is displaced from the sensors (SE1) and (SE2), the light from the light emitting section (5) is blocked by the rib ring (32) and does not reach the light receiving section (50), and the sensor (S
E1) (SE2) is turned off.

(Initial position discrimination) Even if power is turned on after information is not stored in the memory (86) of the device, the magazine (3)
Is not known, that is, it is not known which disc holding groove (31) of the identification number faces the sensor (SE1) (SE2). Therefore, the control circuit (8) performs a control operation shown in the flowchart of FIG. 8 in order to set the magazine (3) at the initial position. First, it is confirmed whether or not the magazine (3) can be rotated (S1). For example, if a disc is straddled between the recording or reproducing unit (7) (7a) and the magazine (3), the magazine (3) cannot be rotated, and the sensor means (SE3) (FIG.
Disc) and the recording / reproducing unit
Check that (7) is not straddled. Disc is a magazine
If it straddles (3) and the recording or reproducing unit (7), the roller unit (6) is rotated, the disk is drawn into the magazine (3) or the recording or reproducing unit (7), and the magazine (3) can be rotated. (S2).

Next, the magazine (3) is once rotated clockwise (S3). FIG. 6 shows pulse waveforms of the sensors (SE1) and (SE2). When both sensors (SE1) and (SE2) are OFF, the magazine (3) continues to rotate because both sensors (SE1) and (SE2) do not detect the slit (33). Both sensors (SE1) (S
When E2) is ON (FIG. 6), both sensors (SE1)
(SE2) detects the slit (33), but since the rotational position of the magazine (3) is unknown, the magazine (3) continues to rotate.

When the sensor (SE1) is turned on, the sensor (SE1)
When 2) is OFF (in the case of FIG. 6), the sensor (SE1)
Since only the slit (33) has been detected (S4), the rotational position of the magazine (3) is known at this point. At this time, the sensor
It is assumed that the slit (33) detected by (SE1) corresponds to the disc holding groove (31) of the identification number 5. Sensor (SE2)
Is ON and the sensor (SE1) is OFF (in the case of FIG. 6), since only the sensor (SE2) has detected the slit (33) (S5), the rotation position of the magazine (3) at this time. I understand. At this time, the slit (3
3) corresponds to the disc holding groove (31) having the identification number 1, and the magazine (3) has reached the initial position. The rotational position of the magazine (3) is determined when one sensor is turned on and the other sensor is turned off. That is, since the rotational position of the magazine (3) can be determined only by the pair of sensors (SE1) and (SE2), the configuration for determining the rotational position of the magazine (3) is simplified.

After the rotation position of the magazine (3) is detected by the sensor (SE1), the power supply to the motor (M1) is stopped. However, when the magazine (3) is suddenly stopped from high-speed rotation, a vibration sound of the disk is generated due to an impact at the time of stopping. The impact acts on the motor (M1) and the gear train (22) (see FIG. 1). As described above, since the magazine (3) manufactured by the applicant accommodates 60 discs, the mass of the magazine (3) is large and the rotational inertia is also large.
Therefore, the impact when the magazine (3) is stopped increases. Therefore, when the rotation of the magazine (3) is stopped, the following operation is performed without abrupt stop.

Either sensor (SE1) or (SE2) is ON
Is reached, the control circuit (8) operates the motor driver circuit (8).
Control the power supply to 5) to slow down the magazine (3) (S
6). When the sensors (SE1) and (SE2) detect the next slit (33), the magazine (3) is stopped (S7). Next, the magazine
(3) is inverted (S8), and the magazine (3) is slit (33).
Is returned by one (S9). In this state, the magazine (3) is stopped (S10). That is, when stopping the magazine (3), the magazine (3) is once overrun by one slit (33), and then the magazine (3) is inverted and returned by one slit (33). This prevents the magazine (3) from stopping suddenly,
The magazine (3) can prevent an impact when stopping. Although the overrun amount is set to one slit (33), the overrun amount may be more than one.

