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    • 102. 发明授权
    • Communication apparatus for transmitting and receiving communication
signals through common transmission line
    • 通信装置,用于通过公共传输线路发送和接收通信信号
    • US5355390A
    • 1994-10-11
    • US700698
    • 1991-05-16
    • Kiyoshi YamamotoYoshihisa SatoSatoshi SuzukiMasayuki Kobayashi
    • Kiyoshi YamamotoYoshihisa SatoSatoshi SuzukiMasayuki Kobayashi
    • H04B15/00H03K4/94H03K17/66H04L5/00H04L25/02H04L25/08H04B3/00
    • H04L25/0286H03K17/66H03K4/94H04L25/0274H04L25/0292
    • A transmitting circuit is provided which includes a control circuit for transmitting and receiving a communication signal. Transmit information is modulated into a trapezoidal wave signal using a waveform shaping circuit. A communication signal is first generated on the basis of the trapezoidal wave signal and transmitted to a first transmission line. From this communication signal, a second communication signal is generated having an inverted polarity waveform shape relative to the first communication signal. This inverted polarity triangular wave signal is, in turn, output from a second transmission line BUS-. In addition, a receiving circuit is provided for receiving like signals from other communication devices which share the first and second transmission lines BUS+ and BUS-. The receiving circuit includes a comparator circuit for demodulating received signals on the transmission lines to generate square wave equivalent signals which a processing unit can logically interpret. Because communication signals are transmitted (received) and derived in the described manner, they are not subject to adverse effects, such as can result from fluctuation of GND potential levels and power supply differences amongst remote communication systems. Furthermore, because an inverted triangular waveform is generated in addition to, and on the basis of, a regular, modulated triangular wave signal, phase shift problems are avoided and radiation of harmonics noise is favorably reduced even at intermediate, or higher, transmission rates.
    • 提供一种发送电路,其包括用于发送和接收通信信号的控制电路。 使用波形整形电路将发送信息调制成梯形波信号。 首先根据梯形波信号生成通信信号,并将其发送到第一传输线。 从该通信信号,产生具有相对于第一通信信号的反极性波形形状的第二通信信号。 反转的极性三角波信号又从第二传输线BUS-输出。 此外,提供接收电路用于接收来自共享第一和第二传输线BUS +和BUS-的其它通信设备的类似信号。 接收电路包括用于解调传输线上的接收信号的比较器电路,以产生处理单元可逻辑解释的方波等效信号。 由于以所述方式发送(接收)和导出通信信号,所以它们不会受到不利影响,例如可能由远程通信系统之间的GND电位波动和电源差异引起。 此外,由于除了规则的调制三角波信号之外并且基于规则的调制三角波信号产生倒三角波形,避免了相移问题,甚至在中间或更高的传输速率下也有利地降低了谐波噪声的辐射。
    • 104. 发明授权
    • Apparatus for controlling engine
    • 发动机控制装置
    • US4683858A
    • 1987-08-04
    • US863938
    • 1986-05-16
    • Yoshihisa SatoMasumi KinugawaSusumu AkiyamaToshitaka YamadaTiaki MizunoAtsushi Suzuki
    • Yoshihisa SatoMasumi KinugawaSusumu AkiyamaToshitaka YamadaTiaki MizunoAtsushi Suzuki
    • F02D45/00F02D41/00F02D41/18G01F1/696G01F1/698F02D41/34G01M15/00
    • G01F1/6965F02D41/187G01F1/698G01F1/6986
    • In an apparatus for controlling an engine, as an air flow sensor for measuring intake air flow quantity, a heater resistor having temperature-resistance characteristic and a temperature sensitive resistor for sensing air temperature are provided in an intake passage, and heating electric power is supplied to the heater resistor in response to a start signal generated periodically. The heating electric power is cut off when the temperature of the heater resistor is raised to a specified reference temperature predetermined in accordance with the air temperature, so that an output signal indicative of the time width in which the heating electric power is supplied is applied to an electronic control unit to measure air flow quantity therefrom. Further, compensation coefficient stored in a memory is derived in correspondence to the intake air temperature sensed by the temperature sensitive resistor, and the output signal is compensated for by the compensation coefficient to compensate the measured air flow quantity. Based on the compensated air flow quantity, fuel injection quantity, ignition timing or the like is computed in the electronic control unit.
    • 在用于控制发动机的装置中,作为用于测量进气流量的气流传感器,具有耐温特性的加热电阻器和用于感测空气温度的感温电阻器设置在进气通道中,并且供应加热电力 响应于周期性地产生的启动信号到加热器电阻器。 当加热电阻器的温度升高到根据空气温度预定的指定参考温度时,加热电力被切断,从而将表示加热电力的时间宽度的输出信号施加到 电子控制单元,用于测量气流量。 此外,存储在存储器中的补偿系数相应于由感温电阻感测的进气温度导出,并且通过补偿系数补偿输出信号以补偿测量的空气流量。 基于补偿空气流量,在电子控制单元中计算燃料喷射量,点火正时等。