The present invention discloses a transceiver apparatus having phase-tracking mechanism. A phase detection circuit of a receiver circuit performs sampling and phase detection on an input data signal according to a sampling clock signal to generate a phase detection result. A proportional gain circuit of the receiver circuit applies a proportional gain operation on the phase detection result to generate a phase adjusting signal. A CDR circuit of the receiver circuit receives a source clock signal to generate the sampling clock signal and performs phase-adjusting according to the phase adjusting signal. The integral gain circuit apples an integral gain operation on the phase detection result to generate a frequency adjusting signal. The source clock generating circuit receives a reference clock signal to generate the source clock signal and perform frequency-adjusting according to the frequency adjusting signal. The transmitter circuit performs signal transmission according to the source clock signal.

An electronic device includes a side surface member, a wireless communication circuit, and a switch circuit. The side surface member includes a first conductive portion coupled to the wireless communication circuit and the switch circuit, a second conductive portion coupled to the switch circuit, and a first non-conductive portion disposed between the first conductive portion and the second conductive portion. The switch circuit is controlled to be in at least one of a first state, a second state, and a third state, based on a first frequency of a first operating signal supplied by the wireless communication circuit. The switch circuit is configured to couple the second conductive portion to the wireless communication circuit, in the first state, and to couple the second conductive portion to the first conductive portion, in the second state.

A reduced-complexity Internet of Things sensor is disclosed. An example apparatus comprises memory storing one or more sensor event messages, a radio configured to determine a sensor event, a counter configured to output incremental counter states, and a control circuitry. The control circuitry may be in communication with the memory, the radio, and counter, and the sensor. The control circuitry may be configured to determine, based on the sensor event, a select sensor event message of the one or more sensor event messages. The control circuitry may be further configured to output, via the radio signal, a packet comprising the select event message and an indication of a counter state associated with the sensor event message.

A reduced-complexity Internet of Things sensor is disclosed. An example apparatus comprises memory storing one or more sensor event messages, a radio configured to determine a sensor event, a counter configured to output incremental counter states, and a control circuitry. The control circuitry may be in communication with the memory, the radio, and counter, and the sensor. The control circuitry may be configured to determine, based on the sensor event, a select sensor event message of the one or more sensor event messages. The control circuitry may be further configured to output, via the radio signal, a packet comprising the select event message and an indication of a counter state associated with the sensor event message.

A single audio interface signal switching circuit and a single audio interface switching device are provided by the embodiments of the present disclosure, which sets only one single audio interface and uses a working mode switching module to control a driver chip to generate different drive signals, in order to control working states of an audio signal output module, a time code input module, and a time code output module electrically connected with the driver chip. Since there is only one audio interface, and a working mode of the single audio interface switching device is controlled by the working mode switching module, so that a volume of the single audio interface switching device is reduced.

A single audio interface signal switching circuit and a single audio interface switching device are provided by the embodiments of the present disclosure, which sets only one single audio interface and uses a working mode switching module to control a driver chip to generate different drive signals, in order to control working states of an audio signal output module, a time code input module, and a time code output module electrically connected with the driver chip. Since there is only one audio interface, and a working mode of the single audio interface switching device is controlled by the working mode switching module, so that a volume of the single audio interface switching device is reduced.

Disclosed is a sensor for detecting the proximity of smart devices previously connected to the sensor using the IEEE 802.11 protocols. Importantly, the sensor does not operate using a Bluetooth® connection, which would require the smart devices previously connected to the sensor using the IEEE 802.11 protocols to also have Bluetooth® protocols enabled. Enabling such Bluetooth® protocols uses more battery than having the IEEE 802.11 protocol adapter enabled. The sensor references a list of previously connected smart devices and attempts to connect with any in range, if none can be connected to, the sensor emits an audible alarm signal. Further, no application is required for the sensor to operate.

Disclosed is a sensor for detecting the proximity of smart devices previously connected to the sensor using the IEEE 802.11 protocols. Importantly, the sensor does not operate using a Bluetooth® connection, which would require the smart devices previously connected to the sensor using the IEEE 802.11 protocols to also have Bluetooth® protocols enabled. Enabling such Bluetooth® protocols uses more battery than having the IEEE 802.11 protocol adapter enabled. The sensor references a list of previously connected smart devices and attempts to connect with any in range, if none can be connected to, the sensor emits an audible alarm signal. Further, no application is required for the sensor to operate.

A transceiver system includes one or more groups of transceivers. The locations of the transceivers are initially unknown. During deployment, the location of each transceiver in the group is automatically estimated by the remaining transceivers in the group. Once the locations of the transceivers in the group are estimated, deployment of the transceivers is complete. The transceivers may estimate location attributes of mobile transceivers within a vicinity of the transceivers in the group.

An electronic device including a second wireless communication circuit providing second radio access technology (RAT) and a communication processor controlling the second wireless communication circuit are provided. The communication processor may allocate a detection symbol for detecting an external object, may detect the external object from the allocated symbol, and may control the second wireless communication circuit based on the detected external object.