JPH0817014B2 - Disc player - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player having a high-speed reproduction operation.

BACKGROUND ART A disc player that reproduces a disc such as a digital audio disc is a high-speed reproduction in which a jump operation in which an information detection point (spot light) of a pickup for reading recorded information jumps a certain number of recording tracks of the disc and a reproducing operation are alternately repeated. It has a function, ie, fast forward (FF) and fast reverse (REV) functions.

The conventional fast-forward (FF) and fast-reverse (REV) functions use non-locking FF and REV keys, and only jump and playback operations are repeated alternately while pressing these keys. Therefore, when searching for program information with the FF or REV function, the user has no choice but to search for the desired program information by time management or confirmation of high-speed playback sound, and it is difficult to find it reliably and quickly. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and a disc capable of surely and quickly searching for desired program information by high-speed reproduction operation without time management or confirmation of high-speed reproduction sound. An object is to provide a high-speed reproduction system for a player.

In the high-speed reproduction method according to the present invention, the reproduction information obtained by the reproduction operation is monitored, and the address information corresponding to each program information or the address information corresponding to the section obtained by further subdividing the program information based on the reproduction information is monitored. When a change is detected, the high speed reproduction operation is switched to the normal reproduction operation at the time of detection.

Embodiment Hereinafter, an auto loading disc player as an embodiment of the present invention will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 indicates the entire auto loading disc player. As shown in FIG. 1, a front panel 3 forming a part of the housing 2
Is provided with a slot 3a for inserting the disc 5 to be played, extending in the left-right direction. However, the arrow X direction is the left side, and the arrow Y indicates the front side. The arrow Z direction is upward. The disk 5 is of a type that records and reads signals using laser light, and has an outer diameter of about 12 cm. The front panel 3 is also provided with an operation button group 6 for operating the disc player, for example, play start and disc eject.

As shown in FIGS. 1 to 4, the housing 2
A chassis 7 is provided inside. Chassis 7 is the main body
7a and two sub-chassis installed side by side at the left end of the body
It comprises a B7b and a sub-chassis C7c, and a sub-chassis D7d provided at the front end on the right end of the main body 7a. 13 (a) to 15 (b) show the details of the sub-chassis 7b, 7c and 7d. A tray 10 is provided on the chassis 7 so as to be movable in a direction parallel to a disk carrying surface of a turntable, which will be described later, in this case, a front-rear direction (direction of arrow Y and direction opposite thereto). As is particularly clear from FIGS. 16 (a) and 16 (b), the tray 10 is provided integrally with a main body 10a extending in the left-right direction (the arrow X direction and the opposite direction) and both left and right ends of the main body. It is composed of a pair of a left side portion 10b and a right side portion 10c extending forward (direction of arrow Y). The left side portion 10b of the tray 10 is supported by a pin 10d protruding from the left side portion slidably engaging with a long hole 7f formed in the sub chassis C7c extending in the front-rear direction.

On the other hand, a pair of moving members 13 and 14 are arranged on both left and right sides of the chassis 7. The details of the moving members 13 and 14 are shown in FIGS. 17 (a) and (b) and FIGS. 18 (a) and (b). The moving member 14 on the right side is made of resin or the like. As shown in FIG. 4, the tray 10 is provided on the right side of the main body 7a of the chassis 7.
Is attached to the right side portion 10c of the tray 10 which is slidably supported by a guide shaft 15 which is fixed and extends in the moving direction, that is, the front-rear direction (the arrow Y direction and the opposite direction). Specifically, the moving member 14 is supported by slidably engaging a long hole 14a formed in the moving member in the front-rear direction with a pin 10f protruding from the right side portion 10c. . The left moving member 13 is made of steel plate and is located between the left side portion 10b of the tray 10 and the sub-chassis C7c. As is clear from FIG. 3, the moving member 13 extends in the front-rear direction. The long hole 13a formed by the
It is supported by being slidably engaged with a pin 10d projecting from the. Arms on both ends at the rear end of tray 10.
An interlocking shaft 17 to which 17a and 17b are fixed is provided extending in the left-right direction, and is rotatably attached to the tray 10. Pins 17c and 17d are projectingly provided at the tip ends of the arms 17a and 17b, respectively, and the pins extend in the vertical direction (the arrow Z direction and the opposite direction) at the rear end portions of the moving members 13 and 14, respectively. The long holes 13b and 14b thus formed are slidably engaged with each other. As shown in FIG. 4, a worm shaft 19 that extends in the moving direction of the moving member 14, that is, the front-rear direction (the arrow Y direction and the opposite direction) is rotatably provided at the lower right end of the chassis 7. . A motor 20 is fixed to the right rear end of the chassis 7, and a worm 20a fitted to the output shaft of the motor meshes with a worm wheel 19a fitted to the rear end of the worm shaft 19. There is. Further, a worm 19b is formed at the front end of the worm shaft 19, and the worm 19b is engaged with the rack portion 14c formed at the lower end of the moving member 14 in the moving direction of the moving member, that is, the front-back direction. ing.

An interlocking shaft 17 including the above-mentioned arms 17a and 17b,
The worm shaft 19 including the worm wheel 19a and the worm 19b, and the motor 20 including the worm 20a constitute a driving force applying unit that applies a driving force to the moving members 13 and 14.

As shown in FIG. 1, both left and right side portions 10b of the tray 10 are shown.
A container 22 carrying the disk 5 is arranged between 10 and 10c, and thus at a position sandwiched by the two moving members 13 and 14. The details of the container 22 are shown in FIG. The container 22, the tray 10, and the moving members 13 and 14 form a disk carrying portion. A pair of four pins 22a are provided at the left and right ends of the container 22, one pair in total, extending in the left-right direction. Container 22 has each of these pins 22
a is four long holes formed in the left and right sides 10b and 10c of the tray 10 by extending in the vertical direction (the arrow Z direction and the opposite direction).
Tray 1 by slidably engaging each of the 10g
It is movably supported within a predetermined range in the direction perpendicular to the tray movement direction, that is, in the vertical direction. Container 22
Each of the pins 22a protruding from the cams 13d and 14 formed in the moving members 13 and 14 after passing through the elongated hole 10g described above.
It is slidably engaged with d. Cam holes 13d and 14
d is the disc insertion direction from the disc insertion slot 3a, that is, from the front to the rear upward, that is, the container 22.
Is composed of a taper portion that is inclined in a direction away from the disk-carrying surface of the turntable described later, and two horizontal portions that continuously extend forward and backward, respectively, at the front end and the rear end of the taper portion. That is, the container 22 moves up and down as the moving members 13 and 14 move in the front-rear direction.

