公开(公告)号：US6037823A

公开(公告)日：2000-03-14

申请号：US46221

申请日：1998-03-23

申请人： Masashi Arai ,  Masaaki Nara ,  Hiroki Seyama

发明人： Masashi Arai ,  Masaaki Nara ,  Hiroki Seyama

IPC分类号： H03F3/34 ,  H03F3/08 ,  H03L5/00

CPC分类号： H03F3/087

摘要： A current to voltage conversion circuit is formed of a differential amplifier circuit (1) with a negative input terminal connected to a light receiving element (3) and a register (4) which feeds back an output signal to the negative input terminal of the differential amplifier circuit (1) thereof. The variable gain amplifier circuit (5) amplifies the output voltage of the current to voltage conversion circuit to detect the bottom value of the output signal thereof. The comparator circuit (7) compares the bottom value with the reference value Vr1 so that current flowing through the resistor (4) can be adjusted according to the difference between the bottom value and the reference value Vr1. The offset of the output signal from the variable gain amplifier circuit (5) supplied through the output terminal OUT is thereby adjusted. Since the peak value of the output signal of the variable gain amplifier circuit (5) is detected and the gain of the variable gain amplifier circuit (5) is controlled according to the difference between the peak value and the reference value Vr2, an output signal of a predetermined level can be obtained.

摘要翻译： 电流 - 电压转换电路由差分放大器电路（1）形成，其中负输入端连接到光接收元件（3），寄存器（4）将输出信号反馈到差分放大器的负输入端 放大器电路（1）。 可变增益放大器电路（5）放大电流对电压转换电路的输出电压，以检测其输出信号的底部值。 比较器电路（7）将底部值与参考值Vr1进行比较，使得流过电阻器（4）的电流可以根据底部值和参考值Vr1之间的差值进行调整。 由此调整通过输出端子OUT提供的来自可变增益放大器电路（5）的输出信号的偏移。 由于可变增益放大器电路（5）的输出信号的峰值被检测，并且可变增益放大器电路（5）的增益根据峰值和参考值Vr2之间的差被控制，所以输出信号 可以获得预定水平。

公开(公告)号：US5610887A

公开(公告)日：1997-03-11

申请号：US342529

申请日：1994-11-21

申请人： Masashi Arai ,  Akira Tsukihashi

发明人： Masashi Arai ,  Akira Tsukihashi

IPC分类号： G11B7/095 ,  G11B7/09

CPC分类号： G11B7/0903 ,  G11B7/094 ,  G11B7/0945

摘要： An error signal generating circuit for adjusting a position of a sub-beam on an optical disc to a correct one. A timing circuit generates a test signal so that a driver drives a tracking coil. As a result, a difference signal is generated in a difference signal generating circuit and is then compared to a reference value in a comparing circuit. A controlling signal is generated in a controlling circuit in reply to a comparing error so as to be held in a holding circuit. The thus held controlling signal is converted into an analog signal in a D/A converter and is then applied to a VCA to vary the amplifying rate, such that the difference signal becomes zero when a correct tracking operation is being carried out.

摘要翻译： 一种用于将光盘上的子光束的位置调整为正确的误差信号发生电路。 定时电路产生测试信号，使得驱动器驱动跟踪线圈。 结果，在差信号发生电路中产生差分信号，然后在比较电路中与参考值进行比较。 响应于比较误差在控制电路中产生控制信号，以便保持在保持电路中。 这样保持的控制信号在D / A转换器中被转换为模拟信号，然后被施加到VCA以改变放大率，使得当正在进行正确的跟踪操作时差信号变为零。

公开(公告)号：US5553775A

公开(公告)日：1996-09-10

申请号：US346170

申请日：1994-11-22

申请人： Keno Kato ,  Ikutaro Noji ,  Masashi Arai ,  Makoto Fukubayashi

发明人： Keno Kato ,  Ikutaro Noji ,  Masashi Arai ,  Makoto Fukubayashi

IPC分类号： B60H1/00 ,  B61D27/00 ,  F24F7/00

CPC分类号： B60H1/0075 ,  B60H1/00842 ,  F24F11/0034

摘要： An air conditioner system for a vehicle having an occupant compartment which includes a driver's occupying area and a front passenger's occupying area. The system includes a vent duct adapted to conduct a conditioned air. The vent duct defines a first passages opening to the driver's occupying area and a second passage opening to the front passenger's occupying area. First and second vent valves are disposed within the first and second passages, respectively. First and second actuators are drivingly connected to the first and second vent valves. A first sensor is so constructed and arranged as to detect insolation magnitude within the driver's occupying area and generate a first sensor signal indicative of the detected insolation magnitude within the driver's occupying area. A second sensor is so constructed and arranged as to detect insolation magnitude within the front passenger's occupying area and generate a second sensor signal indicative of said detected insolation magnitude within the front passenger's occupying area. A control unit is provided to determine target degrees of opening which the first and second vent valves are to take in response to the first and second sensor signals and providing first and second outputs to the first and second actuators, respectively, to set the first and second vent valves at the determined target degrees of opening.