After confirming the initial position of the magazine (3),
In order to reproduce the disc stored in the disc holding groove (31) having a desired identification number by the recording or reproducing unit (7), the procedure shown in the flowcharts of FIGS. 9 and 10 is performed. First, the control circuit (8) checks whether or not a disc is inserted in both recording or reproducing sections (7) and (7a) (S20). Specifically, the rollers (60) and (60) of the roller unit (6) are brought closer to each other,
The disc can be pinched, and then the rollers (60) and (60) are once rotated in the direction of ejecting the disc from the recording or reproducing unit (7). If the disk is in the recording or reproducing section (7), the sensor means (SE3) detects the presence of the disk. In this case, the disk is once drawn into the recording or reproducing section (7). The rotation of the rollers (60) and (60) is stopped.

Next, the magazine (3) is rotated one slit (33) at a time, and a recording or reproducing unit containing a disc is rotated.
(7) and the disk holding groove (31) are opposed to each other. Thereafter, a search is made for an empty disk holding groove (31) (S21). That is, once the kick-out member (23) is slid outward and the sensor means (SE3) does not detect the disk within a certain time, it is determined that the disk is not inserted into the disk holding groove (31). I understand. The control circuit (8) retracts the kick-out member (23), rotates the roller unit (6) in the disk discharging direction, and stores the disk in the disk holding groove (31) of the magazine (3) (S22). This operation is performed by both recording or reproducing units (7) and (7a).
Is performed, and the fact that there is no disc in both recording or reproducing sections (7) and (7a) is stored in the memory (86).

(Disk Check Operation) Next, a disk check operation is performed (S23). The disk check operation is to check for the presence or absence of a disk in the disk holding groove (31) of the magazine (3).
The operation of sliding (23) outward is performed in the disc holding groove (31).
Perform each time. If the disc is in the disc holding groove (31), the sensor means (SE3) detects the passage of the disc.If the disc is not in the disc holding groove (31), the sensor means (SE3) detects the disc. Does not detect the passage of After detecting the presence or absence of the disk, the kick-out member (23) is retracted, and the magazine (3) is rotated by one pitch of the disk holding groove (31). This operation is repeated for each disk holding groove (31), and the presence or absence of a disk in the disk holding groove (31) of each identification number is confirmed. The presence / absence information of the disk for each disk holding groove (31) is stored in the memory (86) by the CPU (80) in the control circuit (8). All disc holding grooves (31)
After confirming this operation for, the magazine (3)
Rotate to return to the original initial position. In addition, once kick-out member (23)
The disc is recorded or played back when the
(7), and the TOC (Tab)
le of contents) may be read and stored together in the memory (86).

After the disk check operation is completed, it is confirmed from the memory (86) that no disk is inserted in both the recording or reproducing units (7) and (7a) (S24), and then the current magazine (3) is read. Disk holding groove of desired identification number from rotation position
To play the disc stored in (31), use the magazine
It is determined whether (3) should be rotated left or right (S2
Five). Specifically, since the control circuit (8) knows the current rotational position of the magazine (3), the disc holding groove (31) of the desired identification number and the recording or reproducing unit (7) for reproducing the disk are used.
It can be seen how far the magazine (3) should be turned to make the. Because the amount of rotation is known, the magazine
If you rotate (3) to the left or right, the recording or playback unit (7)
To determine if you reach.

