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, 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, 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 up 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 from by the vehicle-side communication section; and
a storing section for storing the communication frequency, which is used when the check result indicates a successful checkup,wherein the frequency setting section is configured to switch over the communication frequency to be designated when the check result indicates the unsuccessful checkup, andwherein the frequency setting section is configured to perform a plurality of checkups for each user operation detected by the detection section, and set the communication frequency, which is stored in the storing section when a first checkup among the plurality of checkups performed by the checkup section is successful, as the communication frequency to be used in performing a next and subsequent checkups.
1 Assignment
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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.
36 Citations
16 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, 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, 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 up 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 from by the vehicle-side communication section; and a storing section for storing the communication frequency, which is used when the check result indicates a successful checkup, wherein the frequency setting section is configured to switch over the communication frequency to be designated when the check result indicates the unsuccessful checkup, and wherein the frequency setting section is configured to perform a plurality of checkups for each user operation detected by the detection section, and set the communication frequency, which is stored in the storing section when a first checkup among the plurality of checkups performed by the checkup section is successful, as the communication frequency to be used in performing a next and subsequent checkups. - View Dependent Claims (2)
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3. 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, 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 check result, the vehicle-side unit switching a communication frequency to perform the mutual communication and the checkup again when the check 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, 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 up 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 from by the vehicle-side communication section; a storing section for storing the communication frequency, which is used when the check result indicates a successful checkup; and 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, wherein the frequency setting section is configured to switch over the communication frequency to be designated when the checkup result indicates the unsuccessful checkup, and wherein the frequency setting section is configured to fix a communication frequency to the communication frequency stored in the storing section in response to the successful checkup, when no change in the radio wave environment is estimated. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification