JPS5819710Y2 - tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape recorder using an endless tape having a plurality of channels.

This type of tape recorder is convenient for use in guidance, music, language education, etc., since it is easy to locate the beginning of a message.

This invention has a repeat playback function, ■message playback function,
The purpose of the present invention is to provide a tape recorder whose continuous playback function can be easily switched using a switch.

Hereinafter, one embodiment will be described with reference to the drawings.

1 is a microphone, Ml-M3 is ON when a message is being recorded from the microphone 1 (switched as shown)
, is a contact that turns 0FF (as shown) when recording ends.

2 is a monostable multi-circuit configured to keep the output at level 1 for a certain period of time when the contact M2 changes from ON to OFF, and 3 is a message that oscillates when the output of the monostable multi-circuit 2 is at level 1. An oscillation circuit for an end signal, 4 an amplifier, 5 a speaker, 6 a head, and 7 an endless wide tape provided with a plurality of channels.

8 is a conductive foil installed on a part of the tape 1, 9 is a sensing pin for detecting the conductive foil, and the position where the sensing pin 9 detects the conductive foil a is called a start position.

10 is a start position detection circuit whose output is at level 0 when the start position is detected.

Reference numeral 11 denotes a message end detection circuit, and when the output signal of the oscillator 3 or its reproduction signal is detected by a filter in the output of the amplifier 4, the output is set to level 1, and the output of the start position detection circuit is set to level 0. It is configured so that it is reset to level 0 when the

Reference numeral 12 is configured such that the output level becomes 1 when the output of the message end 1 detection circuit 11 becomes level 1, and the output level becomes 0 after a certain period of time after the output of the message end detection circuit 11 is reset to level 0. The slow recovery circuit 13 is a monostable multi-circuit whose output becomes level 1 for a certain period of time when the output of the start position detection circuit 10 changes from level 1 to level 0.

ANDI~AND2 are AND circuits whose output is level 1 when all inputs are level 1, OR1~OR2 are OR circuits whose output is level 1 if one of the inputs is level 1,
(2) Nv1 is an inverter circuit whose output level is 1 when the input is level 0, and whose output is level 0 when the input is level 1.

14 is a feed magnet control circuit configured to operate a feed magnet 15, which will be described later, when the AND circuit AND1 or the monostable multi-circuit 13 is at level 1; 15 is a feed magnet that controls the head 6 by one time each time it is operated;
The tape is advanced channel by channel in the width direction of the tape 7.

16 indicates that the output of the start position detection circuit 10 is level 1.
This is a slow recovery circuit configured such that the output level becomes 1 as soon as the start position detection circuit 10 reaches level 0, and the output becomes level 0 after a certain period of time after the output of the start position detection circuit 10 becomes level 0. The delay recovery circuit 12 is longer than the time for the sensing pin 9 to pass over the conductive foil 8.
is set to a time shorter than the slow recovery time of

11 is a tape drive control circuit configured to operate a drive magnet 18 and a motor 19, which will be described later, when the output level of OR circuits OR1 and OR2 is 1; 18 is a drive magnet; and 19 is a motor; 18. When the motor 19 is activated, the tape 7 is moved by well known techniques.

20 is a high-speed magnet control circuit configured to operate a high-speed magnet 21, which will be described later, when the output of the message end detection circuit 11 is level 1; 21 is a high-speed magnet; When the high-speed magnet 21 is actuated while the tape 7 is running, the tape is caused to run at high speed using a well-known technique (for example, Utility Model Application No. 53220 of 1962).

22 is a start switch; 23 is a last switch that operates in conjunction with the head 6 when the channel reaches the last position; and R1-R5 are recording switches which are switched as shown in the figure during recording.

OP□~OPa are function changeover switches.When the COM terminal and the RFP terminal are connected, the same channel is played repeatedly.When the COM terminal and the SNG terminal are connected, it plays until the message end signal is reached. One-message playback function, which when the signal is detected, runs to the start position at high speed and enters standby mode.
When the M terminal and CON terminal are connected, you can switch between three functions: a continuous playback function that plays continuously and waits on the last channel.

Next, the operation will be explained.

First, the recording operation will be explained.

When the recording switch is operated, R1 to R5 are switched as shown.

Further, when the contact point M is switched as shown, the OR circuit OR□ becomes output level 1, which is controlled by the tape drive control circuit 17, and the drive magnet 18 and motor 19 are operated to cause the tape 7 to travel.

Then, each time the tape 7 goes around, the start position detection circuit 1
The output of 0 changes from level 1 to level 0, and the monostable multi-circuit 13 remains at level 1 for a certain period of time and is controlled by the feed magnet control circuit 14, and the feed magnet 15 operates to advance the head 6 channel by channel.

