In-vehicle device control system
First Claim
1. An in-vehicle device control system comprising:
- a portable device; and
a vehicle-side unit mounted on a vehicle for performing a checkup about the portable device by mutual communication using radio waves, in which the vehicle-side unit transmits a request signal and the portable device returns a response signal in response to the request signal of the vehicle-side unit, thereby to control an in-vehicle device based on a checkup result, the vehicle-side unit switching a communication frequency to perform the mutual communication and the checkup again when the checkup result indicates an unsuccessful checkup,wherein the portable device includes;
a portable device communication section for receiving the request signal transmitted from the vehicle-side unit and returning the response signal as the mutual communication with the vehicle-side unit, the response signal including an ID code and transmitted at a communication frequency designated by the vehicle-side unit,wherein the vehicle-side unit includes;
a detection section for detecting an operation of a user made by the user for controlling the in-vehicle device, by which the checkup is started;
a frequency setting section for setting the communication frequency to be designated to the portable device;
a vehicle-side communication section for transmitting the request signal to the portable device and receiving the response signal as the mutual communication with the portable device, the vehicle-side communication section transmitting to the portable device frequency information indicating the communication frequency set by the frequency setting section;
a checkup section for checking the ID code and a registration code pre-registered, the ID code being included in the response signal transmitted from the portable device and received by the vehicle-side communication section;
a storing section for storing the communication frequency, which is used when the checkup section indicates the check result as a successful checkup; and
a reset section, wherein the checkup section is configured to perform, for each operation detected by the detection section, a first checkup and a second checkup, the first checkup checks whether the portable device is outside a vehicle and a second checkup checks whether the portable device is inside the vehicle;
the frequency setting section is configured to switchover the communication frequency to be designated to the portable device when the check result of each of the first checkup and the second checkup is indicated the unsuccessful checkup by the checkup section,the frequency setting section is configured to store the communication frequency when the first checkup is indicated the successful checkup by the checkup section,the frequency setting section is configured to set the communication frequency, which is stored in the storing section, as the communication frequency to be used in the second checkup performed subsequent to the successful first checkup, andthe reset section resets a stored content of the storing section each time the second checkup is successful in response to a given operation detected by the detection section, the stored content corresponding to the communication frequency stored as a result of the first checkup provided as the successful checkup and used for the second checkup.
1 Assignment
0 Petitions
Accused Products
Abstract
In an in-vehicle device control system, an in-vehicle device is controlled based on a checkup result of checkup operation, in which a checkup about a portable device is performed by mutual communication of transmitting a request signal from a vehicle-side unit mounted on a vehicle and transmitting in return a response signal from the portable device in response to the request signal. If the checkup is unsuccessful, the mutual communication is performed again by switching the communication frequency to perform the checkup again. When a user operates a door lock sensor, the vehicle-side unit performs an exterior checkup first. If the checkup is successful, a communication frequency, by which the checkup was performed successfully, is stored in a memory. The vehicle-side unit sets the communication frequency stored in the memory as a communication frequency, which is to be designated to the portable device, for performing an interior checkup next time.
