JPH0621054Y2 - Magnetic recording / reproducing device - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a magnetic recording / reproducing apparatus, and more specifically to a double cassette tape recorder.

[Prior art]

As shown in FIG. 5, the conventional double cassette tape recorder having two decks includes a first tape deck 1 and a second tape deck.
The tape deck 2 and the mechanism control include a mechanism control key switch 5 for one system. Further, a changeover switch 3 for switching between the first tape deck 1 and the second tape deck 2 so that the first tape deck 1 and the second tape deck 2 can be controlled by the mechanism control key switch 5, Further, a copy switch 4 for instructing dubbing is provided.

In the conventional double cassette tape recorder shown in FIG. 5, the changeover switch 3 selects the first tape deck 1 and the mechanism control key switch 5 controls the first tape deck 1. Similarly, when the second tape deck 2 is selected, the changeover switch 3 is used to select the second tape deck 2 and the mechanism control key switch 5 is used to control the second tape deck 2. By this, the first and second tape decks 1 and 2
There are things that operate completely independently. Also, the first
When the tape deck 1 of No. 2 is operating, the second tape deck 2 is stopped, or the reverse operation is performed. When dubbing is further performed, the copy switch 4 is pressed to bring the first tape deck 1 into the reproduction state and the second tape deck 2 into the recording state, so that the reproduction signal from the first tape deck 1 becomes the first state. It is transmitted to the tape deck 2 of 2 and recorded. Moreover, in this case, the output of the mechanism control key switch 5 is not received, or only the output of the stop push button key switch is received.

However, the conventional double-cassette tape recorder as described above has a drawback that it is difficult to control when both decks are operating at the same time, such as when dubbing, because it has only one mechanism control key switch. Therefore, there is a problem in that the function of the mechanism control key switch must be restricted to some extent during dubbing.

[Purpose of device]

The present invention has been made in view of the above, and an object thereof is to provide a magnetic recording / reproducing apparatus which solves the above problems, improves operability during dubbing, and facilitates magnetic tape editing.

[Example of device]

FIG. 1 is an external view showing an example of an arrangement of operation switches in an embodiment of the present invention, and switches having the same mechanism as the conventional example shown in FIG. 5 are designated by the same reference numerals. FIG. 2 shows a circuit diagram in an embodiment of the present invention.

In FIG. 2, the output of the mechanism control key switch 5 is separately supplied to the OR gates 6 _{1 to} 6 ₇ and 7 _{1 to} 7 ₇ . The OR gates 6 _{1 to} 6 ₄ are supplied with the signal A of the truth table of Table ₁ , the OR gates 7 _{1 to} 7 ₄ are supplied with the signal B of the truth table of Table 1, and the OR gates 6 _{5 to} 6 ₇ Is supplied with the signal C of the truth table of Table 1, and the OR gate 7
A _{5-7 7} is supplied with a signal D of the truth table of Table 1. The output of the OR gate 6 _{5-6 7} Yes supplied as mechanism control signal to the first tape deck 1, the OR gate 7 ₁
The output of the _7-7 are supplied as mechanism control signal to the second tape deck 2.

Incidentally, _{5 1} rewinding instruction switch _{5 2} stop instruction switch _{5 3} reproduction instruction switch _{5 4} fast-forward instruction switch _{5 5} sound recording instruction switch _{5 6} Recording mute instruction switch _{5 7} Pouzu It is an instruction switch.

When controlling the first tape deck 1, the first tape deck side of the changeover switch 3 is selectively pressed. By this selection, the signals A and C are controlled to the low potential, and the signals B and D are controlled to the high potential. The output of the mechanism control keyswitch 5 is a low potential output, the OR gate ₆₁ through ₇ acts as an AND gate, the gate of the OR gate ₆₁ through ₇ are opened, the output of the pressed mechanism control keyswitch 5 Is the first
Is supplied to the tape deck 1. Therefore, in this case, the first tape deck 1 is controlled.

When the second tape deck 2 is controlled, the second tape deck 2 side of the changeover switch 3 is selectively pressed. By this selection, the signals A and C are controlled to the high potential and the signals B and D are controlled to the low potential. The output of the mechanism control keyswitch 5 is a low potential output, the OR gate 7 _{1-7 7} acts as an AND gate, the gate of the OR gate 7 _{1-7 7} is opened, the output of the pressed mechanism control keyswitch 5 Is supplied to the second tape deck 2. Therefore, in this case, the second tape deck 2 is controlled.

Further, when the copy switch 4 is pressed, the signals A and D are controlled to low potential, and the signals B and C are controlled to high potential. The output of the mechanism control key switch 5 is a low-potential output, which functions as an AND gate for the OR gates 6 _{1 to} 6 ₄ , 7 _{5 to} 7 ₇ , and the OR gates 6 _{1 to} 6 ₄ , 7 _{5 to} 7 ₇
Is opened, the outputs of the indicating switches 5 _{1 to} 5 ₄ are supplied to the first tape deck 1, the outputs of the indicating switches 5 _{5 to} 5 ₇ are supplied to the second tape deck 2, and the first tape deck 1 It is possible to control rewind, stop, play and fast forward on the side, and record, mute and pause recording on the second tape deck 2 side, and fast forward, rewind, mute and pause recording during copying are possible.

FIG. 3 is a block diagram showing another embodiment of the present invention.

Another embodiment of the present invention shown in FIG. 3 is an example in which it is formed by a microcomputer, and a mechanism control key switch 5
Is supplied to the microcomputer 13, the output of the mechanism control key switch 5 is read, and the selection switch 3 for selecting the first and second tape decks 1 and 2 is read.
And the output of the copy switch 4 are read, and the supply output to the first tape deck 1 and the second tape deck 2 is controlled in accordance with the output of the selection switch 3 and the output of the copy switch 4. is there.

Next, the operation of another embodiment of the present invention will be described according to the program stored in the ROM in the microcomputer 13.

Like the front chart shown in FIG. 4, the instruction switches 5 ₁ to
5 ₄ reads the output of the (step a), then reads the output of the copy switch 4, the output of the copy switch 4 or the high potential, whether the low potential is checked (step b). When the copy switch 4 is not a copy instruction in step b, namely instruction switch 5 ₅ Following Step b when the output of the copy switch 4 is high potential
5 ₇ reads the output of the (step c), then the output of the copy switch 4 reads the output of the copy switch 4 whether or not the high potential or low potential is checked (step d). When the copy switch 4 does not give a copy instruction in step d, that is, when the output of the copy switch 4 is high potential, it is checked whether the output of the selection switch 3 is high potential or low potential following step d. (Step e). When the output of the selection switch 3 is at high potential in step e, the mechanism of the first tape deck 1 is operated by the mechanism control key switch 5 after the step e and the first tape deck 1 is selected. (Step f). In step e, when the output of the selection switch 3 is at a low potential, the second tape deck 2 is selected,
Subsequent to step e, the mechanism of the second tape deck 2 is operated by the mechanism control key switch 5 (step g).

When the output of the copy switch 4 is at a low potential in steps b and d, that is, when a copy instruction is issued, step b is followed by step f, and step d is followed by step g. As a result, the first tape deck 1 can be fast-forwarded and rewound, and the second tape deck 2 can be recording mute and paused.

In the example described above, the mechanism control key switch 5 is distributed so that the recording side deck, that is, the second tape deck can be recorded, muted and recorded.
If at least recording muting is possible, editing will be easier than before. In addition, there is a recording mute mechanism that advances the tape for a fixed time and then stops, but this may be done. Furthermore, in the case of copying, the stop switch in the mechanism control key switch 5 may be assigned to the second tape deck 2 side.

Further, although the above embodiment has been described with respect to the case of recording the audio signal, the present invention can be applied to the case of recording the video signal like the VTR.

[Effect of device]

As described above, according to the present invention, when the copy operation is performed by the copy switch, the mechanism control key switch of one system can control only the first recording / reproducing mechanism and the second recording / reproducing mechanism. By allocating only the mechanism to the switch that can be controlled, for example,
If another source is to be copied during the copy operation, various operations can be performed during the copy operation such that the cassette can be exchanged only in the first recording / reproducing mechanism and the copy operation can be continued. It has an effect.

[Brief description of drawings]

FIG. 1 is an external view showing an example of the arrangement of operation switches in one embodiment of the present invention, FIG. 2 is a circuit diagram in one embodiment of the present invention, and FIG. 3 is a block showing another embodiment of the present invention. FIGS. 4 and 5 are flow charts for explaining the operation of another embodiment of the present invention, and FIG. 5 is an external view showing an example of the arrangement of the operation switches of the conventional example. 1 ... 1st tape deck, 2 ... 2nd tape deck, 3
... selection switch, 4 ... copy switch, 5 ... mechanism control key switch, 6 _{1 to} 6 ₇ , 7 _{1 to} 7 ₇ ... OR gate.

Claims (1)

[Scope of utility model registration request] 1. A first recording / reproducing mechanism having at least a reproducing function, a second recording / reproducing mechanism having at least a recording function, and a mechanism control key switch of one system. One of the recording / reproducing mechanism and the second recording / reproducing mechanism can be selected and controlled, and
A magnetic recording / reproducing apparatus capable of a copy operation, wherein a reproduction signal reproduced by a first recording / reproducing mechanism by a copy switch is recorded by a second recording / reproducing mechanism, wherein the mechanism control is performed during the copying operation by the copy switch. A magnetic recording / reproducing apparatus comprising switch allocating means for allocating a key switch to a switch capable of controlling only the first recording / reproducing mechanism and a switch capable of controlling only the second recording / reproducing function. .