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    • 1. 发明授权
    • Error rate measuring apparatus
    • 误差率测量仪
    • US5652760A
    • 1997-07-29
    • US554790
    • 1995-11-07
    • Syugo YamashitaYoshikazu TomidaTerumasa TokumotoMinoru HondaToshihiro Kubo
    • Syugo YamashitaYoshikazu TomidaTerumasa TokumotoMinoru HondaToshihiro Kubo
    • H04N19/00H04B1/16H04L1/00H04L1/24H04N7/20H04N19/42H04N19/423H04N19/44H04N19/65H04N19/70H04N19/89H04N21/61H04N21/647G06F11/00
    • H04L1/24H04B1/16
    • An error rate measuring apparatus includes a demodulator, and data from the demodulator is applied to a decoding circuit in which an error bit number is evaluated for each of a BIC portion and a packet portion. In the BIC portion, if a synchronization is settled, the error bit number is evaluated by comparing received BICs and a predetermined BIC pattern, and if the synchronization is not settled, the error bit number is determined as eight (8) bits. In the packet portion, if a frame synchronization is settled and decoding is successful, the error bit number is calculated by comparing data before decoding and data after decoding with each other. If the frame synchronization is settled but the decoding is unsuccessful, a presumed error bit number is set according to the number of packets being decoded successfully in a first time horizontal direction, and if the frame synchronization is not settled, a predetermined error bit number is set. In each of the BIC portion and the packet portion, a bit error rate is calculated on the basis of the error bit number for each measurement range, and displayed on a monitor.
    • 错误率测量装置包括解调器,并且来自解调器的数据被应用于对BIC部分和分组部分中的每一个评估错误比特数的解码电路。 在BIC部分中,如果同步被确定,则通过比较所接收的BIC和预定的BIC模式来评估错误比特数,并且如果同步未被确定,则错误比特数被确定为八(8)比特。 在分组部分中,如果帧同步被确定并且解码成功,则通过比较解码之前的数据和解码之后的数据来计算错误比特数。 如果帧同步被确定但是解码不成功,则根据在第一时间水平方向成功解码的分组的数量来设置推定的错误比特数,并且如果帧同步未被确定,则预定的错误比特数是 组。 在每个BIC部分和分组部分中,基于每个测量范围的误差位数来计算误码率,并显示在监视器上。
    • 5. 发明授权
    • Power supply circuit
    • 电源电路
    • US07772813B2
    • 2010-08-10
    • US11639280
    • 2006-12-15
    • Tomokazu KojimaMinoru Honda
    • Tomokazu KojimaMinoru Honda
    • G05F1/00
    • H03F3/45475H03F1/56H03F2203/45674
    • An operational amplifier generates a power supply potential from a reference potential. An impedance adjuster adjusts an output impedance of the operational amplifier in accordance with a control signal. A charge accumulator accumulates an output charge of the operational amplifier whose impedance is adjusted by the impedance adjuster. A comparator compares an output voltage of the operational amplifier before the impedance adjustment by the impedance adjuster and the output voltage of the operational amplifier after the impedance adjustment by the impedance adjuster to each other, and the comparator further generates the control signal in accordance with a result of the comparison so as to output the generated control signal to the impedance adjuster.
    • 运算放大器从参考电位产生电源电位。 阻抗调节器根据控制信号调整运算放大器的输出阻抗。 电荷累加器累积运算放大器的输出电荷,其阻抗由阻抗调节器调节。 比较器在通过阻抗调节器进行的阻抗调整之后,将由阻抗调节器进行的阻抗调整之前的运算放大器的输出电压与运算放大器的输出电压进行比较,并且比较器进一步根据 比较结果,将所生成的控制信号输出到阻抗调节器。