JPH073442Y2 - Recording / playback device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a recording / reproducing apparatus having a reproduction-only deck and a recording / reproducing deck, and having an auto-fade-in recording mechanism and a synchro start mechanism. More specifically, the present invention relates to a recording / reproducing apparatus capable of activating automatic fade-in recording by operating one push button switch.

[Prior art and its problems]

In this type of conventional recording / reproducing apparatus, when performing automatic fade-in recording, two push button switches must be pressed at the same time, and depending on the timing of pressing, the beginning part of the reproduced sound may not be recorded. was there.

Further, in the case of fade-in recording of a source such as FM broadcasting from the line input terminal, there is a drawback that a recording opportunity is missed while operating two or more push button switches.

[Object of the Invention] The present invention has been conceived in view of the above, and an object of the present invention is to provide a recording / reproducing apparatus which solves the above-mentioned drawbacks.

[Outline of device]

In the tablable tape deck, a switch interlocking with the fade switch is used to selectively connect the fade-in instruction switch and the synchro start instruction switch, and when the fade switch is turned on, the synchro start instruction switch is turned on to substantially turn on the fade-in instruction switch. It is a recording / playback device that is brought into a state.

[Example of device]

 FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

As shown in the figure, the output of the reproduction amplification section 1 including the reproduction head 1a and the output of the reproduction amplification section 2 including the reproduction head 2a are configured to be selected by the electronic switch 5, and are selected by the electronic switch 5. The output of the reproduction amplification section 1 or 2 is provided with a reproduction system having a noise reduction system 6 dedicated to reproduction (decoding). The line input system has a line amplifier 7 including an input terminal, and the electronic switch 8 selects one of the output from the reproducing system and the output from the line amplifier 7.

The signal selected by the electronic switch 8 is supplied to the electronic switch 16 through the electronic potentiometer 9 or directly, and one of them is selected and amplified by the line amplifier 10 to be a line-out output.

On the other hand, the electronic switch 16 is switched by the fade switch S ₁ .

The output of the line amplifier 10 is supplied to a noise reduction system 11 dedicated to recording (encoding). The output of the noise reduction system 11 dedicated to recording is amplified by the recording amplifier 12 and supplied to the recording head 2a via the magnetic head changeover switches 3 and 4. 13
Is a recording bias oscillator circuit, and 17 is a transistor for turning it on and off. 14 is a control circuit section for controlling each mechanism and each electronic switch 3,4,5,8,17,18 and 19, which operates according to the logic determined by the input from each operation key switch. To do. Reference numeral 15 is a time constant circuit for generating a control voltage for controlling the charge / discharge circuit and the electronic volume 9 for determining the rising and falling curves of the sound at the time of fade-in and fade-out. In addition, the output of high and low potential from the control circuit unit 14, the changeover switch 3,4
To control.

Since the electronic switch 16 is controlled by the fade switch S ₁ , the time constant circuit 15 produces an output for controlling the electronic volume 9.

Here, the fader operation is performed only when the fade switch S ₁ is turned on. On the other hand, the switch S ₂ for instructing the synchro start is a key switch for simultaneously setting the playback deck to the playback state and the recording / playback deck for the recording state, and the switch S ₃ for instructing the fade-in is the time constant from the control circuit section 14. It is a key switch for changing the output to the circuit 15 from a low potential to a high potential. Also a switch to instruct fade-out
S ₄ is a key switch for changing the output from the control circuit 14 to the time constant circuit 15 from a high potential to a low potential.

Further, in one embodiment of the present invention, the switch S ₂ and the switch
The terminal of the control circuit unit 14 connected to S ₃ is configured to be short-circuited by the switch S ₁ b via the diode D ₁ . The switch S ₁ b operates in conjunction with the fade switch S ₁ .

First, in one embodiment of the present invention configured as described above,
The case without the switch S ₁ b and the diode D ₁ will be described.

