JPH0525083Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to disc players such as video disc players and CD players.

[Summary of the idea]

an operating knob that reciprocates approximately in a straight line or approximately on an arc so that it can move from the neutral position in a first direction and can also move from the neutral position in a second direction opposite to the first direction; and a control means for controlling the operation of the disk drive means and the information detection means drive means in accordance with the movement state of the operation knob, and the disk drive means is configured such that the operation knob is in the first position. The information detecting means driving means rotates the disk at a rotational speed corresponding to the amount of movement when the disk is moved in either direction and the second direction.
When the operating knob moves in the first direction, the information detecting means is moved in the forward direction, and when the operating knob moves in the second direction, the information detecting means is moved in the opposite direction. A device related to a disc player that allows the search to be performed extremely easily while arbitrarily changing the playback direction and playback speed when searching for a disc while monitoring the playback image or playback sound. It is.

[Conventional technology]

Information signal reproducing devices such as video disc players and VTRs are provided with a search mode function for locating a desired cue on a recording medium. This search mode includes a method of specifying an address assigned to a recording medium, and a method of forwarding or reversing the recording medium while looking at the playback screen to reach a desired screen.

When searching while looking at the playback screen mentioned above, if the playback speed is constant during forward or backward playback, the search becomes difficult and wastes time, so it is recommended to make the playback speed variable. ing. In the case of a VTR, for example, a control knob such as a jog stake is provided, and the playback speed can be arbitrarily changed according to the operation of this knob. Therefore, for example, at the beginning of a search, the playback speed is increased to quickly reach the desired screen, and then the playback speed is slowed down.
It is possible to accurately reach the desired screen. In addition, a method has been proposed in which a timer is used to change the playback speed in two to three steps at predetermined time intervals.

[Problem that the invention attempts to solve]

The above-described method of changing the playback speed using a control knob has been implemented in VTRs and the like, but if this method were applied to a video disk player, the device would become large-scale, leading to an increase in cost. Also, when searching with the remote control,
This causes inconveniences such as an increase in the space occupied by the commander's operation panel.

Furthermore, the above-described method using a timer has the disadvantage that the stepwise change in playback speed is limited to a fixed pattern, and therefore it is not possible to set an arbitrary speed during the search.

[Means for solving problems]

The disk player according to the present invention includes a first drive means for rotationally driving the disk, an information detection means for reproducing information signals recorded on the disk, and a first drive means for rotating the disk, an information detection means for reproducing the information signal recorded on the disk, and a first drive means for driving the disk in a radial direction of the disk. a second driving means for selectively moving forward and backward relative to the neutral position; and a second drive means movable from the neutral position in a first direction and opposite the first direction from the neutral position. a slide switch having an operation knob that reciprocates on a substantially straight line or on an arc so as to be able to move in a direction of and control means to do so. The first driving means rotates the disk at a rotational speed corresponding to the amount of movement of the operating knob when the operating knob moves in either the first direction or the second direction. This is controlled by the above control means.
Further, the second driving means moves the information detecting means in the forward direction when the operating knob moves in the first direction, and the information detecting means moves the information detecting means in the forward direction when the operating knob moves in the second direction. The detection means is controlled by the control means to move in the opposite direction.

[Effect]

According to the present invention, when the operating knob of the slide switch is moved from the neutral position to the first direction, forward playback of the disc can be performed. You can get the playback speed. On the other hand, when the operating knob is moved from the neutral position to a second direction opposite to the first direction, the disc can be played in the reverse direction. You can obtain a playback speed that corresponds to the amount of movement.

〔Example〕

FIG. 1 shows a slide switch used in an embodiment of the present invention.

In FIG. 1, a case 1 is provided with an operating knob 2 held in a neutral position by being held between a pair of springs 3 and 4 from both sides thereof. A click protrusion 5 is provided on the side of the operation knob 2, and the protrusion 5 is provided on the inner wall of the case 1.
six click recesses 6 that are selectively locked;
~11 are provided. Six pairs of fixed contacts 13 to 18 are provided on the substrate 12 arranged below the case 1, and three of these fixed contacts are located on the left side of the operating knob 2. ,
The remaining three sets are arranged on the right side of the operating knob 2. Further, the operating knob 2 is provided with a movable contact 19, which together with the fixed contacts 13-18 form switches _S1 - _S6 .

According to the above configuration, the operating knob 2 is held in a well-balanced manner substantially in the center of the case 1 by the elasticity of the pair of springs 3 and 4 in the illustrated neutral position.
Then, when the operating knob 2 is slid in the direction of arrow g from this neutral position, the movable contact 19 contacts the fixed contacts 13, 14, and 15 in sequence, and the switches _S1 ,
Turn on S ₂ and S ₃ in sequence. For this reason, the playback speed can be switched to any one of three stages while performing forward playback.

Also, move the operation knob 2 from the neutral position to the arrow h in the figure.
When the switch is slid in the direction, the movable contact 19 contacts the fixed contacts 16, 17, and 18 in sequence, and the switch is turned off.
Turn on S ₄ , S ₅ , and S ₆ in sequence. For this reason, the playback speed can be switched to any one of three stages while performing reverse playback.

Therefore, forward playback and backward playback can be selected by sliding direction g or h of the operation knob 2, and the playback speed can be varied according to the sliding amount.

FIG. 2 shows an embodiment in which the present invention is applied to a video disc player using the slide switch shown in FIG.

In FIG. 2, a video disk 20 is rotationally driven by a spindle motor 21. As shown in FIG. The motor 21 is controlled by a servo circuit 22 so that its rotational speed does not vary. Above disk 2
An optical or capacitive pickup device 23 for reproducing 0 is provided so as to be movable in the radial direction of the disk 20 as indicated by arrows c and d by a motor 24. The reproduced signal from the pickup device 23 is subjected to predetermined processing in the signal processing circuit 25 and then detected in the video detection circuit 26, so that the video detection circuit 26 outputs the video output signal _S0 .

