JP2008272190A - Door opening detection apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately detect opening of a door by an inexpensive configuration. <P>SOLUTION: A flip-flop circuit FF1 stores a Hi signal as prescribed data by a reset signal. When it is detected that the door is opened and an opening detection switch SW1 is turned ON, an auxiliary power source V<SB>0</SB>inputs a pulse signal to the clock signal input terminal of the flip-flop circuit FF1, inputs a Low signal to a grounded data input terminal, and thus updates stored prescribed Hi data to Low data. The opening decision part 4b of a control part 4 decides whether the opening of the door is detected depending on whether the Hi data are stored in the flip-flop circuit FF1. This invention is applicable to a monitoring system. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a door opening detection device and method, and more particularly, to a door opening detection device and method that can reliably detect an unauthorized opening of a gaming machine door with an inexpensive configuration.

  In game stores, prevention of unauthorized modification of game machines after closing has become an issue, and a function of monitoring the opening of a door after the power supply of the game machine is cut off is required.

  Currently, a single gaming machine is generally equipped with a door opening / closing detection function, but only operates when power is supplied to the gaming machine.

  In view of this, there has been proposed means for detecting the door opening during the non-power supply period by discharging the charge of the capacitor charged in advance when the door is opened (see Patent Document 1).

  In addition, as the equipment of the amusement store, a configuration in which an open / close signal of a door open / close detection function is directly transmitted to the hall computer, a configuration in which a cover open / close signal is stored in a controller and a notification / operation stop process is proposed (Patent Literature) 2 and 3).

  Recently, there has also been proposed a configuration in which a gaming machine body is provided with a battery and an opening / closing detection function, and a history such as opening / closing time is always recorded, and history data is communicated with a hall computer (see Patent Document 4). This is to detect and record the open / closed state at regular intervals from the time of product shipment, and to prevent unauthorized replacement by having a unique ID for the monitoring unit.

JP 2001-340595 A JP 2001-009137 A JP 2005-218597 A JP 2003-159466 A

  However, in the technique described in Patent Document 1 described above, after discharging the charge of the capacitor by opening the door, it can be easily restored to the original state by recharging the capacitor using an external power source. There is a risk that no trace will be left indicating that there was an unauthorized opening.

  In the technique described in Patent Document 2, when a door open / close signal is transmitted to the hall computer, it is necessary to keep the hall computer running even after the store is closed, and the wiring for realizing the opening / closing detection function is short-circuited. The function may be easily invalidated.

  Furthermore, in the technique described in Patent Document 3, a latch circuit is used as a mechanism for storing a door opening / closing signal. However, when a clear signal is input from the outside, the stored content is easily changed, and the original There is a risk that it will be returned to the state and no trace will be left indicating that the door has been opened improperly.

  Moreover, in the technique described in Patent Document 4, since the configuration is such that the opening / closing history is stored using a battery, an arithmetic device for executing complicated processing, a large capacity for storing programs and history data, and the like. Since a storage mechanism is required, it may be expensive. In addition, since much of the processing depends on an arithmetic processing device that manages the entire amusement store, there is a risk that the cost may increase.

  The present invention has been made in view of such a situation. For example, after turning off the power supply, the opening of the door of the gaming machine is detected, the detection result is held, and the held detection result is illegal. Therefore, it is possible to detect the opening of the door reliably and inexpensively.

  The door opening detection device according to one aspect of the present invention includes a storage unit that stores predetermined data, and the predetermined data stored by the storage unit when the opening of the door is detected by detecting the opening of the door. Updating means for updating the data to other predetermined data different from the predetermined data.

  When a signal having a predetermined pattern is input, the storage unit can further include a reset unit that stores the predetermined data.

  An auxiliary power source that is turned on when the main power source is stopped can be further included, and the storage unit stores the predetermined data when the main power source is stopped and switched to the auxiliary power source. can do.

  An auxiliary power supply having a voltage lower than that of the main power supply can be further included, and the auxiliary power supply and the diode are connected in a forward direction to supply power to the storage means, and the power supply is connected in series. A main power supply can be connected in parallel to the auxiliary power supply and the diode.

  Other diodes different from the main power supply and the diode may be connected in the forward direction in parallel to the auxiliary power supply and the diode connected in series.

  A switching means for connecting or disconnecting the signal line for storing or reading the predetermined data stored by the storage means can be further included, and power supply from the main power supply is stopped. If so, the switching means can be made to disconnect the signal line.

  The storage means may be a D-type flip-flop.

  The update means may include a contact switch, a proximity switch, an optical switch, or a magnetic switch.

  The storage unit may further include a determination unit that determines whether the opening of the door is detected based on whether the predetermined data is stored.

  The door opening detection method according to one aspect of the present invention includes a storage step of storing predetermined data, and the opening of the door is detected, and when the opening of the door is detected, the predetermined opening stored by the processing of the storage step. And updating the data to other predetermined data different from the predetermined data.

  The gaming machine of the present invention can include the door opening detection device according to claim 1.

  In the door opening detection device and method according to one aspect of the present invention, when predetermined data is stored, door opening is detected, and opening of the door is detected, the stored predetermined data is stored in the predetermined data. The data is updated to other predetermined data different from the data.

  In the door opening detection device according to one aspect of the present invention, the storage means for storing predetermined data is, for example, a flip-flop circuit, and detects the opening of the door, and the storage is detected when the opening of the door is detected. The update means for updating the predetermined data stored by the means to other predetermined data different from the predetermined data is, for example, an open detection switch.

  That is, at a timing immediately before the power supply from the gaming machine power supply is stopped, the flip-flop circuit stores predetermined data, and when the opening of the door is detected, a clock signal is sent to the flip-flop circuit by the opening detection switch. , The stored predetermined data is updated to other predetermined data different from the predetermined data. For this reason, if the predetermined data stored by the flip-flop circuit is stored at the timing when power supply from the gaming machine power supply unit is started, the opening determination unit of the control unit detects the opening of the door. If it is updated to other predetermined data different from the predetermined data, it is determined that the opening of the door has been detected.

  As a result, if the door is illegally opened between the time when the power supply of the gaming machine is stopped and the time when power is supplied next time, the flip-flop circuit has another predetermined data different from the predetermined data. Since the data is updated, it is possible to recognize that the opening of the door is detected for some reason while the power supply is stopped.

  As a result, the opening of the door of the gaming machine is detected after the power is turned off, and the detection result cannot be manipulated illegally, so that it is possible to detect the opening of the door reliably and inexpensively.

  According to the present invention, it is possible to detect opening of a door reliably and inexpensively.

  Embodiments of the present invention will be described below. Correspondences between the configuration requirements of the present invention and the embodiments described in the detailed description of the present invention are exemplified as follows. This description is to confirm that the embodiments supporting the present invention are described in the detailed description of the invention. Accordingly, although there are embodiments that are described in the detailed description of the invention but are not described here as embodiments corresponding to the constituent elements of the present invention, It does not mean that the embodiment does not correspond to the configuration requirements. Conversely, even if an embodiment is described here as corresponding to a configuration requirement, that means that the embodiment does not correspond to a configuration requirement other than the configuration requirement. It's not something to do.

  That is, the door opening detection device according to one aspect of the present invention detects storage opening (for example, the flip-flop circuit FF1 in FIG. 1) for storing predetermined data and the opening of the door, and the opening of the door is detected. In this case, update means (for example, an open detection switch SW1 in FIG. 1) for updating the predetermined data stored by the storage means to other predetermined data different from the predetermined data is included.

  When a signal having a predetermined pattern is input, the storage unit can further include a reset unit (for example, the reset management unit 4a of the control unit 4 in FIG. 1) that stores the predetermined data. .

An auxiliary power supply (for example, the auxiliary power supply V _{0 in} FIG. 1) that is turned on when the main power supply (for example, the gaming machine power supply unit V ₅ in FIG. 1) is stopped can be further included. (For example, the flip-flop circuit FF1 in FIG. 1) can store the predetermined data when the main power supply is stopped and switched to the auxiliary power supply.

An auxiliary power source (for example, auxiliary power source V _{0 in} FIG. 1) having a voltage lower than that of the main power source (for example, gaming machine power source V ₅ in FIG. 1) can be further included. For example, the diode D1) of FIG. 1 is connected in the forward direction to supply power to the storage means, and the main power supply is connected in parallel to the auxiliary power supply and the diode connected in series. You can make it.

  The main power supply and another diode different from the diode (for example, the diode D2 in FIG. 1) are connected in parallel to the auxiliary power supply and the diode connected in series. Can do.

  Switching means (for example, switches SW11 and SW12 in FIG. 14) for connecting or disconnecting the signal line for storing or reading the predetermined data stored by the storage means can be further included. When power supply from the main power supply is stopped, the switching unit can disconnect the signal line.

  The storage means (for example, the flip-flop circuit FF1 in FIG. 1) can be a D-type flip-flop.

  The update means (for example, the open detection switch SW1 in FIG. 1) may include a contact switch, a proximity switch, an optical switch, or a magnetic switch.

  Further included is a determination unit (for example, an opening determination unit 4b of the control unit 4 in FIG. 1) for determining whether or not the opening of the door is detected based on whether or not the predetermined data is stored in the storage unit. Can be.

  The door opening detection method according to one aspect of the present invention includes a storage step (for example, step S2 in FIG. 2) for storing predetermined data, and the opening of the door is detected, and when the opening of the door is detected, the storage is performed. An update step (for example, step S4 in FIG. 2) for updating the predetermined data stored by the processing of the step to other predetermined data different from the predetermined data.

  FIG. 1 is a diagram illustrating a configuration of an embodiment of a gaming machine including a door opening detection unit that detects opening of a front door according to the present invention.

  The gaming machine includes a door opening detection unit 1, connectors 2 and 3, a control unit 4, a gaming machine power supply unit 5, an AC power supply 6, and a notification unit 7.

  The door opening detection unit 1 stores predetermined data input from the control unit 4 immediately before the supply of power from the gaming machine power supply unit 5 which is a main power source of the gaming machine is stopped, and the door opening detection unit 1 Enter the monitoring state to monitor opening. When the door opening detecting unit 1 detects the opening of the front door of the gaming machine (not shown) until the power supply from the gaming machine power supply unit 5 is started, the door opening detecting unit 1 sets other predetermined data different from the predetermined data. Update. When power is turned on from the gaming machine power supply unit 5, the control unit 4 is based on whether the door opening detection unit 1 stores predetermined data or other predetermined data. Then, it is determined whether or not the opening of the front door is detected.

  The connectors 2 and 3 are connecting terminals each having an uneven shape provided so that the door opening detection unit 1 can be assembled or removed independently from the gaming machine. The connectors 2 and 3 are input to the door opening detection unit 1 from the power supply line supplied from the gaming machine power supply unit 5 to the door opening detection unit 1 from the top of FIG. 1 and the reset terminal RES of the control unit 4. A reset signal line for transmitting a reset signal, an open detection signal line for transmitting an open detection signal stored in the door open detection unit 1, and a ground line connected to the ground portion are connected.

The control unit 4 operates with direct current power supplied from the gaming machine power source unit 5 that converts the alternating current power source from the alternating current power source 6 into a direct current power source, manages the overall operation of the gaming machine, and opens the door opening detection unit 1. To control the operation. In addition, when the operation unit (not shown) is operated by the user and the switch SW2 is turned off, the control unit 4 performs various kinds of processing until the power supply is completely stopped (for about 0.1 second). Is stored in a non-volatile memory (not shown) and the reset management unit 4a is controlled to input a reset signal to the door opening detection unit 1 from the reset terminal RES. In addition, when the switch SW2 is turned on, the control unit 4 controls the opening determination unit 4b to receive and receive the opening detection signal from the door opening detection unit 1 input to the terminal V _IN . Based on the opening detection signal, while the power supply is stopped, it is determined whether or not the front door of the gaming machine (not shown) is opened, that is, whether or not unauthorized opening is detected, and the determination result In response to this, the reporting unit 7 is operated to report that there has been an unauthorized opening of the door.

  The gaming machine power supply unit 5 converts the AC power supplied from the AC power supply 6 into a DC power supply that can be used in the gaming machine, and supplies it to the door opening detection unit 1 and the control unit 4. The voltage of power that can be used in the gaming machine is, for example, 5V. In the following, the description will be made assuming that the voltage is 5 V, but it goes without saying that other voltages may be used.

Next, a configuration example of the door opening detection unit 1 will be described. The door opening detection unit 1 includes a flip-flop circuit FF1, diodes D1 and D2, a resistor R1, an auxiliary power source V ₀ , and a door opening detection switch SW1.

  The flip-flop circuit FF1 is a D-type flip-flop circuit, and includes a power supply terminal Vcc, a preset terminal PRE, a data input terminal D, a clock signal input terminal CK, a clear terminal CLR, a ground terminal GND, a positive output terminal Q, and a negative output terminal. Q ′ (in FIG. 1, a bar is shown above Q, but in this specification, it is referred to as “Q ′” for convenience of display).

  The flip-flop circuit FF1 is driven by the power supplied to the power supply terminal Vcc, holds the signal input to the data input terminal D at the timing when the clock signal input to the clock signal input terminal CK falls, and the same signal Is output from the positive output terminal Q, and a negative signal is output from the negative output terminal. That is, when Hi data is input to the data input terminal D at the timing when the clock signal falls to the clock signal input terminal CK, the flip-flop circuit FF1 holds Hi, which is data, from the positive output terminal Q. The same Hi signal is output from the negative output terminal Q ′ as Low, which is a Hi negative signal. On the other hand, when Low data is input to the data input terminal D at the timing when the clock signal falls to the clock signal input terminal CK, the flip-flop circuit FF1 holds Low as data and the positive output terminal Q The same low signal is output from the negative output terminal Q ′ as Hi, which is a low negative signal.

  In addition, when a Hi signal is input to the preset terminal PRE, the flip-flop circuit FF1 forcibly holds Hi at the positive output terminal Q regardless of the signal input to the clock signal input terminal CK. Further, when the Hi signal is input to the clear terminal CLR, the flip-flop circuit FF1 forcibly sets the positive output terminal Q to Low by the input signal regardless of the signal input to the clock signal input terminal CK. Hold.

