JPH08249793A - Multiple disc recording / reproducing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To reduce the disk operation time in a disk changer device having a plurality of pickups. In a changer device for pulling out the first and second discs and reproducing them simultaneously by the first and second pickups respectively, when the first pickup is reproducing the first disc, the second disc When there is a playback command,
The second pickup moves to reproduce the second disc, and the first pickup retreats while reproducing the first disc. This reduced the waiting time from the command to the simultaneous playback of multiple discs. [Effect] The operability and usability of the device are improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-disk recording / reproducing apparatus for extracting a desired disk from a disk storage section in which a plurality of disks are stored, and recording / reproducing information signals to / from the disk. The present invention relates to a means for accelerating the processing time from the disc extraction to the start of recording / reproduction when a plurality of discs are continuously recorded / reproduced by the pickup unit.

[0002]

2. Description of the Related Art Conventionally, as a multi-disk recording / reproducing apparatus of this type, as described in Japanese Patent Application Laid-Open No. 5-89586, a disk tray storing a plurality of disks,
It has a first and a second changer mechanism that takes out a desired disc from the disc tray and plays a disc, and when the next playing disc is designated before the disc playing by the first changer mechanism is finished, There is known a configuration in which the changer mechanism of the player moves to play the disc.

[0003]

In recent years, with the progress of the multimedia society, VOD (video, on, demand) systems such as listening to new CDs at home and calling favorite movies have attracted attention. Taking a bath. And
One of the challenges to realize and popularize this VOD system and CATV system is to process a huge amount of data to be supplied at high speed.

Therefore, a plurality of disk recording / reproducing devices suitable for realizing this VOD system, that is,
Even if it is a multi-disk recording / reproducing apparatus that sequentially or simultaneously reproduces a plurality of discs such as music CDs, video CDs, and DVDs by a plurality of pickups and transmits the data, the operation time from mounting the discs to the reproduction is as long as possible. It is necessary to shorten it.

However, in the conventional technique disclosed in the above-mentioned Japanese Patent Laid-Open No. 5-89586, dedicated positions for playing a disc by the first and second changer mechanisms are provided on both sides of the disc tray. For example, when the next playing disk is specified before the disc is played by the first changer mechanism, the second changer mechanism which should play this disc receives the disc and then once Since the changer mechanism has to move to a dedicated position for playing the disc, it takes time until the disc starts playing, and there is a problem that it is not possible to sufficiently speed up.

An object of the present invention is to wait until a desired plurality of discs are selected from a disc storage unit and a command to record or reproduce the discs sequentially or simultaneously is input until the recording or reproduction is actually performed on the plurality of discs. It is an object of the present invention to provide a multi-disk recording / reproducing apparatus which has a short time.

[0007]

In order to achieve the above object, according to the present invention, a disc storage portion for accommodating a plurality of discs in a stacked manner and a plurality of disc storage portions provided inside the apparatus are provided. In a multiple disc recording / reproducing apparatus comprising a pickup unit for recording or reproducing information signals after pulling out the disc, and a moving means for moving each of the plurality of pickup units in the laminating direction of the discs, First control means for controlling the pickup unit so as to record or reproduce the information signal immediately after pulling out a desired disc, and the pickup unit in a state where the pickup unit records or reproduces the information signal on the disc. Second control means for controlling the moving means so as to move the second moving means.

[0008]

According to the above-mentioned structure, for example, when the two pickup units are provided inside the apparatus and the first and second pickup units are configured to reproduce the disc, respectively, the first pickup unit is After the desired disc is pulled out from the disc storage part and mounted at a predetermined position, the first control means controls the first pickup part so as to directly reproduce this disc, so that the disc is pulled out from the disc storage part. It is played directly and the waiting time can be shortened.

If another disk is designated to be reproduced before the reproduction of the disk by the first pickup section is completed,
The second control means controls the first pickup part to move while the disc is being reproduced so as to move the first pickup part, and the second pickup part is moved to the empty space created thereby to store the disc. Pull out the target disk from the part and put it in place, and
The first control means controls the second pickup unit so as to directly reproduce the disc, and in this state, the plural disc recording / reproducing apparatus supplies the information signals reproduced by the first and second pickup units to the outside. Therefore, continuous playback of different discs or simultaneous playback can be performed with a small waiting time.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. First, the basic configuration of the present invention will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a disc storage portion, and a plurality of optical discs 1a to 1j (optical discs here are music CDs, video CDs, photo CDs, DVDs described later, etc. Disc cartridges 2, 3 and 4 each of which is stored. 100
Is a first pickup unit, 101 is a disk motor that rotates the disk at a high speed, 102 is a turntable, 103 is a clamper that magnetically chucks the turntable 102, and 104 irradiates the disk with light rays. A first pickup for recording / reproducing an information signal (here, a pickup is a multi-pickup capable of reproducing or recording the music CD, the video CD, the photo CD, the DVD, etc.), and 105 is a first pickup 104. The holder 106 is a pin which is a rotation center for rotating the holder 105 in the direction c in the drawing when the disc is inserted into the first pickup unit 100.
Numerals 152 and 153 are rollers for sandwiching the disk, 107 is a control circuit (first control means and second control means) for controlling the first pickup section 100, and 110 is connected to the first pickup section 100. A digital signal processing circuit.

