JPH11306295A - Electric equipment and recording medium recording program controlling electric equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a user to recognize abnormal mounting by feeding power for mount check to an electrode of a mounted matter, deciding whether or not to be a normal mounted matter based on detection electricity quantity and reporting it at the time of abnormality decision. SOLUTION: When both a mount detection switch 18 and a lock detection switch 19 are turned on, a CPU 11 transmits a control signal to a 2nd power supply 14b as a power supply for mount check and a control terminal (e) of a power supply control part 15. A current outputted from the supply 14b is caused to flow from a power supply output terminal (c) of the part 15 to an electrode for power supply input of an IC card 50 through a feeding terminal of a card holder 16. When a conductive foreign matter such as a metallic plate is attached to the holder 16 mistakenly, short-circuiting takes place and the voltage level of a voltage check terminal (d) becomes lower than the prescribed threshold. The CPU 11 cuts off an output of a 2nd power supply 14b and also transmits a message signal about conductive foreign matter mounting to an alarm 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detachable object such as an electronic card which can use information and functions incorporated in an IC card, for example, an electronic organizer and various PDAs (Personal Digital Assistants). The present invention relates to a portable information terminal such as a mobile tool, a portable communication terminal, and other portable electronic devices, an information processing device such as a stationary personal computer and a word processor, and an electric device such as a communication device.

[0002]

2. Description of the Related Art FIG. 12 is a block diagram showing a schematic configuration of a portable communication terminal and an IC card according to the prior art. In the figure, reference numeral 70 denotes a device body (terminal body),
Reference numeral 71 denotes a CPU that controls the overall operation of the device main body 70; 72, a memory including a ROM that stores a program for the control and a RAM that assists the control and stores data; 73, an interface to the IC card 80 , 74 are a card holder, 75 is a lock mechanism, 76 is a mounting detection switch, 77 is a lock detection switch, and 78 is a communication interface. 80 is an IC card,
81 is a CPU, 82 is a memory composed of a ROM and a RAM,
83 is an interface.

When the IC card 80 is inserted into the card holder 74 of the device body 70, the connector connected to the interface 83 of the device body 70 is electrically and mechanically connected to the connector connected to the interface 83 of the IC card 80. You. When connected normally, the mounting detection switch 7
6 turns ON. IC card 80 inserted normally
The lock mechanism 75 operates to maintain the mounted state of the IC card 80 and prevent the IC card 80 from slipping out. When locked normally, the lock detection switch 77 is turned ON. CPU
Reference numeral 71 designates I when a detection signal from the attachment detection switch 76 and a detection signal from the lock detection switch 77 are input.
The data transfer operation with the C card 80 is started. Data transmission and reception are performed via interfaces 73 and 83 connected to each other. The CPU 71 of the device main body 70
The command read out from the interface 2 is sent from the interfaces 73 and 83 to the CPU 81 of the IC card 80. CPU81
Accesses the memory 82 in accordance with the instruction, reads out necessary programs and data, and sends them to the device main body 70. C
When receiving a program or data, the PU 71 loads the program or data into the memory 72 and uses it for arithmetic processing. The data transferred from the CPU 71 of the device body 70 is stored in the IC card 8.
It is also possible to write to the memory 82 of 0. CPU7
1 sends out programs and data including those received from the IC card 80 to the outside via the communication interface 78 as needed. As described above, this system is described as having a card reader / writer function.

[0004]

The above-mentioned prior art has the following problems. It does not have the function of discriminating whether the card holder 74 is a legitimate IC card or not. If a conductive foreign object such as a metal plate of the same size and shape is inserted, a short circuit may occur. The CPU 71 and other circuit components may be damaged or broken due to the overcurrent. In addition, there is no means for discriminating that a regular IC card is inserted when it is inserted upside down, so that a user may not be aware of the possibility that an abnormal operation may be caused. is there.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and enables a user to recognize when a mounting situation is abnormal, and to damage or break a circuit component caused by mounting a foreign object.・ The purpose is to prevent abnormal operation.

[0006]

According to the first aspect of the present invention, there is provided an electric apparatus capable of utilizing information and functions contained in an object to be detachably mounted on the electric apparatus, When detecting the mounting of the object to be mounted, a power supply for mounting check is supplied to a predetermined electrode of the object to be mounted, and it is determined whether or not the object is a regular object based on the detected amount of electricity. It is configured to notify. If a conductive foreign object is inserted by mistake, the current from the power supply for mounting check becomes an overcurrent and flows into the conductive foreign object.
The determination based on the detected amount of electricity becomes abnormal, and the abnormality is notified to the user.

According to a second aspect of the present invention, there is provided an electric device comprising:
In the first aspect, when the abnormality is determined, the switching to the original driving power supply state is prohibited, and when the abnormality is determined, the driving power supply state is switched to the original driving power supply state. When it is determined that an abnormality has occurred due to the insertion of the conductive foreign matter, power for driving is not supplied, so that damage, failure, abnormal operation, and the like of the CPU and other circuit components are prevented.

According to a third aspect of the present invention, there is provided an electric device comprising:
In Claim 1 or Claim 2, the supply of the power for mounting check is started based on the detection signal of the mounting of the mounted object, the detection signal of the mounting lock, or the both detection signals. . In the mounted state of the mounted object, the above-described required processing is started by turning on the main power supply or mounting the mounted object during idling.

According to a fourth aspect of the present invention, there is provided an electric device comprising:
In the first aspect, the power source for checking the mounting and the power source for the original driving are separated. Then, based on the detection signal of the mounting of the mounting object, the detection signal of the mounting lock, or both of the detection signals, the supply of the power for the mounting check to the predetermined electrode of the mounting object is started, and the normalization is performed based on the detected electric quantity. It is configured to judge whether or not the object is a mounted object, to notify when abnormality is determined, and to prohibit switching to the driving power supply state, and to switch to driving power supply state when normal. If a conductive foreign object is inserted, notify the user of the abnormality and
U prevents damage, failure, abnormal operation, etc. of other circuit components.

[0010] The electric device according to claim 5 according to the present invention comprises:
In any one of the first to fourth aspects, a power supply control unit is inserted between a power supply terminal for supplying power to a predetermined electrode of the object to be mounted, a power supply for mounting check, and a power supply for original driving. is there. A power supply output terminal for the power supply terminal of the power supply control unit is commonly connected to a driving power supply and a check terminal, and an overcurrent limiting element and a high impedance are provided between the common connection point and the mounting check power supply. An element that can be switched between a state and an open state is interposed, and the latter element is configured to be in a conductive state when the attachment is determined, and is switched to a high impedance state or the open state when the state is normal (see FIG. 2). At the time of mounting determination of the object to be mounted, the latter element is turned on and the power for mounting check is supplied through a common connection point to perform mounting determination.When it is determined that the mounting is normal, the latter element is set to a high impedance state or an open state. By switching, the original drive power is supplied through the common connection point, but the current is prevented from flowing back from the drive power to the mounting check power.

According to a sixth aspect of the present invention, there is provided an electric device comprising:
In any one of the first to fourth aspects, a power supply control unit is interposed between a power supply terminal for supplying power to a predetermined electrode of the object to be mounted, a power supply for mounting check, and a power supply for original driving. A power supply output terminal for the power supply terminal of the power supply control unit is commonly connected to the drive power supply and the check terminal, and an overcurrent limiting element is provided between the common connection point and the mounting check power supply. A diode for preventing backflow is interposed (see FIG. 4). Since a diode is used to prevent a reverse current from flowing from the driving power supply to the mounting check power supply, the configuration is simple.

According to a seventh aspect of the present invention, there is provided an electric device comprising:
In any one of the first to sixth aspects, a power supply control unit is interposed between a power supply terminal for supplying power to a predetermined electrode of an object to be mounted, a power supply for mounting check, and a power supply for original driving. A power supply output terminal for the power supply terminal of the power supply control unit is connected to the drive power supply and a check terminal via a changeover switch, and an overcurrent limiting circuit is provided between the changeover switch and the mounting check power supply. An element is interposed (see FIGS. 6 and 10). At the time of the mounting check, the overcurrent caused by the short circuit of the conductive foreign matter is prevented from flowing, and at the time of the original driving, the current is prevented from flowing backward from the driving power supply to the mounting check power supply.

According to an eighth aspect of the present invention, there is provided an electric device comprising:
In any one of the first to third aspects, a changeover switch and an overcurrent limiting element are added to the common power supply, so that a power supply for mounting check and a power supply for original driving can be generated. This is the configuration (see FIG. 11). The circuit configuration is simplified.

According to a ninth aspect of the present invention, there is provided an electric device comprising:
In any one of the first to eighth aspects, the apparatus further includes means for determining the mounting posture of the object to be mounted, and is configured to notify when the mounting posture is determined to be abnormal. If a regular object is inserted upside down, the user is notified of the fact.

According to a tenth aspect of the present invention, there is provided the electrical apparatus according to any one of the first to ninth aspects, wherein the mounted object stores data or a program and is at least readable or readable / unreadable. The recording medium is a writable recording medium. Information and functions of electronic cards are effectively used.

Claim 11 according to the present invention is Claim 1
The present invention relates to a recording medium recording a program for controlling an electric device according to any one of claims 1 to 10,
A procedure for checking the mounting of the object to be mounted, a procedure for supplying power for the mounting check to the object to be mounted, a procedure for determining whether or not the object is a legitimate object based on the detected amount of electricity; Computer-readable recording medium for a computer-readable electric device that stores a program including a procedure for switching to a power source for supplying to an object to be mounted and starting a predetermined process, and a procedure for performing notification when an abnormality is determined. By installing the program recorded on the recording medium into the microcomputer of the electric device, the above-described functions are exhibited.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of an electric apparatus according to the present invention. In the following embodiments, a portable communication terminal will be described as an example of an electric device, and a reader / writer type IC card will be described as an example of an object to be mounted.

[First Embodiment] FIG. 1 is a block diagram showing a configuration of an IC card detachable portable communication terminal and an IC card according to a first embodiment. The device main body 10 of the mobile communication terminal includes the following elements. CPU (Central Processing Unit) that controls the entire device body 10
And a ROM (Read Only Memory) storing a program for control / calculation by the CPU 11 and a RAM (Random Access Memory) as a working memory for assisting control / calculation and storing data. A memory 12, an interface 13 for the IC card 50, a first power supply 14a as an original driving power supply of the IC card 50, and a mounting check for an output voltage level set lower than the first power supply 14a. A second power supply 14b as a power supply, a power supply control unit 15, which will be described in detail later, a card holder 16 for holding the IC card 50 inserted and removed, and an unexpected Mechanism 17 for preventing the card holder 16 from slipping out,
A mounting detection switch 18 for detecting normal mounting of the C card 50, a lock detecting switch 19 for detecting that the lock mechanism 17 is operating normally with respect to the mounted IC card 50, and for notifying an abnormality. Light emitting diodes
An alarm device 20 including a lamp such as a lamp, a buzzer, and the like, a communication interface 21 for performing communication with the outside, and the like are connected. First power supply 14a and second power supply 1
4b is a CPU 1 for ON / OFF control of its output.
1 is performed.

FIG. 2 shows an example of a specific circuit configuration of the power supply control section 15 (corresponding to claim 5). An input terminal of the buffer 22 as a high impedance means is connected to a terminal b connected to the second power supply 14b, and a control terminal of the buffer 22 is connected to the CPU 11 via a control terminal e.
The control line for the control terminal e from the CPU 11 is common to the control line for turning on / off the second power supply 14b. One end of a resistor 23 as an overcurrent prevention means (current control means) is connected to the output terminal of the buffer 22. The other end of the resistor 23 and the terminal a of the first power supply 14a
The common connection point A between the power supply output terminal c and the voltage check terminal d is connected to the power output terminal c.
6 to a power supply terminal (not shown; see reference numeral 27 in FIG. 7) to the IC card 50 through a voltage check terminal d.
Each is connected to the input port of PU11. The line connecting the terminal f and the IC card 50 and the terminal g
The line connecting the CPU and the CPU 11 may not be the one in the first embodiment. Power output terminals c and f and IC card 5
Although lines connecting 0 are shown outside the device main body 10, this is of course for the sake of illustration, and these lines are actually wired inside the device main body 10. The power supply terminal at the end faces the card holder 16. The lock mechanism 17, the mounting detection switch 18 and the lock detection switch 19 in the card holder 16 are used.
For the positional relationship between the power supply terminal 27 and the power supply terminal 27, refer to FIG. The specific structure of the lock mechanism 17 is irrelevant to the gist of the present invention, and various known structures can be adopted.

The IC card 50 includes a CPU 51 and a ROM.
-It is composed of a memory 52 composed of a RAM and an interface 53.

Next, the device main body 1 configured as described above
0 will be described with reference to the flowchart shown in FIG. When the IC card 50 is inserted into the card holder 16 and is normally mounted, the interface 53 of the IC card 50 is electrically and mechanically connected to the interface 13 of the device body 10 via a connector, and the mounting is detected. The switch 18 turns ON. The mounted IC card 50
When the lock mechanism 17 operates normally and holds the IC card 50 in a locked state, the lock detection switch 19 is turned off.
It becomes N. The card holder 16 of the IC card 50
May be mounted before or after powering on the main power supply. The operation of the CPU 11 is started by turning on a main power supply (not shown) in the device body 10.

In step S1, the CPU 11 waits for the mounting detection switch 18 to be turned on and proceeds to step S2, and waits for the lock detection switch 19 to be turned on and proceeds to step S3. If the attachment detection switch 18 or the lock detection switch 19 is kept OFF, the user does not proceed to the process of data transfer with the IC card after step S8, so the user notices that. The cause is due to forgetting to mount the IC card 50 or mounting failure, but in any case, the IC card 50 is mounted correctly in principle.

When the mounting detection switch 18 and the lock detection switch 19 are both turned on and the process proceeds to step S3,
The CPU 11 sends control signals to the control terminal of the second power supply 14b and the control terminal e of the power supply control unit 15, and the second power supply 1
4b is switched to the output state, and the buffer 22 in the power supply control unit 15 is switched to the conductive state. As a result, the current output from the second power supply 14b passes through the buffer 22 and the resistor 23 in the power supply control unit 15, and from the power supply output terminal c to the power supply input electrode of the IC card 50 via the power supply terminal of the card holder 16. Flow into

If the regular IC card 50 is mounted on the card holder 16, the IC card 50
From the power output terminal c to the IC
The current flowing into the card 50 is relatively small, and as a result, the voltage level Vd of the voltage check terminal d becomes higher than a predetermined threshold value Vth serving as a criterion for determining conductive foreign matter.

If a conductive foreign substance such as a metal plate is mistakenly mounted, a short circuit occurs, and the voltage level Vd of the voltage check terminal d becomes lower than the threshold value Vth.
Even if excessive current flows, the overcurrent is prevented by the resistor 23, so that the buffer 22 in the conductive state is protected.

Utilizing this, the CPU 11 checks the voltage level Vd of the voltage check terminal d in step S4, and determines whether the voltage level Vd is higher than the threshold value Vth. When Vd> Vth, it means that the regular IC card 50 is mounted. In this case, the process proceeds to step S5, where the output of the second power supply 14b which has become unnecessary because it has been checked is cut off. The buffer 22 is turned off to be in a high impedance state.

Next, in step S6, the CPU 11
Sends a control signal to the control terminal of the first power supply 14a and switches the first power supply 14a to an output state. At this time, since the buffer 22 is already in the high impedance state, the current is prevented from flowing backward from the first power supply 14a to the second power supply 14b.

In step S7, a message signal of normal mounting of the IC card is sent to the alarm 20 to notify the user that the normal IC card 50 is mounted by a predetermined operation of the alarm 20. Next, the process proceeds to step S8 to start a process of data transfer with the IC card.

If Vd.ltoreq.Vth in step S4, the process proceeds to step S9, in which the output of the second power supply 14b, which has become unnecessary because it has been checked in the same manner as described above, is cut off, and the buffer 22 is turned off to be in a high impedance state. In step S10, a message signal for mounting the conductive foreign matter is sent to the alarm 20 to notify the user that the conductive foreign matter is mounted by a predetermined operation of the alarm 20.

After step S10, the process returns to step S1. In this case, since it is prohibited to proceed to the process of data transfer with the IC card after step S8, the device body 1
This prevents the CPU 11 and other circuit configurations from being damaged or destroyed. The user notified of the mounting of the conductive foreign object pulls out the conductive foreign object from the card holder 16 and mounts the regular IC card 50.

In the process of exchanging data with the IC card 50, data and the like taken into the memory 12 of the device main body 10 via the interfaces 53 and 13 can be sent out through the communication interface 21. It should be noted that, even during the processing of data transfer with the IC card after step S8, the same routine for checking for a mounting abnormality as shown in FIG. 3 is repeatedly executed.

[Second Embodiment] A second embodiment relates to a modification of the power supply control unit 15. FIG. 4 shows a specific circuit configuration of the power supply control unit 15 in the second embodiment (corresponding to claim 6). An anode of a diode 24 for preventing backflow is connected to a terminal b connected to a second power supply 14b as a power supply for checking mounting, and a resistor 25 as overcurrent prevention means is connected to a cathode of the diode 24. . There is no connection with the control terminal e. Others are the same as the first embodiment (FIG. 2). The output voltage level of the second power supply 14b is set to a level in which the sum of the output voltage level and the voltage drop of the diode 24 is equal to or lower than the output voltage level of the first power supply 14a.

Next, the power supply control unit 15 having the configuration of FIG.
The operation of the device body 10 connected to the device will be described with reference to the flowchart of FIG. The operation of the CPU 11
Start by powering on the main power supply at. The CPU 11 waits for the mounting detection switch 18 to be turned on in step S21, and proceeds to step S22, and waits for the lock detection switch 19 to be turned on, and proceeds to step S23.

In step S23, the CPU 11 sends a control signal to a control terminal of the second power supply 14b as a power supply for checking mounting, and switches the second power supply 14b to an output state. As a result, the current output from the second power supply 14b is applied to the diode 24 and the resistor 2 of the power supply control unit 15.
5, the power flows from the power output terminal c to the power input electrode of the IC card 50 via the power supply terminal of the card holder 16.

In step S24, the CPU 11 checks the voltage level Vd of the voltage check terminal d, and determines whether the voltage level Vd is higher than a predetermined threshold value Vth which is a reference for determining a conductive foreign substance. When Vd> Vth, it means that the regular IC card 50 is mounted. In this case, the process proceeds to step S25, in which the output of the second power supply 14b, which has become unnecessary because it has been checked, is cut off.

Next, in step S26, the CPU 1
1 sends a control signal to a control terminal of a first power supply 14a as an original drive power supply, and switches the first power supply 14a to an output state. The presence of the diode 24 prevents current from flowing backward from the first power supply 14a to the second power supply 14b.

In step S27, the IC 20
A message signal indicating that the card has been properly mounted is sent out,
The user is notified that the proper IC card 50 is mounted by the predetermined operation. Next, the process proceeds to step S28 to start processing of data transfer with the IC card.

If Vd ≦ Vth in step S24, it means that a short circuit has occurred because a conductive foreign substance such as a metal plate is mounted. Excess current due to the short circuit is reduced by the resistor 25 and the diode 24 is protected. In this case, the process proceeds to step S29, in which the output of the second power supply 14b, which has become unnecessary because it has been checked in the same manner as described above, is cut off. The user is informed that the device 20 is attached by a predetermined operation of the container 20 by a conductive foreign matter.

After step S30, the process returns to step S21. In this case, since it is prohibited to proceed to the process of transferring data with the IC card after step S28, it is possible to avoid damaging or destroying the CPU 11 of the device main body 10 and other circuit configurations. The user notified of the mounting of the conductive foreign object pulls out the conductive foreign object from the card holder 16 and mounts the regular IC card 50.

In the second embodiment, a diode 24 is used as a component of the power supply control unit 15 in place of the buffer 22 of the first embodiment. However, since the diode 24 is cheaper than the buffer 22, the cost is lower. , Which is advantageous.

It should be noted that even during the process of data transfer with the IC card after step S28, the same routine for checking for a mounting abnormality as shown in FIG. 5 is repeatedly executed.

In addition, any items that are described in the first embodiment but are not described in the second embodiment that can be applied to the present embodiment based on reasonable judgment are described in the present embodiment. Shall also apply.

In the second embodiment, when the output voltage level of the second power supply 14b is set to a level where the sum of the output voltage level and the voltage drop of the diode 24 is lower than the output voltage level of the first power supply 14a, The output from the second power supply 14b may be constantly supplied. Diode 24
This is because the backflow due to is reliably prevented. In that case, in the flowchart of FIG. 5, the processing of step S23 and steps S25 and S29 becomes unnecessary.

Third Embodiment In the third embodiment, the front and back sides of an IC card are determined. FIG. 6 shows the third embodiment.
A specific configuration of the power supply control unit 15 in the case of (1) is shown (corresponding to claim 7). Embodiment 1 as an element for preventing backflow
The buffer 22 is used as in FIG. 23 is a resistor for preventing overcurrent. As a power output terminal for the IC card 50, a dummy power output terminal f is added in parallel with the power output terminal c, and a changeover switch 26 is provided. The common terminal of the changeover switch 26 is a terminal a, a voltage check terminal d, a resistor 23, And a state where the changeover switch 26 is connected to the power output terminal c and a state where it is connected to the dummy power output terminal f by a control signal from the control terminal g connected to the CPU 11. It is configured to switch.

The other configuration of the power control unit 15 is the same as that of the first embodiment, and the description is omitted.

FIG. 7 shows a schematic structure of the card holder 16. The upper part of the card holder 16 is provided with a power input electrode exposed on the surface when the IC card 50 is normally mounted. The power supply terminal 27 is provided at a position where the IC card 50 comes into contact with the IC card 50 and the IC card 50 is exposed at the lower side of the card holder 16 on the surface (lower surface) when the IC card 50 is mounted upside down. Another dummy power supply terminal 28 is provided at a position in contact with the power input electrode.

Reference numeral 17 is a lock mechanism, 18 is a mounting detection switch, and 19 is a lock detection switch.

Next, the power supply control unit 15 having the configuration of FIG.
The operation of the device body 10 connected to the device will be described with reference to the flowcharts shown in FIGS. The operation of the CPU 11 is started by turning on a main power supply in the device main body 10. The CPU 11 waits until the attachment detection switch 18 is turned on in step S41, and then proceeds to step S4.
The process proceeds to step S2, and waits for the lock detection switch 19 to be turned on, and then proceeds to step S43.

In step S43, the CPU 11 sends a control signal to the control terminal of the second power supply 14b to switch the second power supply 14b to the output state,
Is switched to the conducting state. Thereby, the second power supply 14b
Is output from the power supply output terminal c to the power supply terminal 27 of the card holder 16 through the buffer 22 and the resistor 23 of the power supply control unit 15.

The CPU11 checks a voltage level Vd of voltage check terminal d at step S44, the voltage level Vd to determine whether less than the threshold value Vth ₁ for determining the turn over of the IC card 50. The threshold Vth ₁ is greater than a predetermined threshold value Vth serving as a reference for determination of conductive objects (Vth _1> Vth). When the vd ≧ Vth ₁ means that the power supply terminal 27 which is connected to the power supply output terminal c is not in contact with the power input electrode of the IC card 50. In this case, the process proceeds to step S45 and the CPU
The control signal is sent from the control terminal 11 to the control terminal g to switch the changeover switch 26 to the dummy power output terminal f side.

[0051] Then, it is determined whether or not lower than the threshold Vth ₁ for determining the check Turn again a voltage level Vd of voltage check terminal d at step S46. Vd <dummy of the power supply output terminal f when the Vth ₁
Means that the dummy power supply terminal 28 connected to the power supply input electrode of the IC card 50 is turned over. At this time, the process proceeds to step S47, where a message signal of the reverse mounting of the IC card is transmitted to the alarm device 20, and
The user is notified of the fact that the IC card 50 is inverted by a predetermined operation of the alarm 20.

Next, the output of the second power supply 14b, which has become unnecessary because it has been checked in step S49, is cut off, and the buffer 22 is turned off to be in a high impedance state. In step S50, a control signal is sent to the control terminal g. The changeover switch 26 is switched back to the power output terminal c side. Then, the process returns to step S41. The user recognizes the operation of the IC card reversal mounting by the annunciator 20, and replaces the IC card 50 in a correct posture. When Vd ≧ Vth _{1 in} the judgment of step S46, both the portion in contact with the power supply terminal 27 and the portion in contact with the dummy power supply terminal 28 are insulators.
That is, it means that the insulating foreign matter is incorrectly attached. In this case, the process proceeds to step S48 to send a message signal of attaching the insulating foreign matter to the alarm device 20.
The user is informed that the insulating foreign matter is mounted by the predetermined operation.

Next, step S49 and subsequent steps S5
The process returns to step S41 via 0. The user takes out the insulating foreign matter and mounts the regular IC card 50.

[0054] When Vd <of Vth ₁ is determined in step S44 step S51~S57 or step S51~
S55 is executed, which is the same as steps S4... S10 in the flowchart of FIG. 3 of the first embodiment.

It should be noted that, even during the process of data transfer with the IC card after step S55, the process shown in FIG.
A routine for checking a mounting abnormality similar to that shown in FIG. 9 is repeatedly executed.

In addition, with respect to any items described in the first and second embodiments but not described in the third embodiment, items which can be applied to the present embodiment based on rational judgment are as follows. It is also applicable to the form.

[Fourth Embodiment] A fourth embodiment relates to a modification of the power supply control unit 15. FIG. 10 shows a specific configuration of the power supply control unit 15 in the fourth embodiment (corresponding to claim 7). Terminal b connected to second power supply 14b
Is connected to one end of a resistor 29 for limiting overcurrent, and the other end is connected to a voltage check terminal d.

The common terminal of the changeover switch 30 is connected to the power output terminal c, one transfer contact of the changeover switch 30 is connected to a connection point B between the resistor 29 and the voltage check terminal d, and the other transfer contact is connected to the second transfer contact. One power supply 1
It is connected to terminal a connected to 4a. The changeover switch 30 is switched by a control signal from a control terminal e. In this case, neither a buffer nor a diode is required. The operation is substantially the same as in the first embodiment.
This is the same as (the flowchart in FIG. 3).

[Fifth Embodiment] A fifth embodiment relates to a modification of the power supply control unit 15. FIG. 11 shows a specific configuration of the power supply control unit 15 in the fifth embodiment (corresponding to claim 7). In the first to fourth embodiments, the first power supply 14
a and the second power supply 14b, but in the case of the fifth embodiment, a common single power supply 14 is used, and the common terminal of the changeover switch 31 is connected to the terminal a connected to the common power supply 14. ', One of the transfer contacts is connected to a common connection point A between the power output terminal c and the voltage check terminal d, and the other transfer contact is connected to the common connection point via an overcurrent limiting resistor 32. A connected to A.

The changeover switch 31 is switched by a control signal from a control terminal e. Again, neither buffers nor diodes are required. The operation is substantially the same as in the first embodiment (the flowchart in FIG. 3).
Is the same as

While some embodiments have been described above, the present invention includes the following configurations.

(1) As a modification of the third embodiment (FIG. 6), a diode may be used instead of the buffer 22 as in the second embodiment.

(2) In the flowchart shown in FIG. 3 of the first embodiment, the notifying process of step S7 and step S7
6 may be reversed, or the notification process of step S7 may be omitted. The same applies to steps S26 and S27 in the flowchart shown in FIG. 5 of the second embodiment. The same applies to steps S53 and S54 in the flowchart shown in FIG. 9 of the third embodiment.

(3) The lock mechanism 17 need not be provided. Then, irrespective of the presence or absence of the lock mechanism 17, in the type without the lock detection switch 19, steps S2, S22,
42 is omitted. In the type having the lock mechanism 17 and the lock detection switch 19, the mounting detection switch 18 may be omitted. In that case, steps S1, S21, S41
Is omitted.

(4) As an operation of the annunciator 20, for example, a green light-emitting diode is turned on when it is properly mounted, a red light-emitting diode is turned on (or blinks) when a conductive foreign matter is mounted, and when an insulating foreign matter is mounted. To make the red light-emitting diode blink (or light) in reverse,
An operation is considered in which one light emitting diode is used and the lighting is performed for a fixed time during regular mounting, and the light is flashed when a foreign object is mounted. In this case, the blinking cycle when the conductive foreign matter is attached is different from the blinking cycle when the insulating foreign matter is attached. When the annunciator 20 is a buzzer, in addition to changing the sound at the time of regular wearing and the sound at the time of foreign matter attachment, a separate voice synthesizing circuit is added, and the regular wearing and foreign matter wearing (conductivity / insulation distinction)
May be output. other,
A liquid crystal display device or the like may be used as the annunciator 20, and a message may be displayed thereon by characters, symbols, icons, or colors.

(5) An on / off switch may be provided in place of the buffer 22, and the switch may be opened after completion of the mounting check.

(6) In the above embodiment, the mounting check is performed by voltage, but the mounting may be checked by current.

(7) In the above embodiment, an IC card (IC memory card) having a memory function and storing data and / or a program has been described as an object to be mounted. The present invention is not limited to this. ID cards, credit cards, modem cards, interface cards, sound cards, hard disk drive built-in cards, etc. Readout with built-in microprocessor (CPU) /
Writable, card with built-in analog or digital circuit without storage function, other PC
Various cards conforming to MCIA standard and JEIDA standard,
A card of a standard other than the above (for example, a card having a keyboard and a liquid crystal display) may be used.

(8) First power supply 14a and second power supply 14
b or the common power supply 14 may be a primary battery or a secondary battery, or may be a power supply circuit configured to be connected to these batteries or an AC adapter.

(9) In the above-described embodiment, the program represented by the flowcharts in the drawings is used to
Instead, the program is built in the memory 52 of the IC card 50, and the program is installed in the RAM of the memory 12 by reading from the IC card 50. You may. The RAM of the memory 12 has a backup, and the installed program is retained even when the main power is turned off. Therefore, it may be installed once. It should be noted that the mounting abnormality check process cannot be performed only at the time of the first installation, but this is not actually a problem.

The above items (1) to (9) are independent of each other, and any of these items may be appropriately combined in an appropriate number.

It should be noted that the wording representing each component described in the claims, the wording representing the connection relationship between the components,
All arbitrary words, including words representing each state, each action, each action, each process, etc., are merely expressions for convenience of explanation, and therefore should not be interpreted restrictively in any way. It must be construed that all equivalent expressions are included without departing from the spirit of the technical idea of the present invention, or the meaning of each word must be interpreted in the broadest sense. The words in the section of the means for solving the problems and the section of the effect of the invention should be interpreted in the same manner. Especially, "Electrical equipment", "Power supply", "Attached object", "Power supply control unit", "Power supply terminal", "Check terminal", "Power supply output terminal", "Switch", "Recording medium", "Electric quantity", "Announcement", "Installation""Rock" must be interpreted as such. For example, "electric equipment" includes "electronic equipment", and should be interpreted in a broad sense not only for equipment having an information processing function but also for home appliances and various manufacturing devices. The "attached object" is not limited to a card-like object, but may be in any form as long as it has some usable information and functions. Includes expansion boards for personal computers.

[0073]

According to the present invention, an electric device capable of utilizing information and functions contained in a detachably mounted object can be used when a foreign object that is not a legitimate object is erroneously inserted. By detecting this and notifying the user of the abnormality, safety can be ensured. In addition, even if the object is properly inserted, the user can be notified of the fact that the object is inserted upside down, so that further safety can be ensured. In addition, by stopping the supply of the original driving power, damage, failure, and abnormal operation of the CPU and other circuit components can be prevented.

According to the present invention relating to a recording medium on which a program for controlling an electric device is recorded, the above-described effects are exhibited by installing the program in a microcomputer of the electric device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a mobile communication terminal and an IC card according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram showing a specific circuit configuration of a power control unit according to the first embodiment;

FIG. 3 is a flowchart showing the operation of the first embodiment.

FIG. 4 is a circuit diagram showing a specific circuit configuration of a power control unit according to the second embodiment.

FIG. 5 is a flowchart showing the operation of the second embodiment.

FIG. 6 is a circuit diagram showing a specific circuit configuration of a power supply control unit according to a third embodiment.

FIG. 7 is a side view showing a schematic structure of a card holder according to a third embodiment.

FIG. 8 is a flowchart showing the operation of the third embodiment.

FIG. 9 is a flowchart showing the operation of the third embodiment (continuation of FIG. 8);

FIG. 10 is a circuit diagram showing a specific circuit configuration of a power supply control unit in Embodiment 4.

FIG. 11 is a circuit diagram showing a specific circuit configuration of a power supply control unit according to a fifth embodiment.

FIG. 12 shows a mobile communication terminal and an I according to a conventional technology.
Block diagram showing a schematic configuration of a C card

[Explanation of symbols]

10 Device body (portable communication terminal; electric device) 11 CPU 12 Memory 14 Common power source 14a First power source 14b Second power source 15 Power control unit 16 Card holder Reference Signs List 17 Lock mechanism 18 Mounting detection switch 19 Lock detection switch 20 Alarm 22 Buffer 24 Diode 23, 25, 29, 32 Resistor (element for limiting overcurrent) 26 , 30, 31 changeover switch 27 power supply terminal 28 dummy power supply terminal 50 IC card (mounting object) 51 CPU 52 memory c power output terminal d voltage check terminal e, g: Control terminal f: Dummy power output terminal

Claims (11)

[Claims] 1. A power supply for mounting check is supplied to a predetermined electrode of an object to be mounted, and it is determined whether or not the object is a legitimate object to be mounted based on a detected amount of electricity. Electrical equipment. 2. The electric device according to claim 1, wherein switching to the original driving power supply state is prohibited when an abnormality is determined, and switching to the driving power supply state is performed when the abnormality is determined. Electrical equipment. 3. The electric device according to claim 1, wherein a power supply for mounting check is started based on a detection signal of the mounting of the mounting object, a detection signal of the mounting lock, or both of the detection signals. Electrical equipment that is configured to 4. The electric device according to claim 1, wherein a power source for checking the mounting and a power source for the original driving are separate, and a detection signal of the mounting of the object to be mounted or a detection signal of the mounting lock or the two. The power supply for mounting check is started to a predetermined electrode of the mounted object based on the detection signal, and it is determined whether the mounted object is a regular mounted object based on the detected amount of electricity. An electric device configured to prohibit switching to the power supply state of the power supply and to switch to the power supply state for driving when the normal state is determined. 5. The electric device according to claim 1, wherein a power supply terminal for supplying power to a predetermined electrode of the object to be mounted, a power source for mounting check, and a power source for original driving. A power supply control unit is interposed therebetween, and a power supply output terminal for the power supply terminal of the power supply control unit is connected to the driving power supply and the check terminal in common, and the common connection point and the mounting check power supply are connected. An element for overcurrent limitation and an element that can be switched to a high impedance state or an open state are interposed therebetween,
An electrical device configured to make the latter element conductive when the attachment is determined and to switch to the high impedance state or the open state when the attachment is determined to be normal. 6. The electric device according to claim 1, wherein a power supply terminal for supplying power to a predetermined electrode of the object to be mounted, a power supply for mounting check, and a power supply for original driving are provided. A power supply control unit is interposed therebetween, and a power supply output terminal for the power supply terminal of the power supply control unit is commonly connected to the driving power supply and the check terminal, and the common connection point and the mounting check power supply are connected. An electric device in which an overcurrent limiting element and a backflow preventing diode are interposed. 7. The electric device according to claim 1, wherein a power supply terminal for supplying power to a predetermined electrode of the object to be mounted, a power source for mounting check, and a power source for original driving are provided. A power supply control unit is interposed therebetween, and a power supply output terminal for the power supply terminal of the power supply control unit is connected to the drive power supply and the check terminal via a changeover switch. Electrical equipment in which an element for limiting overcurrent is interposed between 8. The electric device according to claim 1, wherein a changeover switch and an overcurrent limiting element are added to the common power supply, so that a power supply for checking the mounting and an original power supply are provided. An electric device configured to generate a power supply for driving. 9. The electric device according to claim 1, further comprising: means for judging a mounting posture of the object to be mounted, and notifying when the mounting posture is determined to be abnormal. Electrical equipment. 10. The electric device according to claim 1, wherein the mounted object is a recording medium that stores data or a program and is at least readable or readable / writable. And electrical equipment. 11. A recording medium on which a program for controlling an electric device according to any one of claims 1 to 10 is recorded, wherein a procedure for checking mounting of an object to be mounted and a power supply for mounting checking are received. A procedure for supplying to the mounted object, a procedure for determining whether or not the object is a legitimate object based on the detected amount of electricity, A computer-readable recording medium for an electric device, in which a program for executing a procedure for shifting and a procedure for performing notification when an abnormality is determined is recorded.