JP2003203259A - In-vehicle unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that alarm program processing prepared for coping with an emergency, by which an alarm is outputted from an in-vehicle unit when a driver forgets pulling out a card from the in-vehicle unit at a finish time of driving, imposes an unnecessary burden on application program processing for the regular time. <P>SOLUTION: This in-vehicle unit is equipped with a card read/write part for detecting the insertion/pull-out state of the card and accessing read/write with the card, a capacitor connected to an engine switch, a voltage drop detection circuit for detecting voltage drop of an input power source, a microprocessor part dedicated for alarm, for inputting a detection signal of the insertion/pull-out state of the card and outputting an alarm of forgetting pulling-out of the card by a voltage drop signal, and an alarm generator for generating the alarm. In the case where voltage drop of the input power source is detected and the card is in the mounted state, when a user sets an engine key in the OFF state, alarm information of forgetting pulling-out of the card is outputted while the capacitor retains the charge. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle device for inserting and removing an IC card, for example, an on-vehicle device used for an automatic toll collection system on a toll road, and the driver forgets to remove the IC card at the end of driving. The present invention relates to a vehicle-mounted device that performs an alarm process at that time.

[0002]

2. Description of the Related Art A conventional vehicle-mounted device uses the following means for preventing the IC card from being left unloaded. That is, this vehicle-mounted device has I
There is a C card mounting interface, and the presence or absence of an IC card is detected by the IC card detection unit. The stop of the drive device of the engine is detected by the drive device state detection unit. The driver detection unit detects the presence of the driver, and the vehicle state detection unit detects the on / off state of the IG switch and the open / closed state of the door. According to the control program, the control circuit detects the remaining state of the IC card when the user stops the driving device and performs a notification operation. The notification operation is stopped when it is removed, when the stop switch is turned on, or when time elapses. With this, the user can surely recognize the remaining state of the IC card. (For example, Patent Document 1
reference).

Further, another vehicle-mounted device uses the following solution in order to prevent the user from forgetting to remove the IC card and to improve the operability and the display effect at the time of insertion. It was That is, in this vehicle-mounted device, when the application processing unit receives a decrease in power supply from the power supply control unit, the application processing unit verifies the insertion / removal information from the IC card control unit, and if the IC card is inserted, warning control is performed. Send warning information to the department. Further, the ACC power source and the + B power source are used as power sources, and the application processing unit uses the + B power source to perform a warning process to the user after the ACC power source is turned off.
By turning off the B power supply, the IC
In some cases, a warning of forgetting to remove the card can be surely given (for example, refer to Patent Document 2).

[0004]

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 11-39438 (fifth,
(Page 6, Figure 1)

[Patent Document 2] Japanese Patent Laid-Open No. 2001-14500 (3rd
(Page, Figure 1)

[0005]

However, in the conventional vehicle-mounted device, in the situation where the driver forgets to remove the card from the vehicle-mounted device after the driver turns off the engine lock at the end of driving, If the user forgets to remove the alarm and some kind of alarm is output, the corresponding program processing for this kind of alarm is positioned as an emergency response. Therefore, there was a problem that an extra load was applied.

The present invention has been made to solve the above problems, and provides an on-vehicle device in which a processing processor for an emergency is separately provided to reduce the processing load of an application program at the steady time on the host CPU side. The purpose is to provide.

[0007]