Although not shown in the drawings, the container 10 is placed directly above the turntable described below, that is, until the center of rotation of the disk 5 carried by the container 22 substantially coincides with the rotation axis of the turntable. Tray 22
Locking / releasing means is provided for locking the tray 10 to lock the tray 10 to the chassis 7 when the tray 10 reaches the position just above and releases the locked state of the container 22 with the tray 10. .

Then, the slot 3a is provided in the container 22 described above.
The disk gripping means for gripping the disk 5 inserted from the position and positioning it at a predetermined position of the container will be described.

As is apparent from FIG. 5, a pair of left and right long plates 28 and 29 are arranged on the lower surface of the container 22, and each of them has a length of 2
It is attached to the container 22 so as to be movable in the left-right direction (the arrow X direction and the opposite direction) via the pins 28a and 29a for each book. A pair of left and right short plates 30 and 31 is disposed behind the long plates 28 and 29, and is rotatably attached to the container 22 via pins 30a and 31a. Each pivoted end of the short plates 30,31, in this case each front end, is pivotally attached to each end of the long plates 28,29 by a pin 30c, 31c. The long plate 28 and the short plate 30 are collectively referred to as a first gripping member 33, while the long plate 29 and the short plate 31 are collectively referred to as a second gripping member 34. That is, the pair of gripping members 33, 34 are arranged on both sides of the disc insertion path, and are relatively in a plane substantially parallel to the main surface of the container 22 (parallel to the disc carrying surface of the turntable described later). It is freely movable to. Two pins 33a and 34a extending downward (opposite arrow Z direction) are provided at predetermined positions on the lower surface of the gripping members 33 and 34, respectively. These pins 33a and 34a extend at right angles to the main surface of the container 22 and act as engaging portions that engage with the outer periphery of the disk 5. The pair of coil springs 36 are
Both gripping members 33 and 34 are biased in a direction in which 33a and 34a approach the outer circumference of the disc.

Here, as shown in FIG. 6, each pin 33a (and 3
4a) shows a first taper portion 33b that is reduced in diameter toward the disk carrying surface of a turntable (described later), that is, downward (counter arrow Z direction) and downward toward the first taper portion. An hourglass-shaped taper portion 33d is formed which is composed of a second taper portion 33c having an enlarged diameter and which engages with the outer circumference of the disc.

As shown in FIG. 5, the container 22 is also provided with a synchronization plate 37 for synchronously driving the above-mentioned first and second gripping members 33, 34. More specifically, the synchronization plate 37 has a pin 2 at the center of the synchronization plate 37, and the container 2
It is rotatably attached to 2, and its front and rear ends are pivotally attached to the first and second gripping members 33, 34 by pins 37b, 37c. A roller 37d is provided at the rear end of the synchronization plate 37, and a pair of pins 38a are provided at the right end of the container 22.
The triangular cam portion 38b of the intermediate lever 38, which is provided so as to be reciprocally movable in the front-rear direction (the direction of the arrow Y and the opposite direction) via the, contacts the roller. That is, the reciprocating movement of the intermediate lever 38 causes the synchronizing plate 37 to rotate, whereby the first and second gripping members 33 and 34 are driven in the direction for releasing the gripping of the disk 5. In addition,
The intermediate lever 38 is the projection 14 provided on the moving member 14 described above.
When f is engaged with the rear end bent portion 38c, it is moved rearward with the rearward movement of the moving member, and the coil spring 36 (described above) returns it to the front.

The disk 5 inserted from the slot 3a is held by the first and second holding members 33, 34, the coil spring 36 as the biasing means, and the synchronizing plate 37, and the disk 5 is placed at a predetermined position in the container 22. Disk holding means for positioning is configured. The disc gripping means is included in the above-mentioned disc carrier (consisting of the tray 10, the moving members 13 and 14 and the container 22). Further, the disk carrying portion, the chassis 7 for movably supporting the disk carrying portion, driving force applying means for applying a driving force to the moving members 13 and 14 including the motor 20, and peripheral small members related thereto. A disk transport mechanism for transporting the disk 5 onto the disk-carrying surface of a turntable, which will be described later, is configured by the above.

Next, the playing means for playing the disc will be described.

As shown in FIG. 7, a support member 42 formed in a rectangular plate shape is arranged below the chassis 7, and
It is attached to the lower surface of the chassis 7 via a vibration isolation mechanism including four vibration isolation members 43 made of flexible rubber or the like. The support member 42 is provided with a turntable 45 and a spindle motor 46 as a drive source for directly driving the turntable. The support member 42 also includes a guide shaft 47 extending in the front-rear direction (the arrow Y direction and the opposite direction) in parallel to the disk carrying surface 45a (see FIG. 8) of the turntable 45, and an optical pickup. A carriage 48 is mounted which carries the means and is guided by both guide shafts. This guide shaft
A screw shaft 50 is arranged in parallel with 47, and is rotatably attached to the support member 42 at both ends thereof. A motor 51 is arranged in front of the screw shaft 50, and the screw shaft 50 is rotationally driven by the motor via a speed reduction mechanism 52 composed of a plurality of gears. A rectangular plate-shaped leaf spring 53 extending in the up-down direction (the arrow Z direction and the opposite direction) is fixed to the right end portion of the carriage 48 in a cantilever shape, and is attached to the free end portion of the leaf spring in the front-back direction. A pair of half nuts 54a, 54b provided at a predetermined distance in the (Y direction and the opposite direction) are screwed onto the screw shaft 50. However, both half nuts 54a and 54b are connected to each other by the connecting member 55.
Are integrally connected to each other.

The screw shaft 50, the motor 51, the speed reduction mechanism 52, the leaf spring 53, the half nuts 54a and 54b, and the peripheral small members related thereto constitute a drive mechanism for driving the carriage 48. . Further, the drive mechanism, the supporting member 42, the turntable 45, the spindle motor 46, the guide shafts 47a and 47b, and the carriage 48 constitute a playing means for playing a disk.

Next, a clamp mechanism for clamping the disc 5 conveyed on the playing position, that is, the disc-carrying surface 45a of the turntable 45 will be described.

