219results about "Line-transmission" patented technology

System and method for improving the shaving experience by providing improved visibility of the skin shaving area. A digital camera is integrated with the electric shaver for close image capturing of shaving area, and displaying it on a display unit. The display unit can be integral part of the electric shaver casing, or housed in a separated device which receives the image via a communication channel. The communication channel can be wireless (using radio, audio or light) or wired, such as dedicated cabling or using powerline communication. A light source is used to better illuminate the shaving area. Video compression and digital image processing techniques are used for providing for improved shaving results. The wired communication medium can simultaneously be used also for carrying power from the electric shaver assembly to the display unit, or from the display unit to the electric shaver.

Methods, systems, and apparatus, including computer programs encoded on computer storage media relate to a method for acoustic echo cancellation. The system inputs one or more signal representations into an acoustic echo cancellation network comprising one or more network blocks to generate a mask, each network block comprising one or more convolutional blocks, each convolutional block comprising one or more neural networks. The system combines the mask and a near-end audio signal representation to generate an echo-cancelled audio signal representation. The system generates an echo-cancelled audio signal based on the echo-cancelled audio signal representation.

Even when a speech is small, the speech is allowed to be detected and an echo is allowed to be appropriately suppressed. Whenever a sample point of a reception signal transmitted through a receiving signal path that transmits a signal to a speaker is acquired, an optimal mask is sequentially generated or selected from base masks as one or a plurality of masks generated based on a learning signal based on a reception signal acquired within a predetermined period before a time point at which the sample point was acquired. Whenever the optimal mask is selected, whether a double-talk state is present is sequentially detected based on a result of comparing an input signal with the optimal mask. When detecting that a speech is not input to a microphone and the reception signal includes a speech, a process of suppressing an echo is sequentially performed on the input signal.

To provide a charge control device of an electric vehicle and a method for the same in which PLC communication (Power Line Communication) with a charger can be prevented from being interrupted in the process of charging a battery of the electric vehicle.SOLUTION: A charge control device 130 includes: a communication unit 20 which performs the PLC communication with the charger; and a controller 40 which requests the charger for a charging request current, detects a round trip time required until reception of a response for the request, and controls the charging request current based on the detected round trip time.SELECTED DRAWING: Figure 3

A two-wire transmitter is provided. The two-wire transmitter is connected to an external circuit via two transmission lines, uses the external circuit as a power source, and outputs a current signal to the external circuit. The two-wire transmitter includes a measurement data processing circuit connected to a sensor that outputs an electric signal based on measurement data, outputs a first signal based on the measurement data; a current output circuit that determines the current signal based on the first signal; and a shunt adjustment circuit that determines a circuit voltage of the two-wire transmitter based on the first signal.

The embodiments described herein are directed to techniques for performing antenna / cable separation using co-located communication devices. A first device may transmit a reference signal over a predetermined bandwidth. A parasitic signal corresponding to the reference signal may be received via a coupling at a second device co-located with the first device. The second device may be coupled via a port to a first end of a cable, the second end of the cable configured to connect to an antenna. A processing device may determine a ratio of amplitudes of the parasitic signal over a predefined bandwidth. The processing device may then determine a separation status of one or more of the antenna and the cable based on the amplitude of the parasitic signal over the predefined bandwidth.

The disclosure relates to a method and device for detecting at least one target, comprising: transmitting a sensing signal; obtaining a first channel estimation result corresponding to an echo signal of the sensing signal; obtaining a second channel estimation result based on the first channel estimation result; based on the first channel estimation result and the second channel estimation result, performing over-threshold detection based on a threshold value being used to obtain an index subset related to target(s); and obtaining an over-threshold detection result based on the index subset related to the target(s).

A photovoltaic system and a communication method therefor are provided. The communication method includes: sending, by each slave, a report signal to a master; monitoring for receipt of a response signal from the master; and if at least one slave receives the response signal, the corresponding slave executes a corresponding action based on the response signal. Therefore, communication between the master and each slave is achieved in a mode that each slave actively sends the report signal to the master, and the master is prevented from adopting a roll call query mode in which the master actively sends a request signal to the slaves, such that occupation of bus resources by the master is reduced.

