JPH0995209A - Theft prevention device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with an exclusive electronic code input part by inputting the judge signal to a code substitution input part and outputting a code signal corresponding to the electronic code, when the electronic code from an electronic code sending part is not matched with ID code. SOLUTION: An electronic code comparison judge part 30 has a micro-computer 31 and a memory part 32 and compares and judges an electronic code A with ID code B memorized inside by receiving the electronic code A from a sending key (electronic code sending part) 10 and memorized in the inside and an approval signal D for starting a power source is outputted when they are matched. When the electronic code A is not matched with ID code B, a judge signal C is inputted from the electronic code comparison judge part 30 to a micro-computer 44 by making an adotrip meter 40 used with another purpose originally to a code substitution input part. A code signal G corresponding to the electronic code A is outputted to the electronic code comparison judge part 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-theft device using an ID code, and more particularly to an anti-theft device provided in case of trouble such as a failure of an electronic code transmitting section.

[0002]

2. Description of the Related Art In recent years, for example, as a device for preventing the theft of a vehicle, in addition to a door lock and a steering lock, an electronic code transmitting section for transmitting an electronic code such as a numerical code, and the electronic code are stored in the inside. A collation judging section for making collation judgment with a security code (ID code), an engine starting section for enabling the engine as a power source to be started by a permission signal output from the collation judging section, and an electronic code transmitting section An electronic code input unit such as a keyboard provided in the event of a malfunction such as
There is known an anti-theft device configured to prevent the engine from starting unless a match with the D code is confirmed (see, for example, JP-A-2-164644).

[0003]

In such a technique, an electronic code input section such as a keyboard provided for a malfunction such as a failure of the electronic code transmission section is exclusively prepared, and the electronic code input section is provided with an electronic code. This is disadvantageous because it is used only when there is a problem such as a failure of the transmitter and is not normally used, resulting in an increase in price. In addition, a space for installing the electronic code input unit is required, which is also disadvantageous for downsizing the device.

[0004]

In order to solve the above-mentioned problems, the present invention has an electronic code transmitting unit for transmitting an electronic code stored therein, and an electronic code receiving unit for receiving the electronic code and storing it internally. An electronic code collation determination unit that outputs a permission signal that enables starting of a power source when a collation determination is performed with the ID code, and the electronic code collation determination unit when the electronic code does not match the ID code An electronic device originally used for another purpose, which serves as a code substitute input unit that outputs a code signal corresponding to the electronic code to the electronic code collation determination unit by inputting a determination signal from Characterize.

Further, according to the present invention, when an electronic code transmitting section for transmitting an electronic code stored therein and an ID code stored in the electronic code which has received the electronic code are collated and matched, the electronic code transmitting section receives the electronic code. An electronic code collation determination unit that outputs a permission signal that enables the power source to be started, and a code substitute input unit that outputs a code signal corresponding to the electronic code to the electronic code collation determination unit. It is characterized by including an electronic device to be used and a mode switching unit which uses the electronic device as a code substitute input unit when the electronic code and the ID code do not match.

Further, according to the present invention, an electronic code transmitting section for transmitting an electronic code stored inside and an electronic code receiving section for receiving the electronic code and performing a collation judgment with an ID code stored inside, and when they match. An electronic code collation determination unit that outputs a permission signal that enables the power source to be started, and a code substitute input unit that outputs a code signal corresponding to the electronic code to the electronic code collation determination unit. Depending on the electronic device used and the position in the key cylinder of the key for starting the power source, which is inserted into the key cylinder when the electronic code and the ID code do not match, the electronic device may be used as a code substitute input section. And a key position detection unit that operates.

Further, the present invention is characterized in that the electronic code transmitting section is provided integrally with a key for starting the power source which is inserted into a key cylinder.

Further, the present invention is characterized in that the electronic device has a digital display section capable of displaying the code signal.

The present invention also provides the code signal and the I signal.
When the number of times that the D code does not match exceeds a predetermined number of times, an input number counting unit that invalidates the subsequent input of the code signal to the electronic code collation determination unit is provided.

Further, according to the present invention, when a predetermined time elapses after the input of the code signal is invalidated by the input count unit, the time for validating the input of the code signal to the electronic code collation judging unit is set. It is characterized in that a measuring unit is provided.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Electronic code A stored inside
A key (electronic code transmitting unit) 10 for transmitting a power source and a permission signal D for enabling the power source to be started when the electronic code A is received and the ID code B stored inside is collated and judged. By inputting the determination signal C from the electronic code collation determination unit 30 to be output and the electronic code collation determination unit 30 when the electronic code A and the ID code B do not match, the electronic code A is transmitted to the electronic code collation determination unit 30. An odtrip meter (electronic device) originally used for another purpose, which serves as a code substitute input section for outputting a corresponding code signal G.
By having 40 and 40, there is no need to prepare a dedicated electronic code input section, which suppresses an increase in price and does not require an extra space, which is also advantageous for downsizing the apparatus.

Further, when the key 10 for transmitting the electronic code A stored inside and the ID code B stored upon receiving the electronic code A are collated and matched, the power source is started. The electronic code collation determination unit 30 that outputs a permission signal D that enables the electronic code collation determination unit 30 and the code substitute input unit that outputs the code signal G corresponding to the electronic code A to the electronic code collation determination unit 30 are originally used for different purposes. By including the odrip meter 40 and the mode switching unit 50 that uses the odrip meter 40 as a code substitute input unit when the electronic code A and the ID code B do not match,
For example, a user who has forgotten a specific numerical value of the electronic code A even if he / she uses the regular key 10 operates the odrip meter 40 after operating the mode switching unit 50, and thus a specific value of the electronic code A is obtained. You can check the numbers.

Further, the key 10 for transmitting the electronic code stored inside and the ID code B stored upon receiving the electronic code A are collated and the power source is started when they match. The electronic code collation determination unit 30 that outputs the enabling signal D that enables the electronic code collation determination unit 30 and the code substitute input unit that outputs the code signal G corresponding to the electronic code A to the electronic code collation determination unit 30 are originally used for different purposes. The odrip meter 40 and the electronic code A and the ID code B do not match, and the odrip meter 40 is input as a code substitute by the position of the key 10 for starting the power source to be inserted into the key cylinder 20 in the key cylinder 20. By having the key position detection unit 60 as a part, the odrip meter 40 can display the original display regardless of the determination by the electronic code collation determination unit 30. It intended to be applied when it is configured to perform, can be used as a forced-encoded alternative input unit odo trip meter 40 by a key 10 positions.

Further, since the odtrip meter 40 has an odtrip display section (digital display section) 45 capable of displaying the code signal G, the code signal G can be confirmed, which is convenient.

Further, when the number of times that the code signal G and the ID code B do not match exceeds a predetermined number, the input number counting unit that invalidates the subsequent input of the code signal G to the electronic code collation determination unit 30. By providing 33, the code signal G is not input indefinitely, so that the illegal use can be prevented.

Further, a time measuring unit 34 for validating the input of the code signal G to the electronic code collation judging unit 30 when a predetermined time has elapsed after invalidating the input of the code signal G by the input number counting unit 33. By providing it, it is possible to realize the prevention of illegal use and enable the reuse.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings showing the case where the invention is applied to a vehicle.

1 to 4 show a first embodiment of the present invention, in which a vehicle key (electronic code transmitting section) 10 has an electronic circuit section 12 storing an electronic code A in addition to a key groove 11.
And a coil 13 for transmitting a unique electronic code A composed of, for example, four digits, and a battery 14. on the other hand,
The key cylinder 20 into which the key 10 is inserted has a key groove 11
Has an insertion hole 21 and a coil 22 for receiving the electronic code A from the key 10.

Reference numeral 30 denotes a coil 21 in the key cylinder 20.
The electronic code collation determination unit that determines whether or not the electronic code A received in step 3 is correct, and performs predetermined processing by the microcomputer 3
1 and a storage unit 32 including a storage element such as a non-volatile memory and storing an ID code B unique to the key 10, and when the electronic code A and the ID code B match, a description will be given later. An ECU (not shown) that outputs a permission signal D for starting the engine in accordance with the position of the key 10 based on the determination signal C
Output to the (engine control unit) side. The electronic code collation judging unit 30 has an input number counting unit 33 and a time measuring unit 34, and their functions will be described later.

Reference numeral 40 denotes an odrip meter (electronic device mounted on the vehicle) that digitally displays the traveling distance of the vehicle. The sensor unit 41 outputs a distance signal E for each constant traveling distance of the vehicle, and the distance. The contents of the counting unit 42 that counts the signal E and the storage unit 43 that stores the running distance formed of a storage element such as a non-volatile memory for each predetermined running distance (for example, 1 km) according to the value counted by the counting unit 42. A microcomputer 4 that updates and outputs a display value signal F described later.
4 and a drive circuit section 46 for controlling an odtrip display section (digital display section) 45 formed of a display element such as a liquid crystal element or a fluorescent display tube which receives the display value signal F and digitally displays the distance. . As shown in FIG. 2, the odrip meter 40 has a switch portion 47 which is an operation knob that can be rotated and pushed from the outside, and the switch portion 47 has its contact point a closed by clockwise rotation. The odd trip display section 45 is displayed as shown in FIG. 3A, the contact b is closed by the counterclockwise rotation and the odd trip display section 45 is displayed as trip as shown in FIG. Is to close and reset the trip display on the odd tripple display section 45, and is an electronic device originally used for the purpose of displaying the distance of the odd trip.

Insert the key 10 into the key cylinder 20,
While the position of the key 10 is from “LOCK” to “ON” shown in FIG. 4, the microcomputer 31 of the electronic code collation determination unit 30 displays the electronic code A from the key 10 and the ID code B of the storage unit 32.
When it is determined that the electronic code A and the ID code B match with each other and the electronic code A is correct, a “true” determination signal C is output to the microcomputer 44 of the odtrip meter 40. At the same time, a permission signal D for starting the engine is output to the ECU side. Therefore, after this,
The odo trip meter 40 displays the od or trip distance on the od trip display section 45 by operating the switch section 47, and the engine is started by rotating the key 10 to "START" shown in FIG.

On the other hand, when the key 10 that does not have the proper electronic code A is inserted into the key cylinder 20, the electronic code A and the ID code B do not match, so the microcomputer 31 of the electronic code collation judging unit 30. Outputs a determination signal C of "false" to the microcomputer 44 of the odrip meter 40, and thereafter, the key 10 is "START" shown in FIG.
Even if it is turned to, the odrip display section 45 does not display anything (blank display) and the engine does not start. This can prevent the vehicle from being stolen. Note that the odd trip display unit 45 may display an abnormal display (abnormal display) such as (c) or (d) of FIG. 3 instead of the blank display.

By the way, even though the key 10 has the legitimate electronic code A, the microcomputer 31 of the electronic code collation judging unit 30 causes the ID code B to be generated due to some abnormality.
If the judgment signal C becomes "false" due to incorrect comparison with C, or if the true vehicle owner uses the spare key 10 which does not have the proper electronic code A, the judgment signal C is also obtained. Will be "false" and the engine will not start.
If it is necessary to use the vehicle even in such a case, the "true" determination signal C can be obtained by using the odtrip meter 40. The details will be described below.

Microcomputer 31 of electronic code collation judging unit 30
When the microcomputer 44 of the odtrip meter 40 recognizes that the determination signal C from the is “false”, the odrip meter 40 originally does not operate, but the switch unit 4 does not operate.
When the contacts b and c are closed by tripping (counterclockwise rotation) 7 and resetting (pushing in) 7, the potentials on the output side of the contacts b and c (the same applies to the contact a) change from high to low. In response to this, the microcomputer 44 displays on the odtrip display section 45 sequentially from the lower digit according to the number of reset operations. That is, each time the contact b is closed, the digit to be input is selected, and whenever the contact c is closed, the numerical value changes cyclically like "0 → 1 → 2 → ... → 8 → 9 → 0". , The microcomputer 44 outputs the display value signal F, and the odd trip display section 45 displays the signal (e) in FIG.
Codes of arbitrary numbers are displayed for each digit as shown in.

Then, the code signal G corresponding to the set number is output to the electronic code collation judging unit 30, and if the code signal G is the normal electronic code A, the microcomputer 31 of the electronic code collation judging unit 30 The determination signal C of "true" is output, and thereafter, the odo trip meter 40 displays the od or trip distance on the od trip display section 45 by operating the switch section 47, and the key 10 is "START" shown in FIG. The engine is started by rotating the vehicle to, and the user can use the vehicle.

By the way, as a countermeasure against illegal operation of the switch section 47, an input count counting section 33 and a time measuring section 34 are prepared. That is, when it is determined that the code signal G, which is the number set by the operation of the switch unit 47, does not match the regular electronic code A, the odtrip display unit 45 displays a blank or (c) or (d) of FIG. Etc., and when the number of times of non-coincidence by the input number counting unit 33 exceeds a predetermined number (for example, 2 times), the microcomputer 31 operates the switch unit 47 thereafter, and the code signal G from the odo trip meter 40 is displayed. The input of is invalid. And after this reception is prohibited, the time measuring unit 3
The time is measured according to 4, and a predetermined time (for example, 10 minutes)
When the time has passed, the system of the electronic code collation determination unit 30 is reset, and the input of the code signal G from the odo trip meter 40 by the operation of the switch unit 47 is made valid again, thereby preventing illegal use. It can be used again.

In this way, the key (electronic code transmitting section) 1
In the event of a malfunction such as a failure of 0, the odrip meter (electronic device equipped in the vehicle) that digitally displays the mileage of the vehicle is also used as the code substitute input section, and the authorized electronic code A is artificially coded as an electronic code. The vehicle can be used by sending it to the collation determination unit 30, and it is not necessary to prepare a dedicated electronic code input unit such as a keyboard, so that an increase in price is suppressed and an extra space is not required, so that the device is small in size. It is also advantageous for realization.

The above-mentioned electronic device which is also used is not limited to the odtrip meter 40 of the embodiment, but any electronic device having a switch means such as the switch section 47 capable of performing a plurality of switching operations may be used. Devices, air conditioners, etc. are used as well. Further, although it is not always necessary to have a digital display section such as the odd trip display section 45, a plurality of switching operations such as the switch section 47 can be performed by using such a digital display section side by side at the same time. It is convenient to be able to confirm the electronic code A on the digital display when operating the switch means that can be operated and inputting the electronic code A.

FIG. 5 shows a second embodiment of the present invention, in which a microcomputer 44 of the odtrip meter 40 is provided with a mode switching unit 50 for forcibly switching the operation of the switch unit 47 of the odtrip meter 40. Provided. Therefore, key 10
If the electronic code A is compared with the ID code B of the storage unit 32 and it is determined that the electronic code A is incorrect, the engine does not start, but at this time, the mode switching unit 50 is turned on,
The user can use the vehicle by forcibly switching the function of the switch portion 47 of the odrip meter 40 and allowing the switch portion 47 to perform the same operation as in the first embodiment.

In the second embodiment as well, similar to the first embodiment, when the key (electronic code transmitting section) 10 is in trouble, for example, an odrip meter for digitally displaying the traveling distance of the vehicle (mounted on the vehicle The electronic device) is also used as a code substitute input unit, and the vehicle can be used by artificially sending the legitimate electronic code A to the electronic code collation determination unit 30, and a dedicated electronic code input such as a keyboard is possible. Since it is not necessary to prepare a part, an increase in price is suppressed and an extra space is not required, which is advantageous for downsizing of the device. The mode switching unit 50 can use the odrip meter 40 as a code substitute input unit regardless of the determination signal C from the electronic code collation determination unit 30. For example, even if the regular key 10 is used, the electronic code is used. The user who has forgotten the specific numerical value of A is in the mode switching unit 5
By operating the switch unit 47 after the operation of 0 to obtain the “true” determination signal C, the specific numerical value of the electronic code A can be confirmed. The mode switching unit 50 can share the contact a of the switch unit 47.

FIG. 6 shows a third embodiment of the present invention, in which a key position detecting section 60 for forcibly switching the operation of the switch section 47 of the odtrip meter 40 to the microcomputer 44 of the odtrip meter 40. Was set up. In the first embodiment, the microcomputer 44 recognizes the content of the determination signal C, and in response to the operation of the switch unit 47, when the determination signal C is "true", the distance display and the determination signal C are displayed on the odd trip display unit 45. In the case of "false", the code was displayed on the odd trip display portion 45. The present embodiment is applied to a case where the odrip meter 40 is configured to display the original distance regardless of the content of the determination signal C, and the key 10 is inserted into the key cylinder 20 so that the key 10 shown in FIG. When the electronic code A from the key 10 is compared with the ID code B in the storage unit 32 at the time of "LOCK" shown by, the engine will not start if the electronic code A is not correct, but the key 10 shown in FIG. ACC
The operation of the switch portion 47 of the odo trip meter 40 is forcibly switched by rotating the switch to “.”, And the switch portion 47 enables the same operation as in the first embodiment, so that the user can use the vehicle. it can.

In the third embodiment as well, similar to the first embodiment, when the key (electronic code transmitting section) 10 is malfunctioning or the like, an odrip meter for digitally displaying the traveling distance of the vehicle (mounted on the vehicle The electronic device 40 which is also used as a code substitute input section can be used to artificially send the legitimate electronic code A to the electronic code collation determination section 30 so that the vehicle can be used. Since it is not necessary to prepare an input means, the increase in price is suppressed,
Since no extra space is required, it is also advantageous for downsizing the device. Further, when the odrip meter 40 is configured to perform the original display regardless of the judgment by the electronic code collation judging unit 30, the key position detecting unit 60 detects the position of the key 10 to force the odrip meter 40 to operate. Can be used as a code substitute input section.

The present invention can be applied not only to vehicles but also to motorcycles and motor boats. Further, by providing the key 10 with the electronic code transmitting unit as in each of the above-described embodiments, the electronic code transmitting unit can be easily carried. However, it is not always necessary to provide the electronic code transmitting unit and the electronic code transmitting unit may be configured separately. good.

[0034]

According to the present invention, when an electronic code transmitting section for transmitting an electronic code stored therein and an ID code stored in the electronic code which is received inside of the electronic code are collated and matched, the electronic code transmitting section receives the electronic code. The electronic code collation determining unit that outputs a permission signal that enables the power source to be started, and the electronic code collation determining unit that inputs the determination signal from the electronic code collation determining unit when the electronic code and the ID code do not match. It is necessary to prepare a dedicated electronic code input section by having an electronic device originally used for another purpose, which serves as a code substitute input section that outputs a code signal corresponding to the electronic code to the code collation determination section. Therefore, it is advantageous for downsizing of the device because it suppresses an increase in price and does not require an extra space.

Further, the electronic code transmitting section for transmitting the electronic code stored in the inside, and the ID code stored in the inside upon receiving the electronic code are collated and judged, and the power source is started when they match. An electronic code collation determination unit that outputs a permission signal that enables the electronic code and an electronic unit that originally serves as a code substitute input unit that outputs a code signal corresponding to the electronic code to the electronic code collation determination unit. By including a device and a mode switching unit that uses the electronic device as a code substitute input unit when the electronic code and the ID code do not match, even if the regular electronic code transmitting unit is used, for example. A user, who has forgotten a specific numerical value of the electronic code, confirms the specific numerical value of the electronic code by operating the electronic device after operating the mode switching unit. It can be.

Further, the electronic code transmitting section for transmitting the electronic code stored in the inside, and the ID code stored in the inside upon receiving the electronic code are collated and judged, and the power source is started when they match. An electronic code collation determination unit that outputs a permission signal that enables the electronic code and an electronic unit that originally serves as a code substitute input unit that outputs a code signal corresponding to the electronic code to the electronic code collation determination unit. Key position detection using the electronic device as a code substitute input unit based on the position of the device and the key cylinder for starting the power source that is inserted into the key cylinder when the electronic code and the ID code do not match Which is applied to the case where the electronic device is configured to perform the original display regardless of the judgment by the electronic code collation judging unit. Can be used as a forced code alternative input unit to said electronic device by said key position.

