JPH0525084Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a video disc player.

[Summary of the idea]

The present invention comprises: a first motor that rotates a disk; a pick-up device that faces the disk and reproduces a signal; and a second motor that moves the pick-up device in the radial direction of the disk.
coupled to the system controller to generate at least two forward control signals sequentially in response to the amount of movement in the first direction; and to generate at least two control signals for reverse feed sequentially in response to the amount of movement in the second direction; This relates to a video disc player equipped with a switch that generates a playback signal, and allows the search to be performed while changing the playback speed when searching for a recording medium while monitoring the playback image or playback sound. .

[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.
There are two search modes: one is to specify an address attached to a recording medium, and the other is to reach a desired screen by moving the recording medium forward or backward while viewing the playback screen.

If you want to search while watching the playback screen above,
If the playback speed is constant during forward and reverse playback, searching becomes difficult and wastes time, so the playback speed is made variable. In the case of a VTR, an operating knob such as a jog stake is provided, and the playback speed can be changed arbitrarily according to the operation of this knob. With this, for example, at the beginning of a search, the playback speed can be increased to quickly reach the vicinity of the desired screen, and then the playback speed can be slowed down to accurately reach the desired screen. can.
In addition, a method has been proposed in which, for example, 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]

How to change the playback speed using the above operation knob,
Although this method has been implemented in VTRs and the like, if this method were applied to video disc players, the equipment would become large-scale, leading to an increase in cost. Furthermore, when searching with a remote control, there are inconveniences such as an increase in the space occupied by the commander's operation panel. Further, the method using the timer has the drawback that the stepwise change in playback speed is limited to a fixed pattern, and an arbitrary speed cannot be set during the search.

[Means for solving problems]

In this invention, the first
a motor, a pick-up device that faces the disk and reproduces a signal, a second motor that moves the pick-up device in the radial direction of the disk, and a second motor that is coupled to a system controller and that operates according to the amount of movement in the first direction. and a switch that sequentially generates at least two control signals for forward feed according to the amount of movement in the second direction, and a switch that sequentially generates at least two control signals for reverse feed according to the amount of movement in the second direction.

[Effect]

By operating the switch during the search, the playback speed can be arbitrarily set in multiple stages, so that the desired cue of the recording medium can be efficiently found.

〔Example〕

FIG. 1 shows a first embodiment using a tact switch.

In FIG. 1, a forward feeding pressing section 1 and a reverse feeding pressing section 2 are integrally provided on a support member 3. The support member 3 includes three leaf spring members 5, 6, 7.
are integrally installed at different heights. These leaf spring members 5, 6, 7 have pressing protrusions 5a, 5b, 6a, 6b, 7 on both ends thereof.
a, 7b are formed. The above pressing parts 1, 2,
The leaf spring members 5, 6, and 7 are configured to be rotatable in stages in the directions of arrows a and b using a fulcrum member 8 provided on the support member 3 as a fulcrum.

Moreover, the above-mentioned pressing protrusions 5a, 5b, 6a, 6b,
There are 6 tact switches below each of 7a and 7b.
S ₁ , S ₂ ...S ₆ are arranged.

According to the above configuration, when the pressing part 1 is pressed in the direction of the arrow a, the protrusion 7a turns on the switch S1 in the first stage, and the protrusions 7a and 6a turn on the switch _S1 in the next stage.
turns on switches S ₁ and S ₂ , and in the final stage, protrusions 7a, 6a, and 5a turn on switches S ₁ , S ₂ , and S _3.
Turn ON. This allows the playback speed of the pickup device or recording medium to be increased by 3 times while feeding it in the forward direction.
The steps can be switched arbitrarily.

Further, when the pressing part 2 is pressed in the direction of arrow b, the protrusion 7b turns on the switch _S4 at the initial stage.
In the next step, protrusions 7b and 6b switch switches S ₄ and S ₅ .
ON, and in the final stage protrusions 7b, 6b, 5
b turns on switches S ₄ , S ₅ , and S ₆ . As a result, the playback speed can be arbitrarily switched between three stages while the pickup device or the recording medium is being fed in the reverse direction. Further, by selecting the pressing portions 1 and 2, the moving direction of the pickup device or the recording medium can be arbitrarily selected.

FIG. 2 shows an embodiment in which the first embodiment is applied to a video disc player.

In FIG. 2, a video disk 10 is rotationally driven by a spindle motor 11. As shown in FIG. The motor 11 is controlled to have a constant rotational speed by a servo circuit 12. Optical or capacitive pickup device 13 for playing the disc 10
is driven by the motor 14 to the disk 1 indicated by arrows c and d.
It is provided so as to be movable in the radial direction of 0. The reproduced signal from the pickup device 13 is subjected to predetermined processing in a signal processing circuit 15, and then detected in a video detection circuit 16 to obtain a video output signal _S0 .

Further, the aforementioned switches S ₁ to _{S 6} are connected to the system controller 17 . The system controller 17 sends a control signal Sc ₁ to the motor 14 according to the states of the switches S ₁ to S ₆ . This causes the pick-up device 13 to be sent in the direction of arrow c or d, allowing the playback screen to be sent forward or back. At the same time, the system controller 17 sends a control signal _Sc2 to the servo circuit 12 according to the states of the switches _S1 to _S6 , thereby allowing the servo circuit 12 to switch the speed of the motor 11 in three stages.

