A user station for a serial bus system and a method for communication in a serial bus system. The user station includes an application for carrying out a task, a transceiver unit for serially receiving a message in the form of a frame from a bus of the bus system, via which user stations of the bus system exchange messages with one another, and a filter module for filtering the received frame. The filter module for filtering is designed to check at least two segments of the frame separately to determine whether or not the received frame is to be passed on to the application.

A manager device manages communications between wireless devices in a building automation and control (BAC) network. The manager device includes multiple RF modules and a CPU, all disposed within a single housing. Each RF module includes an antenna and RF transceiver for transmitting and receiving wireless RF signals to and from the wireless devices. Each RF transceiver of each RF module operates on a different RF frequency from the RF transceiver of each of the other RF modules. The CPU runs multiple processes in a wireless network protocol stack, including an event handler process and multiple transceiver control processes. The event handler process monitors events within the BAC network, and manages message traffic to and from the transceiver control processes. The transceiver control processes receive messages from and send messages to the event handler process. Each transceiver control process is associated with a corresponding one of the RF transceivers. Each transceiver control process sends messages to and receives messages from the wireless devices via its associated RF transceiver.

A first relay device for installation at a vehicle, the first relay device comprising, a first memory and a first processor coupled to the first memory. The first processor being configured to receive a communication frame transmitted from another relay device. The first processor being configured to based on first relay information, in which destination address information expressing a destination address of a communication frame and a relay target bus are associated with each other, and based on the destination address information included in the received communication frame, identify the relay target bus. The first processor being configured to in a case in which the relay target bus of the received communication frame is not identified, output an anomaly notification signal indicating an anomaly to the other relay device.

A method of multichannel acquisition and geophysical data is provided. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. The method provides for an alternating waveform of injected current to maximize data precision and minimize soil ionization. Node type assignment interleaving is also provided to compress survey time. Self calibration of nodes is provided as is self addressing of a node array.

A subscriber station for a serial bus system including a communication control device for controlling a communication with another subscriber station and a transceiver device for sending a transmit signal produced by the communication control device as a frame to a bus of the bus system. The bit time of a signal sent to the bus in the first communication phase differs from a bit time of a signal sent in the second communication phase. The communication control device produces the transmit signal, in a first operating mode, for a first frame that is designed according to a specified communication protocol with which other subscriber stations in the bus system communicate, and is designed to produce the transmit signal, in a second operating mode, for a second frame that assigns to at least one bit a different function than is assigned to the bit in the specified communication protocol.

A wall-mounted credential reader device according to one embodiment is adapted to be secured to a wall of a building and includes a credential reader adapted to receive credential data from credential devices presented to the wall-mounted credential reader device, an inertial sensor that generates sensor data indicative of an acceleration of the wall-mounted credential reader device, a processor, and a memory including a plurality of instructions stored thereon that, in response to execution by the processor, causes the wall-mounted credential reader device to receive sensor data generated by the inertial sensor, compare the received sensor data to reference data indicative of an acceleration of the wall-mounted credential reader device when the wall-mounted credential reader device is not moving, and generate a tamper alert in response to the comparison indicating that a deviation of the received sensor data from the reference data exceeds a threshold.

Disclosed herein are systems and methods for establishing a metadata exchange channel between a media playback system and a networked microphone system, wherein the networked microphone system comprises a networked microphone device and a networked microphone server. After establishing the metadata exchange channel, the media playback system experiences a metadata exchange triggering event. In response to experiencing the metadata exchange triggering event, the media playback system provides metadata to the networked microphone system via the metadata exchange channel.

A first relay device for installation at a vehicle, the first relay device comprising, a first memory and a first processor coupled to the first memory. The first processor being configured to receive a communication frame transmitted from another relay device. The first processor being configured to based on first relay information, in which destination address information expressing a destination address of a communication frame and a relay target bus are associated with each other, and based on the destination address information included in the received communication frame, identify the relay target bus. The first processor being configured to in a case in which the relay target bus of the received communication frame is not identified, output an anomaly notification signal indicating an anomaly to the other relay device.

Systems and methods disclosed herein include (i) receiving a voice command via at least one microphone of a networked microphone device, wherein the networked microphone device is configured to receive voice commands for a media playback system, and wherein the media playback system comprises the networked microphone device and a first playback device configured to play back content, (ii) determining that the networked microphone device is not configured to play back the content, (iii) in response to determining that the networked microphone is not configured to play back the content, determining that the first playback device is available to play back the content, (iv) causing the first playback device to play back the content, (v) determining that the first playback device is no longer available to play back the content, and (vi) selecting a second playback device to play back the content.

An unmanned aerial vehicle includes a communication controller configured to receive a control instruction from a remote control, a flight controller electrically connected to the communication interface through a communication interface and a universal serial bus (USB) interface, and a center board controller electrically connected to the flight controller through a controller area network (CAN) bus and electrically connected to a load of the unmanned aerial vehicle. The communication interface is configured to transmit the control instruction. The USB interface is configured to transmit upgrade data of the flight controller. The flight controller is configured to control the unmanned aerial vehicle according to the control instruction. The center board controller is configured to receive the control instruction from the communication controller and forward the control instruction to the load.