126results 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.

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 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).

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.

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).

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.

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.

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 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.

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.

Echo cancellation for bidirectional audio communication includes receiving, at an AEC system, audio signals from one or more microphones based at least in part on a near-end signal and a reproduced far-end signal. One or more loudspeakers reproduce the far-end signal. The AEC system operates at least in part with one or more filters to update an estimate of coefficients of a channel from the one or more loudspeakers to the one or more microphones. One or more control parameters that affect operation of the AEC system are configurable and are set to one or more values in a range of values based on an accuracy of the estimate of the coefficients of the estimated channel and characteristics of the near-end signal. The AEC system controls the one or more filters with different values of the one or more control parameters at different times.

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

Disclosed are a wireless power transmitter that considers interference between a plurality of wireless power transmitters in a multi-charging environment, and a wireless power transmission method therefor. Presented are an RF wireless power transmitter and an RF wireless power transmission method therefor, which are capable of minimizing interference between a plurality of RF wireless power transmitters and improving power transmission efficiency in a multi-charging environment. The wireless power transmitter included in a wireless charging system may comprise: a transmission unit for transmitting a power signal to at least one wireless power receiver; a detection unit for acquiring information related to an interference signal from another wireless power transmitter; and a control unit for controlling at least one parameter of the power signal on the basis of the information of the interference signal. The wireless power transmission method for the wireless power transmitter included in a wireless charging system may comprise the steps of: acquiring information related to an interference signal from another wireless power transmitter; controlling at least one parameter of a power signal on the basis of the information of the interference signal; and transmitting the parameter-controlled power signal to at least one wireless power receiver.

To provide a system and method for covariance smoothing.SOLUTION: A method and system improve signal processing by smoothing a covariance matrix of a multi-channel signal by setting a forgetting factor based on the bins of a band. The method and system for resetting smoothing based on transient detection are also disclosed. The method and system for resampling for smoothing between band transitions are also disclosed.SELECTED DRAWING: Figure 2

An inquirer-side circuit of an automotive Ethernet system includes: a hybrid circuit arranged to operably conduct data communication with a respondent-side circuit through an MDI circuit; a transmitting circuit coupled with a hybrid circuit and arranged to operably generate and provide a transmission signal to the hybrid circuit; a receiving circuit coupled with the hybrid circuit and arranged to operably receive and parse a received signal transmitted from the hybrid circuit to generate a data signal; a processing circuit coupled with the receiving circuit and arranged to operably process the data signal; a physical coding sublayer circuit coupled with the processing circuit and arranged to operably conduct a physical coding operation according to the instruction of the processing circuit to control the operations of the transmitting circuit; and an echo cancellation circuit coupled between the transmitting circuit and the receiving circuit, and arranged to operably generate an echo cancellation signal.

The embodiments described herein are directed at techniques to perform antenna / cable disconnection 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 coupling at a second device that is co-located with the first device. The second device may be coupled to a first end of a cable via a port, with 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, based on the amplitude of the parasitic signal over the predefined bandwidth, a disconnect status of one or more of the antenna and the cable.

A standard for near end crosstalk of a category 6A cable, including a registered jack 45 (RJ45), a clamp connected to the RJ45, a first attenuator and a second attenuator. The RJ45 includes a first signal twisted pair to transmit a first source signal and a second source signal, and a second signal twisted pair to transmit a third source signal and a fourth source signal. The clamp includes a first signal pair connector electrically connected to the first signal twisted pair, a second signal pair connector electrically connected to the second signal twisted pair, a first differential amplification circuit and a second differential amplification circuit. The first attenuator is electrically connected to the first signal pair connector. The second attenuator is electrically connected to the second signal pair connector. The second attenuator and the first attenuator are configured to detect the near end crosstalk.

System (100) for converting a bidirectional bus (212) into two unidirectional buses, comprising a first bus (222) which communicates data in a first direction and a second bus (224) which communicates data in a second direction, wherein the system (100) comprises: a first logic circuit (220), which is coupled to the first bus (222) and to the second bus (224) and configured to: Determine that the first bus (222) will be dominant over the second bus (224); and Generating an indication that communication is in the first direction, based on the determination that the first bus (222) becomes dominant before the second bus (224); and a second logic circuit (210) which reacts to the first logic circuit (220), which is coupled to the bidirectional bus (212) and configured to: Allowing communication between the bidirectional bus (212) and the first bus (222) based on the indication that the communication is in the first direction; and Blocking communication between the bidirectional bus (212) and the second bus (224) based on the indication that the communication is in the first direction, wherein the first logic circuit (220) comprises a timer circuit coupled to a logic element to generate the indication that the communication is in the first direction, wherein the first bus (222) is configured to transmit the data to an external device (150, 160), and wherein the second bus (224) is configured to receive the data from the external device (150, 160).

A voltage converter (110) for converting an input voltage to an output voltage. The voltage converter includes a controller (116) arranged to: superpose a power line communication signal onto a target DC output voltage to provide a target output voltage; compare the output voltage of the voltage converter with the target output voltage; and adjust operation of the voltage converter so as to drive the output voltage towards the target output voltage.

An echo canceller generates a microphone signal, updates an adaptive filter used for estimating an echo signal, generates a pseudo-echo signal based on an output signal and the adaptive filter, removes the pseudo-echo signal from the microphone signal and generates an echo-removed signal, determines whether a target speech signal is included in the echo-removed signal, adjusts a gain of the echo-removed signal based on a determination result, and generates the output signal based on the adjusted echo-removed signal.