In FIG. 1, reference numeral 200 denotes a second pickup section, which is the first pickup section 100 described above.
Since it has the same configuration as the above, the same parts are denoted by the same reference numerals and the description thereof will be omitted. The first pickup section 100 and the second pickup 200 are movable along the guide shafts 5 and 6 in the direction a or b in the figure.

Now, the first and second pickups 100, 2
00 is at the position shown by the solid line in FIG. 1 (however, this position is not a dedicated position but an arbitrary position). In this state, for example, when there is a command to reproduce the disc 1c and the disc 1d in the disc cartridge 3, the control circuit 107 in FIG. 1 drives and the first pickup unit 100 is moved to the position shown by the dotted line in FIG. The first pickup unit 100 moves along the guide shafts 5 and 6 in the direction a in FIG. 1 in order to control the moving means (not shown) so as to operate up to. Then, when the disc feeding means (not shown) feeds the disc 1c from the inside of the cartridge 3, the disc is moved to the position shown by the dotted line in FIG. 1 by the roller turning means (not shown) for turning the rollers 152 and 153. To the first pickup 104 after this
By operating the holder 105, which is mounted with, for example, in the direction c in the drawing, the disk 1c indicated by the solid line in the drawing is sandwiched and mounted between the turntable 102 and the clamper 103.

Then, from this state, the first control means included in the control circuit 107 is driven to directly rotate the disc 1c at a high speed in the direction d in the drawing, and the first pickup 1
04 is scanned in the radial direction of the disk, and well-known tracking and focus servo are performed to perform disk 1c.
In this state, the second control means included in the control circuit 107 of the first pickup section 100 is driven, and first, the first pickup section 100 at the position shown by the dotted line in FIG. The first moving means (not shown) is controlled so as to move in the direction of b in FIG. 1, and the first high speed rotation operation of the disc 1c, that is, the recording / reproducing operation on the disc 1c is continued. The pickup unit 100 is controlled.

On the other hand, in this state, the control circuit 207 is also driven in the second pickup 200 standing by at the position shown by the solid line in FIG. 1, so that the reproduction of the disc 1d is shown by the dotted line in FIG. After controlling the second moving means (not shown) so as to operate the second pickup unit 200 to the position (actually, the position below the dotted line by one disc), the disc 1d is pulled in, and the turntable is the same as above. By mounting the disc between the 202 and the clamper 203, and thereafter, directly rotating the disc at a high speed, causing the second pickup 204 to scan in the disc radial direction, and controlling to perform known tracking and focus servo. Recording / reproduction of the disk 1d is performed.

Therefore, the first pickup section 100
Disk 1c and second pickup section 20 mounted on
Since the recording / reproducing operation is directly performed on the disc 1d mounted on the disk 0, the operation from the operation command to the recording / reproducing operation can be performed at high speed.

After that, the information signals processed by the first and second pickups 104 and 204 mounted on the first and second pickup units 100 and 200, respectively, are the first and second control circuits, respectively. Information signals are supplied to digital signal processing circuits 110 and 210 via 107 and 207, and in the digital signal processing circuits 110 and 210, the input signals are subjected to digital compression / expansion processing and output. ) Is supplied to each user.

Next, the configuration and operation of the first pickup section will be described in detail with reference to FIGS. 2, 3, 4, and 5.

In FIGS. 2 and 3, 111 is a mechanical chassis constituting the first pickup section 100, and 112 and 1
Reference numeral 13 denotes a side frame, which has bearings 154 and 155 (shown in FIG. 4) that constitute first moving means, and allows the first pickup unit 100 to move along the guide shafts 5 and 6. In the side frame 112, 156 is a motor that constitutes the first moving means, 157.
Is worm, 158 is worm wheel, 159-16
Reference numeral 4 denotes a gear that meshes with each other, and is rotatable by a shaft (not shown). Meshes with gear 164 and rack 8 (shown in FIG. 3) and gear 167 engages rack 9
Mesh with the gear 16 by means of a synchronous shaft 168.
It is one with 5. The gears 161 to 167 and the synchronous shaft 168 enable the first pickup unit 100 to move synchronously. Further, 152 and 153 are the rollers described above, 170 (shown in FIG. 3) is an arm, 171 is a spring, 1
Reference numeral 72 is a pin that allows a disc to be sandwiched between the roller 152 and the roller 153.

