Abstract:
The present disclosure relates to a system that uses a switch to convey wireless signals between a plurality of electronic devices interconnected by dielectric waveguides. In some embodiments, the system includes a plurality of electronic devices respectively having a transceiver element that generates a wireless signal that transmits a data packet. A switch receives the wireless signal from a first one of the plurality of electronic devices and re-transmits the wireless signal to a second one of the plurality of electronic devices. A plurality of dielectric waveguides convey the wireless signal between the plurality of electronic devices and the switch. Respective dielectric waveguides have a dielectric material disposed at a location between one of the plurality of electronic devices and the switch. Using the switch to convey wireless signals between the plurality of electronic devices provides a system that has a low wireless signal attenuation and reduced number of transceivers.
Abstract:
A transmitter arrangement using randomization is disclosed. The arrangement includes one or more randomizers, a measure component and a frame select component. The one or more randomizers are configured to generate one or more randomized frames from an original frame. The measure component is configured to measure a criterion for the original frame and the one or more randomized frames. The frame select component is configured to select a frame for transmission from the one or more randomized frames and the original frame. The selection is performed according to the measured criteria, such as frame duration.
Abstract:
A sensor may encode data using a first encoding scheme. The first encoding scheme may include encoding a data bit, included in the data, using a first chip sequence that corresponds to a first set of current levels. A second encoding scheme may be used by another sensor to encode other data. The second encoding scheme may include encoding a data bit, included in the other data, using a second chip sequence that corresponds to a second set of current levels. The first chip sequence and the second chip sequence being different chip sequences. The sensor may modulate a current, based on the first set of current levels, to provide the encoded data.
Abstract:
A sensor interface system includes a system bus, a bus master and a sensor. The bus master is coupled to the system bus. The bus master is configured to provide voltage regulation at a first band and perform data transmission within or at a second band. The sensor is also coupled to the system bus. The sensor is configured to receive or utilize the voltage regulation and to perform data transmission within or at the second band.
Abstract:
Internal event verification is enabled in sensor bus systems. One example sensor bus system includes a channel master component and one or more channel slave components. A first subset of the channel slave components can include sensors that sense one or more properties (e.g., acceleration) associated with an event (e.g., crash) and output sensor data based on the one or more sensed properties. A second subset of the channel slave components can include channel verification components that can receive, decode, and analyze at least a portion of the sensor data, and output event data indicating whether an event occurred based on the analyzed portion of the sensor data. The channel master component can receive and decode the sensor data and the event data, and output information to a controller, which can send a signal to initiate a response (e.g., airbag deployment) when an event is detected and verified.
Abstract:
Various methods and devices involving a slave device are discussed. The slave device, which may be without a clock input, receives a clock message and generates a clock based on the received clock message. In some embodiments, the slave device receives a further clock message and transmits a confirmation message simultaneously with receiving the further clock message. In other embodiments, determining a clock may comprise sampling the clock message with an internal system clock and providing the clock based on located edges. Other techniques are also discussed.
Abstract:
An enhanced serial interface system is disclosed. The system includes a master component and a slave component. The master component is configured to operate in a standard mode and an enhanced mode for communication. The master component includes standard terminals and hybrid terminals. Only the standard terminals are used for communicating in the standard mode. The hybrid terminals and the standard terminals are used for communicating in the enhanced mode. The slave component is configured to operate in the enhanced mode and communicate with the master component.
Abstract:
A communication system having a configurable bandpass filter is disclosed. The system includes a bandpass filter and a bandpass controller. The bandpass filter has an adjustable center frequency. The bandpass controller is configured to identify a frequency shift in a master in or received signal and to shift the center frequency of the bandpass filter according to the identified frequency shift.
Abstract:
A sensor system utilizing adaptively selected carrier frequencies is disclosed. The system includes a system bus, a bus master, and a sensor. The system bus is configured to transfer power and data. The bus master is coupled to the system bus and is configured to provide power to the bus and receive data from the bus. The sensor is coupled to the system bus and is configured to transfer data on the bus using an adaptively selected carrier frequency.
Abstract:
An implementation determines crash severity quantifier values based on crash sensor samples and determining an air bag firing based at least on the crash severity quantifier values.