JPH0240685A - Group learning device - Google Patents

Abstract

PURPOSE:To improve the operability of the group learning device by recording pieces of information which are generated at the same time by time-division multiplexing in a teacher-side memory by students through a common bus line and outputting them as sequential pieces of information by the students through the area operation of the memory. CONSTITUTION:A teacher terminal 3 and a student terminal 4 are connected to the system bus 1 of the group learning device and pieces of information which are voiced at the same time by students are multiplexed by the students on a time-division basis and sent digitally from the terminal 4 to the bus 1. Further, the system controller 2 which has a semiconductor memory 9 and a control circuit 5 is connected to the bus 1 and the voice signal from a regenerating device 30 such as a tape recorder and the voice signal from the terminal 4 are stored. Then the voice signals from the regenerating device 30 and terminal 4 are outputted to a common sound reinforcement system through the bus 1 by the CPU 8 the control circuit 5 and read write clock generating devices 40 and 41 of the controller 2.

Description

[Detailed Description of the Invention] [Industrial Field of Application] [Summary of the Invention] Simultaneously occurring information such as simultaneous pronunciation of students is recorded in the memory of the parent device via a time-division multiplexed common bus line, and is then transferred from the memory. This is a group learning device that allows the teacher to individually grasp the content of students' simultaneous practice with simple operations by transferring and recording it to a recording medium.

[Conventional technology]

A group learning method called a so-called LL-system (Language Laboratory System) uses a learning device consisting of one master device and a plurality of slave devices. The teacher on the parent device side and one selected student on the child device side can have a conversation using a microphone and headphones. In learning called drills, students use tape recorders installed in each child device to record the teacher's voice or teaching materials, and repeatedly practice while playing the recordings.

In order to check the students' progress, the teacher has the students record their own recordings during drill practice, collects each student's cassette tape, and plays it back individually for later listening.

[Problem to be solved by the invention]

In this type of drill study where students practice individually, the students all speak at the same time, so it is difficult for the teacher to keep track of each student unless they record on their own tape recorders. - It was an extremely inefficient learning method for both teachers and students because they had to replay and check the material.

In view of this, it is an object of the present invention to eliminate the trouble of operating equipment for students and teachers, and to enable efficient learning.

[Means to solve the problem]

The group learning device of the present invention uses the master device 3 on the teacher's side and a large number of child devices 4 on the student side to time-division multiplex simultaneous occurrence information such as students' simultaneous utterances for each student and digitally transmits it to the teacher side. A common bus line 1 is provided between the child device 4 and the parent device 3, and a common bus line 1 is provided to the parent device 3 in order to allocate and write the information transmitted on the common bus line 1 to a storage area for each student. It is equipped with a memory 9 and a recording device 45 for recording the occurrence information for each student sequentially read from the memory 9 onto a recording medium such as a tape or a disk.

[Effect]

Simultaneously occurring information from a large number of students is recorded in the teacher's memory via a common hash line by time division multiplexing. Therefore, students do not have to operate their own tape recorders. The memory may be randomly accessible, and input time-sharing information can be decomposed and output as information for each student.

By recording the memory output on a recording medium, the teacher can sequentially check the simultaneous occurrence information for each student.

〔Example〕

FIG. 1 is a professional diagram of a learning device to which the present invention is applied. In FIG. 1, ■ is a system bus to which a system control device 2, a teacher's terminal 3, a student's terminal 4, and a common loudspeaker 33 are connected.

First, the system control device 2 will be explained.

The system control device 2 includes a semiconductor memory 9 and a control circuit 5, in which audio signals for teaching materials played back by a playback device 30 such as a tape recorder and audio signals sent from the student terminal 4 are stored. Ru.

The control 111 circuit 5 includes a central processing unit (CPU) 8 and a ROM.
6, RAM 7, etc., and controls the semiconductor memory 9, the recorder 45, the playback device 30, and the entire learning device. In the embodiment, two clock generators are provided. That is, a write clock generator 40 and a read clock generator 41 are provided. Then, the write clock signal P1 generated by the write clock generator 4o is applied to the write address counter 42 to control the four write addresses of the semiconductor memory 9.

Further, the read clock signal P2 generated by the read clock generator 41 is applied to the read address counter 43 to control successive read addresses of the semiconductor memory 9.

The audio signal P3 for teaching materials played by the playback device 30 is sent to the amplifier 3.
1 and converted into a digital signal by the A/D converter 32, and then supplied to the semiconductor memory 9 and stored therein. A/
The write clock signal P generated by the write clock generator 4o is used as the sampling clock of the D converter 32.
, is given.

Note that only the sound signal is written in the semiconductor memory 9, and the sentence number 9'r of each sentence block of the audio signal group written in the semiconductor memory 9, its start address and end address, and the pause time in between are as follows. It is written into the RAM 7 of the control device 5.