The present disclosure describes an isolated communication device and a multi-level encoding method therefor. The isolated communication device includes a transceiver (10) and an isolation circuit (20). The isolation circuit (20) includes an isolation transformer (T1) having a driver-side winding and a line-side winding, a first serial resistor (R11) that is coupled with a first end of the driver-side winding, and a second serial resistor (R12) that is coupled with a second end of the driver-side winding. The transceiver (10) transmits a differential signal through the first serial resistor (R11) and the second serial resistor (R12), and receives the differential signal, bypassing the first serial resistor (R11) and the second serial resistor (R12). The isolated communication device reduces power consumption by arranging serial resistors at the driver side of the isolation transformer, and improve impedance matching and strengthen bulk current injection (BCI) immunity by arranging serial resistors at both sides of the isolation transformer.

The embodiments described herein are directed to techniques for performing antenna / cable separation using co-located communication devices. A first device may transmit a reference signal over a predetermined bandwidth. A parasitic signal corresponding to the reference signal may be received via a coupling at a second device co-located with the first device. The second device may be coupled via a port to a first end of a cable, the second end of the cable configured to connect to an antenna. A processing device may determine a ratio of amplitudes of the parasitic signal over a predefined bandwidth. The processing device may then determine a separation status of one or more of the antenna and the cable based on the amplitude of the parasitic signal over the predefined bandwidth.

A method and apparatus for processing a signal. An implementation of the method includes: acquiring a reference signal of a to-be-tested voice, the reference signal being a signal output to a voice output device, where the voice output device outputs the to-be-tested voice after obtaining the reference signal; receiving, from a voice input device, an echo signal of the to-be-tested voice, the echo signal being a signal of the to-be-tested voice collected by the voice input device; performing signal preprocessing on the reference signal and the echo signal respectively; and inputting the processed reference signal and the processed echo signal into a pre-trained time delay estimation model, to obtain a time difference between the reference signal and the echo signal output by the time delay estimation model. ---

Connection and disconnection between a termination resistor of a communication circuit and a transmission path are switched without causing a communication error. Communication circuit (6A) includes communication part (10), termination resistor (12), switch (13), detector (15), and controller (16). Communication part (10) is provided in device (2) connected to transmission path (3), and communicates with another communication part (10) provided in another device (2) connected to transmission path (3) through transmission path (3). Termination resistor (12) is connected to transmission path (3). Switch (13) switches between connection and disconnection between termination resistor (12) and transmission path (3). Detector (15) detects total resistance value (R1) of all resistors connected to transmission path (3) in a state where termination resistor (12) and transmission path (3) are connected. Controller (16) controls switching between connection and disconnection between termination resistor (12) and transmission path (3) with switch (13) based on a result of the detection of detector (15).

In an identification information receiving device connected to an identification information transmitting device by a power line, a measurement value obtainment unit obtains a measurement value of an electric current or a voltage in the power line. An identification information reading unit reads, as binary data, identification information defined by a plurality of bits and superimposed on the electric current or the voltage in the power line by the identification information transmitting device, by determining whether the measurement value corresponding to each bit of the identification information is greater or less than a determination threshold value (other than 0). A threshold value setting unit compares the latest determination threshold value and the measurement value corresponding to each bit of the identification information superimposed on the electric current or the voltage in the power line, calculates two representative values that are a representative value of the measurement value greater than or equal to the determination threshold value and a representative value of the measurement value less than the determination threshold value, and sets the determination threshold value to an intermediate value between the two representative values as an updated determination threshold value.

Methods and system for one-line synchronous interface are described. A timing device including a first buffer can be connected to a line card including a second buffer. The timing device can control the first buffer to output a synchronization pulse to the line card periodically at a time interval. For each output of the synchronization pulse, the timing device can switch the first buffer from a first output mode to a first input mode. Under the first input mode, the timing device listen for incoming data on the trace. The line card can receive the synchronization pulse periodically at the time interval. For each receipt of the synchronization pulse, the line card can switch the second buffer from a second input mode to a second output mode. Under the second output mode, the line card can transmit outgoing data on the trace.