As shown in FIGS. 7 and 8, a triangular plate-shaped arm member 58 as a supporting member is arranged above the supporting member 42 provided on the chassis 7, and at the rear end thereof. It is swingably attached to the support member 42 via a shaft 59 extending in the left-right direction (the arrow X direction and the opposite direction). As shown in FIG. 9, the arm member 58
The free end of the turntable 45, in this case the front end
A disk-shaped pressing member 60 is mounted rotatably in cooperation with the magnetic force of a magnet and functions as a disk clamp. The position of the arm member 58 shown in FIG. 8 is referred to as the unclamped position. Further, the arm member 58 swings downward by a predetermined angle, and the pressing member 60 is turned on.
The position of the arm member when it comes into contact with the surface of the disk 5 placed on 45 is called the clamp position. Arm member
58 moves relative to the turntable 45 between the clamped position and the unclamped position.

The arm member 58 has a cylindrical holder 58a at its free end. This holder 58a has a disk-shaped expanded portion 5 at the lower end.
8b, and is fixed to the main body of the arm member 58 by caulking at the upper end. On the other hand, the pressing member 60 has a main body portion of the holder 58a in the opening 61a formed in the main surface.
A disk-shaped yoke 61 that is rotatably attached to the holder by being loosely fitted in 58c, an annular magnet 62 concentrically coupled to the yoke 61 on the lower surface of the yoke 61, and a yoke 61.
And a bowl-shaped positioning member 63 for positioning the yoke with respect to the holder 58a so that the center of rotation of the holder coincides with the axial center of the holder 58a. However, the yoke 61 and the magnet 62 are connected by an adhesive, and the positioning member 63 is connected by the yoke 61 and a screw 63a. As is clear from FIG. 9, the opening 61a formed in the yoke 61 to be loosely fitted in the body portion 58c of the holder 58a is located at the rotation center of the yoke and has a diameter larger than the outer diameter of the body portion 58c. A first circle 61b that is slightly larger and smaller than the outer diameter of the expanded diameter portion 58b of the holder 58a, and a second circle that is positioned offset from the rotation center of the yoke and has a diameter larger than the outer diameter of the expanded diameter portion 58b. 61c has a shape in which the width of the connecting portion is larger than the outer diameter of the main body portion 58c.

The arm member 58, the shaft 59, and the pressing member 60 described above.
And constitute a clamping mechanism for clamping the disc 5 conveyed on the turntable 45.

As is apparent from FIG. 8, a spindle motor 46 that rotationally drives the turntable 45 has a spindle 46a connected to the turntable 45, and the spindle 46a is a bearing portion provided in a main body 46b of the spindle motor 46 ( It is rotatably supported by (not shown). Arm member 58
Is in the above-mentioned clamp position, the lower end of the holder 58a, which is a part of the arm member, engages with the tip of the spindle 46a to direct the spindle toward the bearing (not shown), that is, downward. It is designed to be pressed toward. Therefore, the opening 6 through which the spindle 46a can be inserted is provided at the bottom of the bowl-shaped positioning member 63, which is a component of the pressing member 60.
3b is formed. In addition, the spindle 46a of the holder 58a
A disk-shaped receiving member 58d made of resin or the like is provided at the engaging portion with and for smoothing the engaged state. Further, the turntable 45 is provided with a guide member 45b which is fitted in the center hole of the disc 5 and guides the disc to the rotation center of the turntable.

Here, the assembly of the above-mentioned clamp mechanism will be briefly described.

First, a holder 58a as a part of the arm member 58 is caulked and fixed to the main body of the arm member 58 in advance. Aside from this,
The disk-shaped yoke 61 and the ring-shaped magnet 62 are bonded with an adhesive. Next, of the openings 61a formed in the yoke 61,
The second circle 61c shown in FIG. 9 is inserted into the expanded diameter portion 58b of the holder 58a, and then the main body portion 58c of the holder 58a is positioned inside the first circle 61b. In this state, the positioning member 63 is attached to the yoke 61 with the screw 63a. Then, the holder 58a and the yoke 61 (and the magnet 62) are positioned substantially concentrically with each other. Thus, the assembly of the clamp mechanism is completed. The clamp mechanism operates by the movement of the moving member 14 described above.

As shown in FIGS. 2, 10, and 11, a moving plate 67 is provided on the left side of the left sub-chassis B7b so as to be movable in the front-rear direction (the arrow Y direction and the opposite direction). Further, another moving plate 68 is provided on the left side of the right sub-chassis D7d so as to be movable in the front-rear direction. 19 (a), (b), 20 (a)
The details of each transfer plate 67 and 68 are shown in FIGS. More specifically, the two moving plates 67 and 68 are provided with pins 67a and 68a projecting from the two moving plates in a pair of long holes 7h and 7i formed in the sub-chassis B7b and the sub-chassis D7d so as to extend in the front-rear direction. Are supported by slidable engagement. An interlocking shaft 70 having arms 70a and 70b fixed to both ends is provided at the front end of the chassis 7 so as to extend in the left-right direction, and is rotatably attached to the chassis 7. Pins 70c and 70d are respectively provided on the tip ends of the arms 70a and 70b so as to project therefrom, and the pins extend to the rear ends of the moving plates 67 and 68 in the vertical direction (the arrow Z direction and the opposite direction). Elongated holes 67b and 68b formed by
Are slidably engaged with each other. That is, as one moving plate 68 moves, the other moving plate 67 also reciprocates. The moving plate
Reference numeral 68 denotes a protrusion 14h (secondary protrusion provided on the moving member 14).
(See FIGS. 18A and 18B) is the rear end bent portion 68c of the moving plate.
By engaging with (as shown in FIG. 2), the moving member 14 is moved rearward as the moving member 14 moves rearward. The forward movement of the moving plates 67 and 68 is performed by the urging force of the coil spring 72 (shown in FIG. 11) connected to the moving plate 68.

As shown in FIG. 1, at the position sandwiched by the pair of moving plates 67 and 68 described above, the main surface of the disk 5 inserted from the slot 3a formed in the housing 2 and the upper surface thereof are in sliding contact with each other. A flat plate-shaped guide member 74 for guiding the disc directly below the container 22 is arranged. Details of the guide member 74 are shown in FIGS. 21 (a) to 21 (d). A felt 74a is provided on the upper surface of the guide member 74 which is in contact with the main surface of the disk 5 (see FIG. 21 (a)).
Is affixed. As is clear from FIG. 21 (a),
There are a total of four pins 74 on each of the left and right ends of the guide member 74.
b is provided extending in the left-right direction. Each of the pins 74b of the guide member 74 has a sub-chassis B7b and a sub-chassis D7.
It is supported movably within a predetermined range in the vertical direction by slidably engaging with elongated holes 7j and 7k formed in pairs and extending vertically in the vertical direction (arrow Z direction and the opposite direction). There is. Each pin 74b protruding from the guide member 74
Is also the long hole 7j of subchassis B7b and subchassis D7d.
And 7k, and the moving plates 67, 6 described above.
The cam holes 67d and 68d respectively formed in 8 are slidably engaged. The cam holes 67d and 68d as a whole incline upward from the front to the rear (in the direction of the counter arrow Y). That is, the guide member 74 moves up and down as the moving plates 67 and 68 move in the front-rear direction.

