公开(公告)号：US4968948A

公开(公告)日：1990-11-06

申请号：US379768

申请日：1989-07-14

申请人： Akio Tokumo ,  Masayuki Kato ,  Takeshi Sato ,  Tatsuzo Hasegawa

发明人： Akio Tokumo ,  Masayuki Kato ,  Takeshi Sato ,  Tatsuzo Hasegawa

IPC分类号： H03F3/217 ,  H03H7/09

CPC分类号： H03F3/217 ,  H03H7/09

摘要： A balanced transformer-less pulse width modulation amplifier circuit has two filter coils wound on the same core with the same polarity relative to the output. The arrangement reduces the possibility of magnetic saturation of the core and permits the cutoff frequency to be within the audio range.

摘要翻译： 平衡无变压器脉冲宽度调制放大器电路具有相对于输出端以相同极性缠绕在同一个芯上的两个滤波器线圈。 该布置降低了磁芯的磁饱和的可能性，并允许截止频率在音频范围内。

公开(公告)号：US4914707A

公开(公告)日：1990-04-03

申请号：US193136

申请日：1988-05-06

申请人： Shinjiro Kato ,  Toshikazu Yoshimi ,  Hideo Yamamoto ,  Takeshi Sato ,  Hisashi Kihara

发明人： Shinjiro Kato ,  Toshikazu Yoshimi ,  Hideo Yamamoto ,  Takeshi Sato ,  Hisashi Kihara

IPC分类号： H04R3/04 ,  H04R3/12 ,  H04R5/02 ,  H04R9/02 ,  H04R9/04

CPC分类号： H04R9/02 ,  H04R5/02 ,  H04R9/04 ,  H04R2499/13 ,  H04R9/025

摘要： A speaker system for a vehicle having both front and rear speakers. Both speakers are connected in parallel to an amplifier. The impedance of the rear speaker circuit is made greater than that of the front speaker circuit. A resistor may be placed in series with the rear speaker or a shorting ring may be attached to the coil of the front speaker to decrease the high frequency impedance.

摘要翻译： 一种用于车辆的扬声器系统，其具有前置扬声器和后置扬声器。 两个扬声器与放大器并联连接。 后置扬声器电路的阻抗大于前置扬声器电路的阻抗。 可以将电阻器与后置扬声器串联放置，或者可以将短路环连接到前置扬声器的线圈以降低高频阻抗。

公开(公告)号：US4677692A

公开(公告)日：1987-06-30

申请号：US749416

申请日：1985-06-27

申请人： Seiji Sakashita ,  Takeshi Sato ,  Hiroyuki Nagai ,  Kazuhiko Kubo ,  Akira Usui

发明人： Seiji Sakashita ,  Takeshi Sato ,  Hiroyuki Nagai ,  Kazuhiko Kubo ,  Akira Usui

IPC分类号： H03F1/02 ,  H03D7/00 ,  H03D7/12 ,  H03D7/14 ,  H04B1/18 ,  H04B1/26

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D2200/0023 ,  H03D2200/0043 ,  H03D2200/0047 ,  H03D2200/0084 ,  H03D7/125

摘要： A frequency conversion apparatus for converting a high frequency signal into an intermediate frequency signal includes a mixer section for mixing a high frequency signal with a local oscillator signal so as to obtain an intermediate frequency signal, and an amplifier connected to the mixer section via a high frequency stopping circuit for supplying a constant direct current to the mixer section as a constant current source. A current flowing in the mixer section when the local oscillator signal is applied is kept substantially equal to a direct current flowing in the mixer section when no local oscillator signal is applied thereto. The amplifier is used for amplifying either the high frequency signal or the intermediate frequency signal, or both signals at the same time.

