JPS587465Y2 - playback device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a playback device having a novel function, and in particular to a type of playback device such as a tape recorder that can simultaneously play back two signals from a plurality of tracks each recording signals with different contents. It provides equipment.

International travelers are required to have enough conversational skills to communicate at foreign airports, hotels, shops, etc.

Therefore, it would be extremely convenient if there was a device that could record the basic conversations that normally take place in each of the above locations on a magnetic tape or the like, and then select and reproduce the necessary conversations depending on the location.

The present invention was developed in response to the above-mentioned requirements, and is capable of constantly reproducing one track, transmitting this reproduced signal to one of the speakers or earphones, and selectively reproducing the other tracks. Then, this reproduction signal is applied to the other of the speaker or earphone.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the appearance of a tape player 1 according to the present invention, and FIG. 2 shows a magnetic tape 2 played back by the tape player 1. As shown in FIG.

This tape 2 is stored in a compact cassette, a mini cassette, or any other known tape cassette, and is provided with, for example, four tracks 3a t 3b and 3ct3d.

Each of the tracks 3a to 3d records the same content, for example, English, French, German, and Japanese.

Further, each track 3a to 3d has five addresses 4a, 4, for example.
b, 4C94dt4e (however, in Figure 2, 4a, 4b, 4
(only c is shown), and 1 is placed in front of each address.
Address signals 5a, 5b, 5e, 5d, and 5e are recorded.

- At the above addresses 4a to 4e, conversation signals from various countries are recorded, for example, having the following contents.

1st address 4a - Conversation that usually takes place at the airport.

Second address 4b - Conversation that usually takes place at a hotel.

3rd number 40 - Necessary conversation when shopping.

4th address 4d ~ Greetings.

5th address 40~Other basic conversations.

Further, each address 4a to 4e is further divided into a plurality of conversation blocks 6, and each block records conversations from each country corresponding to the above-mentioned contents of each address.

The tape player 1 shown in FIG. 1 is for selecting and playing back the necessary address and block 6 from the tape 2.
A tape cassette 8 containing the tape 2 is mounted in the cassette mounting portion 7.

Also, selection 1A for selecting tracks 3a to 3d of tape 2.
9. Push button 10a for selecting addresses 4a to 4e.

Keys 11 for selecting blocks 10b, 10c, 1 oa, 10e and block 6 are provided.

For example, ten keys 11 are provided, and each key 1
1 is numbered 1 to 00, and by pressing one or a combination of two keys, a block 6 at a desired address on the tape 2 can be selected.

The tape player 1 is further provided with a speaker 12, an earphone 13, a cue button 14, a review button 15, a stop button 16, a play/stop switch 17, a power switch 18, an address display section 19, and the like.

This tape player 1 is equipped with two magnetic heads for reproduction, one magnetic head always reproduces the track 3d on which Japanese words are recorded on the tape 20, and the other magnetic head is selected by the knob 9. It is forced to play only the track.

The Japanese conversation reproduced from track 3d is added to the earphone 13, and the foreign language conversation reproduced from other tracks is added to the speaker 12.

The helmet, speaker 12, and earphone 13 may be used in the opposite manner to the above, or a mixture of Japanese and foreign languages may be added to the speaker 12 or earphone 13.

Furthermore, a means for selecting among the above three methods may be separately provided.

Next, a method of using the tape player 1 configured as described above will be explained.

First, the power switch 18 is turned on, and then the knob 9 is used to select the track on which the desired foreign language is recorded from among the tracks 3a to 3c.

Next, one of the push buttons 10a to 10e is pressed to specify the address where the desired content is recorded, and the block where the desired conversation is recorded is further specified using the key 11.

By the above operation, the tape of cassette 8 is transferred to address display area 1.
The device is automatically fast-forwarded or rewound from the current address displayed at 9 to the designated address, and further fast-forwarded or rewound to the 60th block designated by key 11, and then enters a playback state.

This allows the user to hear the desired foreign language conversation from the speaker 12.

At the same time, the user can hear the Japanese language corresponding to the foreign language content through the earphones 13.

In addition, cue button 14, review button 15 and stop button 16
By operating the changeover switch 17, it is also possible to manually cue the desired conversation block 60.

Next, cue the address using the cue button 14 and the review button 1'5-.
A case where the operation is performed manually using the stop button 16 and the changeover switch 17 will be explained.

In this case, push buttons 10a to 10e and key 1 in FIG.
1 can be omitted.

Further, the cue button 14 and the review button 15 are forced to operate in two stages.

That is, each phase 14, 15 is locked when pressed once and forced to unlock when pressed a second time - in these locked and unlocked states the tape can be fast-forwarded or rewound. , When you release your finger in the above-mentioned unlocked state to turn it off, fast forwarding or rewinding is canceled.Next, the manual operation method will be explained.

First, turn on the power switch 18, specify the track to be played using the knob 9, then press the cue button 14 or the review button 15 to fast-forward the tape from the current address displayed on the address display section 19 to the desired address. Or rewind.

As a result, the display on the address display section 19 changes sequentially as the tape runs.

When the displayed address is one address before the desired address, the queue button 14 or the review button 15 is pressed to release the lock.

The tape is further fast-forwarded or rewound from this state,
When the desired address is displayed, the motor automatically stops and the tape stops running.

At this time, if the changeover switch 17 is switched to FWD mode, the tape is once stopped and then run at normal speed again to enter the playback state.

Further, when the changeover switch 17 is switched to the 5TOP side, the tape remains stopped, and from this state, by switching the changeover switch 17 to FWD measurement, it is possible to enter the playback state.

Next, an embodiment of an electric circuit for performing the above operation will be described with reference to FIG.

In FIG. 3, a signal reproduced from a tape 2 by a magnetic head 20 is amplified by a preamplifier 21 and an amplifier 22, and then sent to a low-pass filter 23 composed of a capacitor C1 and a resistor R1. There is.

The tape 20 address signals 5a to 5e are, for example, recorded signals of 50 Hz, and the low-pass filter 23 passes these 50 Hz address signals to the selector switch 24.
It is designed to be added to the a contact side of the.

Further, the output of the amplifier 22 is applied to the b contact of the changeover switch 24 via a switch 25.

The changeover switch 24 is closed to the A contact side in the playback state, and is closed to the B contact side when the cue or lego button is activated.The switch 25 is closed when the cue button 14 or the lego button 15 is unlocked. be.

A signal obtained from the movable contact C of the changeover switch 24 is transmitted to the base of the transistor Q1 through a low-pass filter 26 composed of a resistor R2 and a capacitor C2.

The low-pass filter 26 passes address signals 5a to 5e obtained when the tape is running at high speed, that is, during cue and review.

Also, transistor Q1 is biased by resistors R3 and R4-R5, and its collector is connected to the next stage transistor Q2.
connected to the base of.

Also, the collector of transistor Q1 and the transistor Q20
A capacitor C3 is connected in parallel with the base.

Further, a load resistor R4 is connected to the collector of the transistor Q2.

The collector output of this transistor 02 is connected to one trigger terminal of a flip-flop 27.

This flip-flop 27 includes a pair of transistors Q3,
The collector output of the transistor Q2 is applied as a trigger signal to the base of the transistor Q3 through the capacitor C4 and the diode D1'.

Also, by closing the switch 28, the power terminal 29
The power supply voltage 10B supplied to the capacitor C5 and the diode D2 serve as other trigger signals for the flip-flop 27.
The base of the transistor Q4 is connected to the base of the transistor Q4 through the base of the transistor Q4.

This switch 28 includes a queue button 14, a review button 15,
When the stop button 16 and changeover switch 17 are operated, they are momentarily closed and then opened in conjunction with the respective operations.

On the other hand, a tape drive motor 30 of the tape player 1 is provided with a known servo circuit.

A rotation speed detection signal of the motor 3o detected by a frequency generator 31 interlocked with the motor 30 of this servo circuit system is applied to a servo amplifier 32.

A speed control signal proportional to the rotational speed from the servo amplifier 32 is applied to the base of the motor drive transistor Q5 via the resistor R7, thereby controlling the collector current of the transistor Q5. is released in such a way that the current flowing through it is controlled.

As a result, the motor 30 is controlled so that its rotational speed is always constant.

The base of this transistor Q50 is connected to the collector of a switching transistor Q6, and the base of this transistor Q6 is connected to one output terminal of the flip-flop 27, that is, the collector of the transistor Q3.

Next, the operation of the circuit configured as described above will be explained.

First, turn on the power switch 18, then turn on the address display section 19.
To fast forward or rewind from the current address displayed on the screen to the desired address, press cue button 14 or review button 1
Press 5 to lock this.

In conjunction with this, the switch 28 is once closed and then opened.

As a result, the power supply type E+B is applied as a trigger signal to the base of the transistor Q40 of the flip-flop 27 via the diode D2 and the capacitor C5, and this transistor Q4 becomes non-conductive.

Therefore, transistor Q3 becomes conductive and its collector voltage drops, causing transistor 06 to become non-conductive.

The motor 30 is also driven to fast-forward or rewind the tape 2.

At this time, the changeover switch 24 is closed to the b contact side and the one switch 25 is open.

Therefore, the reproduction signal of the magnetic head 20 is transmitted to the transistor Q1.
However, the transistor Q1 becomes non-conductive and the transistor Q2 becomes conductive due to the charging voltage of the capacitor C3.

In this state, the tape 2 is fast forwarded or rewound.

Along with this, the display address on the display section 19 changes sequentially.

Next, when the display address becomes the address immediately before the desired address, the queue button 14 or the review button 15 is pressed to release the lock, and the switch 25 is closed in conjunction with this.

As a result, the reproduction signal of the magnetic head 20 is transferred to the preamplifier 21.
, the amplifier 22, the switch 25, and the changeover switch 24 from the b contact point through the movable contact c to the low-pass filter 26.
is attacked by

The low-pass filter 26 passes only the signal from Chi 120, which is traveling at high speed.

The output of the low-pass filter 26 when the first address signal passes is applied to the base of the transistor Q, thereby making the transistor Q1 conductive.

This causes capacitor C3 to discharge through transistor Q□, causing the base voltage of transistor Q2 in the next stage to drop.

This transistor Q2 becomes non-conductive.

As a result, the collector voltage of the transistor Q2 rises, and this voltage is passed through the capacitor C4 and the diode D1 as a trigger signal to the transistor Q of the flip-flop 27.
Added to the base of 3.

Therefore, flip-flop 27 is inverted, transistor Q3 becomes non-conductive, and transistor 04 becomes conductive.

As a result, the base voltage of transistor Q6 rises and this l
- Transistor Q6 becomes conductive and therefore transistor Q5 becomes non-conductive.

As a result, the rotation of the motor 30 is stopped, and the tape 2 is stopped at the beginning of the desired address.

At this time, when the queue button 14 or the review button 15 is turned off, the switch 25 is opened.

Also, after the first address signal passes. Since the output of the low-pass filter 26 disappears, the transistor Q1 becomes non-conductive again, and the transistor Q2 becomes conductive again as the capacitor C3 is charged.

When the FWD button 17 is switched to the FWD position in this state, the changeover switch 24 is closed to the contact alIII, and the tape 2 is run at the normal speed to enter the playback state.

Through the playback circuit system (not shown), the Japanese conversation played from the track 3d can be heard through the earphone 13, and the foreign language conversation played from other selected tracks can be heard through the speaker 12. can.

When the tape 2 further runs in this state and the next address signal is reproduced by the magnetic head 20, this signal is transmitted to the preamplifier 20.
1. The signal is taken out from the low-pass filter 23 through the amplifier 22.

This signal is further applied from contact a of changeover switch 24 to movable contact C and low-pass filter 26 to the base of transistor Q1.

This causes transistor Q1 to conduct and capacitor C3 to
is discharged - transistor Q2 becomes non-conductive.

Therefore, flip-flop 27 is inverted and transistor Q
3 becomes non-conductive, and transistor Q6 becomes conductive.

As a result, transistor Q5 becomes non-conductive and motor 30
stops, the tape 2 completes reproduction of the desired address, and is stopped at the beginning of the next address.

When the above-mentioned fast forwarding or rewinding is completed and the tape stops at the desired address, the selector switch 17 is already set to F.
When it is switched to the WD side, when the cue button 14 or the ready button 15 is turned OFF, the changeover switch 24 is switched to the contact a side and the playback operation is immediately performed.

In addition, when the motor 3o is rotating, the frequency generator 3
1 and servo circuit 32, the above-described control operation is always performed.

The above description has been made regarding the case where the circuit is applied to the tape player 1 shown in FIG. 1, but the circuit shown in FIG. Can be applied in cases.

The present invention provides a reproducing apparatus for reproducing a recording medium having a plurality of tracks each recording a different signal.
A predetermined one of the plurality of tracks is constantly played while other tracks are selectively played, and a playback signal of the predetermined track is applied to one of the earphone and the speaker, and the The reproduction signal of the selected track is applied to the other of the earphone and the speaker.

Therefore, according to the present invention, for example, each track can have the same content in each country's foreign language.

If you record Japanese on one track and always play it, you can selectively play the desired foreign language as needed and listen to the corresponding Japanese at the same time.
It is particularly suitable for use when studying a foreign language or traveling abroad.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a tape player showing an embodiment of the present invention, Fig. 2 is a front view showing an embodiment of a magnetic tape applied to the present invention, and Fig. 3 is a cueing diagram applied to the present invention. FIG. 2 is a circuit diagram showing an example of a circuit for. In addition, according to the symbols used in the drawings, 1 is a tape player, 2 is a magnetic tape, 3a to 3d are tracks, and 4a is a tape player.
-4e is the address, 6 is the conversation block, 8 is the cassette, 9 is the track selection knob, 12 is the speaker power, and 13 is the earphone.

Claims (1)

[Scope of utility model registration request] In a reproducing device for reproducing a recording medium having a plurality of tracks each recording a different signal, - always reproducing a predetermined one track among the plurality of tracks while selectively reproducing other tracks. The playback device applies the playback signal of the predetermined track to one of the earphones and the speaker, and applies the playback signal of the selected track to the other of the earphone and the speaker.