An Ethernet device includes a link test pulse (LTP) generator circuit, a hybrid circuit, a transmit (TX) circuit, a receive (RX) circuit, and a post-processing circuit. The LTP generator circuit generates an LTP signal that is compliant with an IEEE 802.3 standard. The TX circuit transmits the LTP signal to an Ethernet cable through the hybrid circuit. The RX circuit receives an RX signal from the hybrid circuit during a period in which the LTP signal is transmitted through the hybrid circuit. The post-processing circuit performs a cable diagnosis of the Ethernet cable according to the RX signal.

A data canceler is disclosed herein. The data canceler includes a first inverter circuit. The first inverter circuit is configured to generate a first inverted data signal based on an inversion of a first unwanted data signal supplied via a first input terminal of a data transmission network. The data canceler includes a passive network comprising a plurality of passive components arranged between an output terminal of the transmission network and an output of the first inverter circuit. The passive network is configured to receive, via the output terminal of the transmission network, a mixed data signal comprising a target data signal and the first unwanted data signal, and further combine the first inverted data signal and the mixed data signal across the passive components to cancel the first unwanted data signal in the mixed data signal.

An interference sound suppressing device includes: an input signal acquiring part that acquires an input signal obtained from a microphone; a reference signal acquiring part that acquires a reference signal; a data inserting part that increases an amount of data of the input signal to be larger than an amount of data of the reference signal by inserting a plurality of zeros into the input signal acquired; an interference sound suppressing part that suppresses an interference sound component included in the input signal by using the input signal having the amount of data increased and the reference signal acquired; a data deleting part that restores the amount of data of the input signal to an original amount by deleting the plurality of zeros inserted from the input signal in which the interference sound component is suppressed; and an output part that outputs the input signal having the amount of data restored.

A vehicle circuit structure supplies electric power to a plurality of electric components mounted on a vehicle and transmits a communication signal to the electric components. The vehicle circuit structure includes a first control unit connected to a power supply, a plurality of second control units connected to the first control unit, a plurality of first wires connecting the first control unit to the second control units in a one-to-one manner without branching, and a plurality of second wires connecting each of the plurality of second control units to the electric component. The first control unit includes a first processing device that controls supply of electric power to each of the second control units and transmission of a communication signal to each of the second control units. Each of the plurality of first wires includes a power supply line, a ground line, and a signal line.

A device, system and method for cancelling echo at electronic devices are provided. The device comprises: a send path comprising a send input and output; a receive path comprising a receive input and output; an echo estimator engine that determines an estimate of echo, on the send path; a subtractor engine subtracts the estimated echo from a send signal received at the send input; a delay buffer engine; and an adder. The delay buffer engine provides, to the adder engine, a delayed-attenuated portion of a receive signal, received at the receive input, delayed by a given delay period corresponding to at least a delay of the echo between the receive path and the send input. The adder engine adds the delayed-attenuated portion to the send signal. The echo estimator engine determines the estimated echo using at least the delayed-attenuated portion of the receive signal added to the send signal.

Embodiments of the present disclosure provide interface conversion apparatuses, communication systems, and echo cancellation methods and apparatuses. The interface conversion apparatus includes a conversion component, a control component, an impedance matching component and a switch component; a first port of the conversion component connected to a two-wire communication system, a second port of the conversion component selectively connected to the control component or an input end of a four-wire communication system through the switch component, a third port of the conversion component connected to an output end of the four-wire communication system, a fourth port of the conversion component connected to an output end of the impedance matching component, and the impedance matching component connected to the control component.

Infotainment system (100, 200, 300) for a motor vehicle, the system comprising: a navigation system (202); an entertainment system (110, 204); an audio output device (108, 206); and a control system (102) coupled to the navigation system (202), the entertainment system (110, 204), and the audio output device (108, 206), controlling access to the audio output device (108, 206) by the navigation system (202) and the entertainment system (110, 204), comprising a call detection device (212) that determines whether a call is being conducted, alters the operation of the audio output device (108, 206) if a call is being conducted, and alters the operation of the audio output device (108, 206) by delaying the playback of a navigation announcement on the audio output device (108, 206) during at least a portion of the call by delaying the navigation announcement for a portion of the call until a location-based limit is reached at which the motor vehicle has reached a specified minimum distance before a corresponding driver action should be taken,The navigation announcement is preceded by an introduction if the call is interrupted by the navigation announcement.