  That is, the D-type flip-flop circuit FF1 functions as a memory that stores 1-bit data.

The diode D1, as viewed from the positive terminal of the auxiliary power supply V ₀ is provided in a forward direction toward the power supply terminal Vcc of the flip-flop circuit FF1, when the power from the game machine power supply unit 5 is supplied, the power of Prevent backflow.

The diode D2 is provided in the forward direction with respect to the direction of the power supply terminal Vcc of the flip-flop circuit FF1 when viewed from the gaming machine power supply unit 5, the power supply from the gaming machine power supply unit 5 is stopped, and the auxiliary power supply V _{0 is provided.} When more power is supplied, the potential of the gaming machine power supply unit 5 becomes indefinite, and the power supply line and the ground line of the connector 2 are illegally forcibly short-circuited to prevent backflow of power supplied from the auxiliary power supply V _0. By doing so, Vcc and GND of the flip-flop circuit FF1 are short-circuited to prevent an action of performing a reset operation.

Further, the output voltage V ₅ of the auxiliary power supply V ₀ and the gaming machine power supply unit 5, has a relationship satisfying the relationship of the following equation (1).

V ₀ −Vd1 <V ₅ −Vd2
... (1)

Here, V ₀ is the power supply voltage of the auxiliary power supply V ₀ , Vd2 is the forward voltage of the diode D2, V ₅ is the power supply voltage supplied from the gaming machine power supply unit 5, and Vd1 is This is the forward voltage of the diode D1. Therefore, when there is a power supply from the gaming machine power supply unit 5, the power supply terminal Vcc, the voltage represented by (V _5-VD2) is applied, the auxiliary power supply from the gaming machine power supply unit 5 is eliminated supply V ₀ A voltage represented by (V ₀ -Vd1) is applied.

  The resistor R1 has one end connected to the same potential as the power supply terminal Vcc and the other end connected to the clock signal input terminal CK, and adjusts the voltage input to the clock signal input terminal CK.

  The door opening detection switch SW1 is a switch composed of a contact switch, a proximity switch, an optical switch, a magnetic switch, etc., and is turned on when the opening of the door provided on the front of the gaming machine (not shown) is detected. In other cases, that is, in a normal state where the door is closed, the switch is set to OFF.

  Next, with reference to the flowchart of FIG. 2, the door opening detection process by the gaming machine provided with the door opening detection unit 1 of FIG. 1 will be described.

In step S1, the control unit 4 detects the voltage of its own power supply terminal Vdd supplied through the gaming machine power supply unit 5, and determines whether or not the switch SW2 that is the power source of the gaming machine body is turned off. To do. That is, the control unit 4 determines whether or not the voltage at the power supply terminal Vdd is greater than a predetermined threshold value Vth in which the voltage V ₅ supplied via the gaming machine power supply unit 5 is equal to ₅ V (rated voltage). If it is larger, it is considered that the power source of the gaming machine body is not turned off, and the same processing is repeated. In step S1, for example, as shown in the uppermost waveform diagram of FIG. 3, when the switch SW2 is turned OFF at time t1, the voltage drops, and at time t2, the voltage V ₅ is predetermined. If it is determined that the threshold value Vth is smaller than the threshold value Vth, it is assumed that the switch SW2 is turned off, and the process proceeds to step S2.

Note that the gaming machine power supply unit 5 converts the power supplied from the AC power supply 6 to a voltage of about 5V and supplies it to the door opening detection unit 1 and the control unit 4, and there is time for the conversion process. Even when the switch SW2 is turned off, the voltage gradually drops as shown in the uppermost waveform diagram of FIG. Further, in FIG. 3, waveform chart of the uppermost stage of the supply voltage V ₅ of the gaming machine power supply unit 5, the applied voltages V ₁ to the waveform diagram of the second stage is supplied to the power supply terminal Vcc, 3-stage waveform The figure shows the applied voltage V _{2 at} the preset terminal PRE, the waveform diagram at the fourth stage shows the applied voltage V _{3 at} the clock signal input terminal CK, and the waveform chart at the fifth stage shows the output voltage V _{4 at} the positive output terminal Q, respectively. A time-series potential change is shown.

  In step S2, the control unit 4 controls the reset management unit 4a to preset the preset from the reset terminal RES to the door opening detection unit 1 at time t2 in the third waveform diagram of FIG. A pulsed reset signal of the applied voltage V2 at the terminal PRE is output. As a result of this processing, a reset signal is input to the preset terminal PRE, so that the flip-flop circuit FF1 forcibly switches from Low to Hi as shown in the waveform diagram of the fifth stage in FIG. And output from the positive output terminal Q. In the pulse waveform from time t2 in the third-stage waveform diagram of FIG. 3, the voltage at the top of the waveform decreases as the voltage supplied from the gaming machine power supply unit 5 decreases.

After this process, the power supply voltage V ₅ supplied from the gaming machine power supply 5 further drops. When the power supply voltage V ₅ further drops, the voltage V _{1 at} the power supply terminal Vcc becomes the voltage V ₁ supplied by the auxiliary power supply V _{0 at} time t3 as shown in the second-stage waveform diagram of FIG. It stabilizes at a voltage Vc that has dropped from ₀ by the voltage of the diode D1. Correspondingly, the voltage V ₃ at the clock signal input terminal CK and the output voltage V _{4 at the} positive output terminal Q at the time t3 are as shown in the fourth and fifth waveform diagrams of FIG. The voltage drop is stopped corresponding to Vc. That is, at time t3 and later, the flip-flop circuit FF1 is their drive power from the power supply of the gaming machine power supply unit 5 is switched to the power supply of the auxiliary power supply V _0.

  In step S3, it is determined whether or not the front door of the gaming machine is opened and the switch SW1 is turned on. For example, if the door is not opened and the switch SW1 is turned off, the process proceeds to step S5. move on.

In step S5, the control unit 4 detects the voltage of its own power supply terminal Vdd supplied via the gaming machine power supply unit 5, and determines whether or not the switch SW2 that is the power source of the gaming machine body is turned on. To do. That is, the control unit 4 determines whether or not the voltage at the power supply terminal Vdd is greater than a predetermined threshold value Vth in which the voltage V ₅ supplied via the gaming machine power supply unit 5 is equal to ₅ V (rated voltage). If it is smaller, the power source of the gaming machine main body is regarded as being kept off, and the process returns to step S3. That is, the processes in steps S3 to S5 are repeated until it is determined that the power is turned on.

In step S5, for example, as shown in the uppermost waveform diagram of FIG. 3, when the switch SW2 is turned on, the voltage rises, and at time t4, the voltage V ₅ becomes a predetermined threshold value. When it becomes larger than Vth, it is considered that the switch SW2 is turned on, and the process proceeds to step S6.

In step S6, the control unit 4 controls the opening determination unit 4b to receive the opening detection signal from the door opening detection unit 1 input to the terminal V _IN , and the received opening detection signal immediately after the power is turned off. It is determined whether or not the signal is forcibly stored in the flip-flop circuit FF1 in the process of step S2. That is, since the Hi signal is stored in the flip-flop circuit FF1 by the process of step S2, the opening determination unit 4b receives the opening detection signal from the door opening detection unit 1 input to the terminal V _IN as Hi. If it remains, the opening detection signal is not a door opening signal indicating that the opening of the door has been detected, so the processing returns to step S1.

