JPS5826342A - Tape recorder - Google Patents

Abstract

PURPOSE:To enable a titled tape recorder to wait for the next instruction after program search for a desired recording, by converting a tape running mechanism to a reproduction waiting state and then to a high-speed reproducing state when the other tape running mechanism is at the reproduction state. CONSTITUTION:In operating a reproducing button of the 2nd tape run mechanism 2, a motor M2 driving a capstan is rotated to obtain a reproduction state. Next, in operating the reproducing button of the 1st tape running mechanism 1, the reproducing button is locked for a reproduction waiting state. In this reproduction waiting state, when the 2nd tape running mechanism 2 is stopped at the end, the reproduction state of the 1st tape running mechanism 1 is released to obtain the reproduction state. In this reproducing state, when the fast forwarding button or the rewinding button of the 1st tape running mechanism 1 is operated, an interrecording detector 3 becomes operative and high-speed reproducing state can be obtained. Thus, the recorder can wait for the next instruction after the program search for a desired recording.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is equipped with two tape running mechanisms, and the tape running mechanism in the playback standby state automatically enters the playback state after the tape drive mechanism stops in the playback state and performs continuous automatic play. The purpose of the tape recorder is to create a high-speed playback state by operating the fast forward or rewind button of the tape running mechanism in the playback standby state, and to locate the beginning of the desired song. The object of the present invention is to provide a tape recorder that can perform the following functions.

The present invention will be described below with reference to drawings of embodiments. The drawing shows an embodiment of the tape recorder of the present invention,
In the figure, 1 is a first tape running mechanism, 2 is a second tape running mechanism, and 3 is an inter-track detector, which allows playback from a playback head (not shown) constituting the first tape running mechanism 1. It is configured to input a signal and output a predetermined pulse signal when a silent section of the tape is detected.

The first tape running mechanism 1 is a motor M1 for rotationally driving a capstan and a reel (not shown).
The motor M1 includes a transistor TR1 and resistors R1 and R2 that constitute a drive circuit for the motor M1. The second tape running mechanism 2 includes a motor M2 for rotationally driving a capstan and a reel (not shown), and a transistor TR8 and a resistor R91R10 forming a drive circuit for the motor M2. 51-1181-21
Reference numerals 81-3 are mutually interlocking switches, which are turned on and off in response to the operation of the fast forward button or the rewind button of the first tape running mechanism 1. 52-
1 and 52-2 are mutually interlocking switches which are turned on and off in response to the operation of the fast forward button or the rewind button of the second tape running mechanism 2.

S3 is a switch that supplies power to the motor M1, and is turned on and off in response to the operation of the playback button, fast forward button, and rewind button of the first tape running mechanism 1. $4 is a switch that provides a power supply of 1 B to the motor M2, and is turned on in response to the operation of the play button, record button, fast forward button, and rewind button of the second tape running mechanism 2.

It is set to be turned off. S6 is turned on in response to the operation of the playback button of the first tape running mechanism 1.

A switch that is turned off, S6, is a function switch that is turned on and off in response to the operation of the recording button of the second tape transport mechanism 2, s8 is a dubbing switch, and S9 is a switch that is turned on and off in response to the operation of the recording button of the second tape transport mechanism 2. This switch is used to selectively use the second tape running mechanisms 1 and 2 independently or in conjunction with each other.