An on-vehicle device according to a first aspect of the present invention is an on-vehicle device that receives power from a storage battery via an engine switch interlocked with an engine lock to operate and is capable of inserting and removing a card. A card read / write unit that detects the insertion / removal state of the card and makes read / write access to the card based on control from the host CPU, a capacitor connected to the engine switch via a diode, and an input power supply taken from the storage battery. The voltage drop detection circuit that detects the voltage drop, the detection signal of the card insertion / removal state is input, and the microprocessor unit that outputs the warning information that the card is unplugged by the voltage drop signal of the voltage drop detection circuit, and the It is equipped with an alarm generator that generates an alarm based on alarm information, the user operates the engine lock in the off state, and the voltage drop detection circuit turns on the input power supply. Drop is detected, if the card is in an attached state to the unit can card reading, while the capacitor holds a charge, it is obtained so as to output the alarm information of forgetting to pull out the card.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 is a diagram showing a configuration of a first embodiment according to the present invention. In the figure, 1 is a vehicle-mounted device, 2 is a card, 3 is an engine lock, 4 is a key, and 5 is a key embedded in the engine lock 3,
N) and an engine switch for turning off (OFF), 6 is a storage battery such as a lead storage battery, and is actually connected to an electric system (not shown) such as a power generation system of a vehicle, an ignition system, and a lighting system. Further, 7 is an antenna, 8 is a wireless transmission / reception circuit, 9 is an encryption / decryption authentication circuit, 10 is a display / input circuit, 11 is a card reading / writing unit for reading / writing the card 2, 12 is a host CPU, and 13 is stable. Power supply circuit, 14 is an antenna 7
An on-vehicle device processing unit including a wireless transmission / reception circuit 8, an encryption / decryption authentication circuit 9, a display / input circuit 10, and a card reading / writing unit 11. Further, 15 is a diode for preventing backflow, 16 is a capacitor for storing electric energy from the storage battery 6, 17 is a voltage drop detection circuit for generating a predetermined signal when the voltage of the input power source becomes a predetermined value or less,
Reference numeral 18 is a processor for performing individual processing different from the host CPU, 19 is an alarm code for issuing a warning, for example, voice data stored in the processor 18, and 20 is a digital / analog conversion circuit (hereinafter, D / A conversion circuit). , 21 is an alarm generator for issuing an alarm, such as a magnetic speaker or a piezoelectric element speaker, 22 is a microprocessor unit provided with a processor 18, an alarm code 19, and a D / A conversion circuit 20, and 23 is , Diode 15 for backflow prevention
A capacitor 16, a voltage drop detection circuit 17, a processor 18, an alarm code 19, and a D / A conversion circuit 20.
And a forgetting card removal notification module including an alarm generator 21. Further, 24 is a power supply line for supplying the input power of the storage battery 6 to the stabilized power supply circuit 13 and the voltage drop detection circuit 17 (hereinafter referred to as a first control input line), and 25 is a power supply line 24 through the diode 15 for removing the card. The forgetting notification module 23 is a power supply line that supplies power to each part. The vehicle-mounted device 1 is configured such that power is supplied from the stabilized power supply circuit 13 to each inside of the vehicle-mounted device 1 as a whole.

The processor 18 includes a voltage drop detection circuit 17
Detects a voltage drop and detects that the engine lock 3 is in a disconnected state, a card detection signal line which is a contact signal of a detection push switch 34 which detects whether or not the card 2 is inserted in the card reading / writing section 11. The state of the signal line A is read. At this time, if the card 2 is inserted,
For example, voice alarm data is read from the alarm code 19,
The alarm generator 21 issues a message alarm that the card 2 is still inserted and is ejected via the D / A conversion circuit 20.

FIG. 2 shows a card reading / writing unit 1 according to the first embodiment.
It is a figure which shows the detail of the structure of 1. In the figure, FIG.
FIG. 2A is a diagram showing a state in which the card 2 is not yet inserted in the card reading / writing section 11 or a state when it is ejected. FIG. 2B is a diagram showing the card 2 being inserted in the card reading / writing section 11. It is a figure which shows the state when it was done. Here, 26 is a front surface when the driver accesses the card reading / writing unit 11, 27 is a back surface, 28 is an upper surface, 29 is a bottom surface, and 30 is a physical detection of insertion / removal of the card 2, and a bottom portion. A card detection adapter having a cutout portion at 31, 31 is a spring A for supporting the card detection adapter 30 on the bottom surface 29, 32
Is a stopper A that is a stopper of the card detection adapter 30 that slides in the H direction by the spring A31, and 33 is a stopper B that is the other stopper of the card detection adapter 30 that slides in the H direction when the card 2 is inserted.

Further, 34 is a detection push switch for detecting insertion of the card 2 when the card detection adapter 30 is pushed by the card 2 to reach the stopper B33 point and the contact is closed, and 35 is a contact signal of the detection push switch 34. A certain card detection signal line (hereinafter referred to as signal line A) 36 has a shape tip that fits substantially into the notch of the card detection adapter 30, and the end is inclined downward and fixed to the bottom surface 29 of the stopper B. The leaf spring, 37 is the front surface 2
An eject button, which is a push-type button provided in 6 and capable of manually ejecting the card 2, and an eject bar 38 for transmitting the stress of the eject button 37 to the upper surface of the leaf spring 36. Further, 39 is an electrical contact provided on the card 2, 40 is a connection contact on the card reading / writing section 11 side, 4
Reference numeral 1 denotes a card interface signal line (hereinafter, signal line B) which connects the connection contact 39 and the host CPU 12 and is an access line for reading and writing between the host CPU 12 and the card 2.

Before the card 2 is inserted, the card 2 is in a state as shown in FIG. 2A. When the card 2 is inserted into the card reading / writing section 11, the card 2 is pressed against the card detection adapter 30 and the detection push switch 34 is inserted. Turns on, card 2
Detection information is transmitted as the signal line A35. At this time,
The notch on the bottom of the card detection adapter 30 is a spring 36.
2 and the state of FIG. 2 (b) is entered, and the mechanically semi-fixed state is achieved. In this position, the connection contact 4
Information can be exchanged between the electrical contact 39 on the card 2 and the host CPU 12 via 0 and the signal line B41. By manually pushing the eject button 37, the leaf spring 36 is physically pushed down, the fitting is released, and the card 2 is ejected.

FIG. 3 is a diagram showing in chronological order the operation related to the power supply system of the vehicle-mounted device 1 according to the first embodiment. In the figure, when the engine lock 3 is turned on (time t0), the power supply voltage applied to the vehicle-mounted device 1 rises and passes through the vehicle-mounted device operable lower limit voltage (voltage Vlw, time t1) to reach the specified voltage (voltage Vop, At time t2), the vehicle-mounted device 1 starts the steady operation. After the operation ends, when the driver turns off the engine lock 3 (time t3), the voltage decreases, and in the process of decreasing the voltage, the time when the power supply decrease is detected (voltage Vop, time t
From 4) to the vehicle unit operable lower limit voltage (Vlw) (time t4 to t5), the presence or absence of the insertion of the card 2 is detected,
It shows a situation in which alarm processing such as voice notification is performed. The period between times t2 and t4 is the period during which the vehicle-mounted device 1 is in the steady operation state.

FIG. 4 is a flow chart for explaining the operation of the forgotten card removal notification in the processor 18 of the forgotten card removal notification module 23 in the first embodiment. In the figure, S101 to S115 are numbers given to the steps of each operation. When the driver inserts the key 4 into the engine lock 3 and turns it to turn it on [S101], supply of electric current from the storage battery 6 to the electrical equipment (not shown) and the vehicle-mounted device 1 is started.

The engine can be rotated to start the operation [S102, S103], and the vehicle-mounted device 1 starts the operation and simultaneously monitors the first control input line 19 [S10].
4]. When an automobile passes through the toll booth, the vehicle-mounted device 1 and the card 2 inserted in the vehicle-mounted device 1 communicate with the roadside wireless device to exchange fee information wirelessly [S10.
5]. When the driver finishes driving [S106], the driver turns off the engine lock 3, so that the power supply current to the vehicle-mounted device 1 is cut off [S107].

However, the vehicle-mounted device 1 has a secondary battery 17
It is equipped with and can be operated for a certain period of time after the power is turned off until the electric energy disappears. The vehicle-mounted device 1 detects the voltage drop of the power supply line (first control input line) 19 by the built-in voltage drop detection circuit 18, and determines that the power supply has been cut off, that is, the driver has turned off the engine lock. Yes [S10
8]. The host CPU 13 detects the voltage drop in this way, and inspects whether or not the card 2 is still inserted at that time, inspects the state of the detection push switch 33 of the card reading / writing unit 11, that is, confirms the signal line A34. Do [S
109 / S110].

Next, if the card 2 is still inserted in the card reading / writing section 11 [S111], while the voltage of the secondary battery 17 decreases to a predetermined voltage (Vlw), the vehicle-mounted device 1
Informs by voice that the card 2 has been inserted. Therefore, the data of the alarm code 14A in the host CPU 13 is read out, converted into an audio signal by the D / A conversion circuit 12, and the alarm generator 15 issues an alarm.

