JPH0625899B2 - Group education equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a group education device suitable for use in group education such as language learning.

Background Art and Its Problems Traditionally, Language Laboratories (Language Laborato
ry) language group education system (hereinafter abbreviated as LL)
It has been known.

First, a conventional LL system will be generally described with reference to FIG. In FIG. 1, reference numeral (10) indicates a teaching material production and reproduction tape recorder (hereinafter referred to as a master TC), and this master TC (10) is connected to an adjusting table (20) and its operation is controlled. Reference numeral (30) denotes an external device, and the external device (30) is, for example, a tape recorder, a video tape recorder, a receiver, etc., all of which are connected to the adjusting console (20) and their operations are controlled. Signals from these external devices (30) and master TC (10) are sent from the adjustment console (20) to each booth (4
1), (42) ... (4n) are transmitted to all or part of them and used for learning by students.

By the way, the master TC (10) or external device (3
When using the tape recorder in (0), it is necessary to quickly search for the desired teaching material on the magnetic tape and control other external devices in relation to the teaching material contents.
Conventionally, a signal for searching and controlling (hereinafter referred to as a queuing signal) is recorded on another track of the same tape on which teaching materials are recorded, and the queuing signal is reproduced to perform searching or control of an external device. Was there.

An example of such a conventional queue signal recording / reproducing apparatus will be described with reference to FIG. In FIG. 2, (2
1a), (21b), ... (21n) denote oscillators, and these oscillators (21a), (21b), ... (21n) oscillate signals of different frequencies a, b, ... Signals are supplied in parallel to the recording amplifier (11) via the corresponding switches (22a), (22b), ... (22n). Reference numeral (12) indicates a recording head, and the recording head (12) is supplied with an output of a recording amplifier (11) of a predetermined level, and a multi-frequency queuing signal is recorded on a magnetic tape (not shown).

(13) indicates a reproduction head, and the above-mentioned multi-frequency queuing signal reproduced by the reproduction head (13) is a reproduction amplifier (1
It is amplified to a predetermined level in 4). (23a), (23b), ... (23n)
Indicate band filters, and these band filters
The center frequencies of (23a), (23b), ... (23n) are the oscillation frequencies a, b, ... of the corresponding oscillators (21a), (21b), ... (21n).
It is set to n, and the multi-frequency queuing signals supplied from the regenerative amplifier (14) are separated by these band filters. The output of each band filter is supplied to the corresponding control circuits (24a), (24b), ... (24n), and is used to search the master TC, control the operation of an external tape recorder and video tape recorder, etc., respectively. To be

The filter, the control circuit, the oscillator, and the switch described above are arranged as a program control unit on the adjusting table.

In the above-mentioned conventional device, one frequency is assigned to control the operation of one device, so that the number of queuing signals cannot be increased too much due to the restriction of the cutoff characteristics of the filter. It was only used.
Further, there is also a drawback that the configuration of the oscillator, the filter, etc. becomes complicated as the frequency increases, leading to an increase in price.

SUMMARY OF THE INVENTION In view of these points, the present invention has a simple structure and can quickly retrieve desired teaching material data that a user wants to retrieve from a magnetic tape, and a group that can use various types of queuing signals. The purpose is to provide an educational device.

SUMMARY OF THE INVENTION The present invention provides information related to teaching material data recorded on a magnetic tape to include n-bit cue code data and (N-
data recording means for recording N-bit digital data consisting of n) bit identification data on the magnetic tape by tone burst, tape running means for running the magnetic tape, and N-bit digital data recorded on the magnetic tape. By comparing the reproduced digital data reproduced by the reproducing means with the input digital data inputted by the input means. And a control means for controlling the tape running means so that the tape running means stops the running of the magnetic tape when the data distinguishing means determines the match between the reproduced digital data and the input digital data. And the desired teaching material data that the user wants to search Can be quickly searched from the magnetic field tape, and various types of queue signals can be obtained with a simple configuration, and various LL equipment can be controlled in various ways, and the queue signals can be used as digital data. Therefore, it is possible to easily exchange data.

