JP5886098B2 - Medium processing apparatus and method for controlling medium processing apparatus - Google Patents

Description

  The present invention relates to a medium processing apparatus that processes an information recording medium on which magnetic data is recorded, and a control method for the medium processing apparatus.

  2. Description of the Related Art Conventionally, a medium processing apparatus including a magnetic head that reads magnetic data recorded on an information recording medium and records magnetic data on the information recording medium is known (see, for example, Patent Document 1). In the medium processing apparatus described in Patent Document 1, the magnetic head includes a recording coil for recording magnetic data and a reading coil for reading magnetic data. The recording coil is connected to a driver circuit, and the driver circuit is connected to the CPU. The reading coil is connected to an amplifier, the amplifier is connected to a waveform shaper, and the waveform shaper is connected to a CPU to which a driver circuit is connected.

  In the medium processing apparatus described in Patent Document 1, when a current is supplied to the recording coil, a current also flows through the reading coil, an output signal is output from the magnetic head, and a read signal is generated by the waveform shaper. The When the reading coil is disconnected, even if a current is supplied to the recording coil, no current flows through the reading coil and no read signal is generated. Based on a read signal generated when a current is supplied to the coil, it is possible to detect whether or not the reading coil is disconnected. In addition, when the recording coil is disconnected, a read signal is not generated even if a current supply command signal to the recording coil is sent from the CPU to the driver circuit. It is also possible to detect whether or not the recording coil is disconnected based on the read signal.

JP 2007-95118 A

  As described above, the medium processing apparatus described in Patent Document 1 detects whether or not the reading coil is disconnected based on the read signal generated when a current is supplied to the recording coil. Is possible. However, among the magnetic heads, there is also a read-only magnetic head that does not have a recording coil. In the case of a read-only magnetic head, whether or not the reading coil is disconnected by the method described in Patent Document 1. It cannot be detected.

  Accordingly, an object of the present invention is to provide a medium capable of detecting whether or not the reading coil of the magnetic head is disconnected with a simple configuration even if the magnetic head to be mounted is a read-only magnetic head. It is to provide a processing apparatus. It is another object of the present invention to detect whether or not the reading coil of the magnetic head is disconnected with a simple configuration even if the magnetic head mounted is a read-only magnetic head. It is an object of the present invention to provide a method for controlling a medium processing apparatus.

  In order to solve the above problems, a medium processing apparatus according to the present invention is a medium processing apparatus that processes an information recording medium on which magnetic data is recorded, and a magnetic head having a reading coil and an operation object that performs a predetermined operation. And a drive source that operates by electromagnetic force to operate the operation target, and a control unit that generates a detection signal based on an output signal from the magnetic head and controls the drive source. In the failure detection mode in which the drive source is driven to detect at least one of the disconnection of the coil and the failure of the drive source, when the reading coil is not disconnected and the drive source is not failed, The drive source is controlled such that a detection signal based on an output signal output from the magnetic head is generated by magnetic noise generated when the drive source is driven. .

  In the medium processing apparatus of the present invention, in the failure detection mode, the control unit is configured such that the reading coil of the magnetic head is not disconnected and the drive source for operating the operation target performing the predetermined operation is not failed. In this case, the drive source is controlled so that a detection signal based on the output signal output from the magnetic head is generated by the magnetic noise generated when the drive source is driven. Therefore, in the failure detection mode, when the reading coil is not disconnected, a detection signal is generated based on the magnetic noise generated when the drive source is driven, and when the reading coil is disconnected. Even if the drive source is driven, a detection signal is not generated. Therefore, according to the present invention, even if the magnetic head mounted on the medium processing apparatus is a read-only magnetic head that does not have a recording coil, the magnetic head can be driven with a simple configuration that drives a driving source that operates an operation target. It is possible to detect whether the reading coil of the head is disconnected.

