Abstract: A passive entry system and method for determining the location of a remote transmitter positioned near a vehicle. The system and method including a transmitter configured to transmit one or more polling sequences. The polling sequences including one or more polling signals indicative of a particular side and/or door of the vehicle. The system and method further including a receiver configured to receive an acknowledgement signal from a remote transmitter in response to one or more of the polling sequences. The system and method also including a controller configured to determine if the remote transmitter is positioned near the first side or second side of the vehicle based upon the acknowledgement signal being in response to the first or second polling sequence.

Abstract: A key fob assembly includes a key fob and a removable key. The key fob has an electrical port. The removable key is storable in the key fob. The removable key conceals the electrical port when the removable key is stored in the key fob. The electrical port is exposed when the removable key is removed from the key fob.

Abstract: A remote keyless entry system includes a portable communication device for communicating with an electronic control module of a transportation vehicle. The transmitter has at least two selectable communication channels for broadcasting communications signals to the transportation vehicle. A vehicle based electronic control module communicates with the portable communication device. The electronic control module includes a receiver that includes at least two selectable communication channels for receiving RF signals from the portable communication device. A controller selectively energizes the receiver for measuring a RSSI voltage level of each selectable communication channel of the receiver over respective predetermined time periods. The controller determines which of the at least two selectable communication channels includes a lowest noise level based on the measured RSSI voltage level.

Abstract: In one embodiment of a system and method for remote activation of a device includes, a transceiver is provided for transmitting a command signal according to a first transmission protocol having a first data rate, receiving an acknowledgment signal indicating that the command signal transmitted according to the first transmission protocol has been received, and transmitting the command signal according a second transmission protocol, the second transmission protocol having a second data rate less than the first data rate and including partition of the command signal. A controller is provided for selecting the first transmission protocol for use in transmitting the command signal in response to a user input, and selecting the second transmission protocol for use in transmitting the command signal when the transceiver fails to receive the acknowledgment signal.

Abstract: A combined personal convenience and remote fob device is provided for use with a transportation vehicle. The personal convenience device includes a housing and is adapted to perform a non-transportation related convenience function. The remote fob device is supported within the housing and is capable of performing at least one of an active remote keyless entry function, an active remote start function, a passive entry function, a passive start function, and an immobilizer function.

Abstract: A system and method for receiving signals from a tire pressure monitoring (TPM) system, a remote keyless entry (RKE) system, and a passive entry system in a manner that reduces the occurrence of signal interference includes transmitting at least a first signal to a receiver on the vehicle. The receiver is configured to have multiple channels for receiving the TPM signal, the RKE signal and/or the passive entry signal. The method also includes receiving the first signal on a first receiver channel. The method further includes selecting a second receiver channel for receiving at least a second signal when the second signal is or will be generated.

Abstract: A system and method for remote activation of a device includes, in one embodiment, transmitting a command message according to a first modulation, and transmitting a signal representing the command message for the device according to a second modulation. The signal representing the command message transmitted according to the second modulation may be transmitted within the command message transmitted according to the first modulation.

Abstract: A vehicle system is provided with a portable device that is configured to provide a wireless signal. The vehicle system includes at least three base stations for being positioned about a vehicle within a first plane and a fourth base station for being positioned within the vehicle and vertically offset from the first plane to define a second plane with two of the at least three base stations. Each base station is configured to receive the wireless signal and to generate a message indicative of a time of flight of the wireless signal. The fourth base station is further configured to determine a three-dimensional location of the portable device based on the message generated by each base station.

Abstract: A remote function fob associated with a vehicle is disclosed, the fob for enabling secure communication between the vehicle and a device. The fob may include a transceiver configured for communication with the device. The fob may further include a controller which may be configured to enable secure communication with the device via the transceiver. The controller may be further configured for operation with a code generated using a security protocol, the code to be used in secure communication between the device and the vehicle, the code for transmission to the device via the transceiver.

