RF PROTOCOL WITH VARIABLE PERIOD WAKEUP
First Claim
1. A method of remotely activating an automotive system comprising:
- generating a pre-amble signal using a remote device, said pre-amble signal comprising a plurality of signal pulses sequentially varied throughout a pre-amble period;
generating a main message signal after a wake-up time-period using said remote device;
polling for said signal pulses using a receiver system, said polling comprising an on-state of said receiver system having a on-state length sufficient for receiving at least two of said sequentially varied signal pulses;
determining said wake-up time-period using said at least two of said sequentially varied signal pulses;
placing said receiver system into a low-power sleep state during the remaining portion of said wake-up time-period; and
reactivating said receiver system at the end of said wake-up time-period;
receiving said main message using said receiver system.
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Accused Products
Abstract
A remote wake-up assembly is provided including a remote device containing logic adapted to: generate a pre-amble signal comprising a plurality of pre-determined signal pulses sequentially varied throughout a pre-amble period; and generate a main message signal after a wake-up time-period. A receiver system is included containing logic adapted to: poll for the signal pulses, the receiver system polling comprising an on-state having a on-state length sufficient for receiving at least two of the sequentially varied signal pulses; determine the wake-up time-period using said at least two of the signal pulses; place the receiver system into a low-power sleep state during the remaining portion of said wake-up time-period; reactivate the receiver system at the end of the wake-up time-period; and receive the main message.
40 Citations
20 Claims
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1. A method of remotely activating an automotive system comprising:
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generating a pre-amble signal using a remote device, said pre-amble signal comprising a plurality of signal pulses sequentially varied throughout a pre-amble period; generating a main message signal after a wake-up time-period using said remote device; polling for said signal pulses using a receiver system, said polling comprising an on-state of said receiver system having a on-state length sufficient for receiving at least two of said sequentially varied signal pulses; determining said wake-up time-period using said at least two of said sequentially varied signal pulses; placing said receiver system into a low-power sleep state during the remaining portion of said wake-up time-period; and reactivating said receiver system at the end of said wake-up time-period;
receiving said main message using said receiver system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A remote wake-up assembly comprising:
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a remote device containing logic adapted to; generate a pre-amble signal, said pre-amble signal comprising a plurality of pre-determined signal pulses sequentially varied throughout a pre-amble period; and generate a main message signal after a wake-up time-period; and a receiver system containing logic adapted to; poll for said signal pulses, said receiver system polling comprising an on-state having a on-state length sufficient for receiving at least two of said sequentially varied signal pulses; determine said wake-up time-period using said at least two of said sequentially varied signal pulses; place said receiver system into a low-power sleep state during the remaining portion of said wake-up time-period; reactivate said receiver system at the end of said wake-up time-period; and receive said main message. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A remote wake-up assembly comprising:
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a remote device containing logic adapted to; generate a pre-amble signal, said pre-amble signal comprising a countdown sequence comprised of a plurality of pre-determined signal pulses throughout a pre-amble period; and generate a main message signal after a wake-up time-period; and a receiver system containing logic adapted to; poll for said signal pulses, said receiver system polling comprising an on-state having a on-state length sufficient for receiving at least two of said signal pulses; determine said wake-up time-period using said at least two of said signal pulses; place said receiver system into a low-power sleep state during the remaining portion of said wake-up time-period; reactivate said receiver system at the end of said wake-up time-period; and receive said main message. - View Dependent Claims (18, 19, 20)
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Specification