On the other hand, in step S3, for example, when the front door of the gaming machine (not shown) is opened and the switch SW1 is turned on, in step S4, it is indicated by time t5 in the fourth waveform diagram of FIG. As shown, since the applied voltage V ₃ to the clock signal input terminal CK becomes a falling signal, the flip-flop circuit FF1 holds the Low signal input to the data input terminal D, thereby opening the door. Is updated to a Low signal indicating that the signal is detected, and a Low signal is output from the positive output terminal Q after time t5 as shown in the fifth-stage waveform diagram of FIG.

As a result, since the Low signal is stored in the flip-flop circuit FF1 in Step S6, the opening determination unit 4b receives the Low detection signal from the door opening detection unit 1 input to the terminal V _IN. Since it is stored that the door has been opened, it is regarded as a door opening signal indicating that the opening of the door has been detected, and the process proceeds to step S7. The waveform diagrams from the top to the fifth level in FIG. 4 show the same voltage waveforms as in FIG. 3, but are waveforms when the front door is opened at time t5.

  In step S7, the control unit 4 controls the reporting unit 7 to detect that the front door of the gaming machine is illegally opened after the power supply from the gaming machine power supply unit 5 is stopped. To report.

  In step S <b> 8, the control unit 4 determines whether or not an operation unit (not shown) has been operated to instruct stop of the operation of the reporting unit 7. If not, the same process is repeated. That is, the processing is repeated until the stop of the notification operation is instructed, and the notification is continued. In step S8, when an instruction to stop the reporting operation is given, the control unit 4 stops the reporting operation, the process returns to step S1, and the subsequent processes are repeated.

When the power supply from the gaming machine power supply unit 5 is stopped by the above processing, the flip-flop circuit FF1 of the door opening detection unit 1 is driven by the auxiliary power supply V _{0 and} is forcibly set by the reset signal from the control unit 4. While maintaining the Hi state, as shown in FIG. 3 or FIG. 4, the monitoring state is entered at times t2 to t4. In the monitoring state, when the switch SW1 is turned on by unauthorized opening of the front door of the gaming machine, the falling signal of the clock signal input terminal CK of the flip-flop circuit FF1 is supplied. The circuit FF1 holds the Low signal based on the Low signal input to the data input terminal D and outputs it from the positive output terminal Q.

  Therefore, when the switch SW2 is turned on and the gaming machine power supply unit 5 is driven, the opening determination unit 4b of the control unit 4 is the door that is output from the positive output terminal Q of the flip-flop circuit FF1 of the door opening detection unit 1. If the opening detection signal is Hi, it is considered that the opening of the front door is not detected, and conversely, if the door opening detection signal is Low, it is considered that the unauthorized opening of the front door is detected.

  As a result of the above processing, at the game store, when the business of the day ends and the power of the gaming machine is turned off, the Hi data is immediately stored in the flip-flop circuit FF1 of the door opening detection unit 1. However, if the front door is illegally opened before the start of business the next day, low data is stored in the flip-flop circuit FF1 of the door opening detection unit 1. For this reason, the processing immediately after the power is turned on the next day causes the Low data stored in the flip-flop circuit FF1 to be different from the Hi data stored immediately after the end of the previous day. A trace indicating that the unauthorized opening of the front door of the machine has been detected remains, and it is possible to reliably detect the presence or absence of the unauthorized opening of the front door with a simple circuit.

  Further, when the monitoring operation is continued even while the gaming machine power supply unit 5 is being driven, if the door opening is detected and the reset management unit 4a transmits a reset signal every time the door opening signal is stored, the monitoring is performed again. It is possible to return to operation. By repeating this operation, it is possible to always monitor the opening of the door.

  As a result, it is possible to detect the opening of the door reliably and inexpensively by the simple door opening detecting unit 1 using the flip-flop circuit.

  In the above, based on the output signal from the positive output terminal Q, the presence / absence of unauthorized opening of the front door is determined, but the detection is performed by further using the output signal from the negative output terminal Q ′. You may make it improve the determination precision of a result.

  FIG. 5 shows a configuration example of the door opening detection unit 11 that further uses the output signal from the negative output terminal Q ′ to improve the determination accuracy of the detection result. In FIG. 5, the same reference numerals are given to configurations having the same functions as those in FIG. 1, and descriptions thereof are omitted as appropriate.

That is, the door opening detection unit 11 in FIG. 5 is different from the door opening detection unit 1 in FIG. 1 in that the output signal of the negative output terminal Q ′ of the flip-flop circuit FF1 is input to the control unit 14. . Correspondingly, a control unit 14 is provided instead of the control unit 4. The control unit 14 includes a reset management unit 14a and an opening determination unit 14b, and is the same as the control unit 4 except for the function of the opening determination unit 14b. That is, the opening determination unit 14b determines whether or not the door is open according to the combination of the output signals of the positive output terminal Q and the negative output terminal Q ′ received at the terminals V _IN1 and V _IN2 . Further, instead of the connectors 2 and 3, connectors 12 and 13 are provided. The connectors 12 and 13 have 5 terminals including the output signal line from the negative output terminal Q ′ newly, whereas the connectors 2 and 3 have 4 terminals.

  Next, with reference to the flowchart of FIG. 6, the door opening detection process by the gaming machine provided with the door opening detection unit 11 of FIG. 5 will be described. Note that the processing in steps S21 to S25, S27, and S28 in FIG. 5 is the same as the processing in steps S1 to S5, S7, and S8 in FIG.

In step S26, the control unit 14 controls the opening determination unit 14b to receive the opening detection signal from the door opening detection unit 11 input to the terminals V _IN1 and V _IN2 , and the received opening detection signal is supplied from the power source. After OFF, it is detected that the door has been opened, and it is determined whether or not the signal is stored in the flip-flop circuit FF1 in the process of step S24, that is, a signal indicating that the door has been opened. .

In step S26, for example, the open detection signal from the positive output terminal Q of the door opening detection unit 11 input to the terminal V _IN1 is Low, and the negative output terminal of the door opening detection unit 11 input to the terminal V _IN2 If the opening detection signal from Q ′ is Hi, the flip-flop circuit FF1 stores a Low signal, that is, information indicating that the door has been opened. Therefore, the opening determination unit 14b regards it as a door opening signal indicating that door opening has been detected, and the process proceeds to step S27.

On the other hand, if it is a door non-open signal indicating that the door opening is not detected in step S26, for example, in step S29, the flip-flop circuit FF1 is set to Hi by the process of step S22 performed immediately after the power is turned off. The signal is stored, and the opening detection signal from the positive output terminal Q of the door opening detection unit 11 output to the terminal V _IN1 remains Hi, and the door opening detection unit 11 of the door opening detection unit 11 output to the terminal V _IN2 When the open detection signal from the negative output terminal Q ′ is Low, the signal from the flip-flop circuit FF1 is the signal stored in the flip-flop circuit FF1 in the process of step S22 performed immediately after the power is turned off. The opening determination unit 14b regards it as a door non-opening signal indicating that door opening has not been detected, and the process returns to step S21.

