초록 ▼

A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition and having means for receiving a coded signal including a code portion of binary bits, memory means

A remote control system which includes (a) a receiver unit adapted to be fixedly mounted on a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition and having means for receiving a coded signal including a code portion of binary bits, memory means for storing a first code of binary bits, means for comparing the code portion of a received coded signal with the first code and means for shifting the controlled device to one of the conditions upon the comparison match between the code portion of a received signal and the stored first code and (b) a transmitting unit for transmitting the stored second code of binary bits when the door lock is to be shifted into one of its conditions. In this system the invention involves the improvement wherein the coding of the second code set into the transmitter is a unique group of binary bits and the receiver unit includes a field programming arrangement for setting the first code of the receiver unit to the unique group of binary bits in the transmitting unit by using the signal from the transmitting unit as received by the receiver unit. In accordance with this improvement, the first code of the receiver unit is set to the second code of the transmitting unit in the field and may be changed from one code to another code upon authorized use of a second transmitting unit having its own unique code.

대표청구항 ▼

In a remote control system including a receiver unit adapted to be fixedly mounted onto a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition, said receiver unit including means for receiving a coded signal including a code portion of binary bits

In a remote control system including a receiver unit adapted to be fixedly mounted onto a motor vehicle having at least one door lock with a first locked condition and a second unlocked condition, said receiver unit including means for receiving a coded signal including a code portion of binary bits, memory means for storing a first code of binary bits, means for comparing the code portion of a received coded signal with said first code and means for shifting said door lock to one of said conditions upon a comparison match between said code portion of a received signal and said stored first code; and a transmitting unit including means for storing a second code of binary bits, selector means for indicating a desire to shift said door lock into one of said conditions, means responsive to said selector means for transmitting a coded signal including said second code as the code portion of the transmitted signal, which transmitted signal has a signal strength sufficient to drive said receiving means when said transmitting unit is in proximity to said receiver unit, the improvement comprising: programming means for establishing said stored first code, said programming means including field programming means for permitting entry of said coded portion of said received coded signal into said memory means to establish said first code as corresponding to said coded portion of said received signal, said field programming means including switch means associated with said receiver unit for permitting said entry of said coded portion only when said switch means is manually operated.