摘要翻译： 一种用于车辆的空调系统，其具有包括驾驶员占用区域和前排乘客占用区域的乘员室。 该系统包括适于进行调节空气的排气管。 通风管道限定通向驾驶员的占据区域的第一通道和向前排乘客占据区域的第二通道。 第一和第二排气阀分别设置在第一通道和第二通道内。 第一和第二致动器驱动地连接到第一和第二排气阀。 第一传感器被构造和布置成检测驾驶员占据区域内的日照幅度，并产生指示驾驶员占据区域内检测到的日晒量值的第一传感器信号。 第二传感器被构造和布置成检测前排乘客的占据区域内的日晒量值，并产生指示前乘客占据区域内的所述检测到的日晒量值的第二传感器信号。 提供控制单元以确定第一和第二排气阀响应于第一和第二传感器信号将要采取的目标开度，并分别向第一和第二致动器提供第一和第二输出，以设定第一和第二传感器信号的第一和第二传感器信号， 第二排气阀处于确定的目标开度。

公开(公告)号：US4757539A

公开(公告)日：1988-07-12

申请号：US940004

申请日：1986-12-10

申请人： Kanji Tanaka ,  Masashi Arai

发明人： Kanji Tanaka ,  Masashi Arai

IPC分类号： H04H1/00 ,  H04H20/49 ,  H04H5/00

CPC分类号： H04H20/49

摘要： In an AM stereo receiving apparatus for decoding an AM stereo broadcasting signal of an ISB system, an envelope detecting circuit 6 detects an output of an intermediate frequency amplifying circuit 5 and a DC removing circuit 7 removes a DC component therefrom, so that a stereo sum signal (L+R) is obtained. A quadrature detecting circuit 9 detects quadrature of the output of the intermediate frequency amplifying circuit 5. A multiplying circuit 10 multiplies the stereo sum signal (L+R), which is amplified a times as much by a first amplifying circuit 8, and the output of the quadrature detecting circuit 9. An addition circuit 12 adds the output of the quadrature detecting circuit 9, which is amplified b times as much by a second amplifying circuit 11, and the output of the multiplying circuit 10. The output of the addition circuit 12 becomes a stereo difference signal (L-R) by appropriately setting the amplification factor a of the first amplifying circuit 8 and the amplification factor b of the second amplifying circuit 11.

摘要翻译： 在用于解码ISB系统的AM立体声广播信号的AM立体声接收装置中，包络检测电路6检测中频放大电路5的输出，并且DC去除电路7从其中去除DC分量，从而立体声总和 信号（L + R）。 正交检测电路9检测中频放大电路5的输出的正交。乘法电路10将由第一放大电路8放大倍数的立体声和信号（L + R）与输出 正交检测电路9的加法电路12相加，正交检波电路9的输出由第二放大电路11倍频放大倍数和乘法电路10的输出。加法电路的输出 12通过适当地设定第一放大电路8的放大系数a和第二放大电路11的放大系数b，成为立体声差信号（LR）。

公开(公告)号：US4707856A

公开(公告)日：1987-11-17

申请号：US828855

申请日：1986-02-12

申请人： Kanji Tanaka ,  Masashi Arai

发明人： Kanji Tanaka ,  Masashi Arai

IPC分类号： H04H1/00 ,  H04H20/49 ,  H04H5/00

CPC分类号： H04H20/49

摘要： An AM stereo receiver applicable to receive AM signals containing ID signals which represent different AM stereo systems. The AM stereo receiver includes an IF circuit for generating an IF signal based on a received signal, a PLL circuit for locking the frequency of the IF signal, a clock circuit for generating a clock signal based on a signal obtained from the PLL circuit, and ID signal detector for detecting any one of the ID signals and for producing a detected ID signal. A circuit for distinguishing which one of the different AM stereo systems does the detected ID signal represent includes a pulse generator for generating a first pulse signal having a pulse width as a function of the frequency of the detected ID signal, a counter for counting the number of the clock pulses occurring during said first pulse signal, and distinguish circuit for distinguishing each detected ID signal from different ID signals based on the counted result of the counter.

摘要翻译： AM立体声接收机适用于接收包含代表不同AM立体声系统的ID信号的AM信号。 AM立体声接收机包括用于基于接收信号产生IF信号的IF电路，用于锁定IF信号的频率的PLL电路，用于基于从PLL电路获得的信号产生时钟信号的时钟电路，以及 ID信号检测器，用于检测ID信号中的任何一个并产生检测到的ID信号。 用于区分检测到的ID信号所表示的不同AM立体声系统中的哪一个的电路包括：脉冲发生器，用于产生具有作为检测到的ID信号的频率的函数的脉冲宽度的第一脉冲信号;计数器 在所述第一脉冲信号期间发生的时钟脉冲，以及基于计数器的计数结果来区分用于区别每个检测到的ID信号与不同ID信号的电路。