Further, in step S29, the open detection signal from the positive output terminal Q of the door open detector 11 input to the terminal V _IN1 is Low, and the negative output terminal of the door open detector 1 input to the terminal V _IN2 When the open detection signal from Q ′ is Low, the open determination unit 14b controls the reporting unit 7 to consider that a disconnection abnormality has occurred, or that device destruction has occurred due to fraud. In S30, the occurrence of a disconnection abnormality or the occurrence of device destruction due to fraudulent activity is reported, and the process proceeds to step S28.

These are summarized as shown in FIG. That is, when Hi is input to the terminal V _IN1 and Low is input to the terminal V _IN2 , the signal is stored in the flip-flop circuit FF1 in the process of step S22 performed immediately after the power is turned off. 14b is considered that the unauthorized door opening was not detected after the power supply from the gaming machine power supply unit 5 was stopped, that is, there was no abnormality. In addition, when Low is input to the terminal V _IN1 and Hi is input to the terminal V _IN2 , the signal is an update of the flip-flop circuit FF1 in the process of step S24 performed immediately after the power is turned off, and the open determination unit 14b The unauthorized door opening is detected after the power supply from the gaming machine power supply unit 5 is stopped, that is, it is assumed that there is an abnormality, and the reporting unit 7 is notified. Further, when Low is input to both the terminal V _IN1 and the terminal V _IN2 , the opening determination unit 14b regards the door opening detection unit 11 as having a disconnection abnormality or a device destruction due to fraud, and a reporting unit. 7 to report.

In step S29, a combination in which Hi is input to both the terminal V _IN1 and the terminal V _IN2 is also conceivable. However, there is a signal that generates some signal between the flip-flop circuit FF1 and the control unit 4. However, as long as there is no erroneous connection such that the signal from the positive output terminal Q is connected, output in such a combination cannot be considered, so it is not given here as an example. However, if such a combination of signals is input, a signal that generates some signal is improperly attached or a wiring error, so that the same processing as when both are Low is performed. Can respond.

  According to the above, since it is determined whether or not the door opening has been detected by using the paired signals of the positive output terminal Q and the negative output terminal Q ′ from the flip-flop circuit FF1, it is more accurate. It is possible to detect the opening of the door. In addition, it is possible to detect an equipment breakage due to a disconnection abnormality or an illegal act from the relationship between the positive and negative signals.

  In the above example, the reset signal is input from the reset terminal RES of the control unit 4 to the preset terminal PRE of the flip-flop circuit FF1 immediately before the power supply from the gaming machine power supply unit 5 is stopped, thereby the flip-flop circuit FF1. When the Hi signal is stored, the state shifts to the monitoring state, and when the front door of the gaming machine is illegally opened and the door opening is detected, the flip-flop circuit FF1 stores Low. After the front door of the gaming machine is opened by action, when the connector 2 (or 12) is pulled out from the connector 3 (or 13) and a reset signal is directly input from the connector 2, the flip-flop circuit FF1 As a result, the Hi signal is stored, and there is a risk that the trace of detection of unauthorized door opening may be erased.

  Therefore, by setting the reset signal as a pattern composed of a plurality of signals, a person who has performed an illegal act may not be able to easily reset the state of the flip-flop circuit FF1.

  FIG. 8 shows a configuration example of a gaming machine including a door opening detection unit 21 that prevents an unauthorized person from resetting the flip-flop circuit FF1 by making the reset signal a pattern composed of a plurality of signals. Show. In FIG. 8, components having the same functions as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

That is, in the door opening detection unit 21 of FIG. 8, a reset control unit 31 is newly provided, and a control unit 24 is provided instead of the control unit 4. The control unit 24 includes a reset management unit 24a and an open determination unit 24b, and is the same as the control unit 4 except for the function of the reset management unit 24a. That is, the reset management unit 24 a inputs a 4-bit reset signal from the terminals V _{11 to} V ₁₄ to the door opening detection unit 21. In place of the connectors 2 and 3, connectors 22 and 23 are provided. The connectors 22 and 23 have seven terminals because the connectors 2 and 3 have four terminals, but terminals V _{11 to} V ₁₄ are newly provided in place of the reset terminal RES.

Reset control unit 31, when a pattern of 4 bits of the reset signal input from the terminal V ₁₁ to V ₁₄ by the reset management unit 24a, a predetermined pattern which is set in advance, preset terminal PRE of the flip-flop circuit FF1 Input reset signal to.

The reset control unit 31 includes an AND circuit AND1 and an inverter circuit INV1. The inverter circuit INV1 is provided in the second stage from the bottom in the figure, and outputs an inverted signal with respect to the input signal. That is, the inverter circuit INV1 outputs Low when Hi is input, and conversely outputs Hi when Low is input. The AND circuit AND1 outputs a reset signal to the preset terminal PRE of the flip-flop circuit FF1 when the signals from the terminals V ₁₁ , V ₁₂ , V ₁₄ and the inverter circuit INV1 are all Hi.

  Next, with reference to the flowchart of FIG. 9, the door opening detection process by the gaming machine provided with the door opening detection unit 21 of FIG. 8 will be described. Note that the processing of steps S41, S44 to S49 in the flowchart of FIG. 9 is the same as the processing of steps S1, S3 to S8 in the flowchart of FIG.

More specifically, in step S42, the reset control unit 31, a reset signal of regular patterns from the terminal V ₁₁ to V ₁₄ of the control unit 24 determines whether or not the input, until the correct reset signal is input, a similar Repeat the process.

That is, the pattern of the 4-bit reset signal output from the terminals V _{11 to} V ₁₄ is (V ₁₁ , V ₁₂ , V ₁₃ , V ₁₄ ) = (Hi, Hi, Hi, Hi), (Hi, Hi, Hi, Low), (Hi, Hi, Low, Hi), (Hi, Hi, Low, Low), (Hi, Low, Hi, Hi), (Hi, Low, (Hi, Low), (Hi, Low, Low, Hi), (Hi, Low, Low, Low), (Low, Hi, Hi, Hi), (Low, Hi, Hi, Low), (Low, Hi, Low, Hi), (Low, Hi, Low, Low), (Low, Low, Hi, Hi), (Low, Low, Hi, Low), (Low, Low, Low, Hi), (Low, Low, Hi) (Low, Low).

For Figure 8, the inverter circuit INV1 to the output terminal V ₁₃ is connected, at Low output terminal V ₁₃ represented by the pattern 3 in FIG. 8, and the other terminal if Hi Since the AND circuit AND1 receives a Hi signal for all four bits, the AND circuit AND1 outputs a Hi signal. Thus, in step S42, or reset the control unit 31, a reset signal _{(V 11, V 12, V} 13, V 14) is a = (Hi, Hi, Low, Hi) correct reset signal depending on whether it is Determine whether or not. Then, in step S42, the control unit 24 controls the reset management unit 24a, a terminal V ₁₁ to V ₁₄ to the door opening detection unit _{21 (V 11, V 12,} V 13, V 14) = (Hi, Hi, Low, when to output a reset signal of Hi), the aND circuit AND1 of the reset control unit 31, the signal from the terminal V _11, V _12, V ₁₄ and an inverter circuit INV1 are all Hi, the correct reset signal In step S43, a reset signal is output to the preset terminal PRE of the flip-flop circuit FF1.

