JPH0110761Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention includes two independent tape drive mechanisms, a first and a second tape drive mechanism, and a signal reproduced from a first magnetic tape by the first tape drive mechanism is transmitted to the second tape drive mechanism. The present invention relates to a tape recorder with a copying function for recording onto a second magnetic tape.

Looking at conventional tape recorders like this, in the copy recording mode where the signal (song) on the first magnetic tape is copied onto the second magnetic tape,
When the copying of the desired song is completed, it is necessary to stop the tape recorder by operating one or both of the stop or pause buttons of both tape drive mechanisms.

The present invention was devised in view of the problems of conventional tape recorders, and when copying and recording of a predetermined song is finished, both the first and second tape recorders are automatically switched off. It is an object of the present invention to provide a tape recorder in which a tape drive mechanism can be placed in a pause mode and then simultaneously returned to a copying and recording mode.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is applicable to a tape recorder in which both the first and second tape drive mechanisms have recording and playback functions, or a tape recorder in which one tape drive mechanism has only a playback function and the other has both recording and playback functions. Although it can be applied to either system, in this example, for convenience of explanation, the first tape drive system will be described as having a playback function and the second tape drive system having a recording function. .

The attached drawing shows an electrical connection diagram of an embodiment of the tape recorder according to the present invention, and in the drawing, 1 and 2 indicate the first and second magnetic circuits in the first and second tape drive mechanisms. The signal of the first magnetic tape T1 picked up from the first magnetic head ₁ is amplified by the reproduction amplifier 3, and then
The signal is sent to the recording amplifier 4 on the second tape drive mechanism side via the changeover switch 5, and is then copied and recorded onto the second magnetic tape _T2 by the second magnetic head 2.

The changeover switch 5 is a switch that can selectively switch three terminals a, b, and c. Of the three terminals, terminal a is the radio signal receiving section 6, and terminal b is the above-mentioned one. Playback amplifier 3
Furthermore, the terminals c are respectively connected to microphone amplifiers 8 that amplify the signals from the microphone 7, and the signals of each source selected through these terminals a to c are supplied to the speaker 10 via the speaker amplifier 9. The signal is also supplied to the second magnetic head 2 via the recording amplifier 4.

Reference numeral 11 receives the playback signal from the playback amplifier 3 on the side of the first tape drive mechanism without going through the changeover switch 5, and outputs a song interval detection signal every time it detects a song gap in the playback signal. Song interval detection circuit,
12 is a counter that can preset the value to be counted by manual external operation and outputs a signal when the number of inter-song detection signals inputted from the inter-song detection circuit 11 reaches the preset value;
The preset value can be cleared by operating a clear switch 13.

Reference numeral 15 designates a solenoid drive circuit for a high-speed feed release device on the first drive mechanism side, and a high-speed feed lever (not shown) in the first drive mechanism.
The counter 12 is connected to the counter 12 through a high-speed switch 14 that is turned on and off by operation of a rewind lever or a rewind lever. When a further signal is applied, it acts to operate the solenoid plunger 16 to convert the first tape drive mechanism from a high speed feed mode to a constant speed feed mode (playback mode).

Reference numeral 17 denotes a circuit for controlling the drive motor 18 in the first tape drive mechanism, which consists of NPN transistors 19 and 20, a PNP transistor 21, and a resistor 22 connected as shown in the figure.In particular, the base of the transistor 19 is The drive motor 18 is connected to the output side of the counter 12, and is inserted between the collector of the transistor 21 and ground.

This control circuit 17 includes a transistor 19
If the main switch 23 is turned on while the main switch 23 is turned off without receiving a signal from the counter 12, the switch 2
The constant voltage of the +B power supply supplied through the transistor 3 is applied to the drive motor 18 through the transistor 21 to drive the drive motor 18.

24 is a circuit for controlling the drive motor 25 in the second tape drive mechanism, which includes an R-S flip-flop (hereinafter referred to as FF) 26 and a transistor 2
7, 28, resistor 29 and one-shot pulse generator 3
In particular, the drive motor 25 is inserted between the collector of the transistor 28 and the ground.

