JPH0351032B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a video disc player, and more particularly to a video disc player with a coin counter that includes a controller having a coin counting function.

(Prior art) With the recent spread of video disc players,
There is also a trend in coffee shops and the like to install business-use music boxes equipped with video disk players that allow users to enjoy music and the like by inserting coins.

This kind of commercial box is
A video disc player (hereinafter simply referred to as a player) equipped with a start key for instructing to start an operation and a stop key for instructing to stop an operation, and a controller having a coin counting function are connected via a connecting cable. It's summery. and,
The controller transmits an operation prohibition signal that instructs the player to prohibit an operation when no coin is inserted, and transmits an prohibition signal that instructs the player to cancel the prohibition of the operation when a coin is inserted. The device is configured to transmit a signal. When the player receives an operation prohibition signal from the controller, the player does not perform the corresponding operation even if the player operates the start key or stop key provided on the player itself. By receiving these signals, the player can perform operations corresponding to the operations of the start key, stop key, etc. provided on the player itself.

(Problem to be Solved by the Invention) The video disk player with a coin counter (Music Box) configured as described above stops its operation during a power outage or when the player is turned off, but the controller and player are connected. The connection cable connected to the controller is disconnected, or the controller is turned off while the player is still on.
In this case, the controller will no longer send an operation prohibition signal to the player. In other words, from the player's perspective, the situation is the same as when a prohibition release signal is sent from the controller, so the player can independently operate the start key on the player itself regardless of whether or not he or she has inserted a coin. There was a problem when it became operational. This has caused problems such as the player being able to be used for free, and the number of coins inserted and the number of plays by the player not matching.

The present invention was made in view of this problem, and when the connection cable connecting the controller and the player is disconnected or the controller's power is turned off, the player itself also stops. It is an object of the present invention to provide a video disk player with a coin counter that eliminates troubles such as free use by configuring the coin counter to be maintained.

(Means for Solving the Problems) In order to solve the above problems, a video disk player with a coin counter according to the present invention is a video disk player equipped with a start key for instructing to start an operation and a stop key for instructing to stop an operation. and a controller having a coin counting function are connected via a connection cable, and the controller sends an operation prohibition signal that instructs the video disc player to prohibit operation when a coin is not inserted, and when a coin is inserted. The coin counter is configured to send a signal instructing the video disc player to release the prohibition when the video disc player is prohibited, and the video disc player is configured to perform its operation based on the signals. In the disc player, a switching element that is turned off only when a voltage is applied to a control input is connected in parallel with the stop key of the player, and the power supply voltage of the controller is connected to the control input of the switching element. The configuration is such that the voltage is applied via a cable.

(Effect) Only when voltage is applied to the control input
A switching element that is turned off is connected in parallel with the stop key of the player, and the power supply voltage of the controller is applied to the control input of this switching element via a connecting cable. Since the switching element maintains an OFF state when the power supply voltage of the controller is applied, the player operates in accordance with the signals (operation prohibition signal and prohibition release signal) from the controller in this state. Then, when the power to the controller is turned off or the connecting cable is disconnected (i.e., when the supply of power supply voltage of the controller to the control input of the switching element is cut off),
Since the switching element is in the ON state, the state is equivalent to turning on the stop key provided on the player. Therefore, after that, the operation of the player is stopped, and even if the start key of the player itself is pressed, the ON state of the switching element has priority, so that the player maintains the stopped state.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic block diagram of a video disc player with a coin counter according to the present invention.

In the player 1, a video signal read by a pickup circuit 3 from a video disk (not shown) placed on a turntable 2 is input to a preamplifier section 4, where it is amplified and sent to a tracking servo. unit 5, time base servo unit 6, and FM demodulation circuit 7, respectively.

The tracking servo section 5 separates a tracking signal necessary for tracking control from the video signal input from the preamplifier section 4,
Based on this signal, deviation of the stylus (not shown) from the track center is detected and the pickup circuit 3 is controlled so that the stylus traces the center of the track.

The time base servo section 6 separates a signal necessary for jitter correction from the video signal input from the preamplifier section 4, and controls the pickup circuit 3 based on this signal.