A device includes first and second terminals configured to be respectively connected to first and second conductors of a differential two-wire bus. First and second identical resistive dividing bridges are connected between a reference node and respectively first and second nodes. Third and fourth identical resistive dividing bridges are connected between a supply node and respectively the first and second nodes. A reading circuit is configured to determine a binary state of the bus from the currents flowing through transistors of the reading circuit.

This disclosure relates to simplified frequency domain filter adaptation windows. For example, a physical layer transceiver for a data channel includes: a receiving circuit means configured to receive a signal on the data channel; a transmitting circuit means configured to transmit the signal to the data channel; and an adaptive filtering circuit means coupled to the receiving circuit means and the transmitting circuit means, and configured to filter the data channel by operating on input frequency domain data samples to output filtered data samples. The adaptive filtering circuit means includes an error sample generation circuit means configured to generate error samples representing the difference between a target response and the filtered data samples; an arithmetic-only circuit means configured to approximately calculate a windowing function for operating on the error samples; and an output sample generation circuit means configured to operate on the windowed error samples to provide an output of filtered data samples.

The invention relates to an assembly (1) of non-galvanically coupled networks (2, 3), having two electrical networks (2, 3) and having a coupling device (4) via which the electrical networks (2, 3) which are each galvanically connected to the coupling device (4) by means of two connecting points (10, 11 and 12, 13) are coupled to one another without being galvanically interconnected. The coupling device (4) consists of two active electrical dipoles (5, 6) which are interconnected via at least one data link (7), can be operated both as a source and as a sink, and have measurement means (8, 9) for current and voltage. The dipoles are designed to provide current and / or voltage for the respective electrical network (2, 3) which are galvanically connected thereto in accordance with a target value received for this purpose from the respective other active electrical dipole (5, 6), and to transmit the current and / or voltage values subsequently measured at the connecting points (10, 11 or 12, 13) to the respective other active electrical dipole (5, 6) as a target value for the source / sink formed by this dipole (5, 6).

The present invention relates to a charging control apparatus and method of an electric vehicle. It can include requesting a charging device for a current required for charging in a state where a power line communication (PLC) is established with the charging device, detecting a round trip time required to receive a response to the request, and adjusting a switching period of a multi-stage inverter based on the round trip time, thereby preventing an interruption in the PLC with the charging device in a process of charging a battery of the electric vehicle.

An electronics circuit, comprising: a master controller; and a plurality of modules; wherein the master controller comprises: a timing signal generator arranged to generate a timing signal; and a data signal generator arranged to generate a data signal; wherein the master controller is arranged to generate a combined signal based on both the timing signal and the data signal; and wherein the master controller is arranged to broadcast the combined signal to the plurality of modules. By broadcasting the timing signal to the modules along with the data signal, the available bandwidth is effectively utilised without requiring a large number of separate signal paths to each module and without time multiplexing the signals. Thus accurate time synchronisation can be achieved such that the system can operate effectively at a high switching frequency. As the switches on the modules are not directly controlled by the master controller, the system provides a decentralised architecture in which processing of the received signals can be done locally on each module.

The present invention relates to an apparatus for setting a communication ID of an energy storage system, the apparatus comprising: a power converter for selecting one power line from among a plurality of power lines to supply power through the selected power line; and battery managers which are sequentially connected to the power converter and are operated by the power selectively supplied through the one power line selected from among the plurality of power lines, wherein the power converter may communicate with one battery manager which is operated by the supplied power from among the battery managers.

A power converter and a data collector. A power line communication (PLC) chip in the power converter can transmit a data signal on a first frequency band, and transmit a control signal on a second frequency band. Signals of different types can be transmitted on the first frequency band and the second frequency band, and the first frequency band and the second frequency band do not overlap each other. Therefore, interference between the signals of different types can be effectively avoided, and simultaneous transmission of the signals of different types can be implemented. This not only effectively enhances flexibility of signal transmission, but also effectively avoids a transmission delay caused by a transmission conflict between the signals of different types in the PLC system, ensuring high timeliness for the data collector to perform data query and scheduling control on the power converter.