In FIG. 3, reference numeral 121 denotes a pin, which engages with an elongated hole 132 of the slider 130, which will be described later, so that the slider 130 can be moved in the h or i direction in FIG.
Reference numeral 122 is also a pin, and by engaging with a first groove 145 of the tray 140 described later, the tray 140 can be moved in the direction f or g in FIG. 116 is a motor 117-
Reference numeral 119 denotes a gear, and the gear 119 meshes with a rack 131 of the slider 130, which will be described later, so that the slider 130
Is driven in the h or i direction in FIG. Also, the gear 119
Engages with a rack 144 of the tray 140 described later to drive the tray 140 in the direction f or g in FIG.

In FIG. 3, reference numeral 105 denotes the above-mentioned holder, which includes the turntable 102 and the first pickup 10.
4, etc. are held and the pin 106 rotates in the direction c in the figure. Reference numeral 123 is a pin that is erected in the holder and fits into the guide groove 133 of the slider 130.

In the slider 130, 131 is the above-mentioned rack, 132 is an elongated hole, and 133 is a guide groove, which is composed of a horizontal groove and an oblique groove and engages with the pin 123 so that the slider 130 can be rotated in the vertical direction. To do. Reference numerals 134 and 135 are pins erected upward, and second recessed grooves 147 and 14 formed on the back surface of the tray 140, which will be described later, respectively.
Fit in 8.

On the front side of the tray 140, 141 is a mounting surface on which a disk is mounted, and 142 is an abutting portion for contacting a disk that horizontally moves on the mounting surface. On the back side of the tray 140, 144 is a rack that meshes with the above-mentioned gear 119, and 145 is the above-mentioned first groove, which is the pin 12.
2 and the tray 140 can be moved in the direction f or g in FIG. Reference numerals 147 and 148 are second grooves, which are formed of a horizontal portion, an inclined portion, and a vertical portion, and are configured to fit the pins 134 and 135 of the slider 130 described above.

Next, the disk mounting operation will be described with reference to FIGS. In each figure, (a) is a top view and (b) is a sectional view taken along line AA.

In FIGS. 4A and 4B, when there is a command to take out the disk 1c from the disk cartridge 3 indicated by the thick solid line, mount it on the first pickup section 100, and reproduce it, the moving means is constituted. Motor 15
6 to worm 157, worm wheel 158, gear 1
59 to 167 and the racks 7, 8, 9 and the like, the first pickup unit 100 moves from the position shown by the solid line in FIG. 1 to the position shown by the dotted line in FIG. 1, that is, the position shown in FIG.
This state is shown in (a) and (b). Therefore, when this state is detected by a sensor (not shown), the arm 150 constituting the disc pushing-out means (not shown) rotates in the j direction around the shaft 151 and moves to the position indicated by the dotted line to move the disc 1c. Is kicked to the position shown by the thick dotted line in FIG. Therefore, when a sensor (not shown) detects this state, the rollers 152 and 153 forming the first pickup section 100 rotate in the k direction shown in FIG. The conveyance operation is performed as indicated by the alternate long and short dash line in (a). In this operation, as shown in FIG.
Reference numeral 173 shown in (b) is a guide member for guiding the upper surface of the disk. Then, while the disk 1c moves from the thick dotted line in FIG.
75 bends as shown by the dotted line to store elastic force,
When the disc exceeds the position indicated by the alternate long and short dash line, the elastic force pushes the disc in the m direction, so that the disc comes into contact with the abutting portion 142 of the tray 140. At the position shown by the thin solid line in FIG. To do.

In FIG. 4A where this operation is completed, in the first pickup section 100, first, the disk is in contact with the elastic body 175, and the slider 130 is in the pin 13 position.
4, 135 and the second recessed grooves 147, 148 of the tray are engaged with each other to provide the position shown in the figure (however, the gear 119 and the rack 13
1 is not engaged with each other), and the tray 140 is in a state of being movable in the m direction in the drawing by the engagement of the gear 119 and the rack 144. Therefore, when a sensor (not shown) detects that this state has occurred, the state of FIG.
The motor 116 shown in (a) is started, and the motor 1 shifts to the gear 1
Tray 1 through 17, 118, 119 and rack 144
4 is driven to move in the direction m in FIG. 4A, the tray 140 moves to the position shown in FIG. 5, and the disk 1c moves from the position shown by the thin dotted line in FIG. 5A to the position shown by the thick solid line. The gear 119 and the rack 144 of the tray are disengaged in this state.