摘要翻译： 一种用于将高频信号转换为中频信号的变频装置包括：混频器部分，用于将高频信号与本地振荡器信号混频以获得中频信号;以及放大器，通过高频连接到混频器部分 频率停止电路，用于向混频器部分提供恒定的直流电流作为恒定电流源。 当施加本机振荡器信号时，在混频器部分中流动的电流基本上等于在没有施加本地振荡器信号的情况下在混频器部分中流动的直流电流。 该放大器用于同时放大高频信号或中频信号，或两个信号。

公开(公告)号：US4550797A

公开(公告)日：1985-11-05

申请号：US571652

申请日：1984-01-17

申请人： Kiyoaki Suzuki ,  Hidetsugu Suzuki ,  Katsuhiro Onuki ,  Isami Nomoto ,  Yoshiaki Fukuda ,  Takeshi Sato

发明人： Kiyoaki Suzuki ,  Hidetsugu Suzuki ,  Katsuhiro Onuki ,  Isami Nomoto ,  Yoshiaki Fukuda ,  Takeshi Sato

IPC分类号： H04R7/02 ,  H04R7/12 ,  G10K13/00 ,  H04R7/00

CPC分类号： H04R7/127 ,  H04R7/02 ,  H04R2207/021 ,  H04R2307/023

摘要： A loudspeaker diaphragm comprising a molded, sintered ceramic body is described. The body is made of ceramic crystalline particles whose maximum size is below 1/5 time a thickness of the body which is in the form of a dome or cone. The dome- or cone-shaped diaphragm may have a flange along an opening side thereof in order to prevent deformation as may occur during firing.

摘要翻译： 描述了包括模制的烧结陶瓷体的扬声器隔膜。 身体由陶瓷结晶颗粒制成，其最大尺寸小于半圆形或锥形体形体的1/5倍。 圆顶或锥形隔膜可以具有沿其开口侧的凸缘，以防止在烧制期间可能发生的变形。

公开(公告)号：US4502077A

公开(公告)日：1985-02-26

申请号：US316423

申请日：1981-10-29

申请人： Noriaki Morotomi ,  Takeshi Sato

发明人： Noriaki Morotomi ,  Takeshi Sato

IPC分类号： H03H15/00 ,  H03H21/00 ,  H04B3/06 ,  H04N5/21 ,  H04B3/04

CPC分类号： H04N5/211

摘要： A ghost canceling apparatus for effectively canceling ghosts in television signals and having a high capability for canceling ghosts in the frequency band in which the ghost canceling is required. The apparatus utilizes an error detector and a tap gain control in a closed loop to control the gain of a transversal filter. In addition, a frequency transfer characteristic modifier is utilized to modify the loop frequency transfer characteristics so as to optimize the cancelation of ghosts.

摘要翻译： 一种重影消除装置，用于有效地消除电视信号中的重影，并且具有高的能力以消除需要重影消除的频带中的重影。 该装置利用闭环中的误差检测器和抽头增益控制来控制横向滤波器的增益。 另外，使用频率传递特性修改器来修改环路频率传输特性，以便优化重影的消除。

公开(公告)号：US4469790A

公开(公告)日：1984-09-04

申请号：US303517

申请日：1981-09-18

申请人： Isao Yamane ,  Takeshi Sato ,  Toshio Kudo ,  Yoshiki Minamoto ,  Takehiko Tachibana

发明人： Isao Yamane ,  Takeshi Sato ,  Toshio Kudo ,  Yoshiki Minamoto ,  Takehiko Tachibana

IPC分类号： C12N5/06 ,  A61K38/21 ,  C07K14/555 ,  C12P21/00 ,  C12N5/00 ,  C12N15/00 ,  C12R1/91

CPC分类号： C07K14/555 ,  Y10S435/811 ,  Y10S435/948

摘要： Process for preparing a continuous and spontaneous human-interferon-producing lymphoblastoid cell line which involves (a) transforming human lymphocytes isolated from a human infant from birth up to about 2 years or an aborted human fetus, the transforming being carried out with Epstein Barr Virus and (b) selecting from the resulting transformed cell lines a cell line producing more than 1000 units of interferon per milliliter when cultivated at a cell density of 10.sup.6 cells per milliliter in the absence of any interferon inducer.