  Further, in the present invention, when the drive source has failed, even if a drive command signal is sent from the control unit to the drive source in the failure detection mode, the drive source is not driven, so that no detection signal is generated. Therefore, in the present invention, it is possible to detect whether or not the drive source has failed with a simple configuration.

  In the present invention, the medium processing apparatus includes, for example, a shutter member that closes a medium passage through which an information recording medium passes as an operation target, and the drive source is a solenoid that operates the shutter member. In the present invention, the medium processing apparatus includes, for example, an IC contact block for exchanging data by contacting an information recording medium as an operation target, and the drive source is a solenoid that operates the IC contact block. . Furthermore, in the present invention, the medium processing apparatus includes, for example, a transport mechanism that transports an information recording medium, the transport mechanism includes a drive roller as an operation target, and the drive source is a motor that operates the drive roller. .

  In the present invention, the drive source is controlled by PWM (Pulse Width Modulation) control, and the control unit drives the drive source in a normal operation mode in which the drive source is driven to normally operate the operation target, and in a failure detection mode. It is preferable to switch the frequency of the PWM signal for controlling. With this configuration, in the normal operation mode, the drive source is driven by the frequency of the PWM signal in a range in which magnetic noise generated when the drive source is driven does not affect the detection signal generated by the control unit. (In other words, by driving the drive source with the frequency of the PWM signal in such a range that noise that affects the reading result of the magnetic data does not appear in the detection signal), even when the drive source is driven, information recording is performed. The magnetic data recorded on the medium can be appropriately read by the magnetic head.

  In the present invention, the medium processing apparatus includes a transport mechanism for transporting the information recording medium, and the frequency of the PWM signal in the failure detection mode is determined by the transport speed of the information recording medium by the transport mechanism and the magnetic data recorded on the information recording medium. It is preferably set based on the recording density. With this configuration, in the failure detection mode, if the reading coil is not disconnected and the drive source is not faulty, the detection signal is reliably obtained based on the magnetic noise generated when the drive source is driven. Can be generated.

  In the present invention, the control unit is connected to, for example, a host control unit that controls a host device in which the medium processing device is mounted. In this case, when the medium processing apparatus is turned on, the medium processing apparatus may be shifted to the failure detection mode so that at least one of the disconnection of the reading coil and the failure of the drive source may be detected. The medium processing apparatus may be shifted to the failure detection mode by a control command from the unit to detect at least one of disconnection of the reading coil and failure of the drive source.

  In order to solve the above problems, a control method for a medium processing apparatus according to the present invention is a control method for a medium processing apparatus that includes a magnetic head having a reading coil and processes an information recording medium on which magnetic data is recorded. In the failure detection mode in which the drive source is driven to detect at least one of the failure of the drive source that is driven by electromagnetic force to operate a predetermined operation target and the disconnection of the reading coil. When the operating coil is not disconnected and the drive source is not broken, a detection signal based on the output signal output from the magnetic head is generated by the magnetic noise generated when the drive source is driven. Further, the driving source is controlled.

  According to the control method of the medium processing apparatus of the present invention, in the failure detection mode, the driving is performed when the reading coil of the magnetic head is not disconnected and the drive source for operating the predetermined operation object is not broken. The drive source is controlled so that a detection signal based on the output signal output from the magnetic head is generated by magnetic noise generated when the source is driven. Therefore, in the failure detection mode, when the reading coil is not disconnected, a detection signal is generated based on the magnetic noise generated when the drive source is driven, and when the reading coil is disconnected. Even if the drive source is driven, a detection signal is not generated. Therefore, when the control method of the present invention is used, even if the magnetic head mounted on the medium processing apparatus is a read-only magnetic head that does not have a recording coil, a driving source for operating the operation target can be simply driven. With this configuration, it is possible to detect whether or not the reading coil of the magnetic head is disconnected. In the present invention, when the drive source is faulty, even if a drive command signal is sent to the drive source in the failure detection mode, the drive source is not driven, and therefore no detection signal is generated. Therefore, if the control method of the present invention is used, it is possible to detect whether or not the drive source has failed with a simple configuration.

  As described above, in the medium processing apparatus of the present invention, even if the mounted magnetic head is a read-only magnetic head, it is detected whether the reading coil of the magnetic head is disconnected with a simple configuration. It becomes possible. Further, by using the control method of the medium processing apparatus of the present invention, even if the magnetic head mounted on the medium processing apparatus is a read-only magnetic head, the reading coil of the magnetic head is disconnected with a simple configuration. It becomes possible to detect whether or not.

It is the schematic for demonstrating schematic structure of the medium processing apparatus concerning embodiment of this invention. FIG. 2 is a block diagram for explaining a schematic configuration of a control unit of the medium processing apparatus shown in FIG. 1. 3 is a flowchart illustrating an example of a control flow in a failure detection mode of the medium processing apparatus illustrated in FIG. 1.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Configuration of media processing device)
FIG. 1 is a schematic diagram for explaining a schematic configuration of a medium processing apparatus 1 according to an embodiment of the present invention. FIG. 2 is a block diagram for explaining a schematic configuration of the control unit 10 of the medium processing apparatus 1 shown in FIG.

  The medium processing apparatus 1 according to this embodiment is a card reader including a magnetic head 3 for reading magnetic data recorded on a card 2 that is an information recording medium. For example, a predetermined host apparatus such as an ATM (Automated Teller Machine) is used. Used on board. Inside the medium processing apparatus 1, a medium passage path (card conveyance path) 4 through which the card 2 passes is formed. In addition to the magnetic head 3, the medium processing apparatus 1 includes an IC contact block 5 for contacting the card 2 and exchanging data with the card 2, and a transport mechanism 6 for transporting the card 2, as shown in FIG. A shutter member 7 for closing the medium passage 4 and a pre-head (magnetic head) 8 for detecting that the card 2 is inserted into the medium processing apparatus 1 are provided.

  Further, as shown in FIG. 2, the medium processing apparatus 1 includes a control unit 10 that generates a detection signal based on an output signal output from the pre-head 8. The control unit 10 is connected to a host control unit 11 that controls a host device on which the medium processing apparatus 1 is mounted. In addition, the control unit 10 has a function of generating a detection signal based on an output signal output from the magnetic head 3. In FIG. 2, illustration of the magnetic head 3 connected to the control unit 10 is omitted.

  In this embodiment, the card 2 is conveyed and passed in the X direction shown in FIG. In this embodiment, the card 2 is inserted in the X1 direction shown in FIG. 1, and the card 2 is discharged in the X2 direction. In the following description, the X1 direction side is the “back (rear)” side, and the X2 direction side is the “front” side.

  The card 2 is, for example, a rectangular vinyl chloride card having a thickness of about 0.7 to 0.8 mm. On the back surface of the card 2, a magnetic stripe on which magnetic data is recorded is formed. The card 2 incorporates an IC chip, and a terminal portion connected to the IC chip is formed on the front surface of the card 2. The card 2 may include a communication antenna. The card 2 may be a PET (polyethylene terephthalate) card having a thickness of about 0.18 to 0.36 mm, or a paper card having a predetermined thickness.

  The magnetic head 3 is disposed inside the main body of the medium processing apparatus 1. Further, the magnetic head 3 is disposed so that the gap portion faces the medium passage 4. The magnetic head 3 of this embodiment is a magnetic head capable of recording and reading magnetic data, and includes a core, a reading coil (reading coil) wound around the core, and a recording coil (recording coil). Coil).

  The pre-head 8 is disposed inside a card insertion portion that constitutes a front end side portion of the medium processing apparatus 1. Further, the pre-head 8 is disposed so that the gap portion faces the medium passage 4. This pre-head 8 is a read-only magnetic head. That is, the pre-head 8 includes a core and a reading coil wound around the core, but does not include a recording coil.

  The IC contact block 5 includes a contact spring that contacts the terminal portion of the card 2. A solenoid 13 is connected to the IC contact block 5 via a predetermined power transmission mechanism. The IC contact block 5 is movable between the contact position where the contact spring comes into contact with the terminal portion of the card 2 by the power of the solenoid 13 and the contact spring contacts the terminal portion of the card 2 and the retreat position where the IC contact block 5 is retracted from the medium passage path 4. It has become. In this embodiment, the IC contact block 5 is biased toward the retracted position by a predetermined biasing member, and moves from the retracted position to the contact position when the solenoid 13 is driven.

  The transport mechanism 6 includes a drive roller 14 that contacts the card 2 and transports the card 2, and a pad roller 15 that is disposed to face the drive roller 14. A motor 16 is connected to the drive roller 14 via a predetermined power transmission mechanism. The driving roller 14 is rotated by the power of the motor 16 and conveys the card 2. The pad roller 15 is urged toward the driving roller 14.

  The shutter member 7 is disposed on the front end side of the medium processing apparatus 1. A solenoid 17 is connected to the shutter member 7 via a predetermined power transmission mechanism. The shutter member 7 is movable between a closed position for closing the medium passage 4 and an open position for opening the medium passage 4 by the power of the solenoid 17. In this embodiment, the shutter member 7 is urged toward the closed position by a predetermined urging member, and moves from the closed position to the open position when the solenoid 17 is driven.

  The solenoid 13 is disposed at an intermediate position of the medium processing apparatus 1 in the front-rear direction, the motor 16 is disposed on the back end side of the medium processing apparatus 1, and the solenoid 17 is disposed on the front end side of the medium processing apparatus 1. . In this embodiment, the solenoid 17 is arranged at a position closer to the pre-head 8 than the solenoid 13 and the motor 16.

  As shown in FIG. 2, the control unit 10 includes a detection circuit 20 that processes an output signal from the pre-head 8, a driver (drive circuit) 21 that drives the solenoid 13, and a driver (drive circuit) 22 that drives the motor 16. And a driver (driving circuit) 23 for driving the solenoid 17 and a CPU (Central Processing Unit) 24. The control unit 10 also includes a detection circuit (not shown) that processes an output signal from the magnetic head 3. In addition to the function of generating the detection signal based on the output signal output from the pre-head 8 and the function of generating the detection signal based on the output signal output from the magnetic head 3, the control unit 10 includes the solenoids 13, 17. The motor 16 is also controlled.

  The detection circuit 20 includes an amplifier circuit, a filter circuit, a waveform shaping circuit, and the like. The detection circuit 20 processes the sine wave output signal output from the pre-head 8 to generate a rectangular wave detection signal. The detection signal generated by the detection circuit 20 is input to the CPU 24, and the CPU 24 performs a predetermined process.

  The drivers 21 to 23 drive the solenoids 13 and 17 and the motor 16 based on a control signal from the CPU 24. In this embodiment, the solenoids 13 and 17 and the motor 16 are controlled by PWM control, and PWM signals for controlling the solenoids 13 and 17 and the motor 16 are input from the CPU 24 to the drivers 21 to 23.

  The frequency of the PWM signal input to the driver 21 is higher or lower than the frequency of the band extracted by the filter circuit constituting the detection circuit 20, and is caused by magnetic noise generated from the solenoid 13 when the solenoid 13 is driven. Even if the output signal is output from the pre-head 8, the detection circuit 20 does not generate a detection signal. Similarly, the frequency of the PWM signal input to the driver 22 is higher or lower than the frequency of the band extracted by the filter circuit constituting the detection circuit 20, and is generated from the motor 16 when the motor 16 is driven. Even if an output signal is output from the pre-head 8 due to magnetic noise, the detection signal is not generated by the detection circuit 20.

  The frequency of the band extracted by the filter circuit constituting the detection circuit 20 is the frequency of the output signal output from the magnetic head 3 or pre-head 8 when the magnetic data of the card 2 is read by the magnetic head 3 or pre-head 8. . This frequency is determined based on the conveyance speed of the card 2 by the conveyance mechanism 6 and the recording density of the magnetic data recorded on the card 2. For example, when the conveyance speed of the card 2 is 190 mm / sec and the recording density of the card 2 is 210 BPI (Bit Per Inch), if the magnetic data recorded on the card 2 is “0”, this frequency is If the magnetic data recorded on the card 2 is “1”, this frequency is about 1.6 kHz. Therefore, in this embodiment, for example, a PWM signal having a frequency lower than about 0.8 kHz or a frequency higher than about 1.6 kHz is input to the driver 21 and the driver 22.

  Here, in this embodiment, the normal operation mode in which the solenoid 17 is driven to open the shutter member 7 with the taking-in operation of the card 2 into the medium processing apparatus 1, the disconnection of the reading coil of the pre-head 8, and the solenoid The solenoid 17 is driven in two modes: a failure detection mode in which the solenoid 17 is driven to detect at least one of the 17 failures. In the failure detection mode, the solenoid 17 is driven in a state where the card 2 is not taken into the medium processing apparatus 1.

  In the normal operation mode, the frequency of the PWM signal input to the driver 23 is higher or lower than the frequency of the band extracted by the filter circuit of the detection circuit 20, and is generated from the solenoid 17 when the solenoid 17 is driven. Even if an output signal is output from the pre-head 8 due to magnetic noise, the detection signal is not generated by the detection circuit 20. For example, in the normal operation mode, a PWM signal having a frequency lower than about 0.8 kHz or a frequency higher than about 1.6 kHz is input to the driver 23.

  On the other hand, in the failure detection mode, the frequency of the PWM signal input to the driver 23 is the frequency of the band taken out by the filter circuit of the detection circuit 20. When an output signal is output from 8, the detection circuit 20 generates a detection signal and outputs it. That is, in the failure detection mode, when the reading coil of the pre-head 8 is not disconnected and the solenoid 17 is not broken, the pre-head 8 outputs the magnetic noise generated from the solenoid 17 when the solenoid 17 is driven. A signal is output, and a detection signal based on the output signal is generated by the detection circuit 20. For example, in the failure detection mode, a PWM signal having a frequency including about 0.8 kHz or a frequency including about 1.6 kHz is input to the driver 23. That is, the frequency of the PWM signal input to the driver 23 in the failure detection mode is recorded on the card 2 and the conveyance speed of the card 2 by the conveyance mechanism 6 so as to be the frequency of the band extracted by the filter circuit of the detection circuit 20. It is preset based on the recording density of the magnetic data.

  As described above, the CPU 24 and the driver 23 are affected by magnetic noise generated when the solenoid 17 is driven when the reading coil of the pre-head 8 is not disconnected and the solenoid 17 is not broken in the failure detection mode. The solenoid 17 is controlled so that a detection signal based on the output signal output from the pre-head 8 is generated. Specifically, the CPU 24 switches the frequency of the PWM signal output toward the driver 23 between the normal operation mode and the failure detection mode.

  The shutter member 7 of this embodiment is an operation target that performs a predetermined operation, and the solenoid 17 is a drive source that operates the shutter member 7 that is an operation target by being driven by electromagnetic force.

(Control method of media processing apparatus in failure detection mode)
FIG. 3 is a flowchart showing an example of a control flow in the failure detection mode of the medium processing apparatus 1 shown in FIG.

  The medium processing apparatus 1 shifts to the failure detection mode when the medium processing apparatus 1 is turned on or by a control command input from the host control unit 11 to the control unit 10. Note that when the medium processing apparatus 1 shifts to the failure detection mode, the card 2 is not taken into the medium processing apparatus 1.

  When the medium processing apparatus 1 shifts to the failure detection mode, the CPU 24 outputs a PWM signal in the frequency band extracted by the filter circuit of the detection circuit 20 to the driver 23 (step S1). Thereafter, the CPU 24 determines whether or not a detection signal is input from the detection circuit 20 (step S2).

  When the reading coil of the pre-head 8 is not disconnected and the solenoid 17 is not broken, detection based on an output signal output from the pre-head 8 due to magnetic noise generated from the solenoid 17 when the solenoid 17 is driven A signal is generated by the detection circuit 20, and the detection signal is input from the detection circuit 20 to the CPU 24 ("Yes" in step S2). Therefore, in this case, the control unit 10 sends a normal response signal to the upper control unit 11 that the reading coil of the pre-head 8 is not disconnected and the solenoid 17 is not broken (step S3). .

  On the other hand, when at least one of the disconnection of the reading coil of the pre-head 8 and the failure of the solenoid 17 has occurred, the output signal is not output from the pre-head 8, so that the detection circuit 20 generates a detection signal. Therefore, no detection signal is input from the detection circuit 20 to the CPU 24 (“No” in step S2). Therefore, in this case, the control unit 10 sends an abnormal response signal to the host control unit 11 that at least one of the disconnection of the reading coil of the pre-head 8 and the failure of the solenoid 17 has occurred ( Step S4).

(Main effects of this form)
As described above, in the present embodiment, in the failure detection mode, when the reading coil of the pre-head 8 is not disconnected and the solenoid 17 is not broken, it is caused by magnetic noise generated when the solenoid 17 is driven. An output signal is output from the pre-head 8, and a detection signal based on the output signal is generated by the detection circuit 20. On the other hand, in the failure detection mode, when at least one of the disconnection of the reading coil of the pre-head 8 and the failure of the solenoid 17 has occurred, the output signal is not output from the pre-head 8 and the detection circuit 20 No detection signal is generated. Therefore, in this embodiment, even if the pre-head 8 is a read-only magnetic head that does not have a recording coil, the reading coil of the pre-head 8 is disconnected with a simple configuration in which the solenoid 17 that operates the shutter member 7 is driven. Can be detected. In this embodiment, it is possible to detect a failure of the solenoid 17 with a simple configuration.

  In this embodiment, the frequency of the PWM signal input to the driver 23 in the failure detection mode is set based on the conveyance speed of the card 2 by the conveyance mechanism 6 and the recording density of the magnetic data recorded on the card 2, The frequency of the band extracted by the filter circuit of the detection circuit 20 is obtained. For this reason, in the present embodiment, in the failure detection mode, if the reading coil of the pre-head 8 is not disconnected and the solenoid 17 is not broken, detection is performed based on magnetic noise generated when the solenoid 17 is driven. The circuit 20 can reliably generate the detection signal.

  In this embodiment, in the normal operation mode, the frequency of the PWM signal input to the driver 23 is higher or lower than the frequency of the band extracted by the filter circuit of the detection circuit 20. Therefore, in the normal operation mode, even if the pre-head 8 detects whether or not the card 2 is inserted while the solenoid 17 is driven, it can be appropriately detected whether or not the card 2 is inserted. It becomes possible. Further, even when the magnetic head 3 reads the magnetic data of the card 2 while the solenoid 17 is driven in the normal operation mode, the magnetic data can be read appropriately.

(Other embodiments)
The above-described embodiment is an example of a preferred embodiment of the present invention, but is not limited to this, and various modifications can be made without departing from the scope of the present invention.

  In the embodiment described above, the CPU 24 switches the frequency of the PWM signal output toward the driver 23 between the normal operation mode and the failure detection mode. In addition, for example, the frequency of the PWM signal in the failure detection mode is matched with the frequency of the PWM signal in the normal operation mode, and the reading coil of the pre-head 8 is not disconnected in the failure detection mode, and the solenoid 17 In the case where there is no failure, the detection circuit 20 may process the output signal so that a detection signal based on the output signal output from the pre-head 8 is generated by the magnetic noise generated when the solenoid 17 is driven. For example, in the normal operation mode and the failure detection mode, a filter circuit is provided in the detection circuit 20 so that the frequency of the PWM signal input to the driver 23 is the frequency of the band extracted by the filter circuit of the detection circuit 20. A detection signal may be generated by the detection circuit 20 based on the output signal.

  In the above-described form, the solenoid 17 is driven in two modes of the normal operation mode and the failure detection mode, and the magnetic noise generated when the solenoid 17 is driven in the failure detection mode is used to read the prehead 8. It is possible to detect the disconnection of the coil. In addition to this, for example, a normal operation mode in which the solenoid 13 is driven to move the IC contact block 5 from the retracted position to the contact position so that the contact spring of the IC contact block 5 contacts the terminal portion of the card 2; The solenoid 13 is driven in two modes: a failure detection mode in which the solenoid 13 is driven to detect at least one of the disconnection of the reading coil 8 and the failure of the solenoid 13. It is possible to detect the disconnection of the reading coil of the pre-head 8 by using magnetic noise generated at the time of driving 13. In this case, in the failure detection mode, the solenoid 13 is driven in a state where the card 2 is not taken into the medium processing apparatus 1.

  In this case, in the normal operation mode, the frequency of the PWM signal input to the driver 21 is higher or lower than the frequency of the band extracted by the filter circuit of the detection circuit 20. On the other hand, in the failure detection mode, the frequency of the PWM signal input to the driver 21 is the frequency of the band extracted by the filter circuit of the detection circuit 20. In this case, the IC contact block 5 is an operation target that performs a predetermined operation, and the solenoid 13 is a drive source that is driven by electromagnetic force to operate the IC contact block 5 that is the operation target. .

  In order to detect at least one of a normal operation mode in which the motor 16 is driven to transport the card 2 taken into the medium processing apparatus 1, a disconnection of the reading coil of the pre-head 8, and a failure of the motor 16. The motor 16 is driven in two modes, ie, a failure detection mode for driving the motor 16, and magnetic noise generated when the motor 16 is driven is used in the failure detection mode, so that the reading coil of the pre-head 8 is disconnected. It may be possible to detect this. In this case, in the failure detection mode, the motor 16 is driven in a state where the card 2 is not taken into the medium processing apparatus 1.

  In this case, in the normal operation mode, the frequency of the PWM signal input to the driver 22 is higher or lower than the frequency of the band extracted by the filter circuit of the detection circuit 20. On the other hand, in the failure detection mode, the frequency of the PWM signal input to the driver 22 is the frequency of the band extracted by the filter circuit of the detection circuit 20. In this case, since the frequency of the PWM signal input to the driver 22 is higher or lower than the frequency of the band extracted by the filter circuit of the detection circuit 20 in the normal operation mode, the motor 16 is driven. In this state, even if the pre-head 8 detects whether or not the card 2 has been inserted, it can be appropriately detected whether or not the card 2 has been inserted. Further, in the normal operation mode, the frequency of the PWM signal input to the driver 22 is higher or lower than the frequency of the band taken out by the filter circuit of the detection circuit 20, so that the motor 16 is driven. Even if the magnetic head 3 reads the magnetic data of the card 2 in the state, the magnetic data can be read appropriately. In this case, the drive roller 14 is an operation object that performs a predetermined operation, and the motor 16 is a drive source that is driven by electromagnetic force to operate the drive roller 14 that is an operation object.

  In the embodiment described above, the solenoids 13 and 17 and the motor 16 are controlled by PWM control. In addition to this, for example, the solenoids 13 and 17 and the motor 16 may be controlled by voltage control or the like in which a voltage of a predetermined value is constantly applied during driving. In this case, for example, if the solenoids 13, 17 or the motor 16 are repeatedly turned on and off at the frequency of the band taken out by the filter circuit of the detection circuit 20 in the failure detection mode, this occurs when the solenoids 13, 17 or the motor 16 is driven. The disconnection of the reading coil of the pre-head 8 can be detected using the magnetic noise.