32 Citations
19 Claims
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1. An in-vehicle device control system comprising:
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a portable device; and a vehicle-side unit mounted on a vehicle for performing a checkup about the portable device by mutual communication using radio waves, in which the vehicle-side unit transmits a request signal and the portable device returns a response signal in response to the request signal of the vehicle-side unit, thereby to control an in-vehicle device based on a checkup result, the vehicle-side unit switching a communication frequency to perform the mutual communication and the checkup again when the checkup result indicates an unsuccessful checkup, wherein the portable device includes; a portable device communication section for receiving the request signal transmitted from the vehicle-side unit and returning the response signal as the mutual communication with the vehicle-side unit, the response signal including an ID code and transmitted at a communication frequency designated by the vehicle-side unit, wherein the vehicle-side unit includes; a detection section for detecting an operation of a user made by the user for controlling the in-vehicle device, by which the checkup is started; a frequency setting section for setting the communication frequency to be designated to the portable device; a vehicle-side communication section for transmitting the request signal to the portable device and receiving the response signal as the mutual communication with the portable device, the vehicle-side communication section transmitting to the portable device frequency information indicating the communication frequency set by the frequency setting section; a checkup section for checking the ID code and a registration code pre-registered, the ID code being included in the response signal transmitted from the portable device and received by the vehicle-side communication section; a storing section for storing the communication frequency, which is used when the checkup section indicates the check result as a successful checkup; and a reset section, wherein the checkup section is configured to perform, for each operation detected by the detection section, a first checkup and a second checkup, the first checkup checks whether the portable device is outside a vehicle and a second checkup checks whether the portable device is inside the vehicle; the frequency setting section is configured to switchover the communication frequency to be designated to the portable device when the check result of each of the first checkup and the second checkup is indicated the unsuccessful checkup by the checkup section, the frequency setting section is configured to store the communication frequency when the first checkup is indicated the successful checkup by the checkup section, the frequency setting section is configured to set the communication frequency, which is stored in the storing section, as the communication frequency to be used in the second checkup performed subsequent to the successful first checkup, and the reset section resets a stored content of the storing section each time the second checkup is successful in response to a given operation detected by the detection section, the stored content corresponding to the communication frequency stored as a result of the first checkup provided as the successful checkup and used for the second checkup. - View Dependent Claims (2, 3)
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4. An in-vehicle device control system comprising:
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a portable device; and a vehicle-side unit mounted on a vehicle for performing a checkup about the portable device by mutual communication using radio waves, in which the vehicle-side unit transmits a request signal and the portable device returns a response signal in response to the request signal of the vehicle-side unit, thereby to control an in-vehicle device based on a checkup result, the vehicle-side unit switching a communication frequency to perform the mutual communication and the checkup again when the checkup result indicates as an unsuccessful checkup, wherein the portable device includes; a portable device communication section for receiving the request signal transmitted from the vehicle-side unit and returning the response signal as the mutual communication with the vehicle-side unit, the response signal including an ID code and transmitted at the communication frequency designated by the vehicle-side unit, wherein the vehicle-side unit includes; a detection section for detecting an operation of a user made by the user for controlling the in-vehicle device, by which the checkup is started; a frequency setting section for setting the communication frequency to be designated to the portable device; a vehicle-side communication section for transmitting the request signal to the portable device and receiving the response signal as the mutual communication with the portable device, the vehicle-side communication section transmitting to the portable device the request signal comprising frequency information indicating the communication frequency set by the frequency setting section; a checkup section for checking the ID code and a registration code pre-registered, the ID code being included in the response signal transmitted from the portable device and received by the vehicle-side communication section; a storing section for storing the communication frequency, which is used when the checkup section indicates the check result as a successful checkup; an estimation section for estimating a change in a radio wave environment, in which the vehicle and the portable device are located, after the successful checkup by the checkup section; and an erasing section, wherein; the checkup section is configured to perform, for each operation detected by the detection section, a first checkup and a second checkup, the first checkup checks whether the portable device is outside the vehicle and the second checkup checks whether the portable device is inside the vehicle; the frequency setting section is configured to switchover the communication frequency to be designated to the portable device when the checkup section indicates the checkup result of each of the first checkup and the second checkup as the unsuccessful checkup, the frequency setting section is configured to fix the communication frequency for a present checkup to the communication frequency stored in the storing section in response to the successful checkup in a previous checkup corresponding to a previous operation of the user, when no change in the radio wave environment is estimated relative to the previous operation of the user, the frequency setting section sets a communication frequency different from the communication frequency stored based on the successful checkup when the change in the radio wave environment is estimated, and the erasing section erases a stored content of the storing section when the change in the radio wave environment is estimated by the estimated section, the stored content corresponding to the communication frequency stored as a result of the successful checkup performed by the checkup section in the previous checkup. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification