Trw Limited

Wickes Manufacturing Company

Kenneth R Pitera

George P Lambropoulos

Robert A Hair

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

Remote control system for door locks

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 circuits for receiving a coded signal including a code portion of binary bits, memory circuits for storing a first code of binary bits, circuits for comparing the code portion of a received coded signal with the first code and circuits 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.

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.

A transmitter is provided for transmitting a remote binary control signal to a vehicle-mounted receiver having a stored unique security code, a security code comparator, circuitry for powering up and activating the code comparator upon receipt of a signal including an integral power up initiation code, and circuitry for outputting a vehicle function command corresponding to the function code portion of a received signal having the matching unique security code. The transmitter stores a unique security code comprising a sequence of binary bits and has a plurality of manual switches each operable to transmit an integral three-part signal comprising a sequence of binary bits including the power up initiation code, the unique security code, and a selected one of a plurality of function codes. Preferably, the power up initiation code includes at least two binary bits, the unique security code includes at least twenty-four binary bits, and the function codes each include at least three binary bits. Upon continued depression of the manual switch, the transmitter sends a second integral three-part signal containing a different function code.

Transmitter for remote control system for door locks

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 transmiting 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.

Growing community of inventors

Warren, MI, United States of America

Kenneth R Pitera