Hitachi Astemo Ltd.

Renesas Electronics Corporation

Hitachi Automotive Systems, Ltd.

Masahiro Toyama

Hideyuki Sakamoto

Yuki Nakamura

Yutaka Uematsu

Hiroki Funato

Isao Hoda

Umberto Paoletti

Wen Zheng Li

Masafumi Watanabe

Aya Ohmae

Yoko Ohkubo

Kota Toida

Hiroshi Ikeda

Atsushi Nakamura

Masayoshi Takahashi

Hideki Osaka

Motoo Suwa

Mitsuhiro Masuda

Shinya Kawakita

Eiji Ichikawa

Hidetatsu Yamamoto

Toshiaki Takai

Takeshi Yamakawa

An electronic control device includes a circuit board having a plurality of connectors for connection to an external apparatus, and a housing made of a conductive material and adapted to accommodate the circuit board therein. The housing has an opening corresponding to the connectors, and at least one of a first housing component and a second housing component which constitute the housing has a comb-blade-shaped portion for partitioning the opening for each of the connectors.

Electronic control device

A signal transmission circuit includes: a circuit board stored in a housing; a connector which is mounted on the circuit board and includes a first signal terminal and a first ground terminal; and an integrated circuit which is mounted on the circuit board and includes a second signal terminal and a second ground terminal. The first signal terminal and the second signal terminal are connected to each other by a signal wiring arranged on the circuit board. The first around terminal and the second ground terminal are connected to each other by a ground wiring arranged in a predetermined range including a portion immediately above or immediately below the signal wiring in the circuit board. At least a part of the ground wiring immediately above or immediately below the signal wiring has a high impedance structure formed to be wider than the signal wiring and narrower than a combined width of the first signal terminal and the first ground terminal.

Signal transmission circuit and electronic control device

An electronic control device includes: a circuit board configured to be provided in a frame and to have a communication circuit capable of receiving or transmitting differential signals via a pair of signal pins; a connector configured to be electrically connected to the circuit board and to input signals transmitted from an electronic device outside the frame by single-end transmission to the communication circuit; and a noise cancellation signal output circuit configured to output noise cancellation signals corresponding to noise superimposed on the signals in the connector, wherein one signal pin of the pair of signal pins of the communication circuit is connected to the connector, and the other signal pin is connected to the noise cancellation signal output circuit.

An electronic control device includes a conductive casing; a circuit board which is provided in the casing, and on which an electronic component including an integrated circuit is mounted; and a conductive conductor component that is provided on the circuit board, is disposed at a position higher than the electronic component, and has an elongated shape, in which a distance between the conductor component and the casing is shorter than a distance between the conductor component and the circuit board.

An electronic control device comprising: a housing having conductivity; a circuit board that is arranged in the housing and has a first electronic component mounted on a mounting surface; an external connection portion that is electrically connected to the circuit board and is connectable to a device outside the housing; and a duplexing member that has conductivity and is arranged between an inner surface of the housing and the mounting surface of the circuit board, in which the duplexing member forms a cutout portion to avoid contact between the duplexing member and the first electronic component, and further forms a partition portion that partitions the external connection portion between the housing and the circuit board.

An electronic control device including a circuit substrate having a signal wiring and a ground wiring; at least one connector having a signal conductor and a ground conductor respectively connected to the signal wiring and the ground wiring of the circuit substrate on one end side and extending on the other end side; a housing including an accommodating portion that accommodates the circuit substrate and the at least one connector, in which a radio wave path through which a leakage electromagnetic wave propagates from one end on the circuit substrate side toward the other end on the side opposite to the circuit substrate side of the at least one connector is formed in an internal space at the periphery of the at least one connector; and a leakage electromagnetic wave attenuating structure provided between the housing and the at least one connector; where the leakage electromagnetic wave attenuating structure includes a plurality of conductors that are arrayed along a direction in which the leakage electromagnetic wave propagates from the one end of the at least one connector, and attenuate the leakage electromagnetic wave propagating through the radio wave path.

An electronic control device includes: a housing accommodating a board on which an electronic component is mounted; and a guard pattern formed on an outer peripheral portion of the board. The guard pattern and a ground pattern of a circuit in the circuit board are connected to each other in a vicinity of an intermediate point of fixed positions where an upper portion of the housing and a lower portion of the housing are fixed to each other.

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.

Signal transmission circuit and signal transmission system

An electronic control device includes a housing that stores a substrate on which an electronic component is mounted, a first capacitance unit formed between the housing and the electronic component, and a second capacitance unit formed between the housing and the substrate, in which a noise transmission path is formed between the housing and the substrate via the first capacitance unit and the second capacitance unit.

To provide an electronic control device capable of suppressing leakage of radio-frequency radiation noise, radiated from a noise source, to the outside. The electronic control device includes a radio-frequency circuitat least a part of which is driven at a radio frequency, a printed circuit boardon which a low-frequency circuitthat is driven at a low frequency is mounted, a housingmade of metal that includes therein the printed circuit boardtogether with the radio-frequency circuitand the low-frequency circuit, a plurality of radio-frequency connectorstofor transmitting and receiving signals related to the radio-frequency circuitmounted on the printed circuit boardto and from the outside of the housing, a low-frequency connectorfor transmitting and receiving signals related to the low-frequency circuitmounted on the printed circuit boardto and from the outside of the housing, and a partition wallfor suppressing propagation of radiation noise, radiated by driving the radio-frequency circuit, to the low-frequency connector

Provided is an electronic control unit, which includes a printed wiring board on which a semiconductor element is mounted, including a power supply pattern and a ground pattern which are formed on the printed wiring board and connected to the semiconductor element, at least one capacitance adjustment pattern which is formed on the printed wiring board, and a connection portion which is provided for each capacitance adjustment pattern and able to switch electrical connection between either the power supply pattern or the ground pattern and the capacitance adjustment pattern.

Electronic control device, vehicle, and method for manufacturing electronic control device

A clock control circuit includes a clock controller which disperses a harmonic of a clock signal in a used frequency band of a reception signal and controls an amplitude of a harmonic remaining in the used frequency band after the dispersion on a basis of a spread frequency used for the dispersion and a spread width of the harmonic.

Clock control circuit, demodulation device and spread spectrum method

To provide a clock control circuit, a demodulation device, and a spread spectrum method, which can reduce interference caused by a clock signal on which spread spectrum is performed when demodulating a signal. A clock controlleraccording to the present invention disperses a harmonic of a clock signal in a used frequency band of a reception signal and controls a harmonic remaining in the used frequency band after the dispersion. For example, the clock controllercontrols an amplitude of the harmonic on the basis of a spread frequency used for the dispersion and a spread width of the harmonic.

To improve electric characteristics of an electronic device. An electronic device includes a semiconductor device and a three-terminal capacitor mounted on the upper surface of a mounting substrate, the semiconductor device includes a power supply pad and a ground pad, the power supply pad and the ground pad are electrically connected with a power supply land and a ground land, respectively, and the power supply land and the ground land are allocated to a land line in an outermost periphery of the semiconductor device, Then, the power supply land and the ground land are electrically connected to the three-terminal capacitor by wirings formed on the upper surface of the mounting substrate.

Growing community of inventors

Tokyo, Japan

Masahiro Toyama