Automotive passive entry system and method of operating same
AssigneeLear Corporation
InventorsRiad Ghabra, Ehab Tarmoom
Life of this patent
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Abstract
A passive start and entry (PASE) system includes a PASE module and a token. The token includes a display. The PASE module generates a low frequency wake-up signal and a high frequency challenge signal for the token in response to a triggering event. The token ignores the wake-up signal if the display is on. The token may turn the display off in response to receiving the low frequency wake-up signal. The token may also turn the display off in response to receiving the high frequency challenge signal.
Claims18
A passive entry system for an automotive vehicle comprising:
- a control unit being configured to broadcast a wake-up signal at a first frequency to prompt a token to power-up if the token is in a low-power consumption mode;
- and
- a token, including a display, being configured to receive the wake-up signal and to deactivate the display if the display is active in response to receiving the wake-up signal.
A method of operating a token of a passive entry system, the token including a display, the method comprising:
- receiving a high frequency challenge signal to validate the token;
- determining if the display is on;
- and
- turning the display off in response to receiving the high frequency challenge signal if the display is on.
A method of operating a passive entry system including a control module and token, the token including a display, the method comprising:
- generating a display deactivation signal to prompt the token to deactivate the display;
- and
- generating a wake-up signal to prompt the token to power-up if the token is in a low-power consumption mode.
Dependencies are inferred from the claim text.