The FM demodulation circuit 7 performs FM demodulation on the video signal input from the preamplifier section 4 and separates it into an audio signal component and a video signal component. The audio signal component is output to the audio signal processing circuit 8, and the video signal component is output to the video signal processing circuit 9.

The audio signal processing circuit 8 demodulates the audio signal input from the FM demodulation circuit 7 and outputs it to audio terminals 10 and 11 as a two-channel audio signal.

The video signal processing circuit 9 converts the video signal input from the FM demodulation circuit 7 into a standard color television signal and outputs it to the video terminal 12.

The rotation of the turntable 2 is controlled by a motor servo unit 13, and this motor servo unit 13 is further equipped with a player microcomputer (hereinafter simply referred to as a player microcomputer).
It is controlled by 14.

The player microcomputer 14 is connected to the motor servo unit 1
In addition to controlling the operation of the pickup circuit 3, the pickup circuit 3 and the preamplifier section 4 are also controlled.

The operation input unit 15 for inputting various operation signals to the player microcomputer 14 includes a stop key 24 (see FIG. 2) for stopping the operation of the start key for starting the operation of the player 1 itself. ing. The player microcomputer 14 rotates the turntable 2 at a predetermined speed via the motor servo section 13 based on an operation start signal sent from the operation input section 15 when the start key is pressed, and also rotates the turntable 2 at a predetermined speed. 3 and the preamplifier section 4 to put the player 1 into a playback state. Also,
When the stop key 24 is pressed in this playback state, based on the operation stop signal from the operation input section 15,
The rotation of the turntable 2 is stopped, and the drive of the pickup circuit 3 and preamplifier section 4 is also stopped, thereby bringing the player 1 into a stopped state. Further, reference numeral 16 is a power supply circuit that supplies power to each of the above-mentioned circuits and the like.

The player microcomputer 14 of the player 1 having the above-described configuration is connected to the controller microcomputer of the controller 17 (hereinafter simply referred to as the controller microcomputer) via a connection cable 18, and data is exchanged between these two microcomputers 14 and 19. An exchange is taking place.

Controller microcomputer 19 of controller 17
Unless it receives a signal from the coin counter 20 indicating that a coin has been inserted, it continues to output an operation prohibition signal instructing the player microcomputer 14 to prohibit its operation. As a result, the player 1 is in a state in which it does not operate even if the operation key (for example, the start key) of the operation input section 15 on the player 1 side is operated. In other words, player microcomputer 1
4 is kept in a state in which it does not accept signals from the operation input section 15 by an operation prohibition signal from the controller 17. Note that the reference numeral 21 in the figure is an operation input unit provided with various keys, and the reference numeral 22 is a power supply circuit that supplies power to each part of the controller 17.

FIG. 2 shows the electrical connections of a switching element (electronic switch) according to the present invention.

That is, the player microcomputer 14 of the player 1
An electronic switch 23 is provided in parallel with a stop key 24 that stops the operation of the electronic switch 23, and the control input of this electronic switch 23 is usually a voltage divided by the power supply voltage (+B) of the controller 17 between resistors _R1 and _R2 . Voltage (V ₀ )
is applied via the connection cable 18. This voltage is a control voltage that controls the opening and closing of the electronic switch 23. When this voltage (V ₀ ) is applied (that is, when the control input is at the "H" level), the electronic switch 23 is turned OFF, and the voltage
When a constant voltage (for example, 0V) lower than V ₀ is reached (i.e., when the control input is at "L" level)
It is set to be ON.

Next, the operation of the video disk player with a coin counter having the above configuration will be explained.

Controller microcomputer 19 of controller 17
continues to output an operation prohibition signal (for example, an "H" level signal) instructing the player microcomputer 14 to prohibit operation unless it receives a signal from the coin counter 20 indicating that a coin has been inserted. . As a result, the player microcomputer 14 is kept in a state in which it does not accept signals from the operation input section 15 due to the operation prohibition signal from the controller 17.

