JPS6231404B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder having a multi-channel magnetic head.

As a tape recorder of this kind
The device described in Japanese Patent No. 10520 has a configuration in which both channel outputs of a two-channel magnetic head are selectively supplied to one amplifier, so that recording can be performed on only one track on a magnetic tape. Therefore, there is no need to provide two amplifiers, and there is no risk that the teacher's voice will be erased by erroneous operation of the recorded contents of the comparatively expensive LL method teaching tape. However, on the other hand, as mentioned above, this known tape recorder can only record on one track, so the tape on which any program has been recorded with this tape recorder can be used with other general tape recorders. When playing back, the output level will drop to about 1/3 if unrecorded bands between tracks are taken into account. Therefore, this known tape recorder cannot solve the problem of compatibility with other tape recorders unless one more amplifier is added, and cannot be said to have high commercial value.

Other problems associated with conventional tape recorders include the following. That is, when the contents of a meeting or lecture are recorded, it is not possible to easily select and listen to only the important recorded contents using conventional tape recorders, and it is necessary to listen back to the entire recorded contents. As a special example, there is a tape recorder that records a mark signal different from the recorded content at the same time, and detects this signal by using the review/queue operation to retrieve only the important recorded content. . However, such tape recorders are relatively complex and therefore expensive. Moreover, since the mark signal, which is completely different from the recorded content, is heard along with the recorded content even though it is for a short time, it is equivalent to scratching the recorded content, so this type of tape recorder is not popular. I haven't reached the point yet.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multichannel tape recorder that can solve the problems of the prior art described above.

Another object of the present invention is to provide a multichannel tape recorder that can be compatible with other tape recorders even if only one amplifier is provided.

Another object of the present invention is to provide a tape recorder that allows important parts of recorded content to be easily and reliably retrieved without complicating the configuration, and that does not require separate recording of mark signals that damage recorded content. The goal is to provide the following.

In order to achieve such an object, the present invention provides a combination of tracks that are recorded and played back by operating a recording/playback operating member in a tape recorder equipped with a magnetic head having a plurality of channels. The recording/playback operation member has a plurality of selection modes and can be selected by a selection member that can be operated without releasing the recording/playback operation member, and in a predetermined selection mode of the selection member, the recording/playback operation member is set to record. When in this mode, recording is performed only on a predetermined track of the magnetic tape corresponding to a predetermined channel, and an unrecorded portion is formed on another track of the magnetic tape corresponding to another channel; In another selection mode of the member, recording is performed on the other track on the magnetic tape when the recording/playback operating member is in the recording mode.

The tape recorder with the above configuration has two tracks, one
It is possible to use a 4-track 2-channel format that is compatible with the magnetic tape, or a 2-track 2-channel format that utilizes the full width of the magnetic tape. When the tape recorder is used for learning, the teacher's questions can be recorded on both tracks of the magnetic tape, and the correct answers can be recorded on only one track. In this case, unlike conventional teaching tapes where questions and answers are recorded continuously on the same track, students cannot hear the correct answer unless they operate the selection member. You cannot act as if you already know the correct answer.
In this way, in the learning tape recorder, in order to give the student time to think about the answer after listening to the question, the selection member moves from the position corresponding to the first selection mode to the position corresponding to the second or desired selection mode. It is desirable that the tape be configured so that it passes through a neutral position when it is displaced, and that feeding of the tape is interrupted at this neutral position.

The above-mentioned selection member can therefore be arranged in conjunction with a pause switch normally provided in conventional tape recorders, or it can be constituted by the pause switch itself.

When the tape recorder is of a two-channel type, in order to easily and quickly select a track combination, the selection member is provided with a first selection position, a neutral position, and a second selection position. It is advantageous to arrange the positions linearly one after the other.

Furthermore, in order to easily detect important points when the tape recorder is used for recording meetings and lectures, the present invention allows recording of both the first and second tracks when the selection member is in the first position. or the first
Playback is performed on the track, and the selected member is the second one.
When in the selected position, the second track can be recorded or both the first and second tracks can be played back. In that case, record only important parts on both tracks, or create unrecorded parts on the first track corresponding to important parts, and cue the overlapping or unrecorded parts of the first track. By detecting by the review operation, it becomes possible to easily and reliably extract the important parts. Moreover, there is no need to record a mark signal that is different from the recorded content, and therefore the recorded content is not damaged.

Embodiments of the present invention shown in the drawings will be described below.

1 to 3 show an embodiment of a tape recorder according to the present invention. This tape recorder 1 has a cassette loading chamber opened and closed by a lid 2 on the front side, and a recording operation member 3, a playback operation member 4, and a stop member 5 are arranged in a line on the side. Further, on this top surface, a fast forward/rewind/queue/review operation member 6, a microphone 7, an external microphone connection terminal 8, an output terminal 9, and a pause button 10 are arranged. As will be clear from what will be described later, in this example,
This pause button 10 also functions as a selection member for track combinations.

In the tape recorder of this embodiment, if only the playback operation member 4 is pushed inward, that is, in the width direction, the magnetic tape can be played back, and if both the playback operation member 4 and the recording operation member 3 are pushed in, the magnetic tape can be played back. Audio from the microphone 7 or an external microphone connected to the terminal 8 is recorded. The stop operation member 5 releases the playback operation member 4 during playback, and returns the playback operation member 4 and the recording operation member 3 from their respective lock positions to the stop position during recording.

A mode changeover switch 11 is arranged in relation to the recording operation member 3 in order to switch the electric circuit from the reproduction mode to the recording mode when the recording operation member 3 of the tape recorder is pushed in. That is, a connecting pin 14 is provided on the inward extension of the recording operation member that is slidably guided by guide pins 12 and 13 provided on the chassis of the tape recorder. This connecting pin 1
A switching lever 15 with one end engaged with the lever 4 is pivotally connected to the chassis by a pivot pin 16, and the other end of the lever 15 is formed into two forks, each of which is connected to a movable contact 17, 18.
shall be. A fixed contact 19 of the changeover switch 11 is arranged between these movable contacts. The fixed contact 19 is normally brought into contact with the movable contact 17 to keep the electric circuit of the tape recorder in the reproduction mode. On the other hand, by pushing in the recording operation member 3, the connecting pin 14 is displaced, and the lever 15 is rotated around the pin 16 to separate the movable contact 17 from the fixed contact 19, and move the movable contact 18 to the fixed contact 19. Make contact to switch the tape recorder's electrical circuit to recording mode.

The fast forward/rewind/cure/view operation member 6 is
When the tape recorder is stopped, moving it in the width direction will fast-forward, pushing it in the longitudinal direction will rewind, and when the tape recorder is playing, moving it in the width direction will cause the cue to push in the longitudinal direction. This shall be a well-known format in which a review and a review are conducted respectively.

As mentioned above, in this embodiment, the pause button 10 functions as a selection member for track combinations. This pause button 10 can be displaced between three positions arranged sequentially in a straight line: a first selection position X, a neutral position Y, and a second selection position Z. Normal pose position for interrupting. Therefore, tape running is not interrupted at the first and second selection positions X and Z, and the tape can be fed in any state such as recording/playback, fast forwarding, rewinding, reviewing, or cueing as required. However, the combination of tracks to be recorded or played back differs depending on each selected position.

As shown in the electrical circuit diagram of FIG. 4, in this embodiment, the tape recorder has two tracks and one channel, that is, a normal monaural system (see FIG. 11).
A four-track, two-channel format is used to provide compatibility with the magnetic head, and for this purpose, first and second magnetic heads 20 and 21 are provided corresponding to the first and second channels. On the other hand, these magnetic heads 20 and 21 can be selectively connected to one amplifier circuit 22. The magnetic heads 20 and 21 are composed of magnetic heads for both recording and playback, and their functions are those of the switches 11A and 11 that are linked to the mode changeover switch 11 described above.
Switch by 1B. As shown in FIG. 4, the state in which the movable contacts of the switches 11A and 11B are displaced to the right corresponds to the recording mode in which the fixed contact 19 of the changeover switch 11 contacts the movable contact 18. In the recording mode, the recording output terminal 22A of the amplifier circuit 22 is selectively connected to the input terminals of the magnetic heads 20 and 21 as will be described later. In addition,
It goes without saying that the recording output terminal 22A of the amplifier circuit 22 transmits the recording signal from the microphone 7 or the external input terminal 8 to the magnetic head.

In this embodiment, a selection switch 10A is further arranged between the changeover switches 11A, 11B and the magnetic heads 20, 21 and is interlocked with the pause button 10 as a selection member. Furthermore, battery 23
and a power switch 24 that is closed when operating members 3, 4, and 6 other than the stop operating member 5 are operated.
The amplifier circuit 22 and the motor 2
In the power supply circuit that supplies power to the control circuit 25 of No. 6, there is also a selection switch 1 interlocked with the pause button between the power switch 24 and the control circuit 25.
Place 0B. In the figure, reference numeral 27 indicates a speaker of the tape recorder, and 22B and 22C indicate a reproduction input terminal and a ground terminal of the amplifier circuit, respectively.

