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US 7,612,649 B2Granted
Smart entry system
AssigneeDenso Corporation
InventorsTakeshi Kumazaki, Hiroshi Yagyu
Life of this patent
Estimating the term…
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AssigneeDenso Corporation
InventorsTakeshi Kumazaki, Hiroshi Yagyu
Estimating the term…
A smart entry system for a vehicle includes a transmitter on a vehicle and a portable unit carried by a user. The transmitter transmits a request signal which defines a user detection area to detect whether the portable unit transmits a response signal to indicate the user. When the user enters the detection area while all the doors are locked, an unlock standby state is set. When the user touches a touch sensor of a driver-seat side door under the unlock standby state, only the driver-seat side door is first unlocked. The other doors are kept locked if the user opens the D-door by the time when T2 seconds elapse. On the other hand, all the doors are unlocked when T2 elapses while the driver-seat side door is not opened.
A smart entry system for a vehicle having a plurality of doors comprising:
A smart entry system for a vehicle having a plurality of doors comprising:
Dependencies are inferred from the claim text.