On the other hand, when the detection push switch 33 detects that the card 2 is not inserted, since the card 2 is not inserted in the vehicle-mounted device 1, a voice notification that the driver can safely get off the vehicle is issued [ S112]. After a series of voice notifications, the vehicle-mounted device 1 stops operating [S11
3].

Now, in the process of continuously giving an alarm with the card inserted, it is confirmed whether the driver has ejected the card [S114]. When the driver notices and ejects the card 2, a voice alarm is issued. Is stopped [S115]. However, when the card 2 remains without being ejected despite the voice alarm, a series of alarms are continued [S116], and then the vehicle-mounted device 1 stops operating.

There is an inexpensive type of a recent processor which has a built-in D / A circuit 12 for converting an analog signal and a digital signal, and such separation can be easily performed. In short, this Embodiment 1 is based on the host CP
Independent of the regular processing of U12 as an in-vehicle device, when the card removal forgetting notification module 23 turns off the engine lock 3, it can specially deal with the emergency notification that the card 2 is still inserted. It was done like this. The above is the description of the operation in the first embodiment.

In this embodiment, the processor is the host C.
Since it specializes in processing alarms independently of PU,
Since the host CPU side in the vehicle-mounted device processing section can perform only the application program processing in the steady state, the load of the emergency processing does not increase and the host CPU program creation becomes easy.

In this embodiment, the capacitor 16
The electric circuit to be supplied by the engine lock 3
Since it is limited to the microprocessor unit 22 for detecting the disconnection state and issuing an alarm, the capacity of the capacitor can be small.

Further, in this embodiment, an example of giving an alarm by voice information based on an alarm code has been described, but as means for notifying the alarm to the outside, a physical phenomenon such as video, image, or vibration is used. Needless to say, the warning information can be realized by the individual alarm means including the audio means or any combination of the alarm means.

Although the on-vehicle device corresponding to the toll road automatic toll collection system has been described, the invention is not limited to this, and it can be applied to an automatic toll parking system, an automatic toll payment system such as a drive-through, or the like. is there.

Embodiment 2. The second embodiment according to the present invention is the same as the first embodiment shown in FIG. 1 except that the capacitor 16 is replaced with an electric double layer capacitor or a polyacene semiconductor capacitor.
That is, the configuration and the operation description in FIG. 1 to FIG. 4 can be applied as they are, and thus the specific description below is omitted.

The second embodiment has the same effects as those described in the first embodiment, and since the volume of the capacitor itself can be reduced by this replacement, the size of the vehicle-mounted device can be reduced.

Embodiment 3. FIG. 5 is a diagram for explaining the second embodiment according to the present invention. In the figure, the same or corresponding parts as those of the first or second embodiment are designated by the same reference numerals, and the description thereof will be omitted. In the figure, reference numeral 42 is a secondary battery built in the vehicle-mounted device 1. This Embodiment 3
Is a mode in which the capacitor 16 is replaced with the secondary battery 42 in the first or second embodiment. That is, when the engine lock 3 is cut off, the voltage drop detection circuit 17 detects a predetermined voltage drop, and the processor 18 does not use the electric charge charged in the capacitor as the power supply voltage for performing the alarm processing for forgetting to remove the card. In this embodiment, a secondary battery is provided to hold the electric charge and handle it.

Next, the operation of the third embodiment will be described. When the voltage drop detection circuit 17 detects the voltage drop and the engine lock 3 is in the disconnected state, the processor 18 detects the presence / absence of the insertion of the card 2 in the card reading / writing unit 11 and the detection push switch 34. The state of the signal line A of the card detection signal line, which is the contact signal of, is read. At this time, if the card 2 is inserted, the alarm code 1
For example, voice alarm data is read from 9, and the alarm generator 21 via the D / A conversion circuit 20 issues an alarm message to eject because the card 2 is still inserted.

The above-mentioned operation is the same as that shown in FIGS. 2 and 3 used in the explanation of the first or second embodiment, and the operation of the onboard device 1 for notifying that the card has been forgotten and the driver's usage procedure. , S111 and S112 in the flowchart of FIG.
The same meaning can be obtained by replacing the description of the "capacitor" in the above with a secondary battery.

A small secondary battery of the related art, for example, a nickel cadmium battery may be used. Here, the advantage of using the secondary battery is that the same voltage can be maintained for a certain period of time after the engine switch is turned off.

In this embodiment, the processor is the host C.
Since it specializes in processing alarms independently of PU,
Since the host CPU side in the vehicle-mounted device processing section can perform only the application program processing in the steady state, the load of the emergency processing does not increase and the host CPU program creation becomes easy.

In this embodiment, an example of giving an alarm by voice information based on an alarm code has been described, but as means for notifying the alarm to the outside, a physical phenomenon such as video, image, or vibration is used. Needless to say, the warning information can be realized by the individual alarm means including the audio means or any combination of the alarm means.

Although the vehicle-mounted device corresponding to the automatic toll collection system for toll roads has been described, the present invention is not limited to this, and it can be applied to an automatic toll parking system, an automatic toll payment system such as a drive-through, or the like. is there.

Fourth Embodiment FIG. 6 is a diagram for explaining the fourth embodiment according to the present invention. In the figure, the same or corresponding parts as those of the first to third embodiments are designated by the same reference numerals, and the description thereof will be omitted. 43 is a transistor 43
a, an electronic switch circuit including analog switches 43b and 43c that are switching elements, and resistors 43d and 43e, 44 is a power supply line (hereinafter, power supply output line), 45
Is a power supply line (hereinafter, second control input line).

In the electronic switch circuit 43, the transistor 43a is a PNP transistor, and the analog switches 43b and 43c are, for example, Motorola C.
A MOS integrated circuit MC4066 or the like can be used. The electronic switch circuit 43 is connected to the secondary battery 42 and is inserted between the secondary battery 42 and the microprocessor unit 22.

Next, the operation of the fourth embodiment will be described. First, in the electronic switch circuit 43, the engine lock 3 is turned on (O
N), and the interlocked engine switch 5 is turned on (ON)
In this state, the analog switch 43b becomes conductive via the first control input line 24. At this time, in the transistor 43a, a current flows from the emitter to the base,
The emitter and collector of the transistor 43a are electrically connected, and the current from the power supply input line 25 can be supplied to the microprocessor unit 22 via the power supply output line 44.

Since power is also supplied to the second control input line 45 under the control of the microprocessor unit 22, the analog switch 43c also becomes operable.
That is, both the analog switches 43b and 43c become conductive. When the driver completes the driving, the engine lock 3 is turned off (OFF) and the engine switch 5 is turned off (OFF), the analog switch 43b is supplied with power from the first control input line 24. , The analog switch 43b becomes non-conductive.

Now, when the microprocessor unit 22 stops the supply of the voltage to the second control input line 45 after the predetermined notification after the engine lock 3 is turned off (OFF), the analog switch 43c is turned on. It becomes a non-communication state. That is, the analog switches 43b and 43c are both turned off, and the base current of the transistor 43a stops flowing, so that the current to the power supply output line 44 is cut off. Therefore, the electronic switch circuit 43 is turned off, so that discharge from the secondary battery 42 can be prevented.

That is, since the secondary battery 42 is not provided with a discharge prevention circuit, the electric energy of the battery is discharged to zero after the engine lock 3 is turned off. The battery may be used as it is as long as it can sufficiently withstand charge / discharge, but in order to enhance the resistance to charge / discharge, an electronic switch circuit 43 is interposed between the secondary battery 42 and each circuit so that electric energy When it is unnecessary, disconnect from the secondary battery 42,
Over-discharge of the secondary battery 42 is prevented.

Further, the advantage of using the secondary battery 42 is that the voltage of the stored electric energy decreases as time passes when the capacitor 16 is used after the engine lock 3 is cut off. In addition, the secondary battery 42 can maintain substantially the same voltage for a certain period of time.

In the fourth embodiment, a conventional small secondary battery, for example, a nickel-cadmium battery may be used, and the secondary battery may be replaced with a capacitor.

In this embodiment, the processor is the host C.
Since it specializes in processing alarms independently of PU,
Since the host CPU side in the vehicle-mounted device processing section can perform only the application program processing in the steady state, the load of the emergency processing does not increase and the host CPU program creation becomes easy.

Further, in this embodiment, an example of giving an alarm by voice information based on an alarm code has been described, but as means for notifying the alarm to the outside, a physical phenomenon such as video, image, or vibration is used. Needless to say, the warning information can be realized by the individual alarm means including the audio means or any combination of the alarm means.

Embodiment 5. FIG. 7 is a diagram for explaining the fifth embodiment according to the present invention. In the figure, the same or corresponding parts as in Embodiments 1 to 4 are designated by the same reference numerals, and the description thereof will be omitted. Reference numeral 11A denotes a card reading / writing unit in which a card eject function is added to the card reading / writing unit 11 by an external command signal. Reference numeral 46 is connected from the microprocessor unit 22 to the card reading unit 11A and serves as a trigger signal for a card eject operation. Signal line (hereinafter,
Signal line C).

FIG. 8 shows a card reading / writing unit 1 according to the fifth embodiment.
It is a figure which shows the detail of the structure of 1A. In the figure, FIG.
FIG. 2A is a diagram showing a state in which the card 2 is not inserted in the card reading / writing unit 11A or a state when it is ejected, and FIG. 2B is a diagram showing the card 2 in the card reading / writing unit 11A.
It is a figure which shows the state when it is inserted in.

Reference numeral 47 denotes a spring B which supports the plate spring 36 near the center thereof in the V direction by pulling it downward in the drawing. Reference numeral 48 denotes a plunger (solenoid) capable of pistoning the spring B47 by applying a signal line C. Is. Here, the signal line C46 that drives the plunger 48 is supplied with power from the microprocessor unit 22.

Now, when the eject command signal is sent from the processor 18 to the signal line C46, the plunger 48 is driven and the spring B47 is pulled in the direction of the arrow: D (the lower side of the figure), so that it fits into the notch. The tip of the fitted leaf spring 36 falls off the bottom of the card detection adapter 30 and comes off. Therefore, the card detection adapter 30 again pushes out and ejects the card 2 due to the repulsive force of the spring A31.
Even if the eject button 37 is manually pushed, the leaf spring 36 is physically pushed down, so that the fitting is disengaged and the same operation occurs.

FIG. 9 is a flow chart for explaining the operation of the forgotten card removal notice in the processor 18 of the forgotten card removal notice module 23 in the fifth embodiment. The processing flow of FIG. 9 is different from the processing of S116 in the processing flow of FIG. 4 in that S117 is used. That is, it is confirmed whether or not the card 2 has been ejected [S114]. If the card 2 is not ejected and remains in spite of the voice alarm, the card reading / writing unit 11A continues after a series of alarms is continued. A card eject command is sent [S117].

In this embodiment, the processor is the host C.
Since it specializes in processing alarms independently of PU,
Since the host CPU side in the vehicle-mounted device processing section can perform only the application program processing in the steady state, the load of the emergency processing does not increase and the host CPU program creation becomes easy.

Further, in this embodiment, even if the user himself / herself cannot respond to the alarm for forgetting to remove the card for some reason, it automatically ejects, so that the forgetting to remove the card can be reliably transmitted. It is possible.

Furthermore, according to this embodiment, even if the engine lock is turned off after the operation is completed and the card inserted into the vehicle-mounted device is forgotten to be pulled out, the vehicle-mounted device is left for a while due to the electric energy accumulated in the secondary battery. Since the operation can be continued, it is possible to give an alarm based on the alarm information, and it is possible to prevent the secondary battery from being over-discharged by the electronic switch circuit and maintain its life for a long time.

[0052]

According to the first aspect of the invention, since the processor specializes in alarm processing independently of the host CPU, the host CPU side can perform only the application program processing in the steady state. The load of time processing does not increase, and the host CPU program creation becomes easy.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a first or second embodiment according to the present invention.

FIG. 2 is a detailed diagram of a card reading / writing unit according to the first or second embodiment of the present invention.

FIG. 3 is a diagram showing operations related to the power supply according to the first or second embodiment of the present invention.

FIG. 4 is a flow chart of an operation of a card removal forgetting notification according to the first or second embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a third embodiment according to the present invention.

FIG. 6 is a diagram showing a configuration of a fourth embodiment according to the present invention.

FIG. 7 is a diagram showing a configuration of a fifth embodiment according to the present invention.

FIG. 8 is a detailed diagram of a card reading / writing unit according to a fifth embodiment of the present invention.

FIG. 9 is a flow chart of an operation of a card removal forgetting notification according to the fifth embodiment of the present invention.