The connection point B of the resistors R1 and R2 constituting the drive circuit of the motor M1 is grounded through the transistor TR2, and the switch 51-1. Tiode D2. switch 52
-1. It is connected to the base of the transistor TR6 via a resistor R3 and a diode D3. This transistor T
R6U Resistor R9, which constitutes the drive circuit of the motor M2,
It is inserted between connection point A of Rlo and ground. The base of the transistor TR2 is the resistor RB and the switch 5l.
It is connected to the connection point A through the -21 switch 52-2, and the connection point between the resistors R8 and R16 is grounded through the transistor TR9. - The base of the transistor TR9 is connected to the base of the transistor TR1o inserted between the connection point of the resistor R3 and the diode D3 and the ground, and these transistors TR9, TR1
The base of ゜ is resistance.

is connected to switch S9 via. Connection point A above
A transistor T whose base is connected via a K resistor R7
R3 has its emitter connected to the voltage dividing point of the resistors R6 and R6, and its collector connected to the connection point between the diode D2 and the switch 52-1 via the diode D1. The transistor TR4, whose base is connected to the switch s9, is biased by a resistor R11, and its emitter is connected to the base of the transistor TR6 via a diode D4, and the power supply for the motor M2 is connected via a resistor R4. connected to the side. The base of the transistor TR6 complementary connected between the emitter and collector of the transistor TR4 is connected to the switch yf82-1.
and resistor R4, R inserted between the connection point of resistor R3 and the ground.
5, and a transistor TR7 is inserted between the voltage dividing point and ground. The bases of the two sets of transistors TR7 are connected to the voltage dividing point of the resistors R6 and R6 via the resistor R1.

In such a configuration, the switch s7 is now in the tape position and the switch S9 is in the interlocking position, and when the playback button of the second tape running mechanism 2 is operated, the switch S4 is turned on, so that a drive current is applied to the motor M2. The motor M2 rotates. That is, when the switch S4 is turned on, the power supply 1B is applied through the resistor R4 and the diode D4, but at this time, the transistor TR4 is connected to the resistor R11.
It is negatively biased and turned on, and the connection point C is pulled to zero potential. Therefore, transistor TR6
The base ID of is turned off because it is pulled in by the ground potential, and the l-transistor TR8 is turned on because a predetermined bias is applied to its base.

Therefore, the motor M2 rotates, and the second tape transport mechanism two playback buttons are locked and in the playback state.

Next, when the playback button of the first tape running mechanism 1 is operated, the switch S3. Although S5 is turned on, no drive current flows to the motor M1, and the motor M1 does not rotate. That is, when the switch S3 is turned on, the power source 1B is applied to the base of the transistor TR1, and at this time, the transistor TR
2, the potential of the collector of the transistor TR6 constituting the second tape running mechanism 2, that is, the connection point A is set to the base of the switch 52-2, 51-2', and the resistor R8,
It is turned on because it is applied via R16, and the potential at the connection point B can be adjusted to an appropriate level by the transistor TR2, approximately at ground potential. Therefore, the motor M1 does not rotate, and the first tape running mechanism 1 is in a playback standby state with the playback button locked. In this FJ student standby state, the second
When the second tape running mechanism 2 stops at the end, a stop mechanism (not shown) is activated, and the second tape running mechanism 2 is stopped when the playback button is returned. Then, since the switch S4 is turned off by stopping the second tape transport mechanism 2, the potential to the connection point reaches zero potential.

Then, since the base bias of the transistor TR2 constituting the first tape running mechanism 1 also becomes zero potential, the transistor TR2 is turned off, and the potential at the connection point B rises by 2, turning on the transistor TR1. Therefore, the first tape running mechanism 1 is released from the playback standby state and brought into the playback state. Well, when the first tape running mechanism 1, 1 is in the playback standby state, when the fast forward button or the rewind button of the first tape running mechanism 1 is operated, the switches 5l-181-2, 51-3 switch to the fixed terminals. 1 side, power +B is supplied to the inter-song detector 3 via the switch 55181-3, and the inter-song detector 3 is switched to the 1 side.
becomes operational.

