Passive keyless entry device for monitoring tire pneumatic pressure by bidirectional communication
First Claim
1. A passive keyless entry device for monitoring a tire pneumatic pressure by bidirectional communication comprises:
- a car mounting device mounted to an automobile;
a keyless entry portable device; and
a transmitter-receiver for monitoring the tire pneumatic pressure,wherein said car mounting device comprises a low frequency signal transmitting section for transmitting a request signal of a low frequency to said keyless entry portable device and said transmitter-receiver for monitoring the tire pneumatic pressure, a receiving section for a keyless entry for receiving an answer signal of a high frequency responsive to said request signal from said keyless entry portable device, a receiving section for monitoring the tire pneumatic pressure for receiving the answer signal of the high frequency responsive to said request signal from said transmitter-receiver for monitoring the tire pneumatic pressure, and a controller for forming said request signal and controlling operation of a door lock mechanism in response to said answer signal and obtaining tire pneumatic pressure information.
2 Assignments
0 Petitions
Accused Products
Abstract
A passive keyless entry device is constructed by a car mounting device mounted to an automobile, a portable device and transmitter-receivers for monitoring a tire pneumatic pressure. The car mounting device has a low frequency signal transmitting section for transmitting a request signal to the portable device and the transmitter-receivers for monitoring the tire pneumatic pressure, a receiving section for a keyless entry for receiving an answer signal responsive to the request signal from the portable device, a receiving section for monitoring the tire pneumatic pressure for receiving the answer signal responsive to the request signal from the transmitter-receivers for monitoring the tire pneumatic pressure, and a controller for forming the request signal and controlling the operation of a door lock mechanism in response to the answer signal and displaying tire pneumatic pressure information.
43 Citations
8 Claims
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1. A passive keyless entry device for monitoring a tire pneumatic pressure by bidirectional communication comprises:
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a car mounting device mounted to an automobile; a keyless entry portable device; and a transmitter-receiver for monitoring the tire pneumatic pressure, wherein said car mounting device comprises a low frequency signal transmitting section for transmitting a request signal of a low frequency to said keyless entry portable device and said transmitter-receiver for monitoring the tire pneumatic pressure, a receiving section for a keyless entry for receiving an answer signal of a high frequency responsive to said request signal from said keyless entry portable device, a receiving section for monitoring the tire pneumatic pressure for receiving the answer signal of the high frequency responsive to said request signal from said transmitter-receiver for monitoring the tire pneumatic pressure, and a controller for forming said request signal and controlling operation of a door lock mechanism in response to said answer signal and obtaining tire pneumatic pressure information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification