A low-frequency emission electronic unit (20) includes two low-frequency antennas (B1, B2). The second antenna (B2) is passive and resonant, oriented along the main axis (Y) of the first low-frequency antenna (B1) and is adapted to generate two low-frequency fields (D2, D2) at right angles to the field (D1) emitted by the first antenna (B1). The low-frequency emission electronic unit (20) makes it possible to reduce the zones of rupture of reception of the low-frequency signals by the wheel unit (13) situated in proximity in which the low-frequency signals emitted by the low-frequency emission electronic unit are not received by the closest wheel unit (13). A low-frequency signal transmission method alternating the emissions of waves by the two antennas (B1, B2) is also described.

A keyless entry device includes a user interface configured to receive an input from a user of the device; a haptic output device configured to generate a haptic effect to the user; and a processor configured to receive a command based on the input from the user through the user interface, to communicate the command to another entity, to receive information from the another entity, and to output a control signal to a drive circuit coupled to the haptic output device to cause the haptic output device to generate the haptic effect to the user based on the information received from the another entity.

A beacon device includes a control circuitry, a window, and a plurality of sets of illumination sources. The window includes a prismatic structure forming a ring from a planar perspective. The prismatic structure defines an inside surface and an outside surface from the planar perspective. The plurality of sets of illumination sources are coupled to the control circuitry. Each set of illumination sources includes a first illumination source disposed proximal to the inside surface of the prismatic structure and includes a second illumination source disposed proximal to the outside surface of the prismatic structure. The control circuitry is to illuminate a first set of the plurality of sets of illumination sources to transmit a signal in a first direction.

An electronic messaging device includes a receiver configured to receive a message at one of a first operational frequency and second operational frequency. The messaging device can operate using a time synchronous protocol and can receive commands through over-the-internet-programming (OTIP) and over-the-air-programming (OTAP).

Systems and methods for generating haptic effects associated with envelopes in audio signals are disclosed. One disclosed system for outputting haptic effects includes a processor configured to: receive an audio signal; determine an envelope associated with the audio signal; determine a haptic effect based in part on the envelope; and output a haptic signal associated with the haptic effect.

A device for receiving a data signal transmitted via load modulation has a transmitter portion that transmits a primary signal along a signal path to an antenna for wireless transmission of the primary signal. A sensor senses current or voltage variations of the primary signal in the signal path, and a signal extraction unit extracts the data signal based on the sensed current or voltage variations.

Systems, devices and methods involving device identification are provided. In this regard, a representative system includes: a first device having a first power line and a first connector, the first connector being coupled to the first power line; and a second device having a second power line and a second connector, the second connector being coupled to the second power line and sized and shaped to mate with the first connector such that the first device electrically communicates with the second device; the first device being operative to modulate impedance exhibited at the first power line; the second device being operative to detect the modulated impedance and correlate the modulated impedance with an identification of the first device.

A system and method is provided for providing location based services. The system includes at least one module configured to publish location information of a mobile user using a publish subscribe format based on a user preference mode of notification.

An automated notification system for use in a facility, including a telephone system, a controller, a paging system, and a warning system. The warning system includes warning lights, warning speakers, and warning displays. The telephone system includes extension handsets, and the paging system includes paging speakers. The extension handsets, paging speakers, warning speakers, warning lights, and warning displays are distributed throughout the facility. An alert condition may be activated using one of the extension handsets or by an activation device within the facility. Upon detection of an alert condition, the controller actuates the warning system and uses the paging system to provide audible and visual warnings throughout the facility, and provides outgoing notification to emergency personnel through the telephone system. Remote units located in outlying areas around the facility are wirelessly signaled by the control unit to provide appropriate warnings in such locations.

An automated notification system for use in a facility, including a telephone system, a controller, a paging system, and a warning system. The warning system includes warning lights, warning speakers, and warning displays. The telephone system includes extension handsets, and the paging system includes paging speakers. The extension handsets, paging speakers, warning speakers, warning lights, and warning displays are distributed throughout the facility. An alert condition may be activated using one of the extension handsets or by an activation device within the facility. Upon detection of an alert condition, the controller actuates the warning system and uses the paging system to provide audible and visual warnings throughout the facility, and provides outgoing notification to emergency personnel through the telephone system. Remote units located in outlying areas around the facility are wirelessly signaled by the control unit to provide appropriate warnings in such locations.