Further, the aforementioned switches S ₁ to _{S 6} are connected to the system controller 27 . The system controller 27 turns the switches S1 to S6 on and off.
A control signal S _C1 is sent to the motor 24 depending on the OFF state (that is, the movement state of the operating knob). For this purpose, the pick-up device 23 is
is sent in the direction of arrow c or d, so the playback screen can be sent forward or backward. System controller 27 is switch S ₁
A control signal S _C2 is sent to the servo circuit 22 depending on the ON/OFF state of _S6 . For this purpose, the servo circuit 22 adjusts the rotational speed of the motor 21 by 3 in accordance with the amount of movement of the operating knob 2 of the slide switch.
Can be switched in stages.

The above is a case where the present invention is applied to a video disc player, but it is also possible to apply the present invention to an audio reproduction disc player such as a CD player.

Incidentally, the above-mentioned slide switch shown in FIG. 1 can be arranged in the remote control commander 29 together with other operation buttons 28, etc., as shown in FIGS. 3A and 3B. In FIGS. 3A and 3B, 31 is a slit provided in the commander 29 to move the slide knob 2 in the directions of arrows g and h. In this case, as shown in figure A,
If the stroke L ₁ of the commander 29 is lengthened and the commander 29 is arranged horizontally, the width of the commander 29 will naturally become larger. For this reason, when the commander 29 is held in the hand 30 as shown in the figure, it is difficult for the fingers to fully reach the entire width of the operation knob 2, so the commander 29 cannot be held firmly in the hand.

Also, as shown in figure B, the stroke of operation knob 2
By shortening _L2 and arranging it horizontally, the width of the commander 29 becomes narrower, making it easier to hold it firmly in your hand. However, in this case, the six switches
Since there is no space to provide a large number of switches such as _S1 to _S6 , it is necessary to reduce the number of playback speed changes.

4A to 4E each show an embodiment in which the operation knob 2 of the slide switch is arranged more effectively in order to solve the above-mentioned problems.

Figure A shows the operation knob 2 with the slit 31 vertical.
This shows the case where the stroke is vertical. Figure B shows the case where the stroke is tilted linearly upward to the right. C in the same figure shows the case where the stroke is tilted upward to the right in an arc shape. Figure D shows the case where the stroke is tilted linearly upward to the left. Further, E in the same figure shows the case where the stroke is tilted in an arc shape upward to the left.

According to the above-described embodiment shown in FIGS. _4A to _4E , the commander 2
9 can be set to an appropriate size that is easy to hold in the hand. In addition, B and C in the same figure are for right-handed users, and D and E in the same figure are for right-handed users.
is suitable for use with the left hand, and A is suitable for both left and right hands.

[Effect of idea]

According to the present invention, when the operation knob of the slide switch is moved from the neutral position to the first direction, forward playback of the disc can be performed. When the playback speed is obtained and the operating knob is moved from the neutral position to a second direction opposite to the first direction, the disc can be played in the reverse direction, and also in this case. , a playback speed corresponding to the amount of movement of the operation knob can be obtained. Therefore, when you want to cue a desired disc while looking at the playback screen or listening to the playback sound, it is possible to move one operation knob of the slide switch from the neutral position to the first direction or the opposite direction from the first direction. It is possible to arbitrarily select either forward playback or backward playback by simply moving the playback device in the second direction on a substantially straight line or on a substantially circular arc.
Since the playback speed can be changed arbitrarily, the beginning of the disc can be quickly and efficiently performed with simple operations. Further, since the slide switch occupies a small area, it is suitable for being placed in a commander of a remote control device, etc.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a slide switch used in an embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment in which the present invention is applied to a video disc player.
FIG. 3 is a front view showing the normal arrangement of the operating knobs of the slide switch in the commander used in the video disc player shown in FIG. 2, and FIG. 4 shows the more effective arrangement of the operating knobs. FIG. In addition, in the symbols used in the drawings, 1... case (member on the fixed side of the slide switch), 2...
Operation knob, S ₁ to _{S 6} ... Switch, 12 ... Board (fixed side member of slide switch), 13 to 18
... Fixed contact, 19 ... Movable contact, 20 ... Video disk, 21 ... Spindle motor (first drive means), 23 ... Pickup device (information detection means), 24 ... Motor (second drive means) means), 2
7...System controller (control means).

Claims (1)

[Claims for Utility Model Registration] 1. A first drive means for rotationally driving the disk; an information detection means for reproducing information signals recorded on the disk; a second drive means for selectively moving in the forward and reverse directions with respect to the radial direction; Second
a slide switch having an operation knob that reciprocates in a substantially straight line or on an arc so as to be able to move in the direction of and a control means, and the first driving means has a rotational speed corresponding to the amount of movement of the operating knob when the operating knob moves in either the first direction or the second direction. to rotate the above disk,
The second drive means is controlled by the control means, and when the operation knob moves in the first direction, the information detection means is moved in the forward direction, and the operation knob is moved in the second direction. When the information detecting means is moved, the information detecting means is moved in the opposite direction.
A disc player characterized in that it is controlled by the above control means. 2 The slide switch has a spring that holds the operation knob from both sides, a click protrusion provided on the operation knob, and a click protrusion provided on the fixed side member of the slide switch that selectively engages. a plurality of click recesses;
The slide switch includes a fixed contact provided on the fixed side member, and a movable contact provided on the operating knob so as to change the state of contact with the fixed contact as the operating knob reciprocates. A disc player according to claim 1 of the utility model registration claim.