Next, the teacher terminal 3 will be explained. 11 is a controller connected to the system bus 1; A human power device (keyboard) 13 and a display 12 are connected to this controller 11 . 18 is a Herad set, which is equipped with a microphone 18M and headphones 18H. Microphone 18M is connected to system bus 1 through amplifier 14 and A/D converter 15. Further, a system bus 1 is connected to headphones 18H through a D/A converter 16 and an amplifier 17.

Next, the student terminal 4 will be explained. 21 is a controller connected to the system bus 1; An input device (keyboard) 23 and a display 22 are connected to this controller 21 . A headset 28 includes a microphone 28M and headphones 28H. Microphone 28M is connected to system bus l through amplifier 24 and A/D converter 25. Further, the system bus 1 is connected to headphones 28H through a D/A converter 26 and an amplifier 27.

As shown in the figure, a plurality of student terminals 4 having the same configuration are connected to the system bus 1.

In this case, the teacher's voice can also be superimposed on the sentence group reproduced from the reproduction device 30 and written into the RAM 9.

Next, the common public address system 33 will be explained. This is composed of a D/A converter 3-4 connected to the system bus 1, an amplifier 35 whose output is amplified, and a speaker 36 to which the amplified output is supplied.
6 is installed in the room where the students are so that all the students can hear the sound before it is emitted.

In this learning device, by operating the input device 13 of the teacher's terminal 3, a group of sentences from the player 30 can be written to the semiconductor memory 9, and the group of sentences stored in the semiconductor memory 9 can be written to the teacher's terminal 3. By operating the input device 13 of the student terminal 4 or the input device 23 of the student terminal 4, the teacher or student can reproduce and listen to the music using the headset 18 or 28 of the teacher or student. Also, teacher terminal 3
By operating the human input device 13 or the input device 23 of the student terminal 4, the semiconductor memory 9 can be accessed (by sentence number or minutes and seconds), such as fast forwarding or rewinding a tape.

Using the headset 18 of the teacher's terminal 3 and the headset 28 of the student's terminal 4, it is possible to talk and practice between the teacher and the students as well as between the students.

In this case, the teacher's or student's voice can be transmitted to all students by the common public address system 33.

Next, the operation of loading the students' practice contents into the semiconductor memory 9 and the operation of recording the loaded practice contents of each student onto one analog tape will be explained.

First, the input device 13 of the teacher's terminal 3 is operated to change the operation mode of the device to a recording mode for practice content.

When the operation is started in this mode, as shown in the flowchart of FIG. 4, it is detected in step SI whether or not the drill record key is pressed.

The drill record key stores the student's practice content in semiconductor memory 9.
This is a function key for writing on the front panel 48 of the teacher terminal 3, as shown in the panel front view of FIG.
This is a push button switch provided with a DRILL REC display.

In addition to this, the front panel 48 has a save key 5 for outputting the signal imported from the teacher's terminal 3 to the semiconductor memory 9.
AVE and the STENIPUNTO save key 5TUDENT 5AVE for reading and outputting the practice content imported from the student terminal 4 into the semiconductor memory 9 and the load key LO for writing audio signals for teaching materials into the semiconductor memo I79.
Function keys such as AD are provided. These function keys are provided in two systems each, with P l for the first system of keys and P l for the second system of keys.
2 displays are made respectively.

In addition to these function keys, the teacher's front panel 48 also includes a copy key C0PYI-2 for transferring and storing data stored in the first system memory to the second system memory, and a copy key C0PYI-2, which will be described later. Skip monitor key 5K
An IP MONITER etc. is provided.

If the drill record key DRILL REC is not pressed, the process advances to step S2, and it is determined whether the save key 5TUDENT 5AVE on the student side is on.

If it is on, the process advances to step S3, and if it is off, the process waits in step S2 until the student's save key 5TUDENT 5AVE is pressed.

In step S3, the practice contents of each student stored in the semiconductor memory 9 are read out and given to the recorder 45.
Record at double speed.

For 4x speed recording, the read clock P2 is applied to the read address counter from the read clock generation value 2241.
frequency to four times the standard frequency. For example, the standard is 64KHz
In this case, set it to 256Ktlz. This quadruples the signal reading speed and quadruples the amount of data read per unit time.

The signal read from the semiconductor memory 9 is sent to the D/A converter 4.
6 and an amplifier 47 to the recorder 45. The recorder 45 is an analog tape recorder, and the control circuit 5
controls the recording speed by 4 times. Further, the same clock signal P2 as that given to the read address counter 43 is sent from the read clock generator 41 to the D/A converter 46.
is given.

Since recording is performed at four times the speed in this manner, an analog tape (not shown) without data loss or deterioration can be obtained, just as if it were recorded at the standard speed.

If the drill record key DRILL REC is turned on, the process advances from step S to step S4. In step S4, the trill record key DRIL on the front panel 49 of the student terminal 4 shown in the panel front view of FIG.
L REC lights up and microphone 28M is forcibly turned on. Therefore, in the next step S5, when each student responds to the teacher's question, the answer, that is, the practice content of each student is written into the semiconductor memory 9.