When the main switch 23 is turned on, the control circuit 24 sets the FF 26 in a set state with a single pulse from the single pulse generator 30, and drives the drive motor 25 by outputting a signal from the Q output terminal. Further, the one-shot pulse generator 31 outputs a one-shot pulse by obtaining a signal when the transistor 19 is turned on, and the FF 26 is brought into a reset state, thereby stopping the driving of the drive motor 25.

The FF 26 goes into the set state when the switch 33 is turned on, and the main switch 23 goes into the set state when either of the constant speed running operating means (for example, the playback button) in both tape drive mechanisms is in the operating position. It is configured to turn on.

32 is a selector switch 5 which is linked to the selector switch 5 and has three terminals a to c, and when terminals a and c excluding terminal b are selected, the voltage of the +B power supply is applied to the base terminal of the transistor 27 of the control circuit 24. This is turned on to drive the drive motor 25.

The present invention is constructed as described above,
The effect will be explained below.

A case will be described in which three songs on the first magnetic tape _T1 are copied and recorded onto the second magnetic tape _T2 .

First, when copying and recording, the changeover switches 5 and 32 are operated to select terminal b, respectively, and the preset value of the counter 12 is preset to "3".

Then, the first tape drive mechanism is set to the reproduction mode, the second tape drive mechanism is set to the recording mode, and the main switch 23 is turned on.

Then, in one control circuit 17, the signal (pause signal) is not outputted from the counter 12, and the transistor 19 is turned off.
The voltage of the B power supply is applied to the base terminal of the transistor 20 to turn on the transistor 20, thereby starting the drive motor 18.

At the same time, in the control circuit 24, the one-shot pulse generator 30 generates a one-shot pulse by applying voltage from the +B power supply when the main switch 23 is turned on, and this is applied to the set input terminal S of the FF 26.
By setting the FF 26 to the set state, a signal is applied from the output terminal Q of the FF 26 to the base terminal of the transistor 27 to turn on the transistor 27, and as a result, the drive motor 25 starts to be driven.

With the above, the tape recorder is in the copy recording mode based on the inter-track detection state, and the first magnetic head 1 picks up the first magnetic tape _T1 , which is running at a constant speed with the first tape drive mechanism. After the playback signal is amplified by the playback amplifier 3, it is applied to the recording amplifier 4 on the second tape drive mechanism side via the terminal b of the changeover switch 5, and is transferred from the second magnetic head 2 to the second magnetic tape _T2. Copied and recorded.

Further, a part of the reproduced signal is also supplied to the song interval detection circuit 11 without going through the changeover switch 5.
1 searches the playback signal for an interval between songs, and every time an interval is detected, it supplies an inter-music detection signal (pulse) to the counter 12 at the next stage.

The counter 12 counts the inter-track detection signal every time it is input, and compares the counted value with a preset value.

When the number of inter-song detection signals matches the preset value, that is, "3", the counter 12
outputs a signal (pause signal) to turn on the transistor 19 of the control circuit 17.

Then, in the control circuit 17, the transistors 20 and 21 are turned off, so the drive motor 18 stops driving and the first tape drive mechanism enters the pause mode.

At the same time, the one-shot pulse generator 31 generates a one-shot pulse as the transistor 19 turns on, and the FF 26 receives this at the reset terminal R and enters the reset state, erasing the signal from the output terminal Q. Therefore, both transistors 27 and 28 are turned off, and as a result, the drive motor 25 stops driving.
The second tape drive mechanism also enters pause mode.

Now that both tape drive mechanisms have changed from the copy recording mode to the pause mode, next, from this pause mode, some songs several songs ahead of the first magnetic tape _T1 are transferred to the second magnetic tape. The case of copying and recording to T ₂ will be explained.

In this case, first turn on the clear switch 13 in the pause mode to clear the preset value "3" of the counter 12, and at the same time clear the skipped song on the first magnetic tape _T1 (the song at the time the pause mode is entered). Songs not to be copied)
A new numerical value corresponding to the number of is preset, and at the same time, the high-speed forwarding (fast forwarding or rewinding) operating means of the first tape drive mechanism is operated.

Then, the counter 12, which has been preset with the new number of song intervals, turns off the signal (pause signal) that had been output until then, so the transistor 19 turns off.
In conjunction with this, the transistors 20 and 21 are turned on to drive the drive motor 18.

