The present invention relates to a method for forming a mobile ad-hoc voice network for operation in a rapidly changing environment, which comprises (A) assigning to a plurality of devices a group ID and to each of said devices a respective serial number (B) providing within each of said devices an algorithm for (B.1) calculating, based on individual neighbors data that are transmitted by each of the network devices within slots of a TDMA cycle, a structure of the network, including determination of one or more relay devices (B.2) calculating a leader for the network and (B.3) calculating a synchronizer for the network (C) transmitting by each of said devices within slots of said TDMA cycle the respective neighbors of that device (D) transmitting by the synchronizer of said network periodical synchronization data within slots of the TDMA cycle, and propagating the synchronization data to all the network devices upon, completion of each of said TDMA cycle, applying said algorithm by each of said devices to determine and possibly update the structure of the network, the relays of the network, and the leader of said network (E) within a period of said TDMA cycle, synchronizing each of the devices based on said synchronization data, while upon determination that the synchronizer is missing, determining by each device a new synchronizer for the system and (F) sending by devices of said network within a plurality of said TDMA slots voice data in digital form.

In the optical transport system a transport frame generator divides a transport frame accommodating plural client signals into plural transmission signals. Subcarrier transmission units convert the signals into optical signals using different optical carriers and transmit the converted optical signals. Subcarrier reception units receive the transmitted optical signals and convert the optical signals into reception signals. A transport frame termination unit combines the reception signals to restore the transport frame. A time-demultiplexing processor time-demultiplexes the restored transport frame to be separated into the client signals. A time slot control unit determines a new time slot allocation when time-multiplexing the client signals in the transport frame and stops supply of electric power to a subcarrier transmission unit and a subcarrier reception unit that transmit and receive an optical signal to which the client signals are not allocated.

The present disclosure provides a method and system for synchronous audio playback of TWS earphones, The TWS earphones include a master earphone and a slave earphone; both the master earphone and the slave earphone include a first timer, a second timer, an audio DAC, and an audio playback phase-locked loop; the first timer and the second timer of the master earphone are respectively used to collect a real-time audio playback position of the master earphone and a public Bluetooth clock; the first timer and the second timer of the slave earphone are respectively used to collect a real-time audio playback position of the slave earphone and a local Bluetooth clock; the slave earphone calibrates audio data in the audio DAC, and the first timer and the audio playback phase-locked loop of the slave earphone, to achieve synchronization between the master earphone and the slave earphone.

A method for generating a schedule for the transmission of time-triggered, TT, messages in a network, wherein said network communicates TT messages according to said schedule and based on a global, network-wide time, wherein said network communicates rate-constrained, RC messages, wherein for each of said RC messages real-time requirements are provided, wherein the method comprises: Step 1: setting the transmission time of all TT messages which are communicated in the network, and Step 2: executing a search function to find a set of TT transmission times so that the real-time requirements of all RC messages are fulfilled, and when all real-time requirements or at least real-time requirements for defined RC messages are fulfilled, generating in Step 3: the schedule based on the transmission times retrieved in Step 2, or executing Step 2 again when not all real-time requirements or not all real-time requirements for the defined RC messages are fulfilled.

Systems, methods, and apparatuses are discussed that enable robust, high-speed communication of sensor data. One example system includes a sensor bus, an electronic control unit (ECU), and one or more sensors. The ECU is coupleable to the sensor bus and configured to generate a synchronization signal, and is configured to output the synchronization signal to the sensor bus. The one or more sensors are also coupleable to the sensor bus, and at least one sensor of the one or more sensors is configured to sample sensor data in response to the synchronization signal and to output the sampled sensor data to the sensor bus.

A method of communication in a vehicle network is provided. An example method includes transmitting a network allocation map in a TDMA cycle, indicating reservation of time slots in the TDMA cycle. The method further includes transmitting a synchronization signal in the TDMA cycle, to synchronize the timing of nodes in the vehicle network. Each of the reserved time slots is identified by at least a network ID of a transmitting node in the vehicle network, and a slot type comprising one of a low latency traffic slot, and a bulk traffic slot. Further, the low latency traffic slots are repeated in the TDMA cycle at least as frequently as a guaranteed QoS latency parameter. Further, the bulk traffic slots are at least as long as a guaranteed QoS throughput parameter.

An audio system, method, and computer program product for synchronizing device clocks. The systems, methods and computer program product can establish a first isochronous data stream between a peripheral device and a first device and establish a second isochronous data stream between the first device and a second device to send data between the first and second device. As the two data streams may rely on two different device clocks, e.g., one clock which defines the timing for the first isochronous data stream and a second clock which defines the timing for the second isochronous data stream, the systems, methods, and computer program disclosed herein are configured to maintain synchronization and/or synchronize the first clock with the second clock to prevent data loss due to clock drift.

A method for performing time-synchronization between a master clock of a master unit and a plurality of slave clocks of a corresponding plurality of slave units includes sending a forward time-synchronization message indicative of the master clock from the master unit to the plurality of slave units, in order to enable the plurality of slave units to time-synchronize their respective slave clocks with the master clock. The method also includes receiving a reverse time-synchronization message indicative of the respective slave clock from each of the plurality of slave units at a first validator. The method also includes time-synchronizing a plurality of validator clocks of the first validator to the corresponding plurality of slave clocks using the reverse time-synchronization messages from the plurality of slave units, and validating the time-synchronization between the plurality of slave clocks at the first validator based on the plurality of validator clocks.

Multiplexer (100) according to the present invention includes: an input unit (11) to which a plurality of image signals based on a first data communication standard are input, the image signals being acquired by respective imaging devices (2); an output unit (14) that outputs an image signal based on a second data communication standard having a data transfer rate lower than that of the first data communication standard; and a storage unit (12) that temporarily buffers the image signals input from the input unit (11). With such a multiplexer 100, it is possible to collectively convert the image data acquired by a plurality of imaging devices adopting a certain data communication standard into another data communication standard and suppress the data transfer delay caused by the conversion.

A system includes a device coupled to a processing device. The processing device is to receive a timing signal associated with a synchronized time. The processing device is further to synchronize a rate limiter of the device to the synchronized time responsive to receiving the timing signal, wherein the rate limiter is configured to schedule one or more workloads at a respective rate. The processing device is to receive a request to execute the one or more workloads, the request comprising a rate to execute each workload of the one or more workloads. The processing device is to execute the one or more workloads at the respective rate upon synchronizing the rate limiter.