On the other hand, the message from microphone 1 is amplified by amplifier 4 via contact M1 and recording switch R1, and is amplified by amplifier 4 via contact M1 and recording switch R1.
3, the output is applied to the head 6 via R2 and the tape 1
will be recorded to.

When the recording of the message is completed and the contact M is turned OFF (as shown in the figure), the monostable multi-circuit 2 remains at the output level 1 for a certain period of time, the oscillator 3 oscillates, and the oscillation signal is transmitted to the contact M.
1. The signal is amplified by the amplifier 4 via the recording switch R1, and its output is applied to the head 6 via the recording switches R3 and R2 and recorded on the tape 7.

Next, the operation of the repeat playback function will be explained.

R the 00M terminals of function changeover switches OP1 to OP3.
Connect to the FP terminal and select repeat playback function operation.

Here, the AND circuits AND1, AND2, and the OR circuit O to which the function changeover switches OP1 to OP3 are connected are connected.
Looking at the input/output state of R2, one of the input terminals of the AND circuit AND1 is at level 0, as the REP terminal of the function changeover switch OP1 is grounded via the 00M terminal.

Therefore, the output of the AND circuit AND1 is at level 0 regardless of the signal at the other terminal.

Next, one of the input terminals of the AND circuit AND20 is at level 0 because the REP terminal of the function changeover switch OP2 is grounded via the C0M terminal.

Therefore, the output of the AND circuit AND2 is at level 0 regardless of the signals at the other terminals.

In addition, the OR circuit OR2 sends signals indicating that the start switch n is connected (as shown in the figure), that the tape 7 is at the start position, and that the tape I is at the start position, to the REP terminal of the function switching switch mP3. The input terminal is at level 0 because it is input to the OR circuit OR2 via the C0M terminal and the output from the AND circuit AND2 is at level 0.

Therefore, the output becomes level 0.

At this point, if you operate the start switch 22 to turn it off,
OR circuit 0R2 to which the start switch 22 is connected
The 0 input terminal is opened from level 0, and its output becomes level 1.

This signal is input to the tape drive control circuit 17 via the recording switch R5, and is controlled by this circuit to operate the drive magnet 18 and motor 19 to drive the tape 7.

After the start switch 22 is connected, the conductive foil 8 passes through the sensing pin 9.The start position detection circuit 1
0 becomes level 1, and the output of OR circuit OR2 becomes level 1, which is controlled by tape drive control circuit 17 via recording switch R5, actuates drive magnet 18 and motor 19, and runs tape 7.

When the tape 7 completes one revolution and reaches the start position, the output signal 1 of the start position detection circuit 10 becomes level 0.

This output is input to the slow recovery circuit 16 for a certain period of time (longer than the time it takes the sensing pin 9 to pass over the conductive foil 8).
The output of the slow recovery circuit 16 is sent to the sensing pin 9 until the
Level 1 is maintained despite the presence of conductive foil 8.

This output is the C0M terminal of the function changeover switch OP3,
The signal is input to one terminal of the OR circuit 0R20 through the RF Pi, and the output of the OR circuit OR2 continues to be level 1 regardless of the level of the other terminals.

This signal is input to the tape drive control circuit 17 via the recording switch R5, causing the drive magnet 18 and motor 19 to continue operating, thereby causing the tape 70 to continue running.

Further, when the output of the start position detection circuit 10 changes from level 1 to level 0, the output of the monostable multi-circuit 13 becomes level 1 for a certain period of time.

This signal is input to one terminal of the AND circuit AND10, but the other terminal of the AND circuit AND1 becomes level 0 because the RFP@ terminal of the function changeover switch OPI is connected to the C0M terminal, and the output of the AND circuit AND1 becomes a single terminal. Regardless of the output signal of the stable multi-circuit 13, it cannot become level 1.

Therefore, the magnet control circuit 14 cannot operate, and the feeding magnet 15 does not operate.

As a result, the tape 7 repeatedly runs only on the same channel, and the message recorded on the tape 7 is reproduced by the head 6, amplified by the amplifier 4, and repeatedly reproduced by the speaker 5.

Next, the operation of the one-message playback function will be explained.

Set the C0M terminals of function changeover switches OP1 to OP3 to S.
Connect to the NG terminal to select 1 message playback function operation.

Here, AND circuits AND1, AND2, and OR circuit 0 to which function changeover switches OP1 to OP3 are connected are connected.
Looking at the input/output status of R20, one of the input terminals of the AND circuit ANDI is disconnected from ground because the SNG terminal of the function changeover switch OP1 is connected to the C0M terminal, and the AND circuit is connected to the AND circuit by the signal from the other terminal. circuit AND
1's output will change.

Next, one of the input terminals of the AND circuit AND20 is disconnected from the ground because the SNG terminal of the function changeover switch OP2 is connected to the C0M terminal, and the output of the AND circuit AND2 changes depending on the signal from the other terminal. It turns out.

Further, the input terminal of the OR circuit OR2 is at level 0 because the start switch 22 is connected (as shown in the figure) and the tape 7 is at the start position.

Therefore, the output becomes level 0.

In addition, the SNGm child of function changeover switch OP3 is C0.
Since it is connected to the M terminal, control from the slow recovery circuit 16 via the function changeover switch OP3 is cut off.

Here, the input terminal of the OR circuit 0R20 connected to the start switch 22, which is turned off by operating the start switch 22, is opened from level 0 and its output becomes level 1.

This signal is input to the tape drive control circuit 17 via the recording switch R5, and is controlled by this circuit to operate the drive magnet 18 and motor 19 to drive the tape 7.

After the start switch 22 is connected, when the conductive foil 8 passes the sensing pin 9, the start position detection circuit 10
becomes level 1, and the output level of OR circuit OR2 becomes 1.
1, the drive magnet 18 and motor 19 are operated to cause the tape 7 to travel.

When the tape I completes one rotation and reaches the start position, the output of the start position detection circuit 10 changes from level 1 to level 0.

This output is input to the slow recovery circuit 16 for a certain period of time (longer than the time it takes the sensing pin 9 to pass over the conductive foil 8).
The output of the slow recovery circuit 16 is sent to the sensing pin 9 until the
When the level is maintained at 1 even though there is a conductive foil 8 in It becomes level 0.

This signal is input to the inverter circuit INVI, and its output is set to level 1.

As a result, the output of the AND circuit AND2 becomes level 1, and the output of the OR circuit OR2 becomes level 1, which controls the tape drive control circuit 17 via the recording switch R5, keeps the drive magnet 18 and motor 19 operating, and taper Continue running.

Furthermore, every time the tape 7 reaches the start position, the output of the start position detection circuit 10 changes from level 1 to level 0, and the output of the monostable multicircuit 13 remains level 1 for a certain period of time.

This signal is input to one of the input terminals of the antenna circuit ANDI, its output is set to level 1 for a certain period of time, the magnet control circuit 14 is controlled via the recording switch R4, the feed magnet 15 is activated, and the head 6 is set to one channel. Proceed step by step.

As a result, the tape 7 advances the head 6 one channel each time it reaches the start position until the message end signal is detected, and the message recorded on the tape is played back by the head 6 and amplified by the amplifier 4. Then, the speaker 5 will reproduce one message.

Next, when a message end signal is detected, the message end detection circuit 11 is set to level 1.

When the message end detection circuit 11 is set to level 1, the high speed magnet 21 is operated under the control of the high speed magnet control circuit 20 to cause the Qi 7'7 to travel at high speed.

When the tape 7 travels at high speed and reaches the start position, the start position detection circuit 10 becomes level 0, resets the message end detection circuit 11, and sets the level to 0, which is controlled by the high speed magnet control circuit 20, and the high speed magnet 21 will be restored.

Further, even if the output of the message end detection circuit 11 becomes level 0, the output of the fixed time delay recovery circuit 12 remains level 1, and the output of the inverter circuit INV1 continues to be level 0.

Note that even if the start position detection circuit 10 reaches level 1, the output of the slow recovery circuit 16 remains at level 1 for a certain period of time, but the slow recovery time of the slow recovery circuit 12 is set longer than the slow recovery time of the slow recovery circuit 16. Therefore, the output of the AND circuit AND2 cannot become level 1.

Therefore, the output level of the OR circuit OR2 becomes 0, and the tape drive control circuit 17 is not controlled, so that the drive magnet 18 and motor 19 are not operated, and the tape 7 stops running, resulting in the timing state.

Next, the operation of the continuous playback function will be explained.

Connect the C0M terminals of function changeover switches OP1 to OP3 to C.
Connect to the ON terminal to select continuous playback function operation.

Here, AND circuits ANDI, AND2, and OR circuit 0 to which function changeover switches OP1 to OP3 are connected
Looking at the input/output status of R20, one of the input terminals of the AND circuit AND1 is disconnected from ground because the CON terminal of the function changeover switch OP1 is connected to the C0M terminal, and the signal from the other terminal AND circuit AN
The output of D1 will change.

Next, one of the input terminals of the AND circuit AND2 is the CON terminal of the function changeover switch OP2, which is grounded via the C0M terminal, and is at level 0.

Therefore, the output of the AND circuit AND2 is at level 0 regardless of the signals at the other terminals.

