JPH0244344Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention allows, for example, on a tape on which multiple songs have been recorded, to jump forward or backward by a specified number of songs to find the beginning of the desired song, and then immediately start the playback operation. The present invention relates to a cueing device for displaying or waiting.

Generally, there are tape recorders that have two built-in tape recorder units, but in such tape recorders, the above-mentioned cueing device is usually provided in only one of the units. This is because installing a cueing device in both units increases the price, and if you try to switch and share one cueing device with both units, it will be difficult to cue when only one unit is in use. Immediately after that unit shifts to playback operation, and when the other unit is in use, it is difficult to control the unit that has finished cuing to standby without malfunctioning when cuing. It is.

The object of this invention is to provide a cueing device that can be used commonly by a plurality of tape recorder units to easily and reliably perform the above-mentioned control.

This invention will be explained below based on one embodiment shown in the drawings. This embodiment is equipped with two tape player units 1a and 1b as shown in the figure.
A common cueing circuit 3 is provided for these units 1a and 1b.

Units 1a and 1b are constructed in almost the same way, so corresponding components in units 1a and 1b are given the same numbers, and those in unit 1a are given an a at the end of the numbers, and those in unit 1b are given the same numbers. A suffix b is added to the end of each number, and the details of the unit will be explained only for unit 1a.

In the unit 1a, 5a is a normally open switch for reproduction, and in response to this being closed, the reproduction/recording operation of the unit 1a is started. Further, reference numeral 7a denotes a rapid-forward changeover switch, and in response to switching of its contact 9a from the break contact 11a side to the make contact 13 side, the rapid-forward operation of the unit 1a is started. The contact 9a of the fast-forward changeover switch 7a is connected to the +V terminal via the playback normally open switch 5a, and the fast-forward changeover switch 7a
The make contact 13a is connected to the transistor 2 via a resistor 15a, a diode 17a and a resistor 19a.
It is connected to the base of 1a. diode 17
A connection point 23a between resistor 19a and resistor 2
5a and a capacitor 27a are connected in parallel to the collector of the transistor 31a via a time constant circuit 29a. The emitter of the transistor 31a is grounded, and the base, which is a control terminal, is connected to the break contact 11b of the fast-forward changeover switch 7b of the unit 1b via a resistor 33a. Of course, the transistor 31 of unit 1b
The base of unit 1a is connected to unit 1a through resistor 33b.
break contact 11a of the fast-forward selector switch 7a
It is connected to the.

The collector of the transistor 21a is a resistor 35a
It is connected to the output side of the cueing circuit 3 via. The emitter of the transistor 21a is a resistor 37
a and is grounded via a diode 39a.
It is also connected to the base of transistor 41a via. The base of this transistor 41a is connected to an automatic stop device 45a via a diode 43a. The emitter of this transistor 41a is grounded, and a solenoid 47a is connected between the collector of this transistor 41a and +V. A release device 49a mechanically controls the reproduction normally open switch 5a and the fast-forward changeover switch 7a in accordance with the excitation time of the solenoid 47a.
That is, when the excitation time of the solenoid 47a is 100 msec, the release device 49a switches the contact 9a of the fast forward changeover switch 7a from the make contact 13 side to the break contact 11a side in the first half of 50 msec, and regenerates in the latter half of 50 msec. When the normally open switch 5a is opened and the on time of the solenoid 47a is 50 msec, the contact 9a of the fast forward changeover switch 7a is switched from the make contact 13 side to the break contact 11.
It is configured to switch to the a side.

The reproduction output obtained from the magnetic heads 51a, 52a of the unit 1a is amplified by an amplifier 53a and supplied to the cueing circuit 3 via a normally open switch 55a. The normally open switch 55a has its control terminal connected to the break contact 11a of the fast-forward changeover switch 7a, and is closed when the potential of this control terminal becomes a low level.

