JPS5831659B2 - Jiyouhoushingousaiseisouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information signal reproducing device such as a tape recorder suitable for application to, for example, an educational system.

In educational systems that use traditional tape recorders,
As shown in Figure 1, questions and their explanations are recorded alternately on the same track t on a tape T, and during playback, the question part is played back first, and if the student's answer to the question is incorrect, the explanation part is played back. When the student's answer is correct, the explanation part is skipped by fast-forwarding and the student moves on to the next question part.

By the way, in the educational system, students who give a correct answer immediately proceed to the next question without any time interval, while students who give an incorrect answer are given a pause before moving on to the next step (answer, etc.). Learning will be more effective if there is some time interval for thinking, and it will be easier for learners to learn.

However, in the educational system explained in Figure 1,
When a wrong answer is given, the explanation part is immediately played back, and when a correct answer is given, there is a time interval during which fast forwarding is performed, which is undesirable.

Furthermore, it is necessary to detect a cue signal or the like indicating the end of the explanation section when the tape is transferred at high speed, such as during fast forwarding, and a special configuration is required for this purpose.

Furthermore, if the user wants to listen to the previous question again after listening to the explanation, it is necessary to rewind and play back the explanation part and the question part, which is also undesirable since it takes a long time to listen to the question.

In view of this, the present invention, when applied to an educational system using a tape recorder, eliminates the above-mentioned conventional drawbacks, and when a correct answer is given to a certain question, it immediately advances to the next question, and if the user gives a correct answer to a question, the present invention is applied to an educational system using a tape recorder. If an answer is given, the question can be explained, and if necessary, the question can be asked again after the explanation has been completed, i.e. the main information signal and the side information signal related to any part thereof. mainly reproduces the main information signal from the recording tape on which the main information signal is recorded, and when necessary, can quickly search and reproduce the part of the sub information signal related to any part of the main information signal, and further as necessary. The purpose of the present invention is to propose an information signal reproducing apparatus in which reproduction of the main information signal is immediately resumed after reproduction of the sub information signal portion is completed.

That is, the present invention provides a recording track in which a series of main information signals are recorded, and a sub information signal related to any part of the main information signal is recorded at the same recording start position as any part of the main information signal. A means for detecting the end of reproduction of an arbitrary portion of a main information signal and transporting the recording tape in the opposite direction by an external control signal, using a recording tape having another recording track, and a recording start position. The apparatus is provided with means for detecting the recording tape, transporting the recording tape in the forward direction, and reproducing the sub information signal.

An embodiment of the present invention will be described below with reference to the drawings. In the following explanation, a case where the present invention is applied to a tape recorder for asking questions in an educational system will be described.

FIG. 2 shows an example of a control system for a tape recorder.

In the figure, reference numeral 1 denotes a magnet ring that rotates in relation to a reel stand of a supply reel of a tape recorder, and is magnetized at predetermined equal intervals along the circumference.

A reed relay 2 is disposed close to this magnet ring 1.

One end of this reed relay 2 is grounded, and the other end is connected through a resistor 3 to a power supply terminal 4 having a voltage of +VCC, and through a resistor 5 to the base of a transistor 6.

Further, the connection point between the resistor 5 and the transistor 6 is grounded through a parallel circuit of capacitors 7 and 8.

Further, the emitter of the transistor 6 is grounded, and the collector is connected to the power supply terminal 4 through a resistor 9, and a resistor 10.
It is connected to the Schmitt circuit 11 through.

The output terminal of this Schmitt circuit 11 is connected to NAND circuits 12 and 13.

Reference numeral 14 is an input terminal to which signals related to forward and reverse transport of the tape are supplied; in this case, when the tape is being transported in the forward direction, it is 1", and when it is being transported in the reverse direction, it is 1". At this time, a signal of °O'' is supplied.

This input terminal 14 is directly connected to the NAND circuit 12 and also connected to the NAND circuit 13 through the impark 15.

The output terminal of this NAND circuit 12 is connected to three reversible counters 1.
Counter 16 in which 6a, 16b and 16c are connected in series
The output terminal of the NAND circuit 13 is connected to the input terminal of the counter 16 on the subtraction side.

Furthermore, 17 is a cue signal related to the recording start position (described later)
is an input terminal to which is supplied, and this input terminal 17 is connected to each reversible counter 16a, 16 constituting the counter 16.
Connect to the reset terminals of b and 16C.

Each counter 16a that constitutes this counter 16.

161J! The output terminals of the counting signals of the NOR circuits 18a, 18b and 18C are connected to the NOR circuits 18a, 18b and 18C, respectively, and the output terminals of the NOR circuits 18a, 18b and 18c are connected to the NAND circuit 19.

The output terminal of this NAND circuit 19 is connected to a monostable multi-by-break 20 (hereinafter abbreviated as mono-multi), and an output terminal 21 is connected to a system control circuit (not shown) at a stage subsequent to this mono-multi 20. Derive.

Further, FIG. 3 is a schematic plan view showing the recording mode of the recording tape T used in the present invention.

In the present invention, as shown in this FIG. It has another recording track t2 in which sub information signals such as ``QUESTION 32'' and ``COMMENTARY 33'' are recorded at the same recording start position as the recording start position of the question 32, and the recording start position and end position of the question 32 and the explanation 33 are recorded in each recording track t1 and t2. For example, a recording tape T is used on which a cue signal 34 and an end signal 35, each composed of a predetermined single frequency signal, are recorded.

In this way, when the recording tape T shown in FIG. 3 is played back using the circuit shown in FIG. At this time, the magnet ring 1 rotates in conjunction with the transfer of the tape T.