[Explanation of symbols]

1 On-board device, 2 cards, 3 engine locks, 4 keys, 5
Engine switch, 6 storage batteries, 7 antennas, 8
Wireless transmission / reception circuit, 9 encryption / decryption authentication circuit, 10 display / input circuit, 11, 11A card reading / writing section, 12 host CPU, 13 stabilized power supply circuit, 14 vehicle-mounted device processing section, 15 diode, 16 capacitor, 17 voltage Degradation detection circuit, 18 processor, 19 alarm code,
20 D / A conversion circuit, 21 alarm generator, 22 microprocessor unit, 23 card removal forgetting notification module, 24 power line (first control input line), 25 power line (power input line), 26 front surface, 27 Back surface, 28 upper surface, 29 bottom surface, 30 card detection adapter, 31 spring A, 32 stopper A,
33 Stopper B, 34 Detection push switch, 35
Card detection signal line (signal line A), 36 leaf spring, 37
Eject button, 38 Eject bar, 39 Electric contact, 40 Connection contact, 41 Card interface signal line (signal line B), 42 Secondary battery, 43 Electronic switch circuit, 44 Power line (power output line), 45
Power line (second control input line), 46 eject command signal line (signal line C), 47 spring B, 48 plunger,

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akio Yoshikawa             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. F-term (reference) 3E027 EA01 EC05 EC06 EC08

Claims (8)

[Claims] 1. An in-vehicle device capable of receiving and supplying power from a storage battery via an engine switch that is linked to an engine lock and capable of inserting and removing a card, detects the insertion / removal state of the card, and controls from the host CPU. A card read / write section for accessing read / write with the card based on the above, a capacitor connected to the engine switch via a diode, and a voltage drop detection circuit for detecting a voltage drop of the input power source taken from the storage battery. , The microprocessor unit that inputs the detection signal of the insertion / removal status of the card and outputs the warning information of the removal of the card by the voltage drop signal of the voltage drop detection circuit, and generates the alarm by the alert information of the removal failure. And an alarm generator that operates, the user operates the engine lock in the disengaged state, and the input voltage is detected by the voltage drop detection circuit. When the voltage drop of the card is detected and the card is mounted in the card reading / writing section, the warning information indicating that the card has been forgotten to be output is output while the capacitor holds the electric charge. Characteristic vehicle-mounted device. 2. The vehicle-mounted device according to claim 1, wherein the capacitor is an electric double layer capacitor or a polyacene semiconductor capacitor. 3. The vehicle-mounted device according to claim 1, wherein the capacitor is a secondary battery. 4. An in-vehicle device capable of receiving and supplying power from a storage battery via an engine switch which is linked with an engine lock and capable of inserting / removing a card detects the insertion / removal state of the card and controls from the host CPU. A card read / write unit that accesses the card for reading and writing, a secondary battery connected to the engine switch via a diode, and a voltage drop detection that detects a voltage drop of the input power source taken from the storage battery The circuit, the microprocessor unit that inputs the detection signal of the insertion / removal status of the card, and outputs the warning information that the card is unplugged by the voltage drop signal of the voltage drop detection circuit; The first switch element that controls connection or disconnection of the alarm generator that generates the An electronic switch circuit having a child and a second switch element, each voltage applied to the first switch element and the second switch element, capable of connecting or disconnecting the power input line;
When the user operates the engine with the engine locked, the voltage drop detection circuit detects a voltage drop in the input power supply, and the card is in the card reading / writing section, the secondary battery is The vehicle-mounted device characterized in that the warning information indicating that the card has been forgotten to be output is output while the electric charge is held by. 5. The vehicle-mounted device according to claim 4, wherein the secondary battery is a capacitor. 6. The card reading / writing unit sends a command signal for ejecting to the card mounted in the card reading / writing unit, according to any one of claims 1 to 5. In-vehicle device described. 7. The alarm generator according to claim 1, wherein when the card is ejected from the card reading / writing unit, the alarm generator stops the alarm due to the alarm information of forgetting to remove the card. The vehicle-mounted device according to item 1. 8. The alarm means by the alarm generator is any means of audio, video, image, mechanical vibration phenomenon, or a composite means combining any of them.
The vehicle-mounted device according to any one of claims 1 to 7.