  Even if the connector 22 is pulled out from the connector 23 and the reset signal is directly input from the connector 22 after the front door of the gaming machine is opened by the illegal operation by the above processing, the pattern of the 4-bit reset signal Since the reset control unit 31 cannot input a Hi signal to the preset terminal PRE unless it is input in a correct pattern, the trace that the front door of the gaming machine is opened due to fraud is left without being erased. It becomes possible.

In the above description, an example in which the AND circuit AND1 and the inverter circuit INV1 are used in configuring the reset control unit 31 has been described. For example, as shown in FIG. 11, an inverter circuit INV2 is further provided. By doing so, it becomes possible to generate reset signals of other patterns. That is, in FIG. 11, the reset management unit 24a of the control unit 4 outputs a 4-bit reset signal of (V ₁₁ , V ₁₂ , V ₁₃ , V ₁₄ ) = (Low, Hi, Low, Hi). Thus, the AND circuit AND1 outputs a reset signal to the preset terminal PRE. As a matter of course, the number of inverter circuits may be other than this, and may be connected to other lines.

  Further, the example of generating the reset signal pattern by the inverter circuit has been described, but any reset signal pattern composed of a plurality of signals can be configured. For example, as shown in FIG. The reset control unit 51 using the flip-flop circuits FF11 to FF13 may be used. 12, the positive output terminal Q of the flip-flop circuit FF11 and the data input terminal D of the flip-flop circuit FF12 are connected, and the positive output terminal Q of the flip-flop circuit FF12 and the flip-flop circuit FF13 are connected. And a clock signal generator (not shown) are connected to the clock signal input terminals CK of the flip-flop circuits FF11 to FF13, respectively, the negative output terminal Q ′ of the flip-flop circuit FF11, and the flip-flop circuit FF12. The positive output terminal Q and the negative output terminal Q ′ of the flip-flop circuit FF13 are connected to the input terminal of the AND circuit AND1, respectively. With such a configuration, a clock signal generator (not shown) generates a clock signal, and data is input in synchronization with the falling timing of the clock signal input to the clock signal input terminal CK of the flip-flop circuit FF11. By inputting data in the order of Low, Hi, and Low to the terminal D, the negative output terminal Q ′ of the flip-flop circuit FF11, the positive output terminal Q of the flip-flop circuit FF12, and the negative output terminal Q of the flip-flop circuit FF13 By outputting a Hi signal from each of ', the AND circuit AND1 outputs a Hi reset signal to the preset terminal PRE. As a matter of course, the number of flip-flop circuits may be other numbers, and the combination of the positive output terminal Q and the negative output terminal Q ′ connected to the AND circuit AND1 may be changed.

Furthermore, a circuit other than the AND circuit may be used. For example, as shown in FIG. 13, a reset control unit 61 using a multiplexer 62 may be used. The multiplexer 62 includes input terminals IN1 to IN3 that receive a 3-bit reset signal, and an output terminal OUT that outputs one of the input terminals A1 to A8 specified by the input pattern of the input terminals IN1 to IN3. . In this case, the input signal of the input terminal A4 is Hi because it is connected to the power supply, but the other input terminals A1 to A3 and A5 to A8 are grounded and Low. Accordingly, the 3-bit reset signal corresponding to the input terminal number is (V ₁₁ , V ₁₂ , V ₁₃ ) = (Low, Hi, Hi) (= 011 (binary number) = 4 (decimal number)). In some cases, since the Hi signal at the input terminal A4 is output from the output terminal OUT, the reset signal is input to the preset terminal PRE.

  The number of bits used is not limited to 3 bits and 4 bits, but may be other number of bits.

  In the above, by restricting the input of the reset signal to the preset terminal by an AND circuit or a multiplexer, the signal held in the flip-flop circuit FF1 cannot be returned to the state where the opening of the door is not detected. Although the example has been described, the flip-flop circuit FF1 is configured so that the input from the connectors 2, 12, and 22 is not accepted while the power supply from the gaming machine power supply unit 5 is stopped. The signal held in the memory may not be erased.

  FIG. 14 shows a configuration example of a gaming machine provided with a door opening detection unit 71 that prevents the flip-flop circuit FF1 from accepting an input from the connector 72 while the power supply from the gaming machine power supply unit 5 is stopped. Show. In FIG. 14, components having the same functions as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  14 differs from the door opening detection unit 1 of FIG. 1 in that a PNP transistor Tr1 is provided instead of the diode D2, and an analog switch is provided for each of the reset signal line and the opening detection signal line. The switches SW11 and SW12 are provided, and the preset terminal PRE of the flip-flop circuit FF1 and the ground GND are connected by a resistor R2.

The emitter of the transistor Tr1 is connected to the gaming machine power supply unit 5. The collector of the transistor Tr1 is connected to the resistor R2 and the control signal terminal Ctrl of the switches SW11 and SW12. Further, the base of the transistor Tr1 is connected to the power supply terminal Vcc of the flip-flop circuit FF1. The transistor Tr1 has a backflow prevention function like the diode D2 when the power supply from the gaming machine power supply unit 5 is stopped. The switches SW11 and SW12 are turned on by a control signal from the collector of the transistor Tr1, and are turned off when the power supply is stopped. Furthermore, since the transistor Tr1 stops the power supply to the emitter when the power supply from the gaming machine power supply unit 5 is stopped, the potential of each control signal terminal CONT from the collector to the switches SW11 and SW12 is low. Thus, the switches SW11 and SW12 are turned off. For this reason, when the flip-flop circuit FF1 is driven by the auxiliary power source V ₀ , the switches SW11 and SW12 are turned off.

  The resistor R11 is newly provided, one end is connected to the preset terminal PRE and the switch SW11, and the other end is grounded. However, the potential indefiniteness when the switch SW11 is turned off is eliminated. It is something to be made.

  Next, with reference to the flowchart of FIG. 15, the door opening detection process by the gaming machine provided with the door opening detection unit 71 of FIG. 14 will be described. Note that steps S61, S62, S65 to S67, and S70 to S72 in the flowchart of FIG. 15 are the same as steps S1 to S8 in the flowchart of FIG.

That is, in step S61, as shown in the uppermost waveform diagram of FIG. 16, by turning off the switch SW2 at time t1, the voltage V ₅ output from the gaming machine power supply unit ₅ becomes a predetermined value. When it becomes smaller than the threshold value Vth and it is recognized that the switch SW2 is turned off, in step S62, the control unit 4 controls the reset management unit 4a to the door opening detection unit 71 from the reset terminal RES. Te, as shown in time t2 in the waveform diagram of the second stage of FIG. 16, and inputs a pulse of the reset signal applied to the preset terminal PRE voltage V _22.

In step S63, when the voltage V ₅ output from the gaming machine power supply unit 5 further drops, the transistor Tr1 is turned off as shown at time t3 in the second-stage waveform diagram of FIG. voltage V ₂₁ is a voltage of the collector of Tr1 is changed to the condition becomes Low, the flip-flop circuit FF1 is driven by the auxiliary power supply V _0.