The cueing circuit 3 is a normally open switch 55a or 5
5b, detects and counts silent sections of the reproduction output supplied from unit 1a or 1b, and when the counted value matches the set number set by setting switch 57, generates a pulse signal for 100 msec. It is something.

The operation of the cueing device configured in this way will be explained. Now, as shown in the figure, the regeneration normally open switches 5a, 5b of both units 1a, 1b are opened, and the contacts 9a, 9 of the fast forward changeover switches 7a, 7b are opened.
It is assumed that b is switched to break contacts 11a and 11b, both units 1a and 1b are stopped, and normally open switches 55a and 55b are open.

In this state, the number of tracks to be cued is set in the cueing circuit 3 using the setting switch 57, the normally open switch 5a for playback is closed, and the contact 9a of the fast forward changeover switch 7a is connected to the make contact 13.
When switched to the a side, fast forwarding is performed with the tape in contact with the magnetic heads 51a and 52a, and an output is generated at the amplifier 53a. At this time, the break contact 11a of the fast-forward changeover switch 7a has a low potential, so the normally open switch 55a is closed and the amplifier 5
The output of 3a is supplied to the cue circuit 3, and a silent section is detected.

At the same time, the base potential of the transistor 21a is at a high level. At this time, since the normally open regeneration switch 5a of the unit 1b is open,
Break contact 11b of fast-forward changeover switch 7b
Since is at a low potential, the base of the transistor 31a of the unit 1a is at a low potential, and the time constant circuit 29
a is not charged.

When the number of silent sections matching the set number of the cueing circuit 3 is detected and a pulse signal is generated for 100 msec, and the collector of the transistor 21a is set to a high level, the base and collector of the transistor 21a are set to a high level. Transistor 21a becomes conductive. As a result, the emitter potential of transistor 21a becomes high level. That is, the transistor 21a functions as an AND gate, the base of the transistor 41a becomes high level, the transistor 41a becomes conductive, and the solenoid 47a is energized. When 50 milliseconds have elapsed after being energized, the release device 49a releases the contact 9a of the fast-forward changeover switch 7a.
is switched to the break contact 11a side, whereby the transistor 21a becomes non-conductive, the transistor 41a becomes non-conductive, the normally open reproducing switch 5a is not opened, and the fast-forward operation is shifted to the reproducing operation.

Next, while the unit 1a is in playback operation (the normally open switch 5a for playback is closed), the number of tracks to be cued is set in the cue circuit 3 using the setting switch 57, and the unit 1b is cued. In order to do this, it is assumed that the normally open regeneration switch 5b is closed and the contact 9b of the fast-forward changeover switch 7b is switched to the make contact 13b. At this time, since the base of the transistor 21b becomes high potential and the normally open switch 5a for regeneration of the unit 1a is closed, the base of the transistor 31b becomes high level, the transistor 31b becomes conductive, and the time constant circuit 29b is charged. When the cueing circuit 3 outputs a pulse for 100 msec, the contact 9b of the fast forward changeover switch 7b is switched to the break contact 11b side, in the same way as when the unit 1a is cued up when the unit 1b is stopped. Normally, the base of the transistor 21b would be at a low level, but since the time constant circuit 29b starts discharging, the base of the transistor 21b and 41b
The conduction state of is maintained. If the value of the time constant circuit 29b is appropriately selected, the release device 49b will open the normally open playback switch 5b when 50 msec has elapsed since the fast-forward changeover switch 7b was switched, and the unit 1b will be cued up. wait until it is completed. Then, the operation of the unit 1b is stopped by opening the normally open switch 5a for regeneration manually or by the automatic stop device 45b, and the normally open switch 5b for regeneration of the unit 1b is manually closed to stop the operation of the unit 1b.
make it work.

Note that there are cases where unit 1a is used to cue when both units 1a and 1b are stopped, and unit 1a
Although we have explained the case where unit 1b is used to cue up during playback, the same applies to cueing to unit 1b when both units 1a and 1b are stopped, or cueing to unit 1a while unit 1b is playing. Operate.

This type of cueing device uses time constant circuits 29a and 29b when the other unit is not in use.
The fast-forward changeover switch is changed so that the fast-forward state is canceled by not charging the unit, and the playback operation is performed immediately after the cue is found.When the other unit is used, the time constant circuits 29a and 29b
After charging the battery and switching the fast-forward changeover switch to release the fast-forward state, the time constant circuits 29a,
By discharging the switch 29b, the normally open switches 5a and 5b for reproduction are opened and the playback is put on standby with the beginning of the playback.

In the above embodiment, a configuration has been described in which the cue is searched in the fast-forward state, but it is also possible to use a configuration in which the cue is found in the rewind state. Further, the release devices 49a, 49b are mechanically operated by solenoids 47a, 47b to normally open regeneration switches 5a, 5b,
The fast-forward changeover switches 7a and 7b were controlled by electrically identifying the pulse width of the emitter output of the transistor 21a and controlling the fast-forward changeover switches 7a and 7b and the playback normally open switches 5a and 5b.
You may also use one that controls the Further, the normally open switches 55a and 55b are those that close when the control terminal is at a low potential, but if the normally open switches 55a and 55b are closed when the control terminal is at a high potential, the control terminals may be changed to fast-forward changeover switches. What is necessary is just to connect to the make side contacts 13a and 13b of 7a and 7b.

[Brief explanation of the drawing]

The figure is a circuit diagram of the cueing device according to this invention. 1a, 1b...tape player unit, 3...
...Cueing circuit, 5a, 5b... Playback switch,
7a, 7b... Fast-forward changeover switch (tape running switch), 21a, 21b... AND gate, 29a, 29b... Time constant circuit, 31a, 3
1b... Transistor (normally open switch for time constant circuit), 49a, 49b... Release device, 55a, 5
5b... Normally open switch for supplying reproduction output.

Claims (1)

[Claims for Utility Model Registration] At least two tape playback units, and one unit that generates a cue pulse signal for a predetermined period of time when a set number of unrecorded portions exist in the input playback output. In the tape playback device including a cue circuit, each of the tape playback sections has a control terminal interposed between the tape playback section and the cue circuit, and a signal supplied to the control terminal is connected to the tape playback device. a normally open switching element for supplying reproduction output, which is closed when the state changes from the first state to the second state, and supplies the reproduction output from the tape reproducing section to the cueing circuit; and a cueing pulse from the cueing circuit. An AND gate to which a signal is supplied to one input side, a reproduction on/off switch having one end connected to a power supply terminal, and a first contact and a second contact connected to the other input side of the AND gate. and a contact that contacts the first contact in the non-operating state, contacts the second contact in the operating state, and is connected to the other end of the playback on/off switch, and performs fast forwarding or rewinding operation in the operating state. a fast-forward or rewind switch for causing the corresponding tape playback section to operate, and a time constant circuit and a normally open switching element for the time constant provided between the other input side of the AND gate and a reference potential point in series. a circuit, and when an output is supplied from the AND gate for a first period of time, the contact of the fast forward or rewind switch is connected from the second contact to the first contact.
and a release device that switches the regeneration on/off switch to the non-operating state and opens the regeneration on/off switch when the output is continuously supplied for a second period following the first period; The control terminal of the normally open switching element for supply is connected to the first or second contact of the fast forward or rewind switch provided in the same tape reproducing section, and in the operating state, the normally open switching element for supplying the reproduction output is connected. A second state signal is supplied to the open switching element, and each of the normally open switching elements for the time constant circuit is configured to have a control terminal and close in response to the supply of the signal thereto; A tape formed by connecting the control terminal of each normally open switching element for each time constant circuit to the first contact of the fast forward or rewind switch provided in the tape playback section different from the one in which the control terminal is provided. Cue device for playback device.