There is provided a relay apparatus including a memory, and a processor coupled to the memory and the processor configured to receive a first packet including an identifier for indicating a content, determine whether or not the content indicated by the identifier included in the first packet is saved in a cache, transmit a second packet including a source address of the first packet and the identifier when it is determined that the content is not saved in the cache, and transmit a third packet including an address of the relay apparatus and the identifier when it is determined that the content is saved in the cache.

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 system for monitoring of integrity of a communication bus includes a communication bus; at least one transmitter configured to generate and transmit a signal on the communication bus; at least one receiver configured to receive a signal generated by the transmitter and transmitted on the communication bus; and a database of the transmitter. The database includes at least: device identification; expected rate of data transmittance; and device relative location along the link. The receiver is configured to receive the transmitted signal as well as any reflected signals arising from non-impedance matched section in the communication bus. A fault condition is identified by the occurrence of any of: a difference of the duration of the transmitted pulse from the duration of the received pulse; a difference of the measured transmitter rate of data transmittance from the database rate of data transmission.

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.

An operation method of a switch apparatus includes: obtaining configuration information of communication nodes connected to the switch apparatus; identifying ports connected to end nodes among the communication nodes based on the configuration information; identifying link statuses of the ports; and when the link statuses of the ports are a DOWN state during a predetermined period of time, changing an operation mode of the switch apparatus from a normal mode to a low-power mode.

A touch screen controller (TSC) includes: a front end circuit configured to send a control signal to a touch panel and to receive a touch signal from the touch panel; an algorithm processing circuit configured to process source data generated based on the touch signal according to a predetermined algorithm; a memory configured to store the source data and result data obtained as a result of processing the source data at the algorithm processing circuit; and a bus configured to transfer data among the front end circuit, the algorithm processing circuit, and the memory. The algorithm processing circuit includes: a buffer configured to temporarily store the source data or the result data and shared by at least two circuits; and a special function register (SFR) configured to store a setting value necessary for an operation of the algorithm processing circuit.

A display device has a wireless interface which permits communication between the display device and a device configured for communication with said display device; an interface to a bus system of a networked control system, the display device being configured as a bus slave in said bus system; a multi-color display element for displaying the operating state of at least one station; and a controller configured to control the multi-color display element and to control the communication via the wireless interface and the bus-system interface.

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 system and method for low-cost, fault tolerant, EMI robust data communications, particularly for an EV environment.

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.