As shown in FIG. 2, a bracket 76 is installed between the front end portions of the sub chassis B7b and the sub chassis D7d. For example, as shown in FIG. 3 and FIG. 12, a shaft 77 extending in the left-right direction (the arrow X direction and the opposite direction) is attached to the lower portion of the bracket 76, and the shaft 3 closes the slot 3a. A lid 78 is swingably provided at its upper end. The lid 78 is biased by a spring member 79 fitted onto the shaft 77 toward a closed position that closes the slot 3a.

As is particularly clear from FIG. 12, a rotating lever 80 is attached to the front end of the sub-shard B7b so as to be rotatable in the arrow P direction via a pin 80a. The free end of the rotary lever 80 is a pin 80b that abuts the front surface of the lid 78.
And is for swinging the lid 78 toward the open position. The rotating lever 80 is a coil spring.
It is urged in the clockwise direction in FIG. 12 by 81. Similarly, as shown in FIG. 12, the front end of the moving member 13 described above can come into contact with the free end of the rotating lever 80 from the rear side. When the moving member 13 moves to the rear (the direction opposite to the arrow Y), the coil spring 81 causes the turning lever 80 to turn clockwise (in FIG. 12), whereby the lid 78 moves to the open position. To do. Further, when the moving member 13 is at its forward movement limit position (the position shown in FIG. 12), the rotating lever 80 is rotated counterclockwise by the moving member and is biased by the spring member 79. The lid 78 returns to the closed position that closes the slot 3a. That is, the lid 78 is held in the closed position and the open position by the disc transport mechanism (described above) including the moving member 13. The spring member 79 described above,
The rotating lever 80 including the pin 80a and the coil spring 81 are both included in the disc transport mechanism.

As shown in FIG. 3, a solenoid plunger 83 is fixedly provided at the rear end of the sub chassis C7c. This solenoid plunger 83 is for temporarily moving the lid 78 to the closed position. Specifically, as shown in FIG. 3, a lever member 84 extending in the front-rear direction is arranged along the entire length of the sub-chassis C7c, and is attached to the sub-chassis C7c so as to reciprocate in the front-rear direction. There is. The front end of the lever member 84 is formed with an abutting portion 84a that abuts the free end of the rotating lever 80 from the rear. The rear end of the lever member 84 is connected to the plunger 83a of the solenoid plunger 83 by a pin 84b. That is, the plunger 83 of the solenoid plunger 83
When a is pulled in, the lever member 84 moves forward, whereby the abutting portion 84a of the lever member causes the turning lever 80 to turn counterclockwise (in FIGS. 3 and 12). Then, the lid 78 moves to the closed position.

For example, as shown in FIGS. 10 and 12 (a) and (b), the slot of the housing 2 is provided at the front end of the guide member 74.
An insertion prevention member 86 for preventing double insertion of the disc from 3a is attached. This insertion prevention member 86 is movable between the (insertion) prevention position shown by the chain double-dashed line in FIG. 12 and the non-prevention position shown by the solid line. As shown in FIGS. 21 (a) and 21 (b), small bending portions 86a are formed at both left and right ends of the insertion preventing member 86, and circular opening portions formed at both left and right ends of the guide member 74. The bent portion 86a is smoothly fitted in the 74c. Therefore, the insertion prevention member 8
6 can be swung about this bent portion 86a, thereby moving between the prevention position and the non-prevention position.

For example, as shown in FIG. 12, a tongue piece 88 fixed to the chassis 7 is located below the insertion preventing member 86.
The insertion preventing member 86 moves up and down together with the guide member 74. At the time of this up and down movement, the insertion preventing member 86 is pressed against the tongue piece 88 and swings around the bent portion 86a (see FIG. 21), Move between preventive and non-preventive positions. Guide member 74
Is driven by the above-described disc transport mechanism, and therefore the insertion preventing member 86 is moved by the disc transport mechanism.

The above-described movement of the lid 78 is performed when the insertion prevention member 86 is moving to the non-prevention position. With this configuration, it is not necessary to provide the lid 78 with a notch for avoiding a collision with the insertion preventing member 86.

Next, the support member when the disc is not being played.
The locking means for locking 42 (supporting the playing means including the turntable 45 etc.) to the housing 2, in this case the chassis 7, will be described.

As shown in FIG.
One, two on the right side, three lock pins 91, 92 and 93 are fixedly installed. Each of these lock pins extends in the left-right direction.

On the other hand, as shown in FIG. 10, an opening 67h including a circular portion 67f and a linear portion 67g continuing to the rear end of the circular portion is formed in the lower rear end of the moving plate 67 arranged on the left side of the chassis 7.
Is formed, and the lock pin 91 is fitted in the opening 67h. When the lock pin 91 is fitted into the linear portion 67g of the opening 67h, the lock pin is locked with respect to the moving plate 67 and hence the chassis 7, and when the lock pin 91 is fitted into the circular portion 67f, the locked state is released. It

As shown in FIG. 11, on the right side of the chassis 7, there is a pin extending in the left-right direction (the arrow X direction and the opposite direction).
95 is projected, and the longitudinal lock plate A9 is attached to the pin.
Reference numeral 6 is attached so as to be rotatable in the substantially central portion and in the direction of arrow Q. A coil spring 97 is connected to the lock plate A96, and the lock plate A is biased clockwise by the coil spring in FIG. A notch 96a for locking the lock pin 92 by engaging with the lock pin 92 when the lock plate A rotates counterclockwise is formed at the front end of the lock plate A96. A cam portion 96c is formed near the rear end of the lock plate A96, and
Pin 68 protruding from the moving plate 68 arranged on the right side of
f is slidably engaged with the cam portion 96c. That is, the cam portion 9 of the pin 68f associated with the back-and-forth movement of the moving plate 68.
The lock plate A96 is rotated by the movement along the 6c and the action of the coil spring 97.