Next, since the magazine (3) is set at the initial position, only one of the sensors (SE1) and (SE2) has the magazine.
The slit (33) of (3) is fitted. The control circuit (8) selects the sensor in which the slit (33) is fitted (S2
6), energize the motor driver circuit (85) and load the magazine (3)
Is rotated by one pitch of the disc holding groove (31) (S2
7). Here, the control circuit (8) judges whether or not the number of pitches of the disk holding groove (31) for rotating the magazine (3) is less than 2 pitches (S28). Magazine if more than 2 pitches
(3) is rotated at a high speed, and during the rotation operation of the magazine (3) or at the initial position, the amount of rotation of the magazine (3) is 2
If it is less than the pitch, rotate the magazine (3) at low speed (S2
9). That is, since the rotation amount of the magazine (3) is known in advance, the rotation speed of the magazine (3) is switched during the rotation operation of the magazine (3), and the magazine (3) is not reversed after overrun after overrun. Reach the desired position. magazine
When the disc holding groove (31) of the desired identification number of (3) faces the recording or reproducing unit (7), the rotation of the magazine (3) is stopped (S30, S31).

In this example, a pair of sensors (SE1) (S
E2) alone determines the rotational position of the magazine (3), and both sensors
(SE1) and (SE2) include one rib ring (32) of the magazine (3).
Fits. That is, even if the diameter of the rib ring (32) is reduced, the rotational position of the magazine (3) can be detected, and the magazine (3) can be detected.
Even if (3) is downsized, the rotation position detection method of this example can be applied. The sensors (SE1) and (SE2) are provided symmetrically with respect to the center of rotation of the magazine (3). In this case, for example, the two sensors (SE1) (S1) are separated from each other by about 45 degrees in the magazine (3) shown in FIG.
It is also conceivable to arrange E2). However, in such an arrangement of the sensors (SE1) and (SE2), the magazine (3) must be rotated by a maximum of 360-45 = 315 degrees to detect the initial position of the magazine (3). On the other hand, if the sensors (SE1) and (SE2) are arranged 180 degrees apart, the magazine (3) may be rotated at most 180 degrees to detect the initial position of the magazine (3). That is, the magazine (3)
Requires a small rotation angle.

(Second Embodiment) In this embodiment, a magazine
The number of disk holding grooves (31) in (3) is N, and N = 60 in practice. As described above, the identification number of the disc holding groove (31) increases from the number 1 in the counterclockwise direction. The present embodiment is characterized in that after checking the number of each disk holding groove (31), a desired disk holding groove (31) is quickly opposed to the recording or reproducing unit (7). FIG. 11 is a plan view showing the initial position of the magazine (3), and FIGS.
FIG. 4 is a plan view showing the rotational position of the magazine (3). For convenience of explanation, the magazine (3) is indicated by a circle. In FIGS. 12A and 12B, K1 is the identification number of the disk holding groove (31) corresponding to the location where the slit (33) is missing as described above. 1
When the missing portion K1 of the slit (33) faces the sensor (SE1), the recording or reproducing unit (7) on the counterclockwise side of the two recording or reproducing units (7) and (7a) The disk holding groove (31) of No. 1 is opposed. Both sensors (SE1) (SE2)
Between them, N / 2 disk holding grooves (31) are located along the circumferential direction of the magazine (3). When the magazine (3) rotates clockwise from the position shown in FIG. 11, the disc holding groove (31) of the identification number X faces the recording or reproducing unit (7). This identification number X is temporarily stored in the memory (86).

It is assumed that the disc that the user wants to reproduce is stored in the disc holding groove (31) of the number Y. When the user inputs the number Y to the apparatus, the control circuit (8) first determines the rotation direction of the magazine (3). The magazine (3) rotates only clockwise or counterclockwise,
Half rotation of the magazine (3) is N / 2 disc holding grooves
(31), the amount of movement to the disk holding groove (31) of the number Y first is equal to the N of the disk holding groove (31).
Judgment is made based on whether or not the movement amount is smaller than / 2 movement amounts. This operation procedure is shown in the flowcharts of FIGS.

