JP4230277B2 - Engine start control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an engine start control device that can be changed to either an incompatible or incompatible specification for an immobilizer function based on information from a plurality of external sources.
[0002]
[Prior art]
In recent years, many vehicles equipped with immobilizers (electronic movement lock devices) have been widely used to prevent theft of vehicles. As such an immobilizer, for example, in JP-A-7-242158, it operates by turning off an ignition key. During this operation, any of an engine start circuit, a fuel pump control circuit, and an ignition circuit is used. A device that also cuts off the power supply of the circuit is disclosed.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-242158
[Problems to be solved by the invention]
By the way, in order to reduce the burden of designing, developing and managing the engine start control device, that is, preparing two types of immobilizer compatible and non-compatible, stocking etc., with one type of engine start control device Then, based on information from the outside, an engine start control device that can be used with or without an immobilizer has been developed. In such an engine start control device, there is usually only one source of information on immobilizer compatibility / non-compliance from the outside, and even if the vehicle is set as an immobilizer compatible vehicle, malicious intent to know the structure of the vehicle well If the transmission source is changed to an immobilizer-incompatible specification by a person who has it, there is a problem that the vehicle is changed to an immobilizer-incompatible vehicle and the engine can be easily started.
[0005]
The present invention has been made in view of the above circumstances, and it is possible to design, develop, and manage immobilizer-compatible and non-compatible specifications in advance, and to support immobilizers even if it is a malicious person who knows the vehicle structure well. An object of the present invention is to provide an engine start control device that is difficult to illegally change from a specification to an immobilizer non-compliant specification.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the engine start control device according to the present invention described in claim 1 can be changed to either an incompatible or incompatible specification based on information from a plurality of external sources. In the engine start control device, the plurality of external transmission sources are at least one of directly outputting information and indirectly outputting information, and each output from the plurality of external transmission sources. Only when all of the information to be processed is information indicating a request that does not support the immobilizer, the specification is set so as not to support the function of the immobilizer.
[0008]
Further, the engine start control device according to the present invention as set forth in claim 2 is based on information from a plurality of external sources, and the engine start control can be changed to either a compatible or non-compatible specification for the function of the immobilizer. in the apparatus, a plurality of sources of the outside, have a response and non-compliant determination means for the information from other sources to be input to each of the outgoing Gennai for the immobilizer, the external multiple outgoing Only when all the information output from the source is information indicating a request that is incompatible with the immobilizer, the specification is set to be incompatible with the function of the immobilizer .
[0009]
The engine start control device according to the present invention described in claim 3 is an engine start control that can be changed to either a compatible or non-compatible specification for the function of the immobilizer based on information from a plurality of external transmission sources. The device does not support the function of the immobilizer only when all of the information that is encrypted and output from the plurality of external sources is information indicating a request that is not supported by the immobilizer. It is characterized by the specification and setting .
[0010]
Furthermore, the engine start control device according to the present invention as set forth in claim 4 is based on information from a plurality of external sources, and the engine start control can be changed to either a compatible or non-compatible specification for the function of the immobilizer. In the apparatus, when the plurality of external transmission sources include other transmission sources on the upstream side and information is input from the other transmission sources on the upstream side, the other transmission sources on the upstream side If there is no input of the information, it is determined that there is a response request for the function of the immobilizer, and all of the information output from each of the plurality of external transmission sources makes a request not compatible with the immobilizer. Only when it is the information shown, it is characterized in that it is set as a specification that does not correspond to the function of the immobilizer .
[0011]
In other words, the engine start control device according to claim 1 has the function of the immobilizer only when all of the information output from each of the plurality of external transmission sources is information indicating a request not compatible with the immobilizer. For non-compliant specifications, set. At this time, the plurality of external transmission sources are at least one of outputting information directly and outputting information indirectly.
[0013]
In addition, the engine start control device according to claim 2 has the function of the immobilizer only when all of the information output from each of the plurality of external transmission sources is information indicating a request not compatible with the immobilizer. For non-compliant specifications, set. Here, the plurality of sources of external, and have a response and non-response determination unit for the immobilizer to the information from other sources to be input to its outgoing respectively source.
[0014]
Furthermore, the engine start control device according to the third aspect of the present invention has an immobilizer function only when all of the information output from each of a plurality of external transmission sources is information indicating a request not supported by the immobilizer. For non-compliant specifications, set. At this time, information outputted from a plurality of external sources is their respective encrypted.
[0015]
In addition, the engine start control device according to the fourth aspect of the present invention has an immobilizer function only when all of the information output from a plurality of external transmission sources is information indicating a request not supported by the immobilizer. For non-compliant specifications, set. Here, a plurality of sources of external, include another source on the upstream side, from other sources of the upstream side case in which information is input, from other sources of the upper stream side If there is no input of information, it is determined that there is a response request for the immobilizer function.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of the present invention. FIG. 1 is a system configuration diagram of an engine start control device having a plurality of transmission sources. FIG. 2 is a functional block diagram of the transmission source and the engine start control device. 3 is a flowchart showing processing executed at each transmission source.
[0017]
In FIG. 1, reference numeral 1 denotes an engine start control device. The engine start control device 1 is based on information from a plurality of external transmission sources, and can be used for both immobilizer functions and non-compatible specifications. For example, it is provided as a part of an engine control device (not shown).
[0018]
The engine start control device 1 is connected with a plurality of external transmission sources 11 to 11 as a transmission source, and among these transmission sources, the transmission source 11 to the transmission source 1n are engine sources. Directly connected to the start control device 1, the transmission sources 21 to mn are indirectly connected to the engine start control device 1 via other transmission sources.
[0019]
As an example of each transmission source described above, the present invention is applied to a control unit of each system such as a combination meter and an integrated unit. Here, a representative example will be specifically described with reference to FIG.
[0020]
That is, as shown in FIG. 2, the key bed of the ignition key 2 has an IC chip transponder 3 embedded therein and stores information for encryption verification.
[0021]
The information transmitted from the above ignition key is received by the ring antenna 4 provided in the key cylinder, and the information received by the ring antenna 4 is processed in the transmission source B.
[0022]
The transmission source B includes an information storage unit 21 in which information for cryptographic verification and original information corresponding to immobilizer are stored, and information from the information storage unit 21 and a transmission source A immediately upstream from the transmission source B. The encryption verification / determination unit 22 that compares the information of the above and determines whether the encryption verification and the immobilizer are supported or not, and the encryption process that outputs the verification / determination result from the encryption verification / determination unit 22 after encryption The output unit 23 is mainly included. That is, the transmission source B is configured to include a determination unit that does not support or supports the immobilizer.
[0023]
Similarly to the transmission source B, the transmission source A also transmits the information storage unit 11 in which the information for encryption verification and the original information corresponding to the immobilizer are stored, and the information in the information storage unit 11 is transmitted as necessary. An encryption output unit 12 for outputting is provided.
[0024]
Then, the engine start control device 1 receives the information from the transmission source B, that is, the information for encryption verification and the immobilizer compatible / non-compatible information, and the cryptographic verification information and the immobilizer compatible / non-compatible original information Is mainly stored in the information storage unit 31 in which the information is stored, and the information from the information storage unit 31 and the information from the transmission source B are compared to perform encryption verification and immobilizer support / non-support determination. It is configured.
[0025]
Next, processing performed by the transmission source B having the above-described configuration will be described with reference to the flowchart of FIG. In the flowchart of FIG. 3, the transmission source B is generally indicated as a transmission source XY, the transmission source A is indicated as an upstream transmission source, and the engine starter 1 is indicated as a downstream source or the engine start control device 1. ing.
[0026]
First, in step (hereinafter abbreviated as “S”) 101, encryption information and immobilizer correspondence / non-correspondence information are received and input from an upstream transmission source, and the process proceeds to S102 where encryption is performed based on the information for cipher verification. Verification verification is performed. In the most upstream transmission source, information is transmitted downstream when the key switch changes from the off state to the on state, or when the ignition switch changes from the off state to the on state.
[0027]
If the result of the determination in S102 is that encryption verification / decryption is impossible, the process proceeds to S104, where the encryption information and the information on the request for response to the immobilizer are encrypted and output to the downstream transmission source or the engine start control device 1. On the contrary, if the encryption verification / decryption is possible, the process proceeds to S103.
[0028]
In S103, the input information, that is, the immobilizer correspondence / non-correspondence information from the upstream transmission source is compared with the internal information (immobilizer correspondence / non-correspondence original information), and both the input information and the internal information are immobilizers. If there is no corresponding information, the process proceeds to S104, where the encryption information and the non-response request information for the immobilizer are encrypted and output to the downstream transmission source or the engine start control device 1.
[0029]
Conversely, as a result of the determination in S103, when either the input information or the internal information has immobilizer-compatible information, or either the input information or the internal information has missing immobilizer-compatible information. If YES in step S104, the flow advances to step S104, and the encryption information and the information on the request for response to the immobilizer are encrypted and output to the downstream transmission source or the engine start control device 1.
[0030]
The present invention is configured in substantially the same manner not only in the above-described ignition key system but also in each system such as the left and right door keys and the trunk room key.
[0031]
As described above, according to the embodiment of the present invention, the immobilizer function is set to a specification that does not support the immobilizer only when all of the plurality of external sources are incompatible with the immobilizer. Even if the compatible and non-compatible specifications are common, once the immobilizer support is set, even a malicious person who knows the structure of the vehicle is improperly changed from the immobilizer compatible specification to the immobilizer non-compatible specification. It has become difficult to change.
[0032]
Moreover, even if the some external transmission source outputs information directly or can output information indirectly, it can apply, and is excellent in versatility.
[0033]
Furthermore, since a plurality of external transmission sources can determine whether the immobilizer is compatible with or not compatible with information from other transmission sources input into each transmission source, many determinations are made by the engine start control device 1. Therefore, it is possible to suppress only the determination on the transmission source directly connected to the engine start control device 1.
[0034]
In addition, since information output from a plurality of external sources is encrypted and output, it has a great security effect.
[0035]
Furthermore, when a plurality of external sources include other sources on the upstream side and information is input from the other sources on the upstream side, information from other sources on the upstream side When there is no input, it is determined that there is a response request for the function of the immobilizer, so that the crime prevention function can be appropriately exhibited even when other upstream transmission sources are destroyed.
[0036]
【The invention's effect】
As described above, according to the present invention, the immobilizer compatible specification can be designed, developed and managed in advance, and even a malicious person who knows the structure of the vehicle well. Therefore, there is an excellent effect that it is difficult to illegally change to an immobilizer non-compliant specification.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of an engine start control device having a plurality of transmission sources. FIG. 2 is a functional block diagram of the transmission source and the engine start control device. FIG. 3 is a flowchart showing processing executed by each transmission source. Explanation of]
DESCRIPTION OF SYMBOLS 1 Engine start control apparatus 11 Information storage part 12 Encryption output part 21 Information storage part 22 Encryption collation / determination part 23 Encryption process output part 31 Information storage part 32 Encryption collation / determination part

Claims (4)

Based on information from multiple external sources, the engine start control device can be changed to either an incompatible or incompatible specification for the immobilizer function.
The plurality of external sources are at least one of outputting information directly and indirectly outputting information,
That all of the information in the output from a plurality of sources of the outside and it is set to be non-compliant specification to features of the immobilizer only if is information indicating a request for non-compliant with respect to the immobilizer An engine start control device. Based on information from multiple external sources, the engine start control device can be changed to either an incompatible or incompatible specification for the immobilizer function.
A plurality of sources of the outside, have a determining means corresponding and non-response to the immobilizer to the information from other sources to be input to each of the outgoing Gennai,
Only when the information output from each of the plurality of external transmission sources is information indicating a request not compatible with the immobilizer, the specification of the non-compatible with the function of the immobilizer is set. features and to Rue engine start control device. Based on information from multiple external sources, the engine start control device can be changed to either an incompatible or incompatible specification for the immobilizer function.
Specifications that are incompatible with the function of the immobilizer only when all of the information that is encrypted and output from each of the plurality of external sources is information indicating a request that is incompatible with the immobilizer. setting characteristics and to Rue engine start control system that. Based on information from multiple external sources, the engine start control device can be changed to either an incompatible or incompatible specification for the immobilizer function.
When the plurality of external transmission sources are provided with other transmission sources on the upstream side and information is input from the other upstream transmission sources, the information from the other upstream transmission sources If there is no input, it is determined that there is a request for the immobilizer function ,
Only when the information output from each of the plurality of external transmission sources is information indicating a request not compatible with the immobilizer, the specification of the non-compatible with the function of the immobilizer is set. features and to Rue engine start control device.

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