Therefore, since the drive motor 18 is driven in the first tape drive mechanism and the high-speed feed operation means is operated, the first magnetic tape T1 is run at high speed, and as a result, the first magnetic tape _T1 is moved at high speed. It becomes the song interval detection mode by feeding.

Also, at this time, for the second tape drive mechanism,
In order to maintain the reset state of FF26, the above pause mode is maintained.

Incidentally, in conjunction with the operation of the high-speed feed operation means of the first tape drive mechanism, the high-speed switch 14 is turned on, and is in a waiting state for release of the high-speed feed operation means.

In the above-described track interval detection mode of the first tape drive mechanism during high-speed feeding, the first magnetic head 1
Every time a song interval is detected on the magnetic tape _T1 , the song interval detection circuit 11 outputs a song interval detection signal and the counter 1
2 counts the number and compares it with a preset value. As a result of the comparison, the counter 12 does not output a signal unless the count value and the preset value match.

When the counter 12 counts the number of song interval detection signals equivalent to the preset value, it outputs a signal and applies the signal to the base terminal of the transistor 19 and the solenoid drive circuit 15.

Then, the control circuit 17 stops driving the drive motor 18 again, and the solenoid drive circuit 15 drives the solenoid plunger 16 so that the first
The high-speed feed operation means in the first tape drive mechanism is reset, high-speed feed is canceled, and the first tape drive mechanism is placed in the pause mode again.

As described above, the first magnetic tape _T1 has been run to the beginning of the next song to be copied and recorded.

In this situation, in order to copy and record the music on the first magnetic tape _T1 again onto the second magnetic tape _T2 ,
First, the clear switch 13 is turned on to clear the preset value of the counter 12 and to preset the number of songs to be newly copied and recorded.

Next, or simultaneously with the above preset, the switch 33 is turned on to bring the FF 26 into the set state.

Then, the counter 12 deactivates the signal output again, turns off the transistor 19, turns on the transistors 20 and 21, and drives the drive motor 18 again, and the FF 26 outputs the signal from the output terminal Q. Output and transistors 27, 28
is turned on to drive the drive motor 25 again.

With the above, both tape drive mechanisms have changed from the pause mode to the copy/record mode again, and the music on the first magnetic head _T1 is copied and recorded on the second magnetic head _T2 .

After that, the operation is similar to that of the copy recording mode described at the beginning, and once the desired number of songs have been copied and recorded, the pause mode is entered again.

It goes without saying that in either mode, both tape drive mechanisms can be returned to the stop mode by operating a stop operation means (not shown).

As described above, the present invention copies and records the music on the first magnetic tape played back by the first tape drive mechanism in the playback mode onto the second magnetic tape of the second tape drive mechanism in the record mode. In what you do,
an inter-song detection circuit that outputs an inter-song detection signal every time a song inter-song on the first magnetic tape is detected; Counter means is provided for outputting a pause signal when the count value obtained by counting matches the preset value, and the pause signal output from the counter means is used to control the first and second recording devices in the playback and recording modes. Since the present invention provides a tape recorder with a copying function that puts two tape drive mechanisms into pause mode, when the desired number of songs are copied and recorded, both tape drive mechanisms are immediately and automatically changed to pause mode. can be done, therefore,
There is no need to operate the stop lever each time as in the past.

[Brief explanation of the drawing]

The attached drawing shows an electrical wiring diagram of an embodiment of the tape recorder according to the present invention. 11: Song interval detection circuit, 12: Counter,
T ₁ : first magnetic tape, T ₂ : second magnetic tape.

Claims (1)

[Scope of utility model registration request] In a device for copying and recording a song on a first magnetic tape reproduced by a first tape drive mechanism in a playback mode onto a second magnetic tape of a second tape drive mechanism in a recording mode, the first An inter-track detection circuit outputs an inter-track detection signal every time a track interval is detected on a magnetic tape, the number of inter-track detection signals to be counted can be preset as a preset value, and the inter-track detection signal can be counted. Counter means is provided for outputting a pause signal when the obtained count value matches the preset value, and the pause signal output from the counter means is used to control the first and second tape drives in the playback and recording modes. A tape recorder with a copying function characterized by setting the mechanism to pause mode.