Further, the OR circuit OR2 is connected to the start switch 22 (
As shown in the figure), that the tape 7 is at the start position, and that the tape 7 is at the start position are sent to the OR circuit OR2 via the CON and COM terminals of the function changeover switch OP3 and the last switch 23. The input terminal is at level 0 because it is input and the output of the AND circuit AND2 is at level 0.

Therefore, the output becomes level 0.

At this point, if you operate the start switch 22 to turn it off,
OR circuit OR2 to which the start switch 22 is connected
The input terminal of is opened from level 0, and its output becomes level 1.

This signal is input to the tape drive control circuit 17 via the recording switch R5, and is controlled by this circuit to operate the drive magnet 18 and motor 19 to drive the tape 7.

After the start switch 22 is connected, when the conductive foil 8 passes the sensing pin 9, the start position detection circuit 10 is activated.
becomes level 1, and the output of OR circuit OR2 becomes level 1.
Then, the tape drive control circuit 17 operates the drive magnet 18 and motor 19 under the control of the tape drive control circuit 17 via the recording switch R5, thereby causing the tape 7 to travel.

When the tape 7 completes one revolution and reaches the start position, the output of the start position detection circuit 10 changes from level 1 to level 0.

This output is input to the slow recovery circuit 16 for a certain period of time (
Even though the conductive foil 8 is present on the sensing pin 9, the output of the slow recovery circuit 16 remains at level 1 until a time longer than the time it takes for the sensing pin 9 to pass over the conductive foil 8 has elapsed.

This output is sent to the OR circuit O via the function changeover switch OP30COM terminal, CON terminal, and last switch 23.
It is input to one terminal of R2, and the output of the OR circuit OR2 continues to be level 1 regardless of the level of the other terminals.

This signal is input to the tape drive control circuit 17 via the recording switch R5, causing the drive magnet 18 and motor 19 to continue operating, thereby causing the tape 70 to continue running.

Furthermore, each time the tape 7 reaches the start position, the output of the start position detection circuit 10 changes from level 1 to level 0, and the output of the monostable multicircuit 13 remains at level 1 for a certain period of time.

This signal is input to one of the input terminals of the AND circuit ANDI, its output is set to level 1 for a certain period of time, the magnet control circuit 14 is controlled via the recording switch R4, the feed magnet 15 is activated, and the head 6 is set to 1. Proceed channel by channel.

As a result, the tape 7 advances the head 6 one channel each time it reaches the start position, and the message recorded on the tape I is played back by the head 6, amplified by the amplifier 4, and continuously transmitted to the speaker 5. It will be played.

Next, when the tape T reaches the start position and the channel that operates in conjunction with the head 6 comes to the last, the last switch 23 is disconnected, the signal from the slow recovery circuit 16 is disconnected, and the start position detection circuit 10 becomes level 0, the output of the OR circuit OR2 becomes level O, and the tape drive control circuit 17 is no longer controlled, the drive magnet 18 and motor 19 are restored, and the tape 7 is stopped and placed in a standby state.

As is clear from the above explanation, when this invention is used to guide an exhibit, for example, if you want to explain repeatedly, you can use the repeat playback function, and if you want to explain in one message, you can use the repeat playback function, and if you want to explain in one message, you can use the message length. You can switch between the one-message playback function, which you never have to play, and the continuous playback function, when you want to play continuously like a normal tape recorder, so you can use one unit depending on the situation. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention.
is a microphone, 3 is an oscillator, 4 is an amplifier, 6 is a head, 7 is a tape, 8 is a conductive foil, 9 is a sensing pin, 10 is a start position detection circuit, 11 is a message end detection circuit, 1
2.16 is a slow recovery circuit, 13 is a monostable multi-circuit, 15
is a feed magnet, 18 is a drive magnet, 19 is a motor, and 21 is a high-speed magnet.

Claims (1)

[Scope of utility model registration request] In a tape recorder using an endless tape having multiple channels in the width direction, a start position detection circuit is installed on a part of the tape to detect the start position, and the end of a series of recorded messages is detected. a message end detection circuit; a tape running means for running the tape at a speed necessary for recording or reproducing and switching the tape to high speed running by detecting the end of a message; and a start position detection circuit. A head feeding means that advances the head channel by channel according to the output, and tape stop and head feeding controlled by the output of the start position detection circuit are selected according to the repeat playback function, one-message playback function, or continuous playback function. The switch means has a repeat playback function for repeatedly playing the same channel regardless of the output of the start position detection circuit, and the switch means has a repeat playback function that allows the message end detection circuit to detect the end of the message. After that, a one-message playback function for running the tape until the output of the start position detection circuit is obtained, and the switch means, each time the tape reaches the start position, the output of the start position detection circuit is activated. A tape recorder having a continuous playback function of operating the head feeding means to advance the head one channel at a time, and continuing the running of the tape for continuous playback.