摘要翻译： 用于制备连续和自发的人干扰素产生淋巴母细胞样细胞系的方法，其涉及（a）将从婴儿分离的人淋巴细胞从出生至约2年或流产的人胎儿转化，所述转化用爱泼斯坦巴尔病毒 和（b）在不存在任何干扰素诱导剂的情况下，以每毫升106个细胞的细胞浓度培养时，从所得转化细胞系中选择产生超过1000单位干扰素/毫升的细胞系。

公开(公告)号：US4438529A

公开(公告)日：1984-03-20

申请号：US337857

申请日：1982-01-07

申请人： Takeshi Sato

发明人： Takeshi Sato

IPC分类号： H04B1/18 ,  H03G1/00 ,  H03G3/10 ,  H03G3/30 ,  H04B1/26 ,  H04B1/16

CPC分类号： H03G3/3052 ,  H03G1/0029

摘要： A TV tuner circuit having a dual-gate MES FET in a UHF RF amplifier and a dual-gate MOS FET in a VHF RF amplifier which are both controlled by a single AGC voltage source. The source of the MES FET is always connected to a DC source voltage input through a resistor so as to ensure that no DC current flows from an AG voltage source to the second gate of the dual-gate MPES FET in receiving VHF signals. Accordingly, there is no drop in the AGC voltage applied to the second gate of the dual-gate MOS FET in the VHF RF amplifier, thereby enabling both the UHF RF amplifier and the VHF RF amplifier to have the same gain reduction characteristics.

摘要翻译： 具有在UHF RF放大器中的双栅极MES FET和VHF RF放大器中的双栅极MOS FET的TV调谐器电路都由单个AGC电压源控制。 MES FET的源极总是连接到通过电阻输入的直流电源电压，以确保在接收VHF信号时，直流电流不会从AG电压源流向双栅极MPES FET的第二栅极。 因此，在VHF RF放大器中，施加到双栅极MOS FET的第二栅极的AGC电压没有下降，从而使得UHF RF放大器和VHF RF放大器都能够具有相同的增益降低特性。

公开(公告)号：USD251553S

公开(公告)日：1979-04-10

申请号：US809166

申请日：1977-06-23

申请人： Takeshi Sato ,  Hiroshi Kojima

设计人： Takeshi Sato ,  Hiroshi Kojima

公开(公告)号：US4067288A

公开(公告)日：1978-01-10

申请号：US742324

申请日：1976-11-16

申请人： Shigeru Saito ,  Masahiko Suzuki ,  Takeshi Sato

发明人： Shigeru Saito ,  Masahiko Suzuki ,  Takeshi Sato

IPC分类号： G01L17/00 ,  B60C23/04

CPC分类号： B60C23/0403 ,  B60C23/0408

摘要： A method of detecting puncture of a pneumatic tire is disclosed. The method comprises guiding an internal pressure applied to the tire through a pressure outlet opening provided in that portion of a rim which is faced to a tube into an alarm means. The alarm means may be a whistle or a buzzer circuit which becomes operated when puncture occurs to produce alarm sound.

摘要翻译： 公开了一种检测充气轮胎穿刺的方法。 该方法包括通过设置在面向管的边缘部分中的压力出口将引导到轮胎的内部压力引导到报警装置中。 报警装置可以是在发生穿刺以产生报警声时变得操作的哨子或蜂鸣器电路。

公开(公告)号：US11201555B2

公开(公告)日：2021-12-14

申请号：US16794428

申请日：2020-02-19

申请人： Minoru Kado ,  Takumi Hyugaji ,  Takeshi Sato

发明人： Minoru Kado ,  Takumi Hyugaji ,  Takeshi Sato

IPC分类号： H02M3/335

摘要： Disclosed is a switching power supply device including: a transformer for voltage conversion; a main switching element connected in series to a primary coil; a primary side control circuit that performs on/off control of the main switching element; a synchronous rectification MOS transistor connected in series to a secondary coil; and a secondary side control circuit that performs on/off control of the MOS transistor, wherein the secondary side control circuit includes: an off-timing detection circuit that compares a drain voltage of the MOS transistor with a predetermined threshold voltage, and detects a timing to turn off the MOS transistor; and a threshold voltage setting circuit that sets the threshold voltage, and the threshold voltage setting circuit sets the threshold voltage based on a conduction period of the secondary coil or a period obtained by adding the conduction period to a conduction period of the primary coil.