Further, since the switch 51-2 is switched to the fixed terminal 1 side, the potential at the connection point A cannot be applied to the base of the transistor TR2, and the motor M1i rotates. In this way, the first tape running mechanism 1, which is in the playback standby state, enters the high speed playback state. In this high-speed playback state, when the inter-track detector 3 detects a silent part of the tape, the fast forward button or rewind button is unlocked and the system returns to the standby state for playback. . Note that the release operation of the fast-forward or rewind button from the high-speed playback state based on the detection signal from the inter-track detector 3 can be performed, for example, by driving the release mechanism of the fast-forward or rewind button with a plunger, or by driving the release mechanism of the fast-forward or rewind button with a plunger. All you have to do is start it with a plunger and drive it once using the rotational force of the motor.

On the other hand, when the switch S7 and the tape position switch S9 are in the interlocking position, when the playback button of the first tape transport mechanism 1 is operated, the switch S3 is turned on, which turns on the transistor TR1 and rotates the motor M1. Therefore, the playback button of the first tape running mechanism 1 is locked and the playback state is entered. Next, when the playback button of the second tape running mechanism 2 is operated, the switch S4 is turned on, but the motor M2 does not rotate. . That is, when switch S4 is turned on, the power supply is 10B.
is applied to the transistor TR8, but at this time, the first tape transport mechanism 1 is connected to the base of the transistor TR6.
The voltage at the connection point B of the switch 51-1. Diode D2
．． Since the voltage is applied across the switch 52-1, the resistor R3 and the diode D3, the transistor TR6 is on, and the potential to the connection point is drawn to an appropriate level by the transistor TR6, approximately at ground potential. Therefore, the above motor M
2 does not rotate, and the second tape running mechanism 2 shown in - is in a playback standby state with the playback button locked. When the first tape running mechanism 1 stops at the end in this playback standby state, a stop mechanism (not shown) is activated, so that the playback button of the first tape running mechanism 1 is returned to its original position and the first tape running mechanism 1 is stopped.

Then, since S3 is turned off to stop the first tape running mechanism 1, the potential at the connection point B is reduced to zero potential, and the transistor TR6 constituting the second tape running mechanism 2 is turned off, and the transistor TR6 is turned off. TR8 is turned on.

Therefore, the second tape running mechanism 2 is released from the playback standby state and brought into the playback state. Well, when the second tape running mechanism 2 is in the playback standby state, when the fast forward button or the rewind button of the second tape running mechanism 2 is operated, the switches 52-1 and 52-2 are switched to the fixed terminal 1 side. Therefore, the potential at connection point B is no longer applied to the base of transistor TR6, and motor M2
rotates.

Although not shown, power is applied to the song interval detector by operating a fast forward button or a rewind button of the second tape running mechanism 2, and a high speed playback state is established. In this high-speed playback state, when a silent portion of the tape is detected by the inter-track detector 3, the lock state of the fast forward button or rewind button is released and the playback standby state is resumed.

As described above, according to the present invention, when one tape running mechanism is in the student state, the other tape running mechanism can be put into the playback standby state, and the tape running mechanism in the playback standby state can be put into the high speed playback state. For,
This has the advantage that it is possible to cue the beginning of a desired song and wait, and that the continuous automatic performance of the two tape running mechanisms can be enjoyed even more.

[Brief explanation of drawings]

The drawing is a circuit diagram showing an embodiment of the tape recorder of the present invention. 1.2...Tape running mechanism, 3...
・・Song interval detector, TR1, TR2, TR6, TR8・・
...Transistor, SSS ...Switch, 51-1, 51-2゜31 51 4 $1-3182-1' S2-2 ...Suit, D2. D3...Diode.

Claims (1)

[Claims] 1st. A second tape running mechanism is provided, wherein when the first tape running mechanism is in a playback state, the second tape running mechanism is put into a playback standby state, and when the playback state of the first tape drive mechanism is stopped, the second tape run is started. The mechanism is configured to be able to release the playback standby state and perform continuous play, and the second tape running mechanism is placed in a high-speed playback state by operating the fast forward or rewind button.
1. A tape recorder characterized in that the tape recorder is configured to release the lock state of the fast forward button or the rewind button based on the detection of a song interval and return to a playback standby state.