JPS5833554B2 - Remote control device for magnetic recording/reproducing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote control device for a plurality of magnetic recording and reproducing machines for learning, and particularly when controlling each magnetic recording and reproducing machine individually, and when controlling simultaneously by each learning material selected by a learner. This relates to switching the selection method when performing remote control.

In general, a group language practice device consists of a main control console used by a teacher, a plurality of teaching material sending devices that send out video or audio teaching materials, and a magnetic recording/reproducing device for learners.

In many cases, magnetic recording and reproducing devices for learners (audio tape recorders, VTRs, etc.) can be operated individually, such as recording, playing, stopping, and rewinding, and can also be controlled remotely from the teacher's main control console. It is designed so that it can be carried out at

However, conventionally, these remote control methods have been either simultaneous control, in which multiple magnetic recording/reproducing devices in a classroom are controlled to be in the recording state or playback state at the same time, or A method was used in which multiple magnetic recording and reproducing machines were divided into several fixed groups of 2 to 4 and each was controlled separately by remote control.In this method, the groups were fixed, and therefore the seats in the classroom were Because the arrangement was all fixed, there was no flexibility in dividing learners into groups, making it very clumsy.

On the other hand, when the teacher was exercising control over the course of time, there were cases in which individual learners ended up performing different controls.

The present invention aims to eliminate the above-mentioned drawbacks, and consists of forming groups according to the teaching materials selected by the learner, remotely controlling the magnetic recording and reproducing machine for each group, that is, for each teaching material, and -
This system distinguishes between simultaneous control and control on individual magnetic recording/reproducing machines, and prevents learners from performing control while simultaneous control is being performed from the teacher's desk.

Embodiments of the present invention will be described below with reference to the drawings.

In the drawing, reference numeral 101 surrounded by a dashed line is a magnetic recording/reproducing machine for learners, which allows selection and listening of teaching materials sent from the main control console, and remote control of functions such as recording, playback, stop, rewind, and fast forward. It is.

On the other hand, the main control console side has a teaching material sending means 102, a remote control number setting means 103, and a remote control function selection means 104.

In the embodiment, the teaching material sending means 102 includes four types of teaching material sending devices 102a, 102b, 102c, and 102d.

Magnetic recording and reproducing machines, magnetic recording and reproducing machines, record players, etc. are often used as teaching material sending devices.

Further, the remote control number setting means 103 is a group of switches for selecting and setting which of the four types of teaching materials mentioned above is to remotely control the magnetic recording/reproducing machine for the selected learner. It is possible to select from four types b, c, and d, that is, as many as the number of teaching materials.

In this construction, switch a is intended to remotely control the magnetic recording and reproducing machine that selects the teaching material sent out from the teaching material sending device 102a, and switches b, c, and d are used to control the teaching material sending device 102 b t 102 c, respectively. t 102 d.

In the embodiment, switch b is in the selected state.

Any one or all of these switches can be selected at the same time.

Further, the remote control function selection means 104
A group of switches for selecting the operating functions of 01, in the example, playback (PLAY), rewind (REW), and stop (STOP).
You can select from three functions.

That is, only the magnetic recording/reproducing machine that has selected the teaching material corresponding to the number set by the remote control number setting means 103 can be made to operate the function selected by the remote control function selection means 104. Now play (PLAY)
) switch is selected.

From the above explanation on the main control console side, it can be seen that the magnetic recording/reproducing machine selecting the teaching material 11211 must be in the playback (PLAY) state.

Next, the operation of the magnetic recording/reproducing machine 101 will be explained by the teaching material sending means 102 and the remote control number setting means 103 on the main control console side.
and in relation to the remote control function selection means 104.

The magnetic recording/reproducing device 101 includes a teaching material selection means A 105-a, a teaching material selection means B 105-b that switches in conjunction with the teaching material selection means A 105-a, and amplifies the teaching material selected by the teaching material selection means A 105-a. amplifier 10
6 and gate circuit group 111, built-in control switch group 112
, control function storage means 108, 109, and 110.

In the embodiment, control function storage means 108, 109, and 110 are represented as flip-flops that are a combination of gate circuit elements, and among these control function storage means, flip-flop 108 stores the reproduction state.

Similarly, the flip-flop 109 stores each state of rewind (REW) and stop (STOP).

To set the flip-flops 108, 109, and 110, a trigger input is input to the S terminal side of the input terminal of each flip-flop.

In the case of the embodiment, the trigger signal level is negative (OV = L).
The flip-flop is set (ON) by applying a trigger signal of "level".

Setting the flip-flop 108 manually S1. S2 is connected to the output of the gate G1 of the gate circuit group 111 and the switch SWI of the built-in control switch group 112, and is connected to the terminal S
Flip-flop 108 is set when either S1 or S2 becomes negative (P L'' level).