By rotating this magnet ring 1, reed relay 2 performs on/off operation, and this reed relay 2
The on-period transistor 6 of the reed relay 2 becomes non-conductive, the off-period transistor 6 of the reed relay 2 becomes conductive, and a pulse signal related to the amount of tape T transferred is obtained at the output terminal of the Schmitt circuit 11.

This pulse signal is supplied to NAND circuits 12 and 13.

Further, since the table T is being moved in the forward direction, the input terminal 14 is supplied with a signal of "1", and the input terminal of the NAND circuit 12 is supplied with a signal of "I n".

Therefore, a pulse signal from the Schmitt circuit 11 can be obtained at the output terminal of the NAND circuit 12, and the counter 16 is driven to add in accordance with this pulse signal.

Next, when the cue signal 34 is reproduced, a signal is supplied to the reset terminal of the counter 16 through the input terminal 17, and each reversible counter 16a, 16b, and 16c forming the counter 16 is reset to zero.

Further, at the time when the question 32 is being reproduced, the counter 16 is driven to add in the same manner as described above.

When the reproduction of this question 32 is completed and the end signal 35 is reproduced, the transport of the tape T is temporarily stopped and an answer from the student is awaited.

If the answer from the student is correct, the tape T is transported in the forward direction and the next question is played back in the same manner as described above.

On the other hand, if the answer given by the student is incorrect, the answer judgment circuit (not shown) detects the incorrect answer, and a control signal is supplied to the system control circuit, causing the tape recorder to rewind. Become.

That is, the tape T is transported in the opposite direction.

Therefore, a signal of O'' is supplied to the input terminal 14, a signal of "1" is obtained at the output terminal of the inverter 15, and a signal of "1'" is supplied to the input terminal of the NAND circuit 13.

On the other hand, from the Schmitt circuit 11, a pulse signal related to the amount of transport of the tape T is obtained, as in the case when the tape T is being transported in the forward direction.

Therefore, a pulse signal from the Schmitt circuit 11 is obtained at the output terminal of the NAND circuit 13, and the counter 16 is driven to subtract according to this pulse signal.

By performing this subtraction drive, when the counter 16 is reset to zero by the cue signal 34, an amount of tape T equal to the amount of tape T transferred in the forward direction is transferred in the reverse direction. , the count content of the counter 16 becomes zero.

That is, when the tape T is rewound to the position of the cue signal 34, each reversible counter 16a forming the counter 16,
A signal of 0 is obtained at all output terminals of 16b and 16c.

Therefore, the output signals of the NOR circuits 18a, 18b and 18c become "1", and the output signal of the NAND circuit 19 becomes "0".
", and the output terminal 21 derived from the monomulti 20
A pulse signal with a predetermined time width is obtained.

This pulse signal is supplied to the system control circuit, and the tape T
At the same time, the recording track to be reproduced is switched from tl to t2, and explanation 33 is reproduced.

When the reproduction of the explanation 33 is completed and the end signal 35 is reproduced, the transport of the tape T is temporarily stopped.

Then, the system control circuit switches the recording track to be reproduced again to the recording track t1 of the main information signal while keeping the tape T moving in the forward direction, and reproduces the next question 32 or explanation 31.

According to the above-mentioned information signal reproducing apparatus of the present invention, the main information signal is mainly reproduced from the recording tape on which the main information signal and the sub information signal related to any part thereof are recorded, and when necessary, the main information signal is reproduced. A portion of the sub information signal related to any portion of the sub information signal is quickly retrieved and reproduced, and the reproduction of the main information signal is immediately resumed once the reproducing power of the portion of the sub information signal has been considered.

Furthermore, according to the tape recorder of the above-mentioned educational system, when the answer to a question is correct, it immediately moves on to the next question;
If the question is incorrect, the explanation for the question can be immediately played back.

Furthermore, since the recording start position is detected by counting with a reversible counter, there is no need for a special configuration for detecting a cue signal during high-speed tape transport.

In the present invention, since the detection of the cue signal and the end signal is performed when the tape is being transferred at low speed, it can be carried out with a simple configuration such as providing an F-wave device in the reproduction signal system.

Furthermore, if you want to ask the question again after playing the explanation,
The end of the explanation 33 is detected by the end signal 35, the tape is rewound, and the question can be reproduced from the position of the cue signal as described above.

In the above-mentioned embodiment, the case where there is a single sub information signal such as commentary is described, but multiple sub information signals are recorded in parallel on a plurality of other recording tracks with the same recording start position, and answers from students are recorded in parallel. The recording track to be reproduced after rewinding may be selected depending on the degree of rewinding.

Furthermore, the present invention is applicable not only to the case of generating audio signals as described above, but also to a reproducing apparatus for a recording tape on which information signals such as video signals and digitally coded data signals are recorded.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing a recording mode of a recording tape used in a conventional information signal reproducing device, FIG. 2 is a system diagram of an embodiment of an information signal reproducing device according to the present invention, and FIG. FIG. 2 is a schematic plan view showing a recording mode of a recording tape used in the invention. 1 is a magnet ring, 2 is a reed relay, 11 is a Schmitt circuit, 14 is an input terminal to which a signal related to the running direction of the tape is supplied, 16 is a counter, and 17 is an input terminal to which a signal related to the cue signal is supplied. , 20 is a monostable multi-by-break, 21 is an output terminal, 31 and 32 are explanations and questions forming a series of main information signals, 33 is an explanation forming a sub information signal, 34 is a cue signal indicating the recording start position, 35 is the end signal.

Claims (1)

[Claims] 1 a recording track on which a series of main information signals are recorded;
A sub information signal related to an arbitrary part of the main information signal is recorded on another recording track having the same recording start position as the arbitrary part of the main information signal. means for detecting the end of reproduction of any part of the recording tape and transporting the recording tape in the reverse direction based on an external control signal; An information signal reproducing device comprising means for reproducing a sub information signal.