The arithmetic circuit (81) shown in FIG. 7 indicates that the number X of the disk holding groove (31) facing the current recording or reproducing unit (7) is 1
It is detected whether or not the range is <X ≦ N / 2 (S40).
If the number X is within this range, it is determined whether or not X <Y and whether or not Y ≦ X + N / 2 is detected (S41, S4).
2). If X <Y and Y ≦ X + N / 2, Y is located in the range of FIG. 12A, and if Y> X + N / 2, Y is naturally N
Since it is as follows, it is in the range of FIG. If Y is in the range of, Y is located on the opposite side of the disc holding groove (31) of number X facing the recording or reproducing unit (7) with the rotation center of the magazine (3) interposed therebetween. Disk holding groove (31)
Since the number is not more than X + N / 2, rotating the magazine (3) clockwise quickly faces the recording or reproducing unit (7) (S44). If Y is in the range, rotating the magazine (3) in the counterclockwise direction reaches the recording or reproducing unit (7) more quickly (S43). If X ≧ Y (S41), Y is in the range of FIG. When the magazine (3) is rotated counterclockwise rather than clockwise, it reaches the recording or reproducing unit (7) more quickly (S43).

If NO in step S40, that is, if the number X
Is within the range of N / 2 + 1 ≦ X <N (S45), X> Y
It is determined whether or not Y is (S46), and whether or not Y ≦ X−N / 2 is detected (S47). If NO in step S40,
Since X does not correspond to any number from 1 to N, an error is displayed (S49). If X> Y and Y ≦ X−N / 2,
Y is in the range of FIG. 12B, and if Y> X−N / 2, Y is in the range of FIG. 12B. This judgment is made because the number Y is the number X- located on the opposite side of the disk holding groove (31) of the number X across the rotation center of the magazine (3).
If it is smaller than N / 2, rotating the magazine (3) clockwise allows the disc holding groove (31) of the number Y to reach the recording or reproducing unit (7) more quickly. Step S
At 48, if YES, that is, if the number Y is within the range, rotate the magazine (3) clockwise (S50); if NO, ie, if the number Y is within the range, counterclockwise. It rotates (S51). If X ≦ Y (S46), Y is at the position of. If the magazine (3) is rotated clockwise, it quickly reaches the recording or reproducing section (7) (S50).

(Determination of Rotation Amount) Next, the rotation amount of the magazine (3) is determined. If the number Y is in the position, the magazine (3)
Rotates clockwise, so that (Y) of the disc holding groove (31)
-X) Rotate by the number. If the number Y is at the position of, the magazine (3) rotates counterclockwise, so that (N− (Y−X)) = (X + N−Y) of the disk holding grooves (31). If the number Y is within the range, the magazine (3)
Rotates by (XY) disc holding grooves (31). If the number Y is within the range, the magazine (3) rotates clockwise, so that (N−Y + X) of the disc holding groove (31).
Rotate by an amount. If the number Y is in the range,
(3) rotates in the counterclockwise direction by (X−Y) disc holding grooves (31). If the number Y is in the range,
(3) rotates clockwise by (YX) pieces of the disc holding grooves (31).

(Third Embodiment) In the present embodiment, the magazine is detected by one of the sensors through which the missing portion K1 of the slit does not pass.
The rotation of (3) is detected. That is, even if the missing portion K1 passes through the sensor, the sensor cannot recognize the rotation of the magazine (3), so that the accurate rotation amount of the magazine (3) cannot be obtained.
For this reason, a magazine with a sensor through which the missing portion K1 does not pass
The rotation of (3) is detected. This procedure is shown in the flowcharts of FIGS. First, the rotation direction of the magazine (3) is determined (S60). This procedure is the same as in the second embodiment. That is, the number X of the disk holding groove (31) facing the current recording or reproducing unit (7) is located in the range of 1 <X ≦ N / 2, and the number to be opposed to the recording or reproducing unit (7). Y is Y
> X and Y ≦ X + N / 2, a magazine
(3) is rotated clockwise, and if Y> X + N / 2, the magazine (3) is rotated counterclockwise. If X ≧ Y, the magazine (3) is rotated counterclockwise. The number X is in the range of N / 2 + 1 ≦ X, and X ≦ Y and Y ≦ X−N /
If 2, the magazine (3) is rotated clockwise, and Y> X
If -N / 2, rotate the magazine (3) counterclockwise. If X ≦ Y, the magazine (3) is rotated clockwise.