A substantially crescent-shaped lock plate B99 is arranged at the rear end of the lock plate A96 and is swingably attached to the chassis 7 in the arrow R direction via a pin 99a. The lock plate B99 is for engaging with the lock pin 93 to lock the lock pin with respect to the chassis 7, and the free end thereof is the lock plate A96.
It is pivotally attached to the rear end portion by a pin 99b and swings with the rotation of the lock plate A96.

The lock pins 91, 92, 93 described above, the moving plate 67,
The lock plate A96, the coil spring 97, the lock plate B99, and the peripheral small members related thereto support the support member 42 when the disc is not playing.
Locking means is configured to lock the with respect to the chassis 7, and thus to the housing 2.

As shown in FIG. 2, a pin 101 extending vertically is provided at the front end of the main body 10a of the tray 10.
A lever member 102 extending in the left-right direction over substantially the entire length of the main body 10a is attached to the pin 101 so as to be rotatable in the central portion and in the arrow S direction. Lever member
At the left end of 102, a protrusion 102a is provided so as to engage the outer periphery of the disk 5 positioned at a predetermined position of the container 22. Another protrusion 102a is also formed on the left end portion of the lever member 102, and the protrusion is the main body 10a of the tray 10.
Engages with the operator of the detection switch 104 fixedly provided on the lower surface of the left side of the. In the detection switch 104, the disk 5 is the container 22
It is for detecting that it has been positioned at a predetermined position.

At the right end of the lever member 102, rearward (counter arrow Y direction)
A protrusion 102c that extends toward the upper end and can contact the rising portion 7m formed at the rear end of the chassis 7 is formed. When the tray 10 moves backward and reaches the backward movement limit position, the protrusion 102c contacts the rising portion 7m, and the lever member 102 rotates counterclockwise in FIG. The lever member 102 is biased by the coil spring 105 in the clockwise direction in FIG.

Another protrusion 102d is also provided on the right end of the lever member 102, and the protrusion engages with an operator of a detection switch 106 provided on the lower surface of the right side of the main body 10a of the tray 10.
The detection switch 106 is for detecting that the tray 10 has reached its rearward movement limit position.

As also shown in FIG. 2, the main body 10a of the tray 10
A detection switch 108 for detecting that the rear end portion of the moving member 14 has reached the backward movement limit position thereof by engaging with the rear end portion of the moving member 14 is provided on the lower surface of the right side portion of the. On the other hand, as shown in FIG. 4, at the front end of the right end of the chassis 7, the moving member 14 engages with its actuator to detect that the moving member has reached the forward movement limit position. A detection switch 109 is provided. Further, as shown in FIG. 7, a detection switch 110 for detecting that the carriage 48 has returned to the home position, that is, the rest position before the start of playing, is provided at a predetermined position of the supporting member 42 for supporting the playing means. It is provided.

The above-mentioned operation button group 6, each detection switch 104, 106, 108
The signals emitted from the control circuits 110 and 110 are transmitted to the control circuit 111 shown in FIG. 29, which is arranged at a predetermined position in the housing 2.

A block diagram of the control system is shown in FIG. 29. The control circuit 111 is composed of, for example, a microcomputer having a built-in memory.
The loading mechanism 112, the carriage mechanism 113, the spindle motor 46, and the like are driven at the timings described below based on the respective signals issued from the 4, 106, 108, 110, and the like. The carriage mechanism 113 and the spindle motor 46 are driven by the control circuit 111 via the carriage servo circuit 114 and the spindle servo circuit 115. The control circuit 111 outputs display information to the display 116 that makes various displays. The read information read from the disk 5 by the pickup 117 is supplied to the control circuit 111 after being subjected to signal processing such as demodulation in the signal processing circuit 118. The control circuit 111 further includes
The solenoid plunger 83 described above is also driven via the drive circuit 119.

The solenoid plunger 83 is driven to close the lid 78 during the disc loading process. In driving this solenoid plunger 83,
As shown in the timing chart of FIG. 30, the control circuit 111 detects the detection output (a) of the detection switch 106 that detects that the tray 10 (shown in FIG. 2) of the loading mechanism 112 has reached the backward movement limit position. In response to a drive pulse (c) having a pulse width of a constant time T, followed by a constant time T
Drive pulse (c) with a duty of about 50% after the passage
Is supplied to the drive circuit 119. Then, the solenoid plunger 83 is driven in response to the movement member 14 (shown in FIG. 2) of the loading mechanism 112 reaching the rearward movement limit position, that is, the detection output (b) of the detection switch 108 for detecting the completion of loading. To stop.

In this way, by supplying the drive circuit 119 with a drive pulse having a pulse width of the constant time T at the start of driving the solenoid plunger 83 and a drive pulse of about 50% duty after the predetermined time T has passed, the solenoid plunger 83 is supplied. Is supplied with a large current necessary for attracting the plunger at the time of driving, and after the attraction, a holding current small enough to hold the attracted state is supplied.

The drive pulse with a duty of about 50% is controlled by the control circuit.
It can be easily generated by the microcomputer constituting 111.

The structure of the carriage servo circuit 114 is shown in FIG. In the figure, the carriage drive voltage for driving the carriage motor 51 is supplied to the bidirectional drive circuit 122 via the loop switch 120 and the equalizer circuit 121. The bidirectional drive circuit 122 drives the carriage motor 51 in both forward and reverse directions according to the polarity of the drive voltage.
The carriage drive voltage also serves as a non-inverting input of a comparator COMP ₁ having a reference voltage + Vref as an inverting input, and also as an inverting input of a comparator COMP ₂ having a reference voltage −Vref as a non-inverting input. The reference voltages + Vref and −Vref are set corresponding to the dead zone of the carriage motor 51. Comparator COMP ₁ and COMP ₂ outputs become 2 inputs of OR gate 123, and OR
Gate 123 produces a high level output when the carriage drive voltage is above + Vref and below -Vref. OR gate
The output of 123 is supplied to the loop switch 120, is in the ON / OFF control signal of the switch 120, and is the inverter 1
It is an ON / OFF control signal for the transistor Q as a short-circuit means for short-circuiting both ends of the motor 51 via the resistor 24 and the resistor R.

In the carriage servo circuit 114 having such a configuration,
When the drive voltage is within the range of + Vref to -Vref,
Since the output of the OR gate 123 is at the low level, the loop switch 120 is turned off (open), that is, the servo loop is opened. As a result, the drive voltage is + Vref ~
In the range of −Vref, no drive voltage is supplied to the bidirectional drive circuit 122, so as shown in FIG. 32, a small current that does not contribute to the start of the motor 51 stops flowing, It means that the power consumption can be reduced by the amount (the shaded portion in the figure). At this time, both ends of the motor 51 are short-circuited by the transistor Q in the ON state, and the rotor of the motor 51 is fixed. Therefore, the problem that the carriage 48 (shown in FIG. 7) moves due to external vibration does not occur. is there.