Note that in FIG. 16, the power supply voltage V ₅ to the waveform diagram of the uppermost stage is outputted from the gaming machine power supply unit 5, a waveform diagram of the second stage, the output terminal of the voltage V ₂₁ and the switch SW11 of the collector of the transistor Tr1 the side of the voltage V _22, 3-stage input voltage V ₃ of the clock signal input terminal CK of the waveform is the flip-flop circuit FF1, 4-stage waveform diagrams positive output terminal Q of the output voltage of the flip-flop circuit FF1 V ₄ and the waveform diagram of the fifth stage show the voltage V ₂₃ on the output terminal side of the switch SW12.

In step S64, since the voltage V ₂₁ becomes Low, the switch SW11, SW12 provided in each of the reset signal line and opening detection signal line becomes OFF (Open) state.

Further, in step S67, the when the switch SW2 is ON, the feed was started the game machine power supply unit 5 is power, it is recognized that the voltage V ₅ power exceeds a predetermined threshold value Vth is turned ON, the processing Advances to step S68.

In step S68, the transistor Tr1 is ON, the as shown in the second stage of the waveform diagram of FIG. 16, the voltage V ₂₁ is a voltage of the collector of the transistor Tr1 starts to rise, the flip-flop at the time t4 The circuit FF1 is switched to a state of being driven by the gaming machine power supply unit 5.

In step S69, since the voltage V ₂₁ becomes Hi, the switch SW11, SW12 provided in each of the reset signal line and opening detection signal line becomes ON (Close) state.

For this reason, as shown in the waveform diagram of the third stage in FIG. 16, when the opening of the front door of the gaming machine is not detected, as shown in the waveform chart of the fourth and fifth stages, at time t4, the output terminal of the voltage V ₂₃ of the switch SW12 is the same for Hi and the output voltage V ₄ of the positive output terminal Q of the flip-flop circuit FF1.

On the other hand, when the opening of the front door of the gaming machine is detected at time t5 as shown in the third waveform diagram of FIG. 17, as shown in the fourth waveform diagram, the flip-flop circuit FF1 Since the output voltage V ₄ of the positive output terminal Q becomes Low, as shown in the waveform diagrams of the fourth and fifth stages, the voltage V ₂₃ on the output terminal side of the switch SW12 is the voltage of the flip-flop circuit FF1 at time t4. It becomes the same Low as the output voltage V ₄ of the positive output terminal Q.

  Note that FIG. 17 shows a waveform diagram similar to the waveform diagram of each stage in FIG. 16, but shows the waveform when the opening of the front door is detected at time t5.

  As described above, when power is not supplied from the gaming machine power supply unit 5 and the door opening detection state of the front door of the gaming machine is in a monitoring state, the switches SW11 and SW12 are in an OFF state, and therefore directly from the connector 72. Even if a reset signal is input, it is not input to the preset terminal PRE of the flip-flop circuit FF1, so that it is possible to suppress fraud such as changing the state held by the flip-flop circuit FF1.

  In the above, the example in which the flip-flop circuit FF1 does not accept the input from the connector 72 while the power supply from the gaming machine power supply unit 5 is stopped by the analog switch has been described. According to the technique, the flip-flop circuit FF1 may be configured not to accept an input from the connector 72 while the power supply from the gaming machine power supply unit 5 is stopped.

  FIG. 18 includes a door opening detection unit 81 that prevents the flip-flop circuit FF1 from receiving an input from the connector 72 without using an analog switch while the power supply from the gaming machine power supply unit 5 is stopped. A configuration example of a gaming machine is shown. In FIG. 18, components having the same functions as those in FIG. 1 or FIG. 14 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  18 differs from the door opening detection unit 71 of FIG. 14 in that diodes D2, D11, D12, NPN transistors Tr11, and switches SW11 and SW12 made of analog switches and transistors Tr1 are replaced. This is in that Tr13, a PNP transistor Tr12, and resistors R21 to R25, R31 are provided.

  The cathode of the diode D11 is connected to the negative output terminal Q 'of the flip-flop circuit FF1, and the anode is connected to the other end of the resistor R21 and the anode of the diode D12. The anode of the diode D12 is connected to the other end of the resistor R21 and the anode of the diode D11. The cathode of the diode D12 is connected to the base of the transistor Tr11 and one end of the resistor R22.

The base of the transistor Tr11 is connected to the cathode of the diode D12 and one end of the resistor R2. The emitter of the transistor Tr11 is grounded. The collector of the transistor Tr11 is connected to the other end of the resistor R31 and the terminal V _IN of the control unit 4 via connectors 72 and 73.

  The emitter of the transistor Tr12 is connected to the gaming machine power supply unit 5. The collector of the transistor Tr12 is connected to the resistor R23 and the preset terminal PRE of the flip-flop circuit FF1. Further, the base of the transistor Tr12 is connected to one end of the resistor R24.

  The collector of the transistor Tr13 is connected to the other end of the resistor R24. The emitter of the transistor Tr13 is grounded. Further, the base of the transistor Tr13 is connected to the other end of the resistor R25.

One end of the resistor R21 is connected to the gaming machine power supply unit 5, and the other end is connected to the anodes of the diodes D11 and D12. One end of the resistor R22 is connected to the cathode of the diode D12 and the base of the transistor Tr11, and the other end is grounded. One end of the resistor R23 is connected to the collector of the transistor Tr12 and the preset terminal PRE of the flip-flop circuit FF1. One end of the resistor R24 is connected to the base of the transistor Tr12, and the other end is connected to the collector of the transistor Tr13. One end of the resistor R25 is connected to the reset terminal RES of the control unit 4 via the connectors 72 and 73, and the other end is connected to the base of the transistor Tr13. One end of the resistor R31 is connected to the gaming machine power supply unit 5, and the other end is connected to the collector of the transistor Tr11 and the terminal V _IN of the control unit 4. The resistors R21 to R25, R31 are all resistors used for voltage adjustment.

  Next, with reference to the flowchart of FIG. 19, the door opening detection process by the gaming machine provided with the door opening detection unit 81 of FIG. 18 will be described. Note that steps S81, S86 to S88, and S92 to S94 in the flowchart of FIG. 19 are the same as steps S1, S3 to S8 in the flowchart of FIG.

That is, in step S81, by turning off the switch SW2, the voltage V ₅ output from the gaming machine power supply unit 5 becomes smaller than the predetermined threshold value Vth, and it is recognized that the switch SW2 is turned off. Then, in step S82, the control unit 4 controls the reset management unit 4a to cause the door opening detection unit 81 to output a pulsed reset signal from the reset terminal RES.

  In step S83, the reset signal input via the resistor R25 generates a current at the base of the transistor Tr13, thereby turning on the transistor Tr13. Further, when the transistor Tr13 is turned on, a current is generated at the base of the transistor Tr12 via the resistor R24, thereby turning on the transistor Tr12.

In step S84, since the transistors Tr12 and Tr13 are in the ON state, the voltage V ₂ adjusted by the resistor R23 is applied to the preset terminal PRE of the flip-flop circuit FF1 by the power supplied from the gaming machine power supply unit 5. As a result, the flip-flop circuit FF1 forcibly switches from Low to Hi, stores normal data, and outputs it from the positive output terminal Q and the negative output terminal Q ′.

