JPS61261881A - Picture information processor - Google Patents

Abstract

PURPOSE:To prevent the collision of an optical disk and a head arm without fail by providing an optical detecting means to detect whether or not a head arm assembling body of a information processing unit goes to the outside of the optical disk. CONSTITUTION:By the operation of an operating part, a memory media unit 6 provided with plural optical disks 5 starts to rotate. After a one side reading unit 30 is shifted in the upward direction or in the downward direction and stopped at the prescribed position, a head arm assembling body 31 is shifted in the radius direction of an optical disk 5 and the tip head 48 of a head arm 45 starts the reading action. Other side reading unit 30 comes to be waiting condition, the reading action is completed, then the next reading action is started. By an optical detecting means 79 composed of a light emitting element 77 and a photodetecting element 78, it is detected whether or not a head arm 48 goes to the outside of the optical disk 5, the up and down action of the reading unit 30 is prevented while the head arm 48 is facing to the optical disk 5, and the damage due to the collision of both sides can be prevented without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement of an image information processing apparatus using an optical disk as an information storage medium.

(Technical background of the invention and its problems) Recently, image information processing devices using optical disks as storage media have been able to greatly increase the information storage capacity compared to magnetic image information processing devices that have been widely used in the past. In addition, an extremely good and stable playback condition with little noise can be obtained, and the storage condition is extremely stable as it is not easily affected by external influences.Furthermore, information processing can be performed in a non-contact manner, and the storage medium and information can be processed in a non-contact manner. It is increasingly being used because it has the advantage of not causing any adverse effects such as damage to the processing head.

Furthermore, recently, in order to cope with the increase in the amount of information processing, development of image information processing apparatuses that can handle a plurality of optical disks is underway.

However, in conventional image information processing devices that can handle multiple optical disks of this type, information processing is performed by resetting the optical disks as information storage media one by one using an autochanger. However, there were problems in that the mechanism became complicated, the device became large, and it required a relatively long period of time to replace it.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and an object of the present invention is to have a relatively simple and compact structure that can handle a plurality of optical discs without requiring a large device such as an autochanger. An object of the present invention is to provide an image information processing device that can handle an optical disk in a short amount of time and can reliably prevent collisions between an optical disk and a head arm.

[Summary of the invention]

In order to achieve the above object, the present invention includes a storage medium unit in which a plurality of optical disks are arranged at predetermined intervals on a drive shaft, and while rotating this storage medium unit, the head arm assembly is assembled. and a head arm assembly swinging mechanism are moved in a direction along the drive shaft, and the head arm assembly is moved in a radial direction of the optical disc to perform information processing on the selected optical disc. This image information processing apparatus is provided with an optical detection means for detecting whether or not the head arm assembly of the information processing unit has come out of the optical disc.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows the external appearance of an image information processing device. In the figure, 1 is the main body of the device with a cover 2 on the top. Inside the main body 1 of the device are an optical disk handling mechanism 3 and a control mechanism (not shown). ) is now stored.

As shown in FIG.
. . , and is configured to select a predetermined optical disk 5 and perform information processing while rotating the storage medium unit 6.

In the storage medium unit 6, after the timing disk 7 is fitted onto the drive shaft 4, a plurality of (five in this embodiment) collars 8 and optical disks 5 are alternately fitted onto the drive shaft 4.

Next, after fitting the upper collar 9 onto the outside, the handle 10 is screwed onto the oak 1 to form a unit.

Further, the drive shaft 4 of the storage medium unit 6 has both ends 4
a and 4b are tapered, and one end (lower end) 4a thereof is fitted into the tapered hole 12a of the drive member 12, and the other end (upper end) 4b is fitted into the tapered hole 13a of the holding member 13. By doing so, the drive shaft 4 is held vertically and rotatably.

The holding member 13 that holds the upper end of the drive shaft 4 has its support shaft 13b rotatably held by a bearing 15 provided at the tip of the arm 14.

The arm 14 is rotatable at one end of its base 5 via a support shaft 16, and is always biased in a predetermined direction (in the direction of the arrow in FIG. 2) by a screw spring 17 as a biasing body. The drive shaft 4 is attached with a constant force to keep the rotation of the information storage medium unit 6 stable.

Further, the arm 14 is rotatable in the direction opposite to the arrow direction against the biasing force of the torsion spring 17, so that the holding member 13 can be removed from the upper end of the drive shaft 4 if necessary. It has become. In this state, the information storage medium unit 1 is removed by holding the handle 10 and lifting it upward.
-〇 can be pulled out of the device main body 1 through an opening 19 formed in the upper frame 18.

On the other hand, the drive member 12 that holds the lower end of the drive shaft 4 has its support shaft portion 12b rotatably held by a bearing portion 21 mounted on the lower frame 20, and a gear 25, It is configured to be interlocked with a drive shaft 28a of a motor 28 for driving the storage medium unit via a power transmission system consisting of a toothed belt 26, gears 27, and the like.

In addition, as shown in FIG. 3, there is a structure near the information storage medium unit 6 which is rotationally driven while the drive shaft 4 is held in the vertical direction. A pair of reading units 30, 30 as information processing units are arranged at symmetrical positions.

These reading units 30.30 are attached to a movable member 36 made of an internally threaded member screwed onto a screw shaft 33 rotatably supported by bearings 34.35 provided on both the upper and lower frames 18.20, respectively. It is configured to move up and down in conjunction with the rotation of the screw shaft 33.

These reading units 30, 30 each include a head arm assembly 31 and a head arm assembly swinging mechanism section 32 that swings the head arm assembly 31 by a required amount. Further, the head arm assembly swinging mechanism section 32 is provided with a pair of guide rollers 37, 37, which are in rolling contact with a guide shaft 38 provided parallel to the screw shaft 33 sandwiched therebetween from both sides. The head arm assembly swing mechanism section 32 itself is prevented from rotating about the screw shaft 33. On the other hand, the head arm assembly 31 is rotatably attached to the movable member 36 via a bearing 39, and the head arm assembly 31 is rotated by the action of the head arm assembly swinging mechanism 32. It is configured to swing in the radial direction of the optical disc (in the direction of arrow B in FIG. 3).

Further, the head arm assembly 31 has a configuration as shown in FIG. That is, the reference numeral 45 in the figure is a head arm having a head 48 having a built-in objective lens 46 and a prism 47 that are movable by a lens actuator (not shown) at the tip thereof. It is held by a main member 49 attached to the main member 49. The base end portion of the head arm 45 is rotatably held via a bearing portion 50 provided on the main member 49, and a drive shaft of a head arm rotation motor 51 is attached to the midway portion thereof. A driven gear 54 that interlocks with the driving gear 52 via an intermediate gear 53 is attached. The head 48 is configured to be able to rotate forward and backward by 18 degrees by driving the motor 51 so as to be able to face both sides of the optical disc 5. At this time, the head arm 4 equipped with the head 48
The rotation center of the laser beam 5 and the center of the optical axis of the laser beam a coincide with each other, so that the reading operation is not adversely affected.

The above-mentioned four main members have a λ/4
A plate 55, a polarizing beam splitter 56, a collimator lens 57, and a laser oscillator 58 are arranged, and the laser beam a is guided to the optical disk 5, and the reflected light is deflected by 90 degrees by the polarizing beam splitter 56. It looks like this. A half prism 60°-〇-projection lens 61 and a photodetector 62 are arranged in the direction in which the light reflected by the polarizing beam splitter 56 is deflected to read information and detect track deviation. Roughly speaking, a light projecting lens 63 and a photodetector 64 are arranged in the direction in which the light reflected by the half prism 60 is reflected to detect defocus.

On the other hand, the head arm assembly swinging mechanism 32 has a structure as shown in FIG. That is, the head arm assembly swing mechanism 32 includes the holder 70 and the holder 7.
0 and a near motor mechanism 71.

As described above, the holder 70 is attached to the movable member 36 in a rotation-prevented state by rolling the pair of guide rollers 37 and 37 onto the guide shaft 38, and the linear motor mechanism 71 is rotated in a predetermined manner. yokes 72a172b, 72c arranged at intervals of and a coil 75 wound around this bobbin 74. (See FIGS. 2 and 5) The coil 75 wound around the bobbin 74 is attached to the head arm assembly 31 side,
The head arm assembly is configured to be rotated by a predetermined angle by applying a drive signal voltage to the coil.

Further, the light emitting element 77 and the light receiving element 78 are arranged in such a state that the optical axis intersects with the movement locus of the head arm assembly 31 which is rotated by a predetermined angle by the head arm swinging mechanism 32. , optical detection means 79 for detecting whether or not the head arm 45 has come out of the optical disc 5.
has been configured. (See FIGS. 2 and 3) The head arm 45 is configured to prevent the reading unit 30 from moving up and down while facing the optical disc 5, thereby reliably preventing collision between the two.

Further, a drive system for driving the screw shafts 33, 33 for vertically moving the reading units 30, 30 has the following configuration. That is, as shown in FIG. 2, the lower end of the screw shaft 33 has a drive gear 81 attached to a drive shaft 80a of a motor 80 for moving the reading unit, and a driven gear 8 that interlocks with the drive gear 81 via a toothed belt 82.
3 is now installed. Then, the motor 80 rotates in the forward or reverse direction in response to a movement signal sent from a control section (not shown), thereby rotating the screw shaft 33 in a predetermined direction, causing the reading unit 30 to rotate in a predetermined direction.
is configured to move by a predetermined amount in either the up or down direction (in the direction of arrow C).

Further, the amount of rotation of the screw shaft 33 is detected by a timing desk 85 attached to the screw shaft 33 and a detector 86 attached to the lower frame 20, so that the reading unit 30 can be moved to a predetermined position. At the same time, the brake device 87 prevents inertial rotation of the screw shaft 33, thereby increasing stopping accuracy.

