In-vehicle system
First Claim
1. An in-vehicle system comprising:
- a first transmitting antenna that is disposed in a substantial center in a front portion inside a vehicle;
a second transmitting antenna that is disposed in the substantial center in a rear portion inside the vehicle;
a third transmitting antenna that is disposed in a side surface near a driver seat or a passenger seat of the vehicle;
a transmission controller that controls transmission of signals from the first to third transmitting antennas, and controls existence or non-existence of the transmission of a first signal and a second signal from the first to third transmitting antennas, the second signal disturbing reception of the first signal, and a transmission pattern that is a pattern of transmission intensity;
a receiving antenna that receives a response signal, the response signal being transmitted from a portable device receiving the first signal transmitted from the first to third transmitting antennas; and
a position detector that detects a position of the portable device based on a reception result of the response signal from the portable device in each transmission pattern when at least two transmission patterns are combined.
1 Assignment
0 Petitions
Accused Products
Abstract
An in-vehicle system has a first transmitting antenna that is disposed in a substantial center in a front portion inside a vehicle, a second transmitting antenna that is disposed in the substantial center in a rear portion inside the vehicle, a third transmitting antenna that is disposed in a side surface near a driver seat or a passenger seat of the vehicle, a transmission controller that controls transmission of a first signal or a second signal from the first to third transmitting antennas, the second signal disturbing reception of the first signal, and a receiving antenna that receives a response signal, the response signal being transmitted from a portable device receiving the first signal transmitted from the first to third transmitting antennas.
14 Citations
16 Claims
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1. An in-vehicle system comprising:
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a first transmitting antenna that is disposed in a substantial center in a front portion inside a vehicle; a second transmitting antenna that is disposed in the substantial center in a rear portion inside the vehicle; a third transmitting antenna that is disposed in a side surface near a driver seat or a passenger seat of the vehicle; a transmission controller that controls transmission of signals from the first to third transmitting antennas, and controls existence or non-existence of the transmission of a first signal and a second signal from the first to third transmitting antennas, the second signal disturbing reception of the first signal, and a transmission pattern that is a pattern of transmission intensity; a receiving antenna that receives a response signal, the response signal being transmitted from a portable device receiving the first signal transmitted from the first to third transmitting antennas; and a position detector that detects a position of the portable device based on a reception result of the response signal from the portable device in each transmission pattern when at least two transmission patterns are combined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An in-vehicle system comprising:
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a first transmitting antenna that is disposed in a substantial center in a front portion inside a vehicle; a second transmitting antenna that is disposed in the substantial center in a rear portion inside the vehicle; a third transmitting antenna that is disposed in a side surface near a driver seat or a passenger seat of the vehicle; a transmission controller that controls transmission of a first signal or a second signal from the first to third transmitting antennas, the second signal disturbing reception of the first signal; a receiving antenna that receives a response signal, the response signal being transmitted from a portable device receiving the first signal transmitted from the first to third transmitting antennas; and a position detector that detects a position of the portable device based on a transmission content of the signal from the first to third transmitting antennas and a reception result of the response signal from the portable device, wherein the third transmitting antenna is disposed in the side surface on a side of the driver seat of the vehicle, wherein the transmission controller performs control such that the first signal or the second signal is transmitted from the first transmitting antenna to a first area including the driver seat and the passenger seat in the vehicle or a second area inside and outside the vehicle, the second area including a neighborhood of a door of the driver seat and a neighborhood of a door of the passenger seat, wherein the transmission controller performs control such that the first signal or the second signal is transmitted from the second transmitting antenna to a third area including a rear seat and a luggage room in the vehicle or a fourth area inside and outside the vehicle, wherein the fourth area including a neighborhood of an opening and closing body in the rear portion of the vehicle, and wherein the transmission controller performs control such that the first signal or the second signal is transmitted from the third transmitting antenna to a fifth area near the driver seat door inside and outside the vehicle. - View Dependent Claims (14, 15)
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16. An in-vehicle system comprising:
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a first transmitting antenna that is disposed in a substantial center in a front portion inside a vehicle; a second transmitting antenna that is disposed in the substantial center in a rear portion inside the vehicle; a third transmitting antenna that is disposed in a side surface near a driver seat or a passenger seat of the vehicle; a transmission controller that controls transmission of a signal from the first to third transmitting antennas, and controls existence or non-existence of transmission of a first signal and a second signal from the first to third transmitting antennas and a transmission pattern that is a pattern of transmission intensity, the second signal disturbing reception of the first signal; a receiving antenna that receives a response signal, the response signal being transmitted from a portable device receiving the first signal transmitted from the first to third transmitting antennas; and a vehicle controller that controls the vehicle based on a reception result of the response signal from the portable device in each transmission pattern when at least two transmission patterns are combined.
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Specification