Vehicle-onboard DSRC apparatus
First Claim
1. A vehicle-onboard dedicated short-range communication (DSRC) apparatus comprising:
- a DSRC processing unit that processes a radio communication signal transmitted by DSRC;
an electronic toll collection (ETC) processing unit that performs transactions of an ETC command and ETC data included in the radio communication signal communicated with the DSRC processing unit; and
a security module including a security processing unit including an encryption/decryption unit for performing encryption/decryption of the ETC data included in a communication signal transmitted between the ETC processing unit and an IC card with user information held therein, a host interface for communication between the security processing unit and the ETC processing unit, and an IC card interface for communication between the security processing unit and the IC card, wherein the security processing unit further includes;
a command judgment unit for judging a type of command included in a communication signal transmitted between the ETC processing unit and the IC card, and a command control unit for controlling whether the command is to be analyzed, according to a result of judgment by the command judgment unit.
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Accused Products
Abstract
In a vehicle-onboard dedicated short-range communication (DSRC) apparatus for the DSRC communication system, a command judgment unit of an electronic toll communication-security application module (ETC-SAM) judges the type of command included in a communication signal transmitted between a HOST and an IC card with user information held therein. A command control unit of the ETC-SAM controls whether the command is to be analyzed, according to a result of judgment by the command judgment unit. Therefore, it is possible to simplify a communication procedure and reduce a communication time.
37 Citations
14 Claims
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1. A vehicle-onboard dedicated short-range communication (DSRC) apparatus comprising:
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a DSRC processing unit that processes a radio communication signal transmitted by DSRC;
an electronic toll collection (ETC) processing unit that performs transactions of an ETC command and ETC data included in the radio communication signal communicated with the DSRC processing unit; and
a security module including a security processing unit including an encryption/decryption unit for performing encryption/decryption of the ETC data included in a communication signal transmitted between the ETC processing unit and an IC card with user information held therein, a host interface for communication between the security processing unit and the ETC processing unit, and an IC card interface for communication between the security processing unit and the IC card, wherein the security processing unit further includes;
a command judgment unit for judging a type of command included in a communication signal transmitted between the ETC processing unit and the IC card, and a command control unit for controlling whether the command is to be analyzed, according to a result of judgment by the command judgment unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle-onboard dedicated short-range communication (DSRC) apparatus comprising:
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a DSRC processing unit that processes a radio communication signal transmitted by DSRC;
an electronic toll collection (ETC) processing unit that performs transactions of ETC commands and ETC data included in the radio communication signal communicated with the DSRC processing unit;
a security module including a security processing unit including an encryption/decryption unit for performing encryption/decryption of the ETC data included in a communication signal transmitted between the ETC processing unit and a first IC card with user information held therein, a host interface for communication between the security processing unit and the ETC processing unit, a first IC card interface for communication between the security processing unit and the first IC card, a second IC card interface for communication between the ETC processing unit and a second IC card, and a signal conversion unit connected between the second IC card interface and the host interface, for converting a signal form of a communication signal between the second IC card interface and the host interface;
a first IC card slot into which the first IC card is inserted; and
a second IC card slot into which the second IC card is inserted. - View Dependent Claims (9, 10)
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11. A vehicle-onboard dedicated short-range communication (DSRC) apparatus comprising:
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a DSRC processing unit that processes a radio communication signal transmitted by DSRC;
an electronic toll collection (ETC) processing unit that performs transactions of ETC commands and ETC data included in the radio communication signal communicated with the DSRC processing unit;
a security module including a security processing unit including an encryption/decryption unit for performing encryption/decryption of the ETC data included in a communication signal transmitted between the ETC processing unit and an IC card with user information held therein, a host interface for communication between the security processing unit and the ETC processing unit, a first IC card interface for communication between the security processing unit and the IC card, a second IC card interface for communication between the ETC processing unit and the IC card, and a signal conversion unit connected between the second IC card interface and the host interface, for converting a signal form of a communication signal between the second IC card interface and the host interface;
an IC card slot into which the IC card is inserted; and
a switch that switches the IC card slot to either the first IC card interface or the second IC card interface. - View Dependent Claims (12)
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13. A vehicle-onboard dedicated short-range communication (DSRC) apparatus comprising:
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a DSRC processing unit that processes a radio communication signal transmitted by DSRC;
an electronic toll collection (ETC) processing unit that performs transactions of ETC commands and ETC data included in the radio communication signal communicated with the DSRC processing unit;
a security module including a security processing unit including an encryption/decryption unit for performing encryption/decryption of the ETC data included in a communication signal transmitted between the ETC processing unit and a first IC card with user information held therein, a host interface for communication between the security processing unit and the ETC processing unit, and a first IC card interface for communication between the security processing unit and the first IC card;
a first IC card slot into which the first IC card is inserted; and
a second IC card slot into which a second IC card is inserted, wherein the ETC processing unit includes a second IC card interface for communication with the second IC card. - View Dependent Claims (14)
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Specification