The above is a case where the present invention is applied to a video disc player, but when the present invention is applied to a VTR, the speed of the magnetic tape is changed in three steps, and the running direction of the magnetic tape is changed. , forward playback and backward playback can be selected.

FIG. 3 shows a second embodiment of the invention using a rotary switch.

In FIG. 3, the rotational operation section 19 for forward feeding and the rotational operation section 20 for reverse feeding are integrally formed,
It is provided so as to be rotatable about the fulcrum member 21 in the directions of arrows e and f. These operation parts 19 and 20 are integrally provided with a movable part 24 provided with two protruding contacts 22 and 23. This movable part 2
A common contact portion 25 having an arc shape is disposed below the common contact portion 25, and six fixed contacts 26 to 31 are disposed around the common contact portion ₂₅ . Forming _S6 .

According to the above configuration, by rotating the operating portion 19 together with the operating portion 20 in the direction of the arrow e from the position shown in the figure, the switch S ₁ is first turned on, and then the switches S ₂ and S ₃ are turned on in that order. Thereby, the playback speed can be arbitrarily switched to three stages while performing forward playback.

Further, by rotating the operating section 20 together with the operating section 19 in the direction of the arrow f from the position shown in the figure, first the switch _S4 is turned on, and then the switches _S5 and _S6 are turned on in that order. Thereby, while performing reverse playback, the playback speed can be arbitrarily switched to three levels. Furthermore, forward playback and backward playback can be selected by rotating the operating units 19 and 20.

In addition, in the case of this second embodiment, the switches S ₁ to _{S 6}
Since one of them is selectively turned on, the system controller 17 shown in FIG. 2 is of course configured to make logical judgments accordingly.

FIG. 4 shows a third embodiment of the present invention in which a slide switch is used.

In FIG. 4, a slide knob 33 is provided on the case 32 and is held between springs 34 and 35 on both sides thereof. A click protrusion 36 is provided on the side of the knob 33, and six click recesses 37 to 42 are provided on the inner wall of the case 32, in which the protrusion 36 is selectively engaged. . On the board 43 arranged below the case 32,
Contact portions 44 to 46 on the left and right with respect to the knob 33,
47 to 49 are provided in three pairs each. The knob 33 is also provided with a movable contact portion 50, which together with the contact portions 44-49 form switches _S1 - _S6 .

According to the above configuration, the knob 33 is balanced approximately at the center of the case 32 by the elasticity of the springs 34 and 35 at the illustrated position. When the knob 33 is moved in the direction of arrow g from this state, the movable contact 50 contacts the contacts 44, 45, and 46 in sequence, and the switches _S1 ,
S ₂ and S ₃ are turned ON sequentially. As a result, the playback speed can be arbitrarily switched to three stages while performing forward playback.

Furthermore, when the knob 33 is moved in the direction of the arrow h from the illustrated position, the movable contact 50 moves to the contacts 47, 48, 4.
9, switches S ₄ , S ₅ , and S ₆ sequentially touch
It is made ON. This allows the playback speed to be arbitrarily switched between three stages while performing reverse playback.

Further, forward playback and backward playback can be selected by the sliding direction of the knob 33.

The first to third embodiments described above are cases where the present invention is applied to a video signal reproducing device such as a video disc player or a VTR, but each embodiment is applied to an audio reproducing device such as a tape recorder or a CD player. It is also possible to apply

[Effect of idea]

When searching for a desired cue on a recording medium while looking at the playback screen or listening to the playback sound,
Just by operating one operation knob, you can play forward,
Since reverse playback can be selected and the playback speed can be arbitrarily changed in multiple stages, cueing can be performed quickly and efficiently. Furthermore, since the switch occupies a small area, it can be placed in a commander of a remote control device, etc.

[Brief explanation of drawings]

FIG. 1 is a side view showing the first embodiment of the present invention;
FIG. 2 is a block diagram of the present invention applied to a video disc player, FIG. 3 is a plan view of the second embodiment, and FIG. 4 is a perspective view of the third embodiment. In addition, in the symbols used in the drawings, 1...pressing part for forward feeding, 2...pressing part for reverse feeding, 5, 6, 7...
...Plate spring, _S1 to _S6 ...Switch, 10...Video disk, 12...Spindle motor, 13...
These are a pickup device, 14... a motor, and 17... a system controller.

Claims (1)

[Claims for Utility Model Registration] A first motor that rotates a disk; a pick-up device that faces the disk and reproduces a signal; a second motor that moves the pick-up device in a radial direction of the disk; coupled to the system controller to generate at least two forward control signals sequentially in response to the amount of movement in the first direction; and to generate at least two control signals for reverse feed sequentially in response to the amount of movement in the second direction; A video disc player comprising: a switch that generates a video disc; and by applying the forward and reverse control signals to the second motor, it is possible to perform forward playback or reverse playback in response to the operation of the switch.