A battery monitoring system that monitors states of a plurality of batteries. The battery monitoring system includes a battery monitoring ECU and a plurality of battery monitoring devices. The battery monitoring ECU and the plurality of battery monitoring devices are connected to each other in any connection form of ring connection, daisy chain connection, or multi-drop connection.

This on-vehicle communication apparatus is configured to communicate with another on-vehicle communication apparatus by using one differential signal line, and includes: a high-band communication unit configured to generate a high-band signal including communication information and output the high-band signal to the differential signal line; and a low-band communication unit configured to generate a direct-current signal or a low-band signal and to output the direct-current signal or the low-band signal to the differential signal line.

Methods and systems are described for receiving signal elements corresponding to a first group of symbols of a vector signaling codeword over a first densely-routed wire group of a multi-wire bus at a first set of multi-input comparators (MICs), receiving signal elements corresponding to a second group of symbols of the vector signaling codeword over a second densely-routed wire group of the multi-wire bus at a second set of MICs, and receiving signal elements corresponding to the first and the second groups of symbols of the vector signaling codeword at a global MIC.

A deskew circuit for a differential signal is provided. A first common mode voltage generating circuit generates a first common mode voltage signal according to first and second differential input signals. A voltage buffer circuit is coupled to the first common mode voltage generating circuit and has an input impedance higher than a preset value, and buffers the first common mode voltage signal and the first and second differential input signals to generate a second common mode voltage signal, a third differential input signal, and a fourth differential input signal. A second common mode voltage generating circuit is coupled to the voltage buffer circuit and generates a third common mode voltage signal according to the third and fourth differential input signals. An output circuit generates a deskew output signal according to the third and fourth differential input signals and the second and third common mode voltage signals.

A communication system comprising: a control line transmitting a control signal for controlling charging of a battery mounted on a vehicle; a reference potential line connected to a reference potential of the vehicle serving as a reference for the control signal; a first PLC communication device connected to the control line and the reference potential line and superposing onto the control signal a differential signal having a higher frequency than the control signal so as to perform communication with an external power supply apparatus; and an inductive element which is provided at a point of connection between the reference potential line 1c and the reference potential or provided in the reference potential line and the inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal.

A transceiver circuit with a front-end and a back-end is provided. The front-end has terminals for coupling to a first and a second capacitor and tunable resistors coupled between the terminals and a reference terminal. The front-end is configured to receive receiver signals at the terminals utilizing a first setting for the resistors. The front-end is configured to generate a receiver data packet based on the receiver signals. The back-end is configured to check the receiver data packet for errors with respect to a defined tuning data packet. If an error is found, the back-end sets the resistors to a default setting. If no errors are found, the back-end sets the resistors to a second setting.

A system for transmitting control systems over twisted pair cabling. The system includes a first microcontroller transmitting a first single ended signal and receiving a second single ended signal. It also includes a first differential transmitter coupled to the first microcontroller for receiving the first single ended signal from the first microcontroller and converting it to a differential signal over a first differential line and a second differential line; and, a first differential receiver coupled to the first microcontroller for receiving a third differential line and a fourth differential line and converting it to a differential receiver signal, the differential receiver signal coupled to the second single ended signal. The system has a first transformer having first, second, third, and fourth center-tapped coils, the first differential line coupled to the center tap of the first coil, the second differential line coupled to the center tap of the fourth coil, the third differential line coupled to the center tap of the second coil, and the fourth differential line coupled to the center tap of the third coil, whereby the common mode of the first transformer is used to transmit a first control signal and to receive control signal responses over the twisted pair at the first processor.

Embodiments of the present disclosure utilizes the natural properties of RFI noise on a wireline link. Since differential RFI noise in the system has some correlation with the common mode noise on the cable, a replica of RFI noise can be regenerated by an adaptive filter based on information about the common mode noise. The replica RFI is subtracted from the equalizer output prior to the data decision circuitry or slicer. In this method, the system does not require expensive cable, nor does the equalizer suffer additional loss due to an RFI notch filter. Since RFI can be detected and mitigated, this information can also be coupled to safety systems to increase functional safety under high EMI conditions.

A signal transmission circuit that is connected to a communication unit by a signal wiring and performs signal transmission to/from the communication unit via the signal wiring includes: a direct-current supply unit that outputs a direct current with a variable output voltage, superimposes the direct current on the signal, and supplies the direct current to the communication unit via the signal wiring; a signal reception unit that receives the signal from the communication unit; and a signal processing unit that performs signal processing based on the signal received by the signal reception unit, wherein the signal reception unit has an equalizer function that adjusts a waveform of the signal to compensate for attenuation due to the signal wiring, and the output voltage is controlled based on an equalizer setting value used for control of the equalizer function.

A deskew circuit for a differential signal is provided. A first common mode voltage generating circuit generates a first common mode voltage signal according to first and second differential input signals. A voltage buffer circuit is coupled to the first common mode voltage generating circuit and has an input impedance higher than a preset value, and buffers the first common mode voltage signal and the first and second differential input signals to generate a second common mode voltage signal, a third differential input signal, and a fourth differential input signal. A second common mode voltage generating circuit is coupled to the voltage buffer circuit and generates a third common mode voltage signal according to the third and fourth differential input signals. An output circuit generates a deskew output signal according to the third and fourth differential input signals and the second and third common mode voltage signals.