The semiconductor memory 9 of the embodiment is provided with recording areas for the number of students, as shown in the diagram for explaining the recording areas in FIG. That is, the addresses AO to A of the semiconductor memory 9,
The area up to address An-Affi is the recording area for student B, and the area up to address A is student C.
The recording area is allocated as follows. Each recording area has a memory capacity to store, for example, eight seconds worth of audio signals. Therefore, in step S5, each student's practice content is written in a separate recording area for 8 seconds.

In order to allow a plurality of student terminals 4 to access one semiconductor memory 9, time slots are set within the audio sampling period, and the semiconductor memory 9 is accessed individually in each time slot. .

In this embodiment, as shown in the time slot explanatory diagram of FIG. 6, one time slot is defined as a sampling period (125 μs), that is, a time obtained by dividing one frame into 256.

Therefore, one time slot is 488 ns.

As shown in the explanatory diagram of FIG. 7, the access time allocation is as follows: For example, the student terminal 4 numbered 13 allocates the time slot number 2 as the time for reading the memory contents, and the student terminal number 54 allocates the time slot number 2 as the time when the student terminal 4 reads out the memory contents. A time slot numbered 81 is assigned as the time to write the contents into the semiconductor memory 9. That is, from the perspective of each student terminal, the time slot is assigned as a time at which the semiconductor memory 9 can be accessed continuously in a frame period.

When the 8 seconds of writing in step Ss is completed, proceed to step S, and press the student side save key 5TUDENT.
5AVE is automatically turned on. As a result, the reading operation of the semiconductor memory 9 is started, and the practice contents stored in the student's recording area are read out at 4x speed, and the recorder 45 is started to record at 4x speed in step S7.
. Record at 4x speed.

Each terminal accesses its individually assigned recording area in the order of addresses using time slots, and writes each exercise content frame by frame in the order of the addresses.

Therefore, even if information to be written into the memory 9 occurs simultaneously by each student making sounds at the same time on each of the student terminals 4, the sequentiality of the information is maintained for each student.

Therefore, by sequentially recording the addresses in the order of addresses on the recorder 45 in step S8, the simultaneous occurrence information can be recorded on one tape as sequential information for each student.

After reading and recording the recording areas for the number of students in step SIl, the recorder 45 is stopped to end the tape recording operation.

Since the group learning device of the embodiment records the practice contents for the number of students on one tape in this way, the recording operation is simple. In addition, since the drill key on the student side can be turned on by operating the teacher's terminal 3, it is possible to force each student to practice all at once, and to record the practice content on a recording medium such as a single tape. can.

Therefore, it is possible to listen to the practice content of all students by simply playing back one tape, which greatly improves the task of checking the progress of each student.

In the embodiment, recording to the recorder 45 is performed at quadruple speed, but recording may be performed at other speeds such as normal speed. Further, a disk or the like may be used as the recording medium.

〔Effect of the invention〕

As described above, the present invention uses time-division multiplexing to record simultaneous occurrence information of students into the teacher's memory via a common bus line, outputs the information sequentially for each student by manipulating the memory area, and stores it on a recording medium. This eliminates the need for troublesome equipment operations, where students had to operate their own tape recorders to record, and the teacher had to collect as many tapes as the number of students and play them one by one. This eliminates the need for more efficient teaching and learning.

[Brief explanation of the drawing]

Figure 1 is a block diagram of a group learning device showing an embodiment of the present invention, Figure 2 is a front view of a teacher's terminal, Figure 3 is a front view of a student's terminal, and Figure 4 is a recording medium for recording practice contents. Figure 5 is a diagram explaining the recording area for each student provided in memory, Figure 6 is a diagram explaining the time slots for accessing the memory, and Figure 7 is a diagram explaining each student's recording area. FIG. 3 is a diagram for explaining an example of a time when a terminal accesses a semiconductor memory. In addition, in the symbols used in the drawings, t −−−−−−−−−−−−−−System bus 2・−
・-----1-----System control device 3-
−−−−1・−−−−−−−1−−−−Teacher terminal 4−
−−−−−−−−−−−−−−−One student terminal 5'−
−−−−−−−−−−−−−−−1 control circuit 9−−−−
−1～−−−−−−−−−−−Semiconductor memory 45・−
・----1・---m--・--・-Recorder p, ---
−−−−−−−−−−−−−−1 write clock signal p
, --...--111--read clock signal.

Claims (1)

[Scope of Claims] A master device on the teacher's side and a large number of slave devices on the student side, and the slave device and the above-mentioned device for time-division multiplexing and digitally transmitting simultaneously occurring information such as students' simultaneous utterances to the teacher side for each student. a common bus line provided between the parent device; a memory provided in the parent device for allocating and writing the information transmitted on the common bus line to a storage area for each student; A group learning device comprising a recording device for recording generation information for each student that is sequentially read out on a recording medium such as a tape or a disk.