In the connected state of the circuit shown in FIG. 4, the pause button 10 is at the first selection position X, and the mode changeover switch 11 is at the recording position. Therefore, the output signal of the microphone 7 is transmitted to the amplifier circuit 22.
Recording output terminal 22A, changeover switch 11A,
11B and selection switch 10A to both magnetic heads 20 and 21. In this state, since the recording operation member 3 is further pushed in, the power switch 24 is closed, and therefore the amplifier circuit 22 is driven by the battery 23. At the same time, motor 26 is driven via selection switch 10B and control circuit 25. Therefore, as shown at the left and right ends of FIG. 8, the microphone output signals are recorded on both tracks of the magnetic tape 28 in the feeding direction. It should be noted that this solves the tape compatibility problem mentioned above.

Next, when the pause button 10 is moved to the neutral position Y, the two central contacts of the selection switch 10B are connected, so that the supply of power to the motor 26 is interrupted and the tape recorder enters the normal pause state.

When the pause button 10 is again moved to the first selection position X, recording for both tracks is resumed in the same manner as described above. However, when the pause button 10 is displaced to the second selection position Z, the circuit changes to the state shown in FIG. In other words, power is supplied to the amplifier circuit 22 and the motor 26 at the first selection position
is carried out in the same manner as in , but with selection switch 1
Since the output signal 0A transmits the output signal of the microphone 7 only to the second head 21, the magnetic tape is recorded only on the second track as shown in the center of FIG.

Next, when the tape recorder is switched to the playback mode with the pause switch 10 in the second selection position Z, the circuit enters the state shown in FIG. In this state, the output of the first head 20 is switched to the changeover switch 11.
B, 11A, the output of the second head 21 is also connected to the selection switch 10A and the changeover switch 11.
A, the signals are respectively supplied to the reproduction input terminal 22B of the amplifier circuit 22, and reproduced by the speaker 27. That is, in this state, both tracks are played back.

Furthermore, when the pause button is moved to the first selection position X in the tape recorder in the playback mode, as is clear from FIG. 22 input terminal 2
However, the output of the second magnetic head 21 is not supplied to the amplifier circuit 22. Therefore,
In this state, only one track is reproduced. Note that this playback track is not a recording track by the circuit of FIG. The reason for this will be explained later.

Regarding the tape recorder with the above configuration,
Various uses can be considered. However, its most common use is to allow important parts of recorded lectures and conferences to be easily retrieved. In other words, less important matters in a lecture or meeting, such as the moderator's greeting, should be
Recording is performed with the pause button 10 as a selection member at the second selection position Z. Then, the pause button 10 is moved to the first selection position X to continue recording the content of a relatively important lecture or conference. As mentioned above, the first selection position Short enough to be ignored.
As a result, relatively unimportant matters are recorded on only one track, and relatively important matters are recorded on both tracks (see Figure 8). On the other hand, if the pause button 10 is at the first selection position X during playback and the operating member 6 is operated to perform a review or queue, only tracks in which only relatively important matters are recorded are scanned. You can easily locate the relatively important location. To listen to this relatively important matter, playback may be performed with the pause button 10 located at the first selection position X, or the playback may be resumed by displacing the pause button 10 to the second selection position Z. It's okay. Also, if you record a less important part with the pause button 10 at the first selection position X, and record a relatively important part with the pause button 10 moved to the second selection position Z, the beginning of the important part The recording is performed by detecting an unrecorded portion of the first track. Tape recorders with this type of editing function have not been known in the past, and to edit with a conventional tape recorder, you have to either cut out unnecessary parts of the tape and re-splice it, or sometimes record only the important parts on another tape. I needed to redo it.

In the circuit shown in FIG. 4 described above, when the pause button 10 is at the first selection position
When the track is in the position, recording is performed on the other track or playback is performed on both tracks.