Abstract: A remote function fob is disclosed for a passive entry-passive start (PEPS) system for a vehicle. The fob may include a battery, a low frequency (LF) receiver, and a controller. The controller may be configured to enable a low current consumption mode wherein the LF receiver is disabled such that the fob is unable to respond to a PEPS request signal transmitted from a vehicle control module. A method is also disclosed which may include enabling a low current consumption mode wherein a fob receiver is disabled such that the fob is unable to respond to a PEPS request signal transmitted from a vehicle control module. In such a fashion, a shelf-life of the fob battery may be extended.

Abstract: An apparatus for performing a desired vehicle function is provided. The apparatus comprises a base station configured to receive a command signal indicative of the desired vehicle function while in a receive mode. The base station is further configured to determine whether the received command signal includes at least one of a second data component from a plurality of second data components and to activate a transmit mode in the event the received command signal includes the at least one of the second data component. The base station is further configured to determine whether the received command signal includes at least one additional second data component from the plurality of second data components while in the transmit mode and to determine that the portable device is positioned within a predetermined range in the event the received command signal includes the at least one additional second data component.

Abstract: A system and method for preventing relay attack on a passive entry system (PES) or other passive system (PS) included within a vehicle or other entity. The relay attack prevention may be based in part on an assessment of whether the fob is able to distinguish signal strength relative to messages communicated form different antennas within the vehicle and/or amongst different signal amplitude communicated from the same antenna.

Abstract: Universal garage door opener and appliance control system operable to facilitate garage door opener and appliance control with a fob or other wireless device operable to wirelessly communicate corresponding instructions to a vehicle other device for subsequent relay to the garage door opener or controlled appliance.

Abstract: A passive entry system for an automotive vehicle may include a token capable of receiving a plurality of wireless signals. The token may generate a response signal to at least one of the plurality of wireless signals and reconfigure so that the token does not provide a response to at least one of the plurality of wireless signals.

Abstract: A system and method for preventing relay attack on a passive entry system (PES) or other passive system (PS) included within a vehicle or other entity. The relay attack prevention may be based in part on an assessment of whether the fob is able to distinguish signal strength relative to messages communicated form different antennas within the vehicle and/or amongst different signal amplitude communicated from the same antenna.

Abstract: A control module may be configured to support wireless transmission and/or receipt of signals used to direct universal garage door openers and other appliance control systems. The control module may be operable to prevent certain garage door opener and/or application control requests in the event certain security measures are not met. The control module may be integrated into a smart junction box, body control module, and/or other module in the event the control module is adapted for use within a vehicle.

Abstract: A method and system is disclosed for determining presence of a portable transmitter relative to a boundary. The presence may be determined according to whether the portable transmitter is interior or exterior to the boundary. The boundary may be defined as a wireless boundary that corresponds with an intersection or overlapping portion set by multiple antenna fields.

Abstract: Method and system of power regulating, such as but not limited to attenuating signal power levels. The power regulating being suitable for use in any number of application, environments, and circuits, including but not limited to those associated with a universal garage door opener (UGDO), remote keyless entry (RKE) unit, tire pressure monitor (TPM) unit, and/or a passive entry element. The regulating may be suitable for directly broadcasting the regulated signal and/or communication the regulated signal to other circuit element for further processing.

Abstract: System for processing tire pressure monitor (TPM) signals. The system include capabilities to support amplitude shift key (ASK) modulation of TPM data signals transmitted from TPMs included within one or more tires of a vehicle. The system may include a receiver and controller to process the TPM signals.

Abstract: Vehicle information (e.g., status information, calibratable parameters, or diagnostic data) is transmitted from a base station mounted in a vehicle to a portable RKE fob via a radio-frequency signal within a specified average field strength limit. A multi-byte vehicle message is formed and then coded into a multi-bit coded message. The multi-bit coded message is framed into a plurality of packets. The radio-frequency signal is wirelessly transmitted from the base station with a plurality of spaced packet windows having a predetermined duty cycle, each packet window including a respective one of the plurality of packets. The radio-frequency signal within each of the packet windows has a predetermined field strength greater than the average field strength limit and a substantially zero field strength between the packet windows. The predetermined duty cycle results in an actual average field strength for transmitting all of the packets not exceeding the average field strength limit.