Further, since the electronic code transmitting section is provided integrally with the key for starting the power source which is inserted into the key cylinder, the electronic code transmitting section can be easily carried.

Further, the electronic equipment is convenient because it has a digital display section capable of displaying the code signal, so that the code signal can be confirmed.

Further, when the number of times that the code signal and the ID code do not match exceeds a predetermined number, the input number counting unit that invalidates the subsequent input of the code signal to the electronic code collation judging unit. By providing
Since the code signal is not input without limitation, it is possible to prevent unauthorized use.

Further, there is provided a time measuring section for validating the input of the code signal to the electronic code collation judging section when a predetermined time has elapsed after the input of the code signal is invalidated by the input count section. As a result, it is possible to realize the prevention of illegal use and to enable the reuse.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of a first embodiment of the present invention.

FIG. 2 is a plan view of an essential part of the embodiment.

FIG. 3 is an explanatory diagram of a display example of the same embodiment.

FIG. 4 is an explanatory diagram of a usage example of the embodiment.

FIG. 5 is a block diagram illustrating the configuration of a second embodiment of the present invention.

FIG. 6 is a block diagram illustrating the configuration of a third embodiment of the present invention.

[Explanation of symbols]

10 key (electronic code transmission section) 20 key cylinder 30 electronic code collation determination section 33 input count section 34 time measurement section 40 odrip meter (electronic device as code alternative input section) 45 odtrip display section (digital display section) 47 switch Section 50 mode switching section 60 key position detection section A electronic code B ID code C judgment signal D permission signal G code signal

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Claims (7)

[Claims] 1. An electronic code transmitting section for transmitting an electronic code stored inside and a start of a power source when the electronic code is received and the ID code stored inside is collated and matched. And an electronic code collation determining unit that outputs a permission signal that enables the electronic code collation determining unit to input the determination signal from the electronic code collation determining unit when the electronic code and the ID code do not match. An electronic device originally used for another purpose, which serves as a code substitute input unit for outputting a code signal corresponding to the electronic code. 2. An electronic code transmitting section for transmitting an electronic code stored inside, and a start of a power source when the electronic code is received and the ID code stored inside is collated and judged to match. An electronic code collation determination unit that outputs a permission signal that enables the electronic code and an electronic unit that originally serves as a code substitute input unit that outputs a code signal corresponding to the electronic code to the electronic code collation determination unit. Equipment and
An anti-theft device, comprising: a mode switching unit that uses the electronic device as a code substitute input unit when the electronic code and the ID code do not match. 3. An electronic code transmitting unit for transmitting an electronic code stored inside, and a start of a power source when the electronic code is received and the ID code stored inside is collated and matched. An electronic code collation determination unit that outputs a permission signal that enables the electronic code and an electronic unit that originally serves as a code substitute input unit that outputs a code signal corresponding to the electronic code to the electronic code collation determination unit. Equipment and
A key position detection unit using the electronic device as a code substitute input unit according to the position in the key cylinder of a key for starting the power source that is inserted into the key cylinder when the electronic code and the ID code do not match; An anti-theft device having: 4. The antitheft device according to claim 1, wherein the electronic code transmission unit is provided integrally with a key for starting the power source that is inserted into a key cylinder. 5. The antitheft device according to claim 1, wherein the electronic device has a digital display unit capable of displaying the code signal. 6. An input number counting unit for invalidating the subsequent input of the code signal to the electronic code collation judging unit when the number of times that the code signal and the ID code do not match exceeds a predetermined number. The antitheft device according to claim 1, further comprising: 7. When a predetermined time has elapsed after the input of the code signal is invalidated by the input count section,
The anti-theft device according to claim 6, further comprising a time measuring unit that validates the input of the code signal to the electronic code collation judging unit.