JPS6113590B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an educational device used, for example, in language education.

The basic functions of language teaching devices are calls from teachers to students and training, but in recent years, in addition to this function,
Group conferences with multiple students are becoming more important, and if there is a function that allows students to freely talk and discuss, it will be possible to change the class from a teacher-student class to a peer-to-student class. Group activities can proceed smoothly, and the effectiveness of practice can be further improved by allowing conversation and discussion not only between students within the group, but also among students designated by the teacher.

Previously, this type of educational equipment that enabled group discussions among students was simply a matter of connecting the output sides of student booth amplifiers to each other using switches, etc., so as the number of students increased, The problem was that the level was lowered and the volume was lowered, making it impossible to have a conversation or discussion.

Therefore, with this invention, it is possible to arbitrarily select either a discussion among multiple students or a discussion only among students designated by the teacher, and in addition, when discussions are held between students, absentee students can To provide an educational device configured so that there is no drop in level even when there are students.

An embodiment of the educational device according to the present invention will be described below with reference to the drawings.

In the figure, 1 ₁ to 1 _N and 2 ₁ ...... are the controlled devices of each student, that is, booth amplifiers, and N students constitute one group, so the booth amplifiers 1 ₁ to 1 _N are The first group, Booth amplifier 2 ₁ . . . belongs to another group. The input sides of the booth amplifiers 1 ₁ to 1 _N and 2 ₁ . . . are connected in parallel to the output terminals 5 and 6 of the common group amplifiers 3 and 4, and the microphones 7 ₁ to 7 _N and 8 ₁ . ... are connected, and headphones 9 ₁ to 9 _N and 10 ₁ ... are connected to the respective output sides.
...is connected. The output sides of the booth amplifiers 1 ₁ to 1 _N and 2 ₁ . . . are respectively connected to conference switching circuits 11 ₁ to 11 _N and 12 ₁ .
Input terminals 13 ₁ to 13 _N and 14 ₁ ......
connected to.

Conference switching circuit 11 ₁ to 11 _N and 1
2 ₁ ...... is the booth amplifier for each student 1 ₁ ~ 1 _N
Attendance terminals 15 ₁ to 15 _N and 16 ₁ connected to the power switches of and 2 ₁ ...... and random conference terminals 17 ₁ connected to the student designation switch provided on the teacher's adjustment desk. ~ _17N
and 18 ₁ ......, and has input terminals 13 ₁ to 13
_N and 14 ₁ . . . are switch circuits 19 ₁ to 19 _N and 20 ₁ . . . which are turned on when the inputs of the attendance terminals 15 ₁ to 15 _N and 16 ₁ .
..., an impedance element such as a resistor 21 ₁ to 2
1 _N and 22 ₁ ...... through, and attendance terminal 1
_AND circuits 23 ₁ to 23 _N and _{24 1} connected to random conference terminals 17 _{1 to} 17 _N and 18 ₁ .
. . . are connected to switch circuits 25 ₁ to 25 _N and 26 ₁ that are turned on when the output becomes “1” through impedance elements such as resistors 27 ₁ to 27 _N and 28 ₁ , respectively.

One switch circuit 19 1 to ₁ of the conference switching circuits 11 ₁ to 11 _N and 12 ₁ .
9 _N and 20 ₁ ...... are common switch circuits 31 and 3 that are turned on when the inputs of group conference terminals 29 and 30 connected to the group switch provided on the teacher's adjustment console become "1".
2. Resistors 33 and 34 and variable resistors 35 and 3
6 and the other switch circuit 25 ₁ to 2
5 _N and 26 ₁ . . . are connected to the group amplifiers 3 and 4 through resistors 37 and 38 and variable resistors 35 and 36, respectively.

In this way, each booth amplifier 1 ₁ to 1 _N and 2
The output side of ₁ ...... is connected to the input side through group amplifiers 3 and 4, and each booth amplifier 1 ₁ to 1 _N
Since the outputs of and 2 ₁ will be fed back to their own input side and cause oscillation, the resistance value of each of the above-mentioned resistors is selected to a value that will not cause oscillation.

In this example device configured as described above, students first sit in their respective booths, and the booth amplifier 1 ₁
When the power switches of ~ _1N and ₂₁ ...... are turned on, the inputs of the attendance terminals ₁₅₁ ~ _15N and ₁₆₁ ...... become "1", and the switch circuits ₁₉₁ ~19
_N and 20 _{1 .} . . are turned on. If a group discussion is to be held between the students, the teacher turns on the group switch, and the inputs of the group conference terminals 29 and 30 become "1", and the switch circuits 31 and 32 are turned _on. Input signals from ~13 _N and 14 ₁ ......, i.e., each booth amplifier 1 ₁ ~ 1 _N and 2 ₁
The signal output from the resistors 21 ₁ to 21
_N and 22 ₁ . . . are supplied to group amplifiers 3 and 4 through resistors 33 and 34 and variable resistors 35 and 36. The output of this group amplifier is commonly supplied to the booth amplifiers 1 ₁ to 1 _N of the first group, and the output of the group amplifier 4 is supplied to the booth amplifiers 2 ₁ . For example, in the first group of Booth amplifiers, the outputs of Booth amplifiers 1 ₁ to 1 _N are supplied to the inputs of all other Booth amplifiers.

Therefore, the audio supplied from each microphone 7 ₁ to 7 _N to each booth amplifier 1 ₁ to 1 _N can be heard on each headphone 9 ₁ to 9 _N , allowing students to freely talk and discuss with each other within the group. be able to.