As a result of the movement of the tray 140, as shown in FIG.
As shown in (a), in the first pickup section 100, first, the disk 1c indicated by the thick solid line is the elastic body 1.
When the slider 130 is in a free state after being separated from the pin 75, the pins 134 and 135 are engaged in the horizontal portions from the inclined portions of the second recessed grooves 147 and 148 to move in the i direction in FIG. The guide groove 1 engaged with the pin 123 shown in FIG. 3 by engaging the 119 and the rack 131 and operating in the i direction by the driving force of the motor 116.
The disc 1c is sandwiched between the turntable 102 and the clamper 103 so that the holder 105 having the pickup 104 mounted thereon is rotated about the pin 106 in the c direction in FIG. In this state, the mounting operation of the disc 1c is completed.

Next, another embodiment of the present invention will be described with reference to FIGS.

The configuration shown in FIG. 6 is almost the same as the configuration shown in FIG. The different point is that the configuration shown in FIG. 6 is a configuration in which the second pickup section 200 can reproduce both sides.
That is, in FIG. 6, 1d, which is being pulled out from the cartridge 3 and is about to be reproduced, is a disk (for example, DVD) having a first recording surface and a second recording surface, and 304 in the upper portion of FIG. 6 is the upper surface of the disk 1d. The third pickup capable of recording and reproducing, 305 is a holder, and 307 is a control circuit for controlling the third pickup 304. Therefore, when there is a command to record / reproduce both sides of the disk 1d, the second pickup unit 200 standing by at the upper portion of FIG. 6 moves downward in the direction e in the figure by the moving means (not shown). After standing still at the position indicated by the middle dotted line and carrying the disc 1d by the rollers 252 and 253 as described above, the holder 205 is rotated in the direction c in the drawing to be mounted at a predetermined position, and then the control circuit 207 is used. When the recording / reproducing of the lower surface (first recording surface) of the disk 1d is immediately started and the recording / reproducing of the first recording surface is finished, the control circuit 307 operates to operate the third pickup 304.
Then, the operation for starting the recording / reproducing of the upper surface (second recording surface) of the disk 1d is performed. Even if there is a recording / reproducing command of the disk 1c before the double-sided recording / reproducing of this disk 1d, As shown in the lower part of 6, the first pickup unit 100 causes the control circuit 107 to rotate the disk 1c mounted between the turntable 102 and the clamper 103 at high speed in the direction d in the drawing.
Since the recording / reproducing by 04 and the retreat movement in the direction b in FIG. 6 by the control circuit 107, the operation of simultaneously recording / reproducing the disk 1c and the disk 1d after the command is input can be performed at high speed.

Next, another embodiment will be described with reference to FIG.
The configuration shown in FIG. 7 is also substantially the same as the configuration shown in FIG. 6, except that the configuration shown in FIG.
The point is that 3g and 3j are housed in dedicated cartridges. That is, in FIG. 7, 10a, 10d,
Reference numerals 10g and 10j are cartridges for covering the disks 3a, 3d, 3g and 3j, and upper and lower halves (not shown),
The shutters 11a, 11d, 11g, and 11j open and close windows (not shown) formed in the upper and lower halves, respectively. Since other configurations are the same as those in FIG. 6, the same components are designated by the same reference numerals and the description thereof will be omitted.

The operation will be described. Now, in response to the recording / reproducing command of the disks 1c and 1d, the second pickup section 200 standing by the solid line in the upper part of FIG. 7 descends in the e direction in the drawing by the control circuit 207 and moves along the dotted line in the drawing. Stand still at the indicated position. Then, the cartridge carrying means (not shown) drives the rollers 252 and 253 to carry the cartridge 10d and the shutter 1
1d is opened to expose the disk 3d, and at the same time, the control circuit 207 directly starts recording / reproducing on the lower surface (first recording surface) of the disk 3d, and ends recording / reproducing on this first recording surface. Then, the control circuit 307 operates to control the third pickup 304 to start recording / reproducing on the upper surface (second recording surface) of the disk 3d, thereby recording / reproducing the disk 23 in the cartridge. However, also in this case, similarly to the above, the first pickup unit 100 in the lower part of FIG. 7 records and reproduces the disc 1c by the control circuit 107 and controls the circuit 107.
Since it is retreating in the direction of b in FIG. 7, the disk 1c and the disk 1d are input after the command is input in the same manner as above.
The operation of simultaneously recording and reproducing can be performed at high speed.