In step S85, the transistors Tr12 and Tr13 are turned off. That is, since it is a pulse-shaped reset signal that is output from the reset terminal RES, no current is generated at the base of the transistor Tr13 after the transmission of the reset signal is completed, so that the transistor Tr13 is turned off. Further, since the transistor Tr13 is turned off, no current is generated in the base of the transistor Tr12, so that the transistor Tr12 is also turned off. For this reason, in a situation where power is supplied from the gaming machine power supply unit 5, it is input to the preset terminal PRE of the flip-flop circuit FF1 only at the timing when the reset signal is input. Further, when the power supply is interrupted and V ₅ falls to the ground potential, Tr12 will not be turned on. For example, the connectors 72 and 73 are removed by an illegal action, and are forced to the base of Tr13 via R25 from the outside. Even when a potential is applied, the circuit is disconnected at the collector of Tr12, and a Hi signal is not input to the preset terminal PRE of the flip-flop circuit FF1, and the trace where the opening is detected is not illegally erased. .

Further, in step S88, the switch SW2 is turned ON, to start the supply of the gaming machine power supply unit 5 power, the control unit 4 recognizes that the voltage V ₅ power exceeds a predetermined threshold value Vth is set to the ON Then, the process proceeds to step S89.

  In step S89, it is determined whether or not the flip-flop circuit FF1 stores the Hi state. That is, the operation differs depending on whether the flip-flop circuit FF1 stores a Hi state or a Low state.

If the flip-flop circuit FF1 stores the Hi state in step S89, that is, if the door opening is not detected, a low signal is output from the negative output terminal Q ′ in step S90. For this reason, the power supplied from the gaming machine power supply unit 5 is not supplied to the base of the transistor Tr11 via the diode D12 by being drawn into the negative output terminal Q ′ via the diode D11. Then, the Hi signal is input to the terminal V _IN of the control unit 4. As a result, in step S92, the process returns to step S81 based on the door non-open signal indicating that the door opening is not detected.

On the other hand, when the flip-flop circuit FF1 stores the low state in step S89, that is, when the door opening is detected, a Hi signal is output from the negative output terminal Q ′ in step S91. For this reason, the power supplied from the gaming machine power supply unit 5 is supplied to the base of the transistor Tr11 via the diode D12, so that the transistor Tr11 is turned on, and the terminal V _IN of the control unit 4 is connected to the terminal _VIN . A Low signal that is the ground potential is input. As a result, in step S92, based on the door opening signal indicating that the opening of the door is detected, the processing is performed in steps S93 and S94.

When the power supply from the gaming machine power supply unit 5 is interrupted, no current flows from the resistor R21, so that the transistor Tr11 is turned off regardless of the state of the negative output terminal Q ′ of the flip-flop FF1, and the collector of the transistor Tr11 is It becomes an open state. Since the collector of the transistor Tr11 is opened, the terminal V _IN of the control unit 4 and the negative output terminal Q ′ of the flip-flop circuit FF1 are electrically disconnected.

  In other words, by combining a diode and a transistor, it is possible to realize ON or OFF (connection or disconnection on the circuit) of the reset signal line and the output signal line as in the case of using an analog switch. Become. As a result, it is possible to detect the opening of the door when the power supply from the gaming machine power supply unit 5 is stopped, and even if the connector 72 is pulled out and a reset signal is directly input, the flip-flop Since it is possible to maintain the state of the circuit FF1, fraud due to the direct input of the reset signal from the connector 72 can be prevented.

  The potential change during the door opening detection process by the gaming machine provided with the door opening detection unit 81 of FIG. 18 is the same as that by the gaming machine provided with the door opening detection unit 71 of FIG. Omitted.

  According to the above, it is possible to reliably detect the opening of the door by an inexpensive device.

  In the present specification, the steps describing the processing are executed in parallel or individually even if the processing performed in time series in the order described is not necessarily processed in time series. It includes processing.

It is a figure which shows the structural example of one Embodiment of the gaming machine provided with the door opening detection part to which this invention is applied. It is a flowchart explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. It is a figure explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. It is a figure explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. It is a figure which shows the structural example of embodiment of the game machine provided with the other door opening detection part. It is a flowchart explaining the door opening detection process by the gaming machine provided with the door opening detection part of FIG. It is a figure explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. Furthermore, it is a figure which shows the structural example of embodiment of the game machine provided with the other door opening detection part. It is a flowchart explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. It is a figure explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. It is a figure explaining the other structural example of a reset control part. It is a figure explaining the further example of composition of a reset control part. It is a figure explaining the further example of composition of a reset control part. Furthermore, it is a figure which shows the structural example of embodiment of the game machine provided with the other door opening detection part. It is a flowchart explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. It is a figure explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. It is a figure explaining the door opening detection process by the game machine provided with the door opening detection part of FIG. Furthermore, it is a figure which shows the structural example of embodiment of the game machine provided with the other door opening detection part. It is a flowchart explaining the door opening detection process by the game machine provided with the door opening detection part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door opening detection part 4 Control part 4a Reset management part 4b Opening determination part 5 Game machine power supply part 7 Notification part 11 Door opening detection part 14 Control part 14a Reset management part 14b Opening determination part 21 Door opening detection part 24 Control part 24a Reset management unit 24b Open determination unit 31, 41, 51, 61 Reset control unit 71 Door open detection unit 81 Door open detection unit

Claims (11)

Storage means for storing predetermined data;
Update means for detecting opening of the door and updating the predetermined data stored in the storage means to other predetermined data different from the predetermined data when the opening of the door is detected. Door open detection device. The door opening detection device according to claim 1, further comprising: a reset unit that stores the predetermined data in the storage unit when a signal having a predetermined pattern is input. It further includes an auxiliary power supply that is turned on when the main power supply is stopped,
The door opening detection device according to claim 1, wherein the storage unit stores the predetermined data when the main power supply is stopped and switched to the auxiliary power supply. It further includes an auxiliary power supply having a lower voltage than the main power supply,
The auxiliary power source and the diode are connected in the forward direction to supply power to the storage means;
The door open detection device according to claim 1 or 2, wherein the main power supply is connected in parallel to the auxiliary power supply and the diode connected in series. The door open detection device according to claim 4, wherein another diode different from the main power supply and the diode is connected in parallel to the auxiliary power supply and the diode connected in series. A switching means for connecting or disconnecting the signal line for storing or reading the predetermined data stored by the storage means;
The door opening detection device according to claim 1, wherein when the power supply from the main power supply is stopped, the switching unit disconnects the signal line. The door opening detection device according to claim 1, wherein the storage unit is a D-type flip-flop. The door opening detection device according to claim 1, wherein the update unit includes a contact switch, a proximity switch, an optical switch, or a magnetic switch. The door opening detection device according to claim 1, further comprising a determination unit that determines whether or not the opening of the door is detected based on whether or not the predetermined data is stored in the storage unit. A storage step for storing predetermined data;
An update step of detecting opening of the door and updating the predetermined data stored by the processing of the storage step to other predetermined data different from the predetermined data when the opening of the door is detected; Door opening detection method. A gaming machine comprising the door opening detection device according to claim 1.

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