On the other hand, in the embodiment shown in FIG.
The selection switch 10A is configured to control only the activation/deactivation of the first head 20 corresponding to the first track, and the selection switch 10A is not connected to the changeover switch 11B as in the example of FIG. Therefore, if the pause button 10 is at the first selection position X, the changeover switches 11A, 11
In the illustrated state in which B is switched to the recording mode, recording is possible for both tracks, and the changeover switch 11
When A and 11B are switched to playback mode, the first
Reproduction is performed for each track.
Further, if the pause button 10 is in the second selection position Z, recording is performed only on the track corresponding to the second head 21 with the changeover switches 11A and 11B switched to the recording mode, and the changeover switches 11A and 11B are switched to the playback mode. In the state switched to , only the second track is reproduced (see FIG. 10).

In the same way as in the above-mentioned method of use, in order to be able to cue important matters in lectures and meetings using the tape recorder having the circuit shown in FIG. Recording is performed on both tracks in the state of X, and unimportant matters are recorded only on one track by moving the pause button 10 to the second selection position Z. If a review/queuing operation is performed with the pause button 10 at the first selection position X and a recorded portion is detected, it is possible to cue the important portion. Conversely, if you record the important part on the second track, the pause button 10 will move to the first track.
By performing the review/queuing operation while in the selected position and detecting unrecorded parts, it is possible to cue up important parts. In this case, the pause button 10 may be moved to the second selection position Z and playback may be performed. In the circuit shown in FIG. 9, the number of wiring lines can be reduced compared to the circuit shown in FIG. 4, and the output level can be kept almost constant even when changing channels during reproduction. Because head 20
This is because even if the impedances of the head 20 and the head 21 are different, a ring current will not flow between the head 20 and the head 21 and the output will not decrease or the distortion factor will change. According to the tape recorder having the circuits shown in FIGS. 4 to 9, it is possible to easily create a teaching material tape, for example, by recording questions on both tracks and recording answers on one track. During playback, it is possible to listen to only the questions, or alternately listen to the questions and the corresponding answers as required. As a result, a user who can answer without listening to the recorded answer can move on to the next question and continue learning, thereby increasing the learning effect. Moreover, while thinking about the answer, the pause button is placed in the neutral position Y to interrupt the running of the tape, and only when the answer is not known to the end is the pause button placed in the second selection position Z.
Because it was configured to listen to the answer by displacing the
Unlike the conventional case where questions and answers are recorded on the same track, the learner cannot act as if he or she already knew the correct answer.

As described above, the present invention provides a convenient tape recorder that can be used in a wide variety of applications not previously possible. Note that the tape recorder of the present invention can further enhance its usefulness by making it an ultra-small tape recorder that can fit in a shirt pocket. Furthermore, if the selection member is also used as a pause switch, it is only necessary to increase the number of contact points of the pause switch, thereby significantly increasing the commercial value.

[Brief explanation of the drawing]

1 to 3 are a plan view, a front view, and a side view of a tape recorder according to an embodiment of the present invention,
FIG. 4 is an electric circuit diagram showing an example of the circuit configuration of a tape recorder according to the present invention; FIGS. 5 to 7 are electric circuit diagrams in a state where the selection switch and/or changeover switch in the circuit of FIG. 4 are switched; Figure 8 is an explanatory diagram showing the track of the tape on which recording and playback are performed by the circuit in Figure 4;
10 is an electric circuit diagram similar to FIG. 4 showing a modified example of the circuit configuration of a tape recorder according to the present invention; FIG. FIG. 11 is an explanatory diagram showing a tape track on which recording and reproduction are performed by a conventional tape recorder. 10... Pause button, 10A, 10B... Selection switch, 11, 11A, 11B... Changeover switch, 20, 21... Magnetic head, 22... Amplifying circuit.

Claims (1)

[Scope of Claims] 1. A tape recorder equipped with a magnetic head having a plurality of channels, which has a plurality of selection modes for selecting combinations of tracks to be recorded and played back by operating a recording/playback operation member. and the recording/playback operation member can be selected by a selection member that can be operated without releasing the recording/playback operation member, and in a predetermined selection mode of the selection member, when the recording/playback operation member is in the recording mode, the selection is possible. Recording is performed only on a predetermined track of the magnetic tape corresponding to a channel, and a non-recording portion is formed on another track of the magnetic tape corresponding to another channel, and another selection mode of the selection member is formed. The tape recorder is characterized in that recording is performed on the other track on the magnetic tape when the recording/reproducing operation member is in a recording mode. 2. The tape recorder according to claim 1, wherein the selection member is movable between a plurality of selection positions corresponding to the plurality of selection modes and a neutral position between these selection positions, A tape recorder characterized in that it is configured so that recording and playback are interrupted at a neutral position.