Key fob
First Claim
1. A key for locking and unlocking a car, configured to send an unlock time window signal which, when the car is locked and the unlock time window signal is received, causes the car to unlock, and to send an identification signal such that, when the car is unlocked and neither the unlock time window signal nor the identification signal is received, the car will lock, wherein the key sends the unlock time window signal only upon a signal from a user to unlock the car.
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Accused Products
Abstract
A key for locking and unlocking a car is disclosed, which is configured to send a first signal which, when the car is locked and the first signal is received, causes the car to unlock, and to send a second signal which, when the car is unlocked and neither the first signal nor the second signal is received, causes the car lock, and the key sends the first signal only upon a signal from a user to unlock the car. The car recognizes a first wireless transmission which, when the car is locked and the first signal is received, causes the car to unlock, and recognizes a second wireless transmission such that, when the car is unlocked and neither the first nor the second signal is received, causes the car to lock, and the first signal is received only upon a user giving a signal to unlock the car.
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Citations
20 Claims
- 1. A key for locking and unlocking a car, configured to send an unlock time window signal which, when the car is locked and the unlock time window signal is received, causes the car to unlock, and to send an identification signal such that, when the car is unlocked and neither the unlock time window signal nor the identification signal is received, the car will lock, wherein the key sends the unlock time window signal only upon a signal from a user to unlock the car.
- 8. A car which recognizes a first wireless transmission which, when the car is locked and an unlock time window signal is received, causes the car to unlock, and recognizes a second wireless transmission such that, when the car is unlocked and neither the unlock time window nor an identification signal is received, causes the car to lock, wherein the unlock time window signal is sent only upon a user giving a signal to unlock the car, and the identification signal is sent without the user giving a signal to unlock.
- 14. A method of locking and unlocking a car, comprising sending an unlock time window signal which, when the car is locked and the unlock time window signal is received, causes the car to unlock, and sending an identification signal such that, when the car is unlocked and the identification signal is no longer received, causes the car to lock, wherein the unlock time window signal signal is sent only upon a signal from a user to unlock the car.
Specification