Embodiment An embodiment of the group education device according to the present invention will be described below with reference to FIG. In FIG. 3, parts corresponding to those in FIG. 2 are designated by the same reference numerals, and duplicate description will be omitted.

In FIG. 3, (21) indicates an oscillator, and this oscillator (21)
The sine wave output of, for example, 500 Hz is supplied to the recording amplifier (11) via the electronic switch (22). A square wave generator and a bandpass filter may be used instead of the oscillator (21), and the oscillator (21) may be directly keyed without using the electronic switch (22). (15) shows a waveform shaping circuit, and this waveform shaping circuit (1
The output of the regenerative amplifier (14) is supplied to the input port (1) via (5). (2) indicates a central processing unit (hereinafter referred to as CPU),
The CPU (2) receives a data signal from the regenerative amplifier (14) through the input port (1) and supplies a signal for controlling its opening and closing to the electronic switch (22) through the output port (3). . (4) indicates an output port, and the tape running control data of the CPU (2) is sent to the tape running control device via the output port (4).
Supply to (16). (17) and (18) show a supply reel drive motor and a take-up reel drive motor, respectively, and (19) is an operation switching mechanism for displacing a mechanism such as a magnetic head mounting plate and a pinch roller according to the tape running mode. A drive motor is shown, and each of these motors (17), (18) and (19) has a control circuit (16) corresponding to the tape running control device (16).
The power supply (6) is connected via a), (16t) and (16m), and each motor is operated according to the traveling control signal supplied from the output port (4) to each control circuit. . (5) is I / O
Show interface, this I / O interface (5)
Is for exchanging data between the CPU (2) and an adjusting console (not shown) by, for example, an RS232C system.

The operation of the device of this example is as follows. An 8-bit digital data signal, for example, as shown in FIG. 4A, is supplied from the CPU (2) to the electronic switch (22) as a switching control signal as shown in FIG.
As is apparent from FIG. 4A, this digital data signal is a self-clock type signal including a clock pulse of a predetermined frequency and having "1" and "0" data portions in the subsequent portion of the clock pulse. Data part is data “0”
Is composed of "Hi" 1 unit length and "Lo" 2 unit length, and for data "1" is composed of "Hi" 2 unit length and "Lo" 1 unit length. This one unit length is set to 8 mS, for example. Furthermore, since this data signal is a self-clock type, it is not affected by fluctuations in the running speed of the magnetic tape. Oscillator
The continuous sine wave output of 500 Hz from (21) is controlled by such a digital data signal, and the output of the electronic switch (22) is an intermittent sine wave () suitable for magnetic recording as shown in FIG. 4B. (Hereinafter referred to as tone burst) data signal. This tone burst is recorded on the tape as a queue signal through the recording amplifier (11) and the recording head (12). Since there are 256 kinds of 8-bit digital data, it is possible to use the conventional structure with the simple structure of this example. It is possible to use 256 types of queuing signals, which are one digit more than 20 types of queuing signals. Moreover, when 16 bits are used, 65536 kinds of queue signals can be obtained.

As described above, if the digital data signal is used as it is, it is possible to use various queuing signals as described above, but here, for example, as in the format shown in FIG. 5, a 16-bit signal is used. Queue signal to a, b, c
It is divided into 4 and 4 bits each, and the first division a represents the seed signal of the queue signal (16 kinds are possible), and the divisions b, c and d are used to indicate the decimal digits of 100, 10, and 1 respectively. Each of 0 to 9 can be represented to represent a series of numbers from 0 to 999. Types of queue signals include manual data input for controlling an external device, a count value of a tape counter, and a student number.

When the tape on which the queuing signal as described above is recorded is reproduced, the output of the reproduction amplifier (14) is as shown in FIG. 4B.
It becomes a tone burst data signal. This tone burst is shaped by the waveform shaping circuit (15) into a digital data signal as shown in FIG. 4A by using, for example, both-wave rectification and envelope detection, and is input through the input port (1). And supplies it as CPU signal information to the CPU (2). If this digital queue signal information is for the manual data input, the CPU (2) can easily transfer it to the adjustment console via the I / O interface (5) to operate the external device. Control a wide variety. Further, in the case of the queue counter or the student signal of the student number, when the counter value or the student number matches the desired counter value or the student number, the tape running is stopped and the tape position for the desired teaching material is quickly changed. You can search.

In the case of student number (student identification number),
Description will be made with reference to the flow chart of FIG. It is assumed that the tape was initially stopped at a position past any student number S ₀ . Although illustration is omitted, when the desired student number S _n is input to the CPU (2) by operating the ten keys provided on the adjusting table, the CPU first outputs the control signal FF for running faster than constant speed reproduction. The tape is fed to the running control device (16) and fast-forwards. In this case, the reproducing head (13) comes into contact with the tape, and the running speed is suppressed to a speed at which the queue signal can be stably reproduced. Play the first queuing signal and read student number S ₁ . Here, the CPU (2) compares the size relationship between the first student number S ₁ and the desired student number S _n, and ends the tape position detection if S _n = S ₁ . When S _n > S ₁ , the control signal FF is
If S _n <S _1, the CPU (2) supplies the control signal RW for running in the reverse direction faster than constant speed playback to the running control device (16), and the tape moves forward or backward at high speed. Is played. Then, the second queuing signal is reproduced to read the student number S ₂ , and thereafter, the number comparison is repeated, the desired student number S _n is detected, and the tape position detection is completed.

Although the present invention has been described with reference to one embodiment thereof, the present invention is not limited to this. For example, instead of the single frequency tone burst of this example, a multi-frequency tone burst data signal such as a so-called Kansasity standard is used. Using
It will be readily apparent to those skilled in the art that many variations are possible.

EFFECTS OF THE INVENTION As described above in detail, according to the present invention, the user can quickly search for a desired portion of the teaching material data to be searched from the magnetic tape, and since a sinusoidal intermittent signal is used, many types can be obtained with a simple structure. It is possible to obtain the queuing signal of and to control various devices of the LL in various ways.

Further, since the queue signal is digital data, data can be easily exchanged.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a conventional LL, FIG. 2 is a block diagram showing an example of a conventional recording / reproducing device, and FIG. 3 is a block diagram showing an embodiment of a group education device of the present invention. FIG. 5 is a waveform diagram for explaining the present invention, FIG. 5 is a diagram showing a format of a queue signal of the present invention, and FIG. 6 is a flow chart showing a tape running control program according to the present invention. (1) is an input port, (2) is a CPU, (3) and (4) are output ports, (5) is an I / O interface, (10) is a master TC, (1
2) is a recording head, (13) is a reproducing head, (15) is a waveform shaping circuit, (16) is a traveling control device, (17) and (18) are supply reel and take-up reel drive motors, respectively (20). Is the adjusting table, (21)
Is an oscillator, and (22) is a switching circuit.

Claims (1)

[Claims] 1. Information related to teaching material data recorded on a magnetic tape is recorded as n-bit cue code data and (N
-N) data recording means for recording N-bit digital data consisting of bit identification data on the magnetic tape by tone burst, tape running means for running the magnetic tape, and the above-mentioned data recorded on the magnetic tape. Data reproducing means for reproducing N-bit digital data, data input means for inputting desired digital data, reproduced digital data reproduced by the reproducing means and input digital data inputted by the input means are compared. Data discriminating means for discriminating whether or not they coincide with each other, and when the data discriminating means discriminates between the reproduced digital data and the input digital data, the tape traveling means stops the traveling of the magnetic tape. A control means for controlling the tape running means, Population education system which is characterized in that.