(Determination of Sensor Used) FIGS. 13A and 13B are plan views showing the positional relationship between the magazine (3) and the recording or reproducing unit (7). The range corresponds to the range of, in FIG.
The range of 1212 corresponds to the range of 図 in FIG. X = 1, that is, as shown in FIG.
E1) if the missing part K1 of the slit fits
(S61) If the magazine (3) is rotated, the sensor (SE1)
Always detects the slit. Therefore, in this case, the rotation of the magazine (3) is detected using the sensor (SE1) regardless of the input Y value (S68).

If the user has the identification number Y of the disc holding groove (31) facing the recording or reproducing unit (7) in the range, the magazine (3) is rotated clockwise as described above. If the magazine (3) is located in the range, the magazine (3) is rotated counterclockwise. Therefore, for example, if Y is as shown in FIG.
It is assumed that the magazine (3) is rotated in the counterclockwise direction and Y is made to face the recording or reproducing unit (7). In this case, when the slit is detected by the sensor (SE1), the missing portion K1 of the slit passes through the sensor (SE1) before Y faces the recording or reproducing unit (7). In this case, an accurate rotation amount of the magazine (3) cannot be obtained. Since the direction in which the magazine (3) is rotated is determined depending on which range of Y is located, the applicant classifies the following cases according to the positional relationship between the location K1 where the slit is missing and X. Was done.

When the number X satisfies 2 ≦ X ≦ K1 + N / 2, the positional relationship between X and K1 is shown in FIG.
2). Here, if Y falls within the range of 2 ≦ Y ≦ X + N / 2, that is, or (S63), the rotation of the magazine (3) is detected using the sensor (SE1). This reason will be described.
If Y is within the range, the magazine (3) is rotated clockwise from the position shown in FIG.
When the rotation of the magazine (3) is detected in (SE2), the missing portion K1 passes through the sensor (SE2), and the accurate rotation amount of the magazine (3) cannot be obtained. Therefore, the rotation of the magazine (3) is detected by the sensor (SE1). If Y is within the range, the magazine (3) is rotated clockwise from the position shown in FIG. 13 (a), but Y1 is located on the counterclockwise side of K1.
If it is located at the point, the disk holding groove of number Y (31)
Before the recording or reproducing unit (7) is opposed to
Does not pass through the sensor (SE1) located on the counterclockwise side of the recording or reproducing unit (7). Even if Y is located at the point of Y2 which is located on the clockwise side of K1, the sensor
Since K1 disc holding grooves (31) are located between (SE1) and the recording or reproducing unit (7) (see FIG. 11), the number Y
When the disc holding groove (31) faces the recording or reproducing unit (7), the missing portion K1 has not yet passed the sensor (SE1). Therefore, if Y is within the range of, the rotation of the magazine 3 is detected using the sensor SE1.

When Y is in the range of X + N / 2 + 1 ≦ Y ≦ N, that is, in the range (S64), the magazine (3) is rotated counterclockwise. However, the missing portion K1 passes through the sensor (SE1) by the time the disc holding groove (31) of the number Y faces the recording or reproducing unit (7).
When the rotation of the magazine (3) is detected using (1), the magazine is detected.
The accurate rotation amount of (3) cannot be obtained. Therefore, the sensor
Using (SE2), the rotation of the magazine (3) is detected (S6).
7). If Y is 1 (S65), the disc holding groove (3
By the time 1) faces the recording or reproducing unit (7), the missing part K
Since 1 passes through the sensor (SE1), the rotation of the magazine (3) is detected using the sensor (SE2) (S67). If Y does not correspond to any number from 1 to N, an error message is displayed (S66).