In this case, if the first student in the group is absent, the switch circuit 19 corresponding to the first student among the switch circuits _{19 1} to 19 _N
1 is turned off, and there is no longer a circuit in which the output signal of the group amplifier 3 is fed back to the group amplifier 3 through the booth amplifier 1 ₁ and the input terminal 13 ₁ , so the overall level, that is, the level of the output terminal 5, decreases. However, by appropriately selecting the resistance value of the resistor ₂₁₁ , the increased level fed back to the group amplifier 3 through the booth amplifier ₁₁ can be reduced by the resistor ₂₁₁ when the switch circuit ₁₉₁ is on. By making it the same as within the level to be
The level does not change regardless of the student's attendance status.

In addition, if you want to designate any student in the group and have discussions only between those students, the teacher should turn on the switch for the student to be designated on the student designation switch, and connect the random conference terminal of the designated student. supply the signal.
For example, if you want to designate the 1st and Nth students in the first group to have a discussion, if the inputs of the random conference terminals ₁₇₁ and _17N are set to "1", both students are already in the attendance state and are not present. Since the inputs to the terminals ₁₅₁ and _15N are "1", the outputs of the AND circuits ₂₃₁ and 23N are "1", and the switch circuits ₂₅₁ and _25N are turned on, and the inputs from the input terminals ₁₃₁ and _13N are turned on _. The input signal is mixed through resistors ₂₇₁ and _27N to resistor 3
7. It is supplied to the group amplifier 3 through the variable resistor 35, and this output is supplied to the booth amplifier 1 ₁ and 1 _N
The outputs of Booth amplifiers 11 and _1N are supplied to the inputs of the booth amplifiers ₁₁ and 1N, allowing discussion between the two students.

In this case, the switch circuit 39 on the group conference terminal 29 side is turned off because the inputs to the random conference terminals ₁₇₁ and _17N are "1", and therefore the output from the switch circuit 39 is "0" and the switch is turned off. Since the circuit 31 is turned off, the outputs of the booth amplifiers of students other than the designated students are not supplied to the group amplifier 3, and the students other than the designated students cannot participate in the discussion.

In this case as well, the resistors ₂₇₁ and _27N are the same as the resistors ₂₁₁ to _{21N mentioned above} . The input terminals (input terminals 13 arranged between input terminals _{13 1 and} 13 _N ) corresponding to _the respective booth amplifiers are
Since there is no circuit to feed back to the group amplifier 3 via ₂ to 13 _N-1 , the resistance value is set to prevent the level of the output terminal 5 from decreasing.

It should be noted that the resistance values of the resistors 33 and 37 are the same, and the resistance values of the resistor placed between the switch circuit 19 ₁ and the ground and the resistance value of the resistor placed between the switch circuit 25 ₁ and the ground are the same. In the case of resistor 21
The resistance values of ₁ and ₂₇₁ are selected to be the same.

The above operation is performed by another group, namely Booth amplifier 2.
The same process is performed in the circuit of ₁ .

Furthermore, the above random conference can also be performed with specified students from other groups. That is, when adding the first student of another group to the first and Nth students of the first group described above, a signal is supplied to the random conference terminal ₁₈₁ of the other group, and the AND circuit Switch circuit 26 ₁ with the output of 24 ₁ set to “1”
When turned on, the input signal from the input terminal 14 ₁ is supplied to the group amplifier 4 through the resistors 28 ₁ , 38 and the variable resistor 36 .
₁ through the input terminals 13 ₁ and 13 _N of the first group and is also supplied to the first group amplifier 3 through the resistor 37 and the variable resistor 35, while the input terminals 13 ₁ and 13 _N
The input signal from the resistor 38 and the variable resistor 36
It is supplied to other group amplifiers 4 through. Therefore, the outputs of booth amplifiers 1 ₁ , 1 _N and 2 ₁ are supplied to their respective inputs, allowing discussion among the students.

As described above, according to the present invention, discussions among students can be freely selected between groups or between two or more selected students, and the output of each student's booth amplifier In addition to simply connecting the side to the input side of the group amplifier with a switch etc., it is also possible to connect the impedance element and the student's attendance.
By sequentially connecting switch circuits that are turned on and off depending on absence, the booth amplifier input of absent students and unselected students is cut off from the group amplifier, so the level will change as the number of students increases or decreases. Students can have comfortable discussions among themselves without any changes, and the students who are not selected can study by themselves using their own booth amplifiers.

[Brief explanation of the drawing]

The figure is a system diagram of an example of the educational device according to the present invention. In the figure, 1 ₁ to 1 _N , 2 ₁ are Booth amplifiers, 3,
4 is a group amplifier, 15 ₁ to 15 _N , 16 ₁ is an attendance terminal, 19 ₁ to 19 _N , 20 ₁ , 25 ₁ to 2
5 _N , 26 ₁ is a switch circuit.

Claims (1)

[Claims] 1. An educational device that enables group conferences between predetermined students, which has a booth amplifier for students and a group amplifier to which the input side of each booth amplifier is connected in common, and the output of each booth amplifier The input side of the group amplifier is connected to the input side of the group amplifier through an impedance element and a switch circuit that is turned on and off depending on the attendance/absence of a student, and when a student is absent, the switch circuit corresponding to the absent student is turned off. In a group conference, the input from the booth amplifier of an absent student to the group amplifier is cut off so that the level on the output side of the group amplifier does not fluctuate even if a student is absent, and the output side of each booth amplifier is is connected to the input side of the group amplifier through an impedance element and other switch circuits that are turned on and off depending on student attendance/absence and random conference input. The above-mentioned group amplifier also operates in a random conference in which the other switch circuits corresponding to students other than the students selected by the conference input are turned off, and input from the booth amplifiers other than the selected students to the above-mentioned group amplifier is cut off. An educational device characterized in that the level on the output side of the device is not fluctuated.