In this state, when a coin is inserted into the controller 17, the coin counter 20 detects this and outputs an insertion detection signal to the controller microcomputer 19 indicating that a coin has been inserted. Upon receiving this signal, the controller microcomputer 19 sends the operation prohibition signal (“H”) to the player microcomputer 14.
level signal). This means that
This means that the prohibition release signal (a signal at "L" level) has been output to the player microcomputer 14. The player microcomputer 14 that received this prohibition release signal,
This is because the player is in a state where it can accept signals from the operation input section 15 (that is, a state as a normal player in which it is possible to control the corresponding actions by operating various keys on the operation input section 15). When the start key of the operation input unit 15 is pressed in this state, the player microcomputer 14 rotates the turntable 2 at a predetermined speed via the motor servo unit 13, and also rotates the pickup circuit 3 and preamplifier unit 4. The pickup circuit 3 is controlled so that the stylus traces the center of the track based on the tracking signal from the tracking servo section 5, and the player 1 is placed in a playback state. The video signal reproduced from the video disc is appropriately amplified in the preamplifier section 4 driven by the player microcomputer 14, demodulated by the FM demodulation circuit 7 as described above, and then the audio signal processing circuit 8 and The signals are applied to the video signal processing circuit 9 and output to corresponding terminals 10, 11, and 12 as a two-channel audio signal and a standard color television signal, respectively.

Furthermore, when the playback operation of the player 1 due to the insertion of a coin is completed, the transmission of the insertion detection signal from the coin counter 20 is stopped, so the controller microcomputer 19 requests the player microcomputer 14 via the connection cable 18 to prohibit the operation again. Output a signal. Based on this operation prohibition signal, the player microcomputer 14 is kept in a state in which it does not accept any signal from the operation input section 15 again.

In such a playback state and a playback operation prohibited state of the player 1, the connection cable 18 is disconnected or the controller 17 is powered off.
When this happens, the control voltage of the electronic switch 23 drops and becomes the "L" level, so the electronic switch 23
is turned on. In other words, this is equivalent to pressing the stop key 24 of player 1. Therefore, when the player 1 is in the reproduction operation prohibited state, this is equivalent to a prohibition release signal being output to the player microcomputer 14, and the player microcomputer 14 can accept the signal from the operation input unit 15. However, since the electronic switch 23 is ON, even if the start key of the operation input section 15 is pressed, the player microcomputer 14 remains in the stopped state. Further, when the player 1 is in the playback state, even if the playback state is canceled and the start key is pressed thereafter, the electronic switch 23
Since this is ON, the player microcomputer 14 maintains its non-operating state.

That is, no matter what state the player 1 is in, when the connection cable 18 is disconnected or the controller 17 is powered off,
The player microcomputer 144 remains in a stopped state, and the player 1 becomes unable to operate independently.

(Effects of the Invention) As explained above, according to the present invention, the connection cable connecting the controller and the player is disconnected, or the controller's power supply is turned off.
When it is turned off, the player is configured so that it will not operate even if the player's start key is pressed, so there is no need to disconnect the connection cable or turn off the power to the controller.
Even if a situation occurs where the player is turned off, it is possible to prevent the player from being used for free, and
It is also possible to prevent troubles such as mismatch between the number of coins inserted and the number of playbacks.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the electrical configuration of a video disc player with a coin counter according to the present invention, and FIG. 2 is a block diagram showing the electrical connections of switching elements. DESCRIPTION OF SYMBOLS 1...Video disc player, 14...Player microcomputer, 17...Controller, 1
8... Connection cable, 19... Controller microcomputer, 20... Coin counter, 23... Electronic switch (switching element), 24... Stop key.

Claims (1)

[Scope of Claims] 1. A video disc player equipped with a start key for instructing the start of an operation and a stop key for instructing the stop of the operation, and a controller having a coin counting function are connected via a connection cable, and the controller When a coin is not inserted, the video disk player is configured to send an operation prohibition signal instructing the video disk player to prohibit its operation, and when a coin is inserted, it sends a signal instructing the video disk player to cancel the prohibition. In the video disc player with a coin counter, the video disc player is configured to operate based on each of the signals, and the video disc player is configured to have a switching device that is turned off only when a voltage is applied to the control input. A video disk player with a coin counter, characterized in that an element is connected in parallel with a stop key of the player, and a power supply voltage of the controller is applied to a control input of the switching element via the connection cable.