On the other hand, if the carriage drive voltage is + Vref or higher and -Vr
When it is less than ef, the output of the OR gate 123 becomes high level, and the loop switch 120 becomes in the on (closed) state. Therefore, depending on the polarity of the drive voltage and its level,
51 will be driven. At this time, the transistor Q is in the off state.

Next, the operation of the auto-loading disc player having the above-mentioned configuration will be briefly described according to the playing procedure. Incidentally, FIGS. 1 to 12 show an initial state before the performance of the disc player.

First, slot the disk 5 as shown in FIG.
Insert from 3a into the housing 2. However, the disk 5 advances while pushing the lid body 78 (see FIG. 3, etc.) that closes the slot 3a. When the disc 5 is inserted about half way into the housing 2, the outer periphery of the disc is shown in FIG.
Of the four pins 33a, 34a provided on the 33, 34, the two pins on the front side are engaged with each other and the two pins are pushed leftward and rightward to proceed. The disk 5 is a line connecting the axial centers of the two left and right pins 33a, 34a.
When the center of rotation of the disk exceeds, both pins are urged (by the coil spring 36) in the direction approaching the outer circumference of the disk, so that the disk 5 is pulled into the housing 2 even if the disk 5 is released. . At this time, the guide member 74 effectively guides the disc 5, so that the disc 5 is positioned at a predetermined position of the container 22 and is gripped by the above-mentioned four pins 33a and 34a in total. At this time, even if the disc 5 is inserted with a slight inclination, the inclination is corrected by the action of the hourglass taper portion 33d shown in FIG. Also, as mentioned above,
Since the disk 5 is held by these four pins 33a and 34a, the disk 5 once positioned will not be displaced by some external vibration.

At the same time when the disc 5 is positioned with respect to the container 22, the outer periphery of the disc 5 engages with the protrusion 102a of the lever member 102 shown in FIG. It can be rotated by a predetermined angle in the direction. Therefore, the detection switch 104 is operated. Then, the motor 20 starts rotating, and the moving members 14 and 13 are driven rearward via the worm shaft 19 and the like. The container 22 by the lock / unlock means described above.
Is locked to Tray 10 and therefore the motor
With the rotation of 20, the moving members 14 and 13, the tray 10 and the container 22 are moved only rearward.

When the tray 10 and the container 22 move backward by a predetermined distance and the rotation center of the disk 5 carried by the container coincides with the rotation axis of the turntable 45, the lock
The release means operates to lock the tray 10 with respect to the chassis 7, and at the same time releases the locked state of the container 22 with respect to the tray 10. Further, the protrusion 102d of the lever member 102 described above operates the detection switch 106. Thus, the rearward movement of only the moving members 14 and 13 is continued, and the state shown in FIGS. 22 to 28 is reached. Below, this moving member
The operation of each member associated with the backward movement of only 14 and 13 will be described.

As can be seen from Figures 22 to 24, the container 22
The four pins 22a protruding from the left and right ends of the moving member 1
Sliding along the cam holes 13d and 14d formed in 3 and 14, respectively,
The container 22 descends while carrying the disc. On the other hand, as shown in FIGS. 25 and 26, the moving plates 67 and 68 are also driven backward by the backward movement of the moving member 14, whereby the cam holes 67d and 68d of the moving plates are pinned to the pins 74b. The guide member 74 which is engaged by the downward movement also descends. Therefore, the insertion preventing member 86 attached to the guide member 74 moves to the state shown in FIG. This insertion prevention member
Immediately before the movement of 86, as shown in FIG. 27, the lever member 89 is driven forward by the solenoid plunger 83 (see FIG. 3), and the abutting portion 84a of the lever member moves the pivot lever 80. Is pushed from the rear to turn the turning lever counterclockwise, and the lid 78 is positioned at the closed position. Therefore, the insertion preventing member 86 has a shape to support the rear surface of the lid 78,
The lid 78 is firmly held in the closed position to prevent double insertion of the disc. The solenoid plunger 83 is deenergized immediately thereafter.

Further, as shown in FIG. 26, by the rearward movement of the moving plate 68 and the action of the coil spring 97, the lock plate A96 rotates about the pin 95 in the clockwise direction in the figure, and locks accordingly. The plate B99 also rotates counterclockwise about the pin 99a, whereby the chassis 7 of the lock pins 92 and 93, and thus the housing 2
The lock state for is released. On the other hand, as shown in FIG. 25, by the rearward movement of the other moving plate 67,
The lock state of the other lock pin 91 is also released, whereby the support member 42 (see FIG. 7) carrying the playing means including the turntable 45 is released from the lock state with respect to the housing 2.

The disc 5 is placed on the turntable 45 by the descent of the container 22 described above. Further, the final movement of the moving member 14 causes the disc to be clamped, and the pins 33a, 34 provided on the container 22 as shown in FIG.
The gripped state of the disk 5 by a is released.

When the moving member 14 reaches its rearward movement limit position at the same time when the disk 5 is clamped, the vicinity of the rear end portion of the moving member is detected by the detection switch 10 as shown in FIGS. 22 and 24.
The detection switch is operated by engaging with 8, and the motor 20 stops. In this state, the disc can be played.

In playing, as shown in FIG. 33, first in step 1, it is determined whether or not the pickup 117 (shown in FIG. 29) is at the home position based on the output of the detection switch 110. If it is at the home position, the pickup is performed. 117
Focus (step 2) and pick up 117
To start the reading operation of. And in step 3,
Based on the address information obtained by the pickup 117, the information recording start position which is the lead-in area of the disc 5, that is, the TOC (Table of Contents) position is calculated. Information such as the number of songs recorded on the disc, the total absolute time, and the playing time of each song is recorded in the TOC, and it is necessary to read the recorded information of this TOC when starting the performance. As a method of calculating the TOC position (target address) from the current address, for example, Japanese Patent Application No.
Using the method proposed in 01994, that is, the distance to the target address is obtained more accurately as the target address is approached, the distance to the target address is repeated until the distance to the target address becomes a constant value. This is a method of calculating and moving the pickup 117.