  In the embodiment described above, it is possible to detect disconnection of the reading coil of the pre-head 8 by using magnetic noise generated when the solenoid 17 is driven. In addition to this, for example, it may be possible to detect disconnection of the reading coil of the magnetic head 3 using magnetic noise generated when the solenoid 17 is driven. In this case, it may be possible to detect disconnection of the reading coil of the magnetic head 3 using magnetic noise generated when the solenoid 13 or the motor 16 is driven. In the above-described embodiment, the solenoid 13 is disposed at a position closer to the magnetic head 3 than the solenoid 17 and the motor 16, and therefore reading of the magnetic head 3 is performed using magnetic noise generated when the solenoid 13 is driven. It is preferable that it is possible to detect disconnection of the coil for use.

  In the above-described embodiment, the medium processing apparatus 1 is a card transport type card reader including the transport mechanism 6, but the medium processing apparatus 1 to which the configuration of the present invention is applied allows the user to move the card 2 manually. A manual card reader for reading magnetic data may be used.

1 Medium processing device 2 Card (information recording medium)
3 Magnetic head 4 Medium passage 5 IC contact block (object to be operated)
6 Transport mechanism 7 Shutter member (operation object)
8 Pre-head (magnetic head)
10 Control unit 11 Host control unit 13 Solenoid (drive source)
14 Drive roller (object to be operated)
16 Motor (drive source)
17 Solenoid (drive source)

Claims (8)

In a medium processing apparatus for processing an information recording medium on which magnetic data is recorded,
A detection signal is generated based on an output signal from the magnetic head, a magnetic head having a reading coil, an operation object that performs a predetermined operation, a drive source that is driven by electromagnetic force to operate the operation object. And a control unit for controlling the drive source,
In the failure detection mode in which the control unit drives the drive source to detect at least one of the disconnection of the reading coil and the failure of the drive source, the reading coil is not disconnected, and The drive source is configured to generate the detection signal based on the output signal output from the magnetic head by magnetic noise generated when the drive source is driven when the drive source has not failed. A medium processing apparatus for controlling the above. A shutter member that closes a medium passage through which the information recording medium passes as the operation object;
The medium processing apparatus according to claim 1, wherein the driving source is a solenoid that operates the shutter member. As the operation object, an IC contact block for exchanging data by contacting the information recording medium,
The medium processing apparatus according to claim 1, wherein the driving source is a solenoid that operates the IC contact block. A transport mechanism for transporting the information recording medium;
The transport mechanism includes a drive roller as the operation object,
The medium processing apparatus according to claim 1, wherein the driving source is a motor that operates the driving roller. The drive source is controlled by PWM (Pulse Width Modulation) control,
The control unit switches a frequency of a PWM signal for controlling the drive source between a normal operation mode in which the drive source is driven to normally operate the operation target and the failure detection mode. The medium processing apparatus according to any one of claims 1 to 4. A transport mechanism for transporting the information recording medium;
The frequency of the PWM signal in the failure detection mode is set based on a conveyance speed of the information recording medium by the conveyance mechanism and a recording density of the magnetic data recorded on the information recording medium. The medium processing apparatus according to claim 5.   The medium processing apparatus according to claim 1, wherein the control unit is connected to a host control unit that controls a host apparatus in which the medium processing apparatus is mounted. A control method of a medium processing apparatus that includes a magnetic head having a reading coil and processes an information recording medium on which magnetic data is recorded,
In the failure detection mode in which the drive source is driven to detect at least one of a failure of a drive source that is driven by electromagnetic force to operate a predetermined operation object and a disconnection of the reading coil, the reading is performed. A detection signal based on the output signal output from the magnetic head is generated by magnetic noise generated when the drive source is driven when the coil for operation is not disconnected and the drive source is not broken. As described above, a control method for a medium processing apparatus, wherein the drive source is controlled.

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