[0032]

As described above, according to the multi-disk recording / reproducing apparatus of the present invention, a disk housing portion housing a plurality of disks and a desired disk is pulled out from the housing portion to record / reproduce an information signal. In a multi-disk recording / reproducing apparatus comprising a plurality of pickup sections and a moving means for moving each of the plurality of pickup sections, a desired disk is pulled out from a disk storage section, and then an information signal is directly recorded / reproduced. Since the control means and the second control means for moving the pickup section up and down to retract and move in a state where the pickup section records and reproduces an information signal on and from the disk are provided, a plurality of disks can be loaded from the disk storage section. Waiting time from the command to select and play this sequentially or simultaneously until the actual recording / playback of multiple discs There is an effect that can be shortened.

[Brief description of drawings]

FIG. 1 is a device side view showing the basic configuration of the present invention.

FIG. 2 is a perspective view showing an example of a pickup unit.

FIG. 3 is an exploded perspective view of the configuration of FIG.

FIG. 4 is an operation explanatory view showing an initial state of a disc mounting operation.

FIG. 5 is an operation explanatory view showing a completed state of the disk mounting operation.

FIG. 6 is a device side view showing the basic configuration of another embodiment of the present invention.

FIG. 7 is a side view of the apparatus showing the basic configuration of another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disc storage part, 1c, 1d ... Disc, 100 ... First pickup part (pickup part), 200 ... Second pickup part, 104 ... First pickup, 204 ... Second pickup, 107, 207, 307 ... Control circuit (first control means,
Second control means).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Ikuo Nishida, Inventor Ikuo Nishida, 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa, Ltd., Multimedia Systems Business Department, Hitachi, Ltd. (72) Kohei Takita, 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Address Stock Company, Hitachi, Ltd., Multimedia Systems Business Department (72) Inventor Toshiyasu Sawano, 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa Prefecture, Ltd., Hitachi Media & Video Research Laboratories (72) Inventor, Katsuhiko Izumi Yoshida, Totsuka-ku, Yokohama-shi, Kanagawa 292, Machi Stock Company, Hitachi, Ltd.

Claims (5)

[Claims] 1. A disc storage unit for storing a plurality of discs in a stacked manner, and a pickup unit provided inside the device for recording or reproducing an information signal after pulling out a desired disc from the disc storage unit. A plurality of disc recording / reproducing apparatus comprising moving means for moving each of the plurality of pickup parts in the disc stacking direction, and recording or reproducing an information signal directly after pulling out a desired disc from the disc storage part. First control means for controlling the pickup section so as to control the moving means so as to move the pickup section in a state in which the pickup section records or reproduces an information signal on the disc. And a plurality of disc recording / reproducing apparatus. 2. A disk storage part for stacking and storing a plurality of disks, and a plurality of pickup parts provided inside the apparatus for recording or reproducing an information signal after pulling out a desired disk from the disk storage part. A moving unit that moves the pickup unit in the stacking direction of the discs when at least one pickup unit of the plurality of pickup units is recording or reproducing an information signal on the disc. Characteristic multiple disc recording / reproducing device. 3. A disk storage part for accommodating a plurality of disks each having a second information recording surface opposed to the first information recording surface in a stacked manner, and a plurality of disk storage parts provided inside the device. A pickup unit that pulls out a desired disc and records or reproduces an information signal on the first information recording surface and the second information recording surface; and a moving unit that moves each of the plurality of pickup units in the disc stacking direction. A plurality of disc recording / reproducing apparatus comprising: a first control unit for controlling the pickup unit so as to record or reproduce an information signal immediately after pulling out a desired disc from the disc storage unit; A second control means for controlling the moving means so as to move the pickup section in the state of recording or reproducing the information signal on the disc. A multi-disk recording / reproducing apparatus, characterized in that a step is provided. 4. The disc storage portion according to claim 1, 2 or 3, wherein the discs housed in the upper and lower halves, a window for disc recording and reproduction formed in the upper and lower halves, and the window is opened and closed. A plurality of disc cartridges each having a shutter are stacked and housed, and the plurality of pickup units are provided inside the device.
A multi-disk recording / reproducing apparatus having a structure in which a desired disk cartridge is pulled out from the disk storage unit and an information signal is recorded or reproduced on the disk after the shutter is opened. 5. The multi-disk recording / reproducing apparatus according to claim 4, wherein the disk housing portion is configured to house a plurality of disk cartridges and a plurality of disks in a mixed manner.