In order to perform the auto fade-in and fade-out operations, first set the fade switch S ₁ to the on position. As a result, the electronic switch 16 selects the output of the electronic volume 9 and switches to the output state. When the switch S ₃ is turned on in this state, the input from the control circuit unit 14 supplied to the time constant circuit 15 changes from low potential to high potential. Therefore, the capacitor C ₁ of the time constant circuit 15 is charged according to the time constant. As a result, the control voltage of the electronic volume 9 is finally increased from the (−) voltage to the “0” voltage by the time curve of the time constant, and the fade-in operation is performed. The fade-out operation is the reverse of the above.

Next, the synchro start will be described. When the switch S ₂ is turned on, the playback deck is controlled to the playback state, and the recording / playback deck is controlled to the recording state at the same time. At the same time, the electronic switch 5 is controlled to select the output of the regenerative amplifier 1 and the electronic switch 8 is controlled to select the output of the noise reduction system section 6. Further, the transistor 19 is controlled to the off state, the switch 3 is controlled to the off state, the transistor 4 is controlled to the on state, and the transistor 17 is controlled to the on state. As a result,
The output of the reproducing / amplifying unit 1 is supplied to a line amplifier 10 directly or via an electronic volume 9. The output of the line amplifier 10 is a noise reduction system 11, a recording amplifier, a recording / reproducing head.
The recording current is supplied to the recording head 2a by being supplied to the recording head 2a. In this case, the transistor 17 is turned on, and the bias current flows in the recording head 2a. That is, when the switch S ₂ is turned on, the playback deck is in the playback state,
The recording / playback deck is in the recording state, and the output from the playback deck is recorded by the recording / playback deck.

When recording the reproduced sound of the magnetic tape while fading in, it is necessary to press the switch S ₂ and the switch S ₃ at the same time to turn them on. As described above, if the timing is deviated, the beginning portion of the reproduced sound may not be recorded.

Therefore, in one embodiment of the present invention, the switches S ₂ and S ₃ are connected via the diode D ₁ and the switch S ₁ b. Here, the diode D ₁ is connected in order to avoid a malfunction when the switch S ₃ is pressed.

By providing the switch S ₁ b as described above, in the case of so-called auto fade-in recording in which the fade switch S ₁ records at the ON state position, so-called auto-fade-in recording, the switch S ₂ is turned on to turn the switch S ₃ on. It is equivalent to being done at the same time. Therefore, the reproduction deck enters the reproduction state and starts reproduction. At the same time, the recording / reproducing deck starts recording, the input of the time constant circuit 15 is switched from low potential to high potential, and fade-in is performed.

Also, when starting fade-in recording with a source from line input, such as FM broadcasting, the playback deck is in a stopped state,
When the switch S ₂ is turned on under the condition that the recording / playback deck is in the recording standby state and the fade switch S ₁ is on, the recording / playback deck is in the recording state (the playback deck is in the stopped state). The fade-in can be started at the same time.

Similarly, a switch for stopping the two decks at the same time, that is, a thin cross top key switch is provided, and by turning on the switch, both decks can be stopped after fading out. In this case, of course, it is necessary to stop the deck after the fade-out operation is completed after turning on the thin cross top key switch.

In the above, the case where the crossfade recording is started by using the reproduced sound from the reproduction deck as the source is explained. However, a means such as adding a mode switch or providing another start key switch is added to the electronic switch 8. In the case where the line amplifier 7 side is selected to perform fade-in recording of FM broadcast or the like, it is not possible to redo the recording. Therefore, starting the fade-in recording with one touch greatly improves usability.

[Effect of device]

As described above, according to the present invention, since the two functions are simultaneously started with one touch, the fade-in recording can be surely started.

It can also be faded out.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. S ...... fade switch, S ₂ ...... synchro start switch, S ₃ ...... fade-in switch, S ₄ ...... fade-out switch, S ₁ b ...... interlock switch.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A recording / reproducing apparatus comprising a reproduction-only tape deck and a recording / reproducing tape deck, capable of fading in / fade-out, and capable of synchronized start to operate both tape decks in synchronization. The fade-in instruction switch and the synchro start instruction switch are selectively connected by a switch that interlocks with the switch, and when the fade switch is turned on, the fade-in instruction switch is turned on substantially by turning on the synchro start instruction switch. A recording / playback device characterized in that