If the number X satisfies K1 + N / 2 + 1 ≦ X ≦ N (S69), the positional relationship between X and K1 is shown in FIG. If Y falls within the range of X−N / 2 + 1 ≦ Y ≦ N, that is, the range of ○ 11 or 1212, rotation of the magazine (3) is detected using the sensor (SE1) (S74). Number X is 1 to N
If the number does not correspond to any of the above numbers, an error is displayed (S73). If Y is in the range of 1111, the magazine (3) is rotated counterclockwise from the position shown in FIG. 13 (b). At this time, when rotation of the magazine (3) is detected by the sensor (SE2), Y Depending on the position, the missing portion K1 may pass through the sensor (SE2) before the disc holding groove (31) of the number Y faces the recording or reproducing unit (7), and the accurate position of the magazine (3) The amount of rotation is not required. Therefore, the rotation of the magazine (3) is detected by the sensor (SE1). Y is ○ 1
In the range of 2, the magazine (3) is rotated clockwise, but between the sensor (SE1) and the recording or reproducing unit (7), K
Since one disk holding groove (31) is located, the missing portion K1 does not reach the sensor (SE1) before the disk holding groove (31) of the number Y faces the recording or reproducing unit (7). Absent. Therefore, if Y is in the range of ○ 11 or ○ 12,
The rotation of the magazine (3) is detected using the sensor (SE1).

Y is in the range of 1 ≦ Y ≦ X−N / 2, that is,
(S71), the magazine (3) is rotated clockwise. However, if the position of Y is counterclockwise with respect to K1 (Y4 in FIG. 13 (b)), the missing portion is required before the disc holding groove (31) of number Y faces the recording or reproducing unit (7). Since K1 passes through the sensor (SE1), the sensor (SE1)
When the rotation of the magazine (3) is detected using the
The accurate rotation amount of (3) cannot be obtained. Therefore, the sensor
The rotation of the magazine (3) is detected using (SE2) (S7
Five). If Y does not correspond to any number from 1 to N, an error is displayed (S72). The amount of rotation of the magazine (3) required to cause the disk holding groove (31) of the number Y to face the recording or reproducing unit (7) can be obtained in the same manner as in the second embodiment.

In this embodiment, when rotating the magazine (3), the slit is detected by a sensor means which does not allow the missing portion K1 of the slit to pass. This allows the magazine
(3) During rotation, the slit is reliably detected, and the rotation amount of the magazine can be accurately obtained. In addition, one of the two sensors (SE1) and (SE2)
Since the passage of (33) is detected, the amount of power supplied to the sensor can be reduced, and there is a power saving effect. In the above description, the procedure of making the disc holding groove (31) face the recording or reproducing unit (7) located on the counterclockwise side of the two recording or reproducing units (7) (7a) is described. Although shown, the procedure for making the disk holding groove (31) face the recording or reproducing unit (7a) located on the clockwise side is also obtained in the same manner as described above.

The description of the above embodiments is for the purpose of illustrating the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made within the technical scope described in the claims.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a disk recording or reproducing apparatus.

FIG. 2 is a plan view of a disk recording or reproducing apparatus.

FIG. 3 is a perspective view in which a magazine is turned upside down.

FIG. 4 is a plan view showing a positional relationship between a rib ring and a sensor.

FIG. 5 is a side view of a recording or reproducing unit and a magazine.

FIG. 6 is a waveform diagram of a pulse generated by a sensor.

FIG. 7 is an internal block diagram of a control circuit.

FIG. 8 is a flowchart illustrating a procedure for detecting a rotational position of a magazine.

FIG. 9 is a flowchart when the magazine is stopped at a predetermined rotation position.

FIG. 10 is a flowchart when the magazine is stopped at a predetermined rotation position.

FIG. 11 is a plan view showing an initial position of the magazine.

FIGS. 12A and 12B are plan views showing rotational positions of a magazine.

