Patent ID: 7978048
Filing Date: 2011-07-12
Classification: B60R,G07C

Abstract:
1. A keyless entry system comprising: a portable transmitter that transmits respectively a lock signal and an unlock signal for a predetermined length of time, each of the lock signal and the unlock signal containing an identification code; and an operation unit that locks and unlocks doors of a vehicle in response to the lock signal and the unlock signal transmitted from the portable transmitter, wherein the operation unit includes: a receiver that receives the lock signal for executing locking operation once or the unlock signal for executing unlocking operation once transmitted from the portable transmitter, and that outputs a lock command signal or an unlock command signal having a predetermined time length when the received lock signal or the unlock signal has the predetermined length of time, and the identification code is identified; and a controller that drives actuators to lock or unlock the doors of the vehicle in response to the lock command signal or the unlock command signal output from the receiver, and wherein the time length of the unlock command signal is shorter than the time length of the unlock signal for executing unlocking operation once transmitted from the portable transmitter.