When the TOC position is calculated in step 3, the pickup 117 is moved to that position (step 4), and then a timer for a fixed time Ta (for example, 15 seconds) built in the control circuit 111 is set (step 5). . In step 6, it is judged whether or not the certain time Ta has elapsed, and if not, the contents of the TOC are read (step 7).
Then, it is judged whether or not the reading of the TOC contents is completed (step 8), and if it is completed, the program area is searched (step 9) and the performance operation is started.

If it is determined in step 8 that the reading of the TOC contents has not been completed, the process proceeds to step 6 to repeat the above operation. In this repeated operation, when it is determined in step 6 that the above-mentioned fixed time Ta has elapsed,
For example, assuming that the lead-in area has a scratch or the like and causes a hang-up, the process proceeds to step 9 and the performance operation is started. As a result, the lead-in area will not hang up due to scratches, etc., and you will not enter an infinite loop.This sequence will end after Ta has passed for a certain period of time even if you do not completely write the TOC contents. Smooth operation is possible. It should be noted that the digital audio disc player can search each program information even if the TOC contents cannot be read.

When it is determined in step 1 that the pickup 117 is not at the home position, the carriage mechanism 13 moves the pickup 117 to the home position (step 10).

A plurality of program information (songs) are recorded on a digital audio disc, and the player specifies a desired piece of music in advance and stores it in a memory, and sequentially plays the pieces of music in the order stored in this memory. A memory play function is provided.

The procedure for storing the designated song in the memory will be described with reference to the flowchart of FIG. Scan (SCAN)
Key (1 key of the operation button group 6 in FIG. 29,
The scan mode is set by pressing (on) the single device (not shown). In this scan mode, the beginning of each song is played for a certain period of time (for example, 10 seconds), and if it is determined in step 11 that 10 seconds have passed, the next song is searched (step 12) and the above operations are performed. Will be performed over all the recorded songs.

In this scan mode, if it is determined in step 11 that 10 seconds have not elapsed and that the scan key is pressed (on) again in step 13, the process proceeds to step 14 to store the song in the memory. If it is determined that the button has not been pressed, the process returns to step 11.

In step 14, the number of songs that can be stored in the memory is N
Then, it is determined whether or not N-1 is stored in the memory, and if it is determined that N-1 is not stored, then in step 15, whether N, that is, the number of storable songs is stored in the memory. It is determined whether or not. If it is determined in step 15 that the song is not stored, the address information (track number, etc.) of the song is stored in the memory (step 16), and then the next song is searched (step 17). Return to step 11.

When it is determined in step 14 that the number of music stored in the memory is N-1, it is displayed on the display 116 that the number of music stored in the memory reaches the storable limit number (step 18), Then, the process goes to step 16 to store the address information of the song in the memory. Also, step 15
When it is determined that the number of songs stored in the memory has reached N, the address information of the oldest song is erased (step 19), and then the process proceeds to step 16 to move to the address information of that song. Is stored in memory.

In this way, the designated song is stored in the memory. According to this method, the contents of the song stored in the memory can be confirmed and the scan key can be used also for storing the song in the memory. Become.

This method is not limited to the application to a digital audio disk, and even in the case of a digital audio tape or even a conventional audio tape, the count value between songs is used as the address information, or the address information is used. It is applicable as long as the information is recorded.

Next, the operation of the memory PLAY mode for sequentially playing the songs stored in the memory will be described with reference to the flowchart of FIG.

When the memory PLAY mode is entered, it is first determined in step 20 whether or not the designated song is stored in the memory. If so, the pointer for selecting one of the plurality of designated songs in the memory is currently stored. The data (address information) pointed to is called (step 21), the pointer is advanced to the next data (step 22), and then the designated song is searched (step 23).

Then, if it is determined in step 24 that the performance of the specified song has ended, and it is determined that the memory PLAY mode has not been canceled at that time (step 25), the process returns to step 21, and the next pointer pointed to The specified song is played, and the same operation is repeated until it is determined in step 25 that the memory PLAY mode is released.

If it is determined in step 20 that the designated song is not stored in the memory, the process proceeds to step 26. In step 26, a designated song is generated by a random number, and the generated designated song is stored in the memory for the number of storable songs in the memory. Then, the operation of searching for the first designated music stored in the memory (step 23) and thereafter returning to step 21 through step 24 and step 25 is repeated until it is determined in step 25 that the memory PLAY mode has been released.

As described above, when the designated song is not stored in the memory, the designated song is generated by the random number, and by playing according to the generated designated song, it is displayed whether or not the designated song is stored in the memory. No need, memory PL
When the AY mode is selected, the performance is performed in any case, so that the usability can be improved.

When the memory PLAY mode is released and the memory PLAY mode is resumed, the operation from step 20 is repeated in the same manner as above. At this time, since the pointer in the memory advances to the data next to the previously called data,
The designated song next to the designated song played last time will be played. Therefore, even if the memory PLAY mode is repeatedly selected and released, the songs to be called change sequentially, and the same designated song is not called every time the memory PLAY mode is selected.

This method is not limited to the application to the digital audio disc, and can be applied to the digital audio tape or the like.

Up to now, the case of playing a specified song stored in the memory was explained, but next, the track number (TNO), which is the address information of the song, is changed UP / DOWN by operating the track (+/-) keys. A track search for searching for a song having that track number will be described with reference to the flowchart of FIG. When the track search is started by turning on the track (+/-) key, it is first determined whether or not the memory PLAY mode described above is selected (step 27). If the memory PLAY mode is not selected, While the track (+/-) key is ON, the designated track number is sequentially incremented by +1 or -1 at a constant cycle and displayed on the display 116 (step 28), and the track (+
When the /-) key is turned off, the specified track number finally displayed on the display 116 is searched (step 2
9), start playing.

When it is determined in step 27 that the memory PLAY mode is set, the above-mentioned pointers in the memory are sequentially added +
The value is incremented by 1 or -1 (step 30), and the track (+/-) key is turned off to finally search for the track number designated by the pointer (step 31) to start the performance operation of the designated tune.

In this way, the function that combines the memory PLAY mode and the track search is a new function that has never existed before, and according to this, it is possible to quickly select a desired song among the designated songs stored in the memory. It can be played, and is particularly effective when it is applied to an autochanger that automatically selects a plurality of discs and automatically plays them.

Next, the information detection point of the pickup 117 (spot light)
Is a high-speed reproduction operation in which a jump operation of skipping a certain number of recording tracks of the disk 5 and a reproduction operation are alternately repeated,
That is, for fast forward (FF) and fast reverse (REV) operations,
It will be described according to the flowchart of FIG. By the way, as the address information of a plurality of songs recorded on the disc, in addition to the track number set corresponding to each song, the songs are further subdivided such as a movement in the case of a musical tone. Corresponding to each classification when converted (IX)
And these address information are recorded in the Q channel of the subcode in the so-called CD format,
It can be detected from the read information of the pickup 117.

In FIG. 37, it is first determined whether or not the above-mentioned index (IX) has changed based on the read information from the pickup 117 (step 32). If it is determined that the index (IX) has not changed, then the track number continues. Has been changed (step 33), and if it has not been changed, the track is jumped by a fixed number n (step 34) and the process returns to step 32. If it is determined in step 32 that the index has changed, the playing operation is started. When it is determined in step 33 that the track number has changed, the performance operation is similarly performed.

In this way, by detecting a change in the address information indicating the division of the record information such as the index information or the track number during the FF / REV operation, the FF / REV operation is stopped at that point and the normal reproduction operation is performed. , Even if the user keeps pressing the operation key without observing the reproduced sound intermittently reproduced during FF / REV operation or the change of time information on the display unit, the desired program information can be surely obtained. It is reproduced from the beginning of the song, which enables high operability and reliable and easy retrieval, and is particularly effective in safety in the case of an in-vehicle disc player.

In the special playback mode described above, desired songs are played in an arbitrary order, but it goes without saying that during normal mode playback, the songs are played sequentially from the first song on the disc.

When the carriage 48 reaches the movement limit position after the performance is finished, the carriage 48 and the turntable 45 are stopped, and at the same time, the motor 20 starts the reversing operation. Therefore,
Tray 10, moving member 13, 14, container 22, moving plate 67,
68, the guide member 74, the clamp mechanism, and the like are returned to the positions before the start of the performance by following the process completely opposite to the operation at the time of loading the disc. Also, the carriage 48 can be returned to the home position.

 Thus, the disk 5 is recovered.

By the way, when this disc player is used for a vehicle, as shown in FIG. 38, the control circuit 111 is operated by a backup power source, and each mechanism is turned on (closed) by a so-called accessory switch 125 of the automobile. It is configured to operate with the main power supplied. However, among the various mechanical units, only the loading mechanism 112 can eject (EJECT) the disc loaded in the player even when the main power is turned off.
It is designed to operate with a backup power supply supplied via the auxiliary switch 126. The auxiliary switch 126 is on / off controlled by the control circuit 111.

Regarding the control of the auxiliary switch 126 by the control circuit 111,
As described based on the flowchart of FIG. 39, when the accessory switch 125 is turned off, the Acc voltage detection circuit 12
The detection output of 7 detects that the main power supply is off, and turns off (opens) the auxiliary switch 126 (step 35). In this state, when it is detected that the eject switch 128 is turned on in step 36, the auxiliary switch 126 is turned on (closed) (step 37), and the loading mechanism 11 is turned on.
Supplying backup power to 2 and loading mechanism 1 concerned
Drive 12 (step 38). Then, when the disc eject completion is detected (step 39), the step is restarted.
Returning to 35, the auxiliary switch 126 is turned off.

According to this, even when the accessory switch 125 is off, the disc taken into the player can be ejected, and since it is not necessary to constantly supply the backup power to the loading mechanism 112 when the accessory switch 125 is off, it is possible to save power. Will be realized.

As described above, according to the disc player of the present invention, the reproduction information obtained by the reproduction operation is monitored, and the address information or the program information corresponding to each program information is further subdivided based on the reproduction information. The change in the address information corresponding to the obtained segment is detected, and the high-speed reproduction operation is stopped at the time of detection to shift to the normal reproduction operation, so that the reproduction is performed intermittently during the high-speed reproduction operation. Even if the user keeps pressing the operation key without monitoring the reproduced sound or the change of the time information on the display unit, the desired program information is surely reproduced from the beginning of the music piece, and the operability is high and reliable and easy. This makes it possible to perform various searches and is particularly effective in terms of safety when it is used as a vehicle-mounted disc player.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing the entire auto loading disc player according to the present invention, and FIGS. 2 to 4 are plan views, left side views and right side views of the internal structure of the auto loading disc player, respectively. 5 to 21 are partial detailed views of the internal structure, FIGS. 22 to 28 are views for explaining the operation of the auto loading disc player, and FIG. 29 is a block diagram showing a control system. FIG. 30 is a waveform diagram for explaining the driving method of the solenoid plunger in FIG. 29, FIG. 31 is a block diagram showing the configuration of the carriage servo circuit in FIG. 29, and FIG. 32 is a circuit operation of FIG. 33 to 37 are flow charts for explaining the operation of the control system shown in FIG. 29, and FIG. 38 shows the configuration of the control system when the disc player is mounted on a vehicle. Bu Lock diagram, FIG. 39 is a flow chart for explaining the circuit operation of FIG. 38. Explanation of symbols for main parts 2 …… Housing, 3a …… Slot 5 …… Disk, 7 …… Chassis 10 …… Tray 13,14 …… Movement member 20,51 …… Motor 22 …… Container 33 …… First Gripping member 33d …… Hourglass taper portion 34 …… Second gripping member 42 …… Supporting member, 43 …… Vibration isolating member 45 …… Turntable 46 …… Spindle motor 48 …… Carriage 58 …… Arm member, 60… … Pressing member 78 …… Guide member, 78 …… Lid body 83 …… Solenoid plunger 86 …… Insertion prevention member, 111 …… Control circuit 112 …… Loading mechanism 113 …… Carriage mechanism 117 …… Pickup

 ─────────────────────────────────────────────────── --Continued from the front page Judgment panel for referees Judge General Yasunobu Usuda Judge Eiji Sanyu Judge Takahiro Okada (56) References JP 59-63064 (JP, A) JP 59-127273 (JP, A) ) JP-A-58-122676 (JP, A) JP-B-57-23340 (JP, B2)

Claims (1)

[Claims] 1. A disc on which address information corresponding to program information or address information corresponding to a section obtained by further subdividing the program information is recorded, and an operation key to be pressed when the disc is reproduced at high speed. While the operation key is being pressed, a jump operation in which the information detection point of the pickup jumps over a certain number of recording tracks on the disk and a reading operation in which the information detection point follows the recording track are alternately repeated. In the disc player, the control means monitors the read information obtained by the read operation while the operation key is pressed, and controls the read information based on the read information. Address information corresponding to each program information or a section obtained by further subdividing the program information Detecting a change in the address information corresponding to the disk player, characterized in that allowed to migrate to stop the high-speed reproduction operation at the detection point in the normal playback operation.