FIGS. 13A and 13B are plan views showing a positional relationship between a magazine and a recording or reproducing unit.

FIG. 14 is a flowchart illustrating a procedure for determining a rotation direction of a magazine.

FIG. 15 is a flowchart illustrating a procedure for determining a rotation direction of a magazine.

FIG. 16 is a flowchart illustrating a procedure for selecting a sensor that does not detect a missing portion of a slit.

FIG. 17 is a flowchart illustrating a procedure for selecting a sensor that does not detect a missing portion of a slit.

FIG. 18 is a perspective view of a conventional disk recording or reproducing apparatus.

FIG. 19 is a plan view showing a magazine rotating mechanism of the disk recording or reproducing apparatus of FIG. 18;

[Explanation of symbols]

 (2) Chassis (3) Magazine (8) Control circuit (31) Disk holding groove (33) Slit

Claims (4)

(57) [Claims] 1. A rotatably mounted chassis (2),
Multiple disc holding grooves (31) (3
A magazine (3) in which 1) is radially formed, and the magazine
(3) Magazines corresponding to the number of disc holding grooves (31)
In a disk recording or reproducing apparatus provided with a detected part formed concentrically with (3) and sensor means located on the chassis (2) for detecting rotation of the detected part, the sensor means Are provided on the chassis (2) in opposition to the detection target, and two detection targets can be simultaneously detected. The number of the detection target is larger than the number of the disc holding grooves (31). A control circuit for determining the rotational position of the magazine (3) when only one sensor is missing and one sensor detects the detected part and the other sensor does not detect the detected part ( 8) A disk recording or reproducing apparatus, wherein the apparatus is connected to a sensor means. 2. The part to be detected on the magazine (3) is a magazine.
(3) is a slit (33), and the sensor means is an optical sensor (SE1) (S1) for detecting the presence of the slit (33).
2. The disk recording or reproducing apparatus according to claim 1, wherein E2) is provided symmetrically with respect to the rotation center of the magazine (3). 3. A rotatably mounted chassis (2),
A magazine (3) in which a disk holding groove (31) for storing a disk in an upright position is radially formed, and the magazine (3) is concentric with the magazine (3) corresponding to the number of the disk holding grooves (31) on the magazine (3). A control unit (8) for storing the rotational position of the magazine (3) detected by the sensor unit on the chassis (2); The sensor means is opposed to the part to be detected and the chassis (2)
Two or more detection parts are provided at the same time, and two detection parts can be detected simultaneously. The number of the detection parts is one less than the number of the disc holding grooves (31), and the control circuit (8) When the drive is re-driven after the memory disappears, the magazine (3) is once rotated, and when one sensor means detects the detected part and the other sensor means does not detect the detected part,
A method for controlling a disk recording or reproducing apparatus for recognizing a rotational position of a magazine (3) and stopping the rotation of the magazine (3). 4. A rotatably mounted chassis (2),
A magazine in which disks are stored upright and disk holding grooves (31) with different identification numbers are formed radially
(3), a recording or reproducing unit (7) provided outside the transition path of the magazine (3), and a magazine (3) corresponding to the number of disc holding grooves (31) on the magazine (3). A detection part formed concentrically with 3) and a sensor means for detecting the rotation of the detection part on the chassis (2) are provided, and the sensor means is provided on the chassis (2) in opposition to the detection part. Two or more detected parts are provided, and two detected parts can be simultaneously detected. The number of detected parts is one less than the number of disc holding grooves (31), and the recording or reproducing part (7 )), When the identification number of the disc holding groove (31) to be opposed is input, the magazine (3)
Is rotated, it is determined whether the disc holding groove (31) faces the recording or reproducing unit (7) more quickly, and when the magazine (3) is rotated in the determined direction, the detected portion is missing. A method of controlling a disk recording or reproducing apparatus in which a sensor means determines which part does not pass through and detects a detected portion by the sensor means.