On the other hand, the input terminal M of the gate G1 has a teaching material selection means B10.
The signal selected in step 5-b is applied through the inverter circuit 107, and the terminal N is connected to the remote control function selection means 104.
The signal selected by the playback (PLAY) switch is applied.

Since the gate circuit of the embodiment uses a NAND gate element, when a positive voltage is applied to both inputs (+Bv is a high level), a negative voltage is applied to the output (OV is a low level). arise.

Also, either one of the inputs is ``L'' level or both inputs are ``L'' level.
If it is at 'L' level, the output will be at 'H'' level,
The flip-flop is not set.

Now, as shown in the drawing, remote control number setting means 103
When the switch b of is on the ground potential side, that is, n L tt level, and the teaching material selection means B 105b selects number 2, the manual power of the inverter 1070 is ° + L t”
And its output is '''HnHn level.

Therefore, all the gates Gl of the gate circuit group 111
The input terminals M of j G2 and G3 are at H'' level.

At the same time, SWt j SW2 of built-in control switch group 112
The potential on the fixed contact a side of t SW3 is also at tl HII level.

In this state, when an arbitrary function of the remote control function selection means 104, such as the playback (PLAY) switch, is switched to the 10B potential side, both the M and N input terminals of the gate G1 are set to +1.
The level becomes Hl+, and its output becomes Q L I+, setting the flip-flop 108 and putting the magnetic recording/reproducing machine into the reproducing state.

At this time, since the fixed contact side of the control switch group 112 is at the "H" level, no matter which switch is turned on, the flip-flop is not affected at all.

Therefore, the learner cannot freely control the magnetic recording/reproducing machine.

Next, if all the switches of the remote control number setting means 103 are on the +B side, or even if any switch is turned on, the number does not match the number selected by the teaching material selection means B105-b, the inverter 1070 The input is "H" level and its output is "L" level.

Therefore, since all gates in the gate circuit group 111 are in the cutoff state, the output of all gates is always tl H1 level no matter which switch of the remote control function selection means 104 is changed. Unable to control magnetic recording/playback device.

However, all the fixed contacts a side of the control switch group 112 are at the 11 L'' level, and when any one of these switches, for example switch Sw1, is turned on, the flip-flop 108 is set and the magnetic recording/reproducing device is turned on. is in the playing state.

In this case, the learner can freely control the magnetic recording/reproducing machine using the control switch inside the machine.

Gate G2. Similar operations are performed for G3, control switches SW2 j SW3, and flip-flops 109 and 110.

As detailed above, in the present invention, when the teaching material number selected by the learner matches the remote control number set on the main control console, remote control such as playback, rewind, and stop is performed. can.

This function has the following features.

1. Learners can freely select teaching materials, so they can change to a different group by simply changing the teaching materials they select within the same seat.

Traditional fixed groups require changing seats.

2 Therefore, the number of people who make up a group is always in flux.

3. Simultaneous remote control of each group, centering on teaching materials, is possible.

4. During remote control, the learner cannot control the device freely, so it is possible to prevent erroneous operations such as rewinding while recording the teaching material.

5. Learners can freely control magnetic recording and reproducing machines that belong to the group that does not involve remote control.

[Brief explanation of the drawing]

The drawing is a circuit system diagram showing an embodiment of the present invention. 101... Magnetic recording/reproducing machine, 102...
- Teaching material sending means, 103...Remote control number setting means, 104...Remote control function selection means, 10
5-a. 1os-b... Teaching material selection means, 108, 10
9. 110... Control function storage means, 111...
...Gate circuit group, 112...Switch group.

Claims (1)

[Claims] 1. Magnetic recording and reproducing means capable of remote control of recording, playback, stop, rewind, fast-forward, etc.; at least two systems of audio or video signal transmission means; and a plurality of teaching materials sent from the teaching material transmission means. a fourth teaching material selecting means for selecting a signal; a second teaching material selecting means interlocking with the first teaching material selecting means; and a remote control device for transmitting control voltage signals to a plurality of contacts of the second teaching material selecting means. A control number setting means, a remote control function setting means for selectively setting a remote control function such as recording and playback, and a signal selected by the second educational material selection means and a signal selected by the remote control function setting means are compared. It comprises a gate means, a control function storage means built into the magnetic recording and reproducing means, and a switch means for activating the control function storage means, and the remote control is performed by a difference in the voltage signal selected by the second teaching material selection means. 1. A remote control device for a magnetic recording and reproducing machine, characterized in that control can be performed by switching between control by a switch means at hand and control by a switch means at hand of the magnetic recording and reproducing machine.