The rotation angle of the storage medium unit 6 is detected by a timing disk 7 attached to the drive shaft 4 and a detector 89 attached to the lower frame 20 via a holder 88. There is. (See FIG. 2) Further, 90 shown in FIG. 1 is an operating section provided at the front end edge of the cover 2 for opening and closing the upper part of the device main body 1.
91 shown in FIG. 2 are guide bodies that guide the insertion and removal of the storage medium unit 6, and these guide bodies 91...
* is placed in a position that does not interfere with the movement of the head arm 45.45.

Next, the operation of the above configuration will be explained.

First, by operating the operating section 90, the optical disk handling mechanism section 3 becomes operable and connected to, for example, a CPU, a display device, a printer device, and the like.

Then, the storage medium unit 6 including the plurality of optical discs 5 starts rotating at a predetermined speed.

On the other hand, in response to an information search signal from a control section (not shown), one of the reading units 3o moves upward or downward (in the direction of arrow C in FIG. 2) and stops at a predetermined position. As the assembly 31 moves in the radial direction of the optical disc 5 (in the direction of arrow B in FIG. 3), the head 48 at the end of the head arm 45 faces the predetermined search information and starts a reading operation.

At this time, another reading unit 30 is in a standby state in advance to read the information of the next selected optical disc 5. Immediately after the reading operation of a predetermined information recording surface is completed, the next reading operation is started.

Further, when the reading unit 30 having the head arm assembly 31 moves up and down, optical detection is performed by arranging a light emitting element 77 and a light receiving element 78 in a state where the movement locus of the head arm assembly 31 and the optical axis intersect. The means 79 detects whether the head arm 48 has come out of the optical disc 5 or not, and prevents the reading unit 30 from moving up and down while the head arm 48 faces the optical disc 5, thereby ensuring damage caused by collision between the two. This will be prevented.

Furthermore, if the information recording surface of the optical disc 5 being read is adjacent to the information recording surface of the optical disc 5 to be read next, for example, the information recording surface on the bottom side of the optical disc 5 second from the top in FIG. When reading the information on the upper information recording surface of the third optical disc 5 from the top, the same reading unit 30 is used as is, and the head arm 45 is simply rotated 180 degrees to read the information. .

In addition, when replacing the information storage medium unit 6 for some reason, after opening the cover 2, move the arm 14 in the direction opposite to the arrow in FIG. 2 against the biasing force of the biasing body 17. By rotating, the holding member 13 is removed from the upper end of the drive shaft 4. Next, hold the handle 10 attached to the upper end of the information storage medium unit 6 and pull it upward.

It goes without saying that at this time, the head arms 45, 45 of both reading units 30, 30 are automatically retracted in advance to a position where they will not collide with the optical disk 5.

〔Effect of the invention〕

As explained above, the present invention includes a storage medium unit in which a plurality of optical disks are arranged at predetermined intervals on a drive shaft, and while rotating this storage medium unit, the head arm assembly and head An image in which information processing on a selected optical disk is performed by moving an information processing unit comprising an arm assembly swinging mechanism in a direction along the drive shaft and moving the head arm assembly in a radial direction of the optical disk. An information processing device,
An optical detection means is provided for detecting whether or not the head arm assembly of the information processing unit has come out of the optical disc. Therefore, it is possible to hold and handle multiple optical discs in a short amount of time with a relatively simple and compact configuration without the need for a costly device such as an autochanger, and moreover, it is possible to securely prevent collisions between the optical disc and the head arm. This has the advantage that it is possible to provide an image information processing device that can prevent such problems.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an external perspective view of an image information processing device, FIG. 2 is a schematic side view showing the configuration of the main desk handling section, and FIG. 3 is a plan view showing the arrangement of the reading unit with respect to the optical disk, FIG. 4 is a partially cutaway plan view of the head arm assembly of the reading unit, and FIG. 5 is a swing mechanism of the head arm assembly of the reading unit. FIG. 4... Drive shaft, 5... Optical disk, 6... Storage medium unit, 12... Drive member, 13...
Pressing member, 30...Reading unit, 31...
Head arm assembly, 32... Head arm assembly swinging mechanism section, 79... Optical detection means. Applicant's agent Patent attorney Takehiko Suzue Figure 1

Claims (2)

[Claims] (1) A storage medium unit including a plurality of optical disks arranged at predetermined intervals on a drive shaft, and a head arm assembly and a head arm assembly swinging mechanism while rotating this storage medium unit. An image information processing apparatus that processes information on a selected optical disc by moving an information processing unit comprising: in a direction along the drive shaft and moving the head arm assembly in a radial direction of the optical disc. An image information processing apparatus comprising: an optical detection means for detecting whether the head arm assembly of the information processing unit has come out of the optical disc. (2) A plurality of information processing units are provided for one storage medium unit, and an optical detection means for detecting whether or not the head arm assembly has protruded outside the optical disk is arranged at the location of each information processing unit. An image information processing apparatus according to claim 1, characterized in that: