JPS5923034B2 - Tape streaming device in magnetic recording and reproducing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape streaming device in a magnetic recording/reproducing device, and the present invention relates to a tape streaming device in a magnetic recording/reproducing device, in which an editing switch is set as a first switch for making tape streaming.
By comprising a switch and a second switch for turning off the mode setting circuit linked to this switch,
To provide a device which can immediately stop a play mode, a fast forward mode or a rewind mode when an editing switch is operated by mistake during these modes, and can prevent the tape from flowing unnecessarily.

Conventionally, when editing a tape, the supply reel is driven and the take-up reel is stopped, the pinch roller is pressed against the capstan to run the tape, and the running tape is not wound onto the take-up reel. There is a tape recorder that has a so-called tape streaming mechanism that sequentially takes out the tape to the outside of the device.

However, in conventional tape recorders having such a tape streaming mechanism, a switch (editing switch) for setting the tape streaming mode is provided without any relation to the mode setting circuit for play mode, fast forward mode, etc. If you accidentally operate the edit switch while in Play mode or Fast Forward mode, only the take-up reel will stop and the tape will flow unnecessarily. The disadvantages include that the operation is troublesome, such as having to put the tape in stop mode and then put the tape back on its original length between the reels.

The present invention eliminates the above-mentioned drawbacks, and embodiments thereof will be described below with reference to the drawings.

FIG. 1 shows a circuit diagram of a first embodiment of a tape feeder in a magnetic recording/reproducing apparatus according to the present invention. In the same figure, 51
is a general opening/closing switch, which is connected to a transistor Tr4 that drives and stops the take-up reel motor 1, and is also connected to a transistor Tr2 that grounds the signal from the reproducing head 2. This switch 51 is a switch that is also provided in conventional devices.
Reference numeral 52 denotes a switching type switch that operates in conjunction with switch 51, terminal b is connected to power supply +B, and terminal a is connected to flip-flop 3 for play mode, flip-flop 4 for fast-forward mode, and flip-flop 5 for rewind mode. are connected to the reset terminals of each.

An editing switch is constituted by the switches 51 and 52 which are linked together, and constitutes a main part of the present invention. In the figure, when performing tape streaming, switches 51 and 52 are connected to terminal a, and play button 6 is closed.

By closing the switch S1, the voltage of the power supply +B is applied to the transistors Tr, Tr2, turning them on, respectively. By turning on the transistor Tr2, the reproduced signal is grounded and is not taken out from the output terminal 10. Also, Switch S
When 2 is connected from terminal b to terminal a, the movable contact piece is temporarily connected to both terminals b and a, so the voltage from power supply +B is applied to the set terminals of flip-flops 3 to 5, and this As a result, flip-flops 3 to 5 become set. On the other hand, when the break button 6 is closed, the voltage of the power supply +B is applied to the set terminal of the play mode flip-flop 3, thereby setting it in the set state. By setting the flip-flop 3, the supply side motor 7
A buck tension voltage is applied to the pinch roller solenoid 8 and a supply side reel motor brake solenoid 9, and the pinch roller (not shown) is pressed against the capstan (not shown). The brake on the supply reel (not shown) is released. In this case, by turning on the transistor Trl, the take-up side reel motor 1
No voltage is applied to the motor 1, and the motor 1 is in a stopped state. As a result, the tape (not shown) fed out from the supply reel by the pitch roller and capstan is not wound onto the take-up reel (not shown), but instead flows outside the apparatus. Next, for example, when entering play mode, switch S
1 and S2 are connected to terminal b, and the brake button 6 is closed.

By opening switch S1, transistors Tr, Tr2
is turned off, the take-up reel motor 1 is driven, the tape is normally wound onto the take-up reel, and the reproduction signal from the reproduction head 2 is taken out from the output terminal 10. In addition, if you want to fast forward or rewind, press button 11 respectively.
.
Activate 4. Here, a case will be explained in which, for example, the editing switches Sl and S2 are connected to the terminal a by mistake during the play mode.

As mentioned above, when switch S2 is connected from terminal b to terminal a, the movable contact piece is temporarily connected to both terminals b and a, so the voltage of power supply +B is applied to flip-flops 3 to 5.
The voltage is applied to the reset terminal, thereby placing flip-flops 3-5 in the reset state. flipflop 3
With the glue set, no voltage is applied to the supply reel motor 7, the take-up reel motor 1, the pinch roller solenoid 8, and the supply reel motor brake solenoid 9. As a result, the motors 7 and 1 are stopped, the pinch roller is separated from the capstan, and the tape is no longer run and stopped at that location. When entering the play mode again, the switches Sl and S2 are connected to the terminal b and the button 6 is closed. As described above, according to the device of the present invention, if the editing switch is operated by mistake during the play mode, the mode is automatically stopped and the tape is stopped at that location. The tape is not leaked outside the device, and when returning to its original state, it can be immediately returned to play mode without having to go into stop mode as in the past. FIG. 2 shows a circuit diagram of a second embodiment of the device according to the invention. In the figure, the same components as in FIG. 1 are given the same reference numerals. In the figure, switch S1 is a transistor Tr.
, and is also connected to the pause mode solenoid 15. The other configurations are the same as in FIG. 1. In the second embodiment shown in FIG.
2 is connected to terminal a, the pinch roller is placed in the pause position.

Therefore, when the play mode is set, the pinch roller is immediately pressed against the capstan, making it easier to operate than in the first embodiment. The other operations are the same as those of the first embodiment, so the explanation thereof will be omitted. In the above embodiment, only the case where the editing switch was operated by mistake during the play mode was explained, but the same operation can be used to stop the tape when the editing switch is operated by mistake during the fast forward mode or the rewind mode. .

As described above, the tape drooping device in the magnetic recording and reproducing apparatus of the present invention is interlocked with the first switch that puts at least the take-up reel motor into a non-driving state, and operates in the constant speed tape feed mode and the high speed remote feed mode. Since a second switch is provided for supplying a control signal to each mode setting circuit to stop these modes in conjunction with the operation of the first switch during operation, play mode, fast forward mode or rewind mode can be selected. If you accidentally operate the switch for vertical flow during operation, the operation will cause the stop mode to occur, and both the supply reel and take-up reel will be stopped, so the tape will stop running at that location. As a result, unlike conventional devices, the tape will not be unnecessarily dropped, and unlike conventional devices, the tape will automatically enter stop mode without being put into stop mode, and immediately return to play mode or other modes. It has the advantage of being able to be set to tape running mode, making it easier to operate, and protecting the tape more reliably than conventional examples.

[Brief explanation of the drawing]

FIGS. 1 and 2 are circuit diagrams of first and second embodiments of a tape streaming device in a magnetic recording/reproducing apparatus according to the present invention, respectively. 1... Winding side reel motor, 3... Flip-flop for play mode, 4... Flip-flop for fast forwarding, 5... Flip-flop for rewinding, 6... ...Play button, 7...
- Supply side reel motor, 8...Pinch roller solenoid, 9...Supply side reel motor brake solenoid, 11...Fast forward button, 12
... Rewind button, 13 ... Fast forward control circuit, 14 ... Rewind control circuit, 15 ...
... Solenoid for pause mode, S,, S2...
...Edit switch, Trl...transistor.

Claims (1)

[Claims] 1. A first switch that disables at least the take-up reel motor of the supply reel motor and the take-up reel motor, thereby causing the magnetic tape to flow outside the device without being wound onto the take-up reel. In the tape feeder of the magnetic recording and reproducing apparatus provided, the tape feeder is linked to the first switch and operates in the tape constant speed feed mode and high speed feed mode. 1. A tape streaming device for a magnetic recording/reproducing device, comprising a second switch for supplying a control signal for stopping a mode to each mode setting circuit.