专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06400211B1 DC/DC converter 有权
标题翻译： DC / DC转换器
公开(公告)号：US06400211B1
公开(公告)日：2002-06-04
申请号：US09954036
申请日：2001-09-18
申请人： Ichiro Yokomizo , Sachito Horiuchi , Mayuka Matsumae
发明人： Ichiro Yokomizo , Sachito Horiuchi , Mayuka Matsumae
IPC分类号： G05F110
CPC分类号： H02M3/07 , H02M2003/072
摘要： A DC/DC converter is provided with a DC power source; a reference voltage generating circuit; an amplifier which receives an electric power from the DC power source and outputs an electric power of which voltage is controlled so as to assume a target voltage value by stepping down the voltage of the electric power from the DC power source depending on a difference between the reference voltage and a detection voltage; an oscillation circuit which generates signals having a specific frequency; a voltage boosting circuit which receives the output of the amplifier and the output of the oscillation circuit, causes switching of the output of the amplifier at the specific frequency to charge a first capacitor, and performs voltage boosting by transferring the electric charges-charged in the first capacitor through complementary ON/OFF switching with respect to the former switching into a second capacitor after raising substantially upto n/m time voltage (wherein n>m and n and m are integers equal to or more than 2) and charging the same therewith; and an output voltage detection circuit which generates the detection voltage depending on the output voltage of the boosting circuit, whereby a voltage of substantially n/m times of the target voltage value is generated from the voltage boosting circuit.
摘要翻译： DC / DC转换器配备有直流电源; 参考电压发生电路; 放大器，其从直流电源接收电力，并且通过根据所述直流电源的差异来降低来自所述直流电源的电力的电压来输出控制所述电压的电力，以便呈现目标电压值参考电压和检测电压; 产生具有特定频率的信号的振荡电路; 接收放大器的输出和振荡电路的输出的升压电路使放大器的输出以特定频率切换，对第一电容器充电，并且通过在第第一电容器通过互补的ON / OFF切换相对于前者在升高到大约n / m时间电压之后切换成第二电容器（其中n> m且n和m是等于或大于2的整数）并且与其充电 ; 以及输出电压检测电路，其根据升压电路的输出电压产生检测电压，由此从升压电路产生大致n / m倍的目标电压值的电压。

2. 发明授权

US5754668A Equalizer and audio device using the same 失效
标题翻译：均衡器和音频设备使用相同
公开(公告)号：US5754668A
公开(公告)日：1998-05-19
申请号：US554492
申请日：1995-11-07
申请人： Hiroyuki Funahashi , Ichiro Yokomizo
发明人： Hiroyuki Funahashi , Ichiro Yokomizo
IPC分类号： H03G5/00 , H03G5/10
CPC分类号： H03G5/10
摘要： An equalizer includes first and second differential amplifiers which have a common output and respective separate current sources, a first negative feed back circuit which feeds back a voltage signal extracted from the common output to the first differential amplifier, a second negative feed back circuit which feeds back the voltage signal to the second differential amplifier, and a filter circuit which is provided at either the first or the second negative feed back circuit and which differentiates frequency characteristics during signal amplification in the first and second differential amplifiers. A frequency characteristic is selected through selection of one of the current values of the respective current sources in response to a sound quality adjusting signal.
摘要翻译：均衡器包括具有公共输出和相应的单独电流源的第一和第二差分放大器，将从公共输出提取的电压信号反馈到第一差分放大器的第一负反馈电路，第二负反馈电路，其馈送将电压信号反馈到第二差分放大器，以及滤波电路，其设置在第一或第二负反馈电路处，并且在第一和第二差分放大器中的信号放大期间区分频率特性。通过响应于声音质量调整信号选择各个电流源的当前值之一来选择频率特性。

3. 发明授权

US4146606A Pharmaceutical compositions for dental use 失效
标题翻译：用于牙科用途的药物组合物
公开(公告)号：US4146606A
公开(公告)日：1979-03-27
申请号：US909871
申请日：1978-05-26
申请人： Reiichi Yamaga , Ichiro Yokomizo , Setsuo Higashi
发明人： Reiichi Yamaga , Ichiro Yokomizo , Setsuo Higashi
IPC分类号： A61K6/00 , A61K6/02 , A61K33/16 , A61K33/24 , A61K33/30 , A61K36/00 , A61K36/28 , A61P1/02 , A61K7/16 , A61K7/18 , A61K7/26
CPC分类号： A61K6/0067 , A61K6/0094 , A61K6/0835
摘要： A pharmaceutical composition for dental use which comprises a strontium compound, a zinc compound, tannin and, optionally, a fluorine compound in such a weight proportion that strontium, zinc, tannin and fluorine is 1 to 3:2 to 4:1 to 3:0 to 4.

4. 发明申请

US20050035890A1 Method and circuit for producing trimmed voltage using D/A converter circuit 有权
标题翻译：使用D / A转换电路产生微调电压的方法和电路
公开(公告)号：US20050035890A1
公开(公告)日：2005-02-17
申请号：US10896341
申请日：2004-07-21
申请人： Yoshiyuki Karasawa , Ichiro Yokomizo , Noboru Kagemoto
发明人： Yoshiyuki Karasawa , Ichiro Yokomizo , Noboru Kagemoto
IPC分类号： H01L27/04 , G05F1/10 , G05F3/02 , H01C17/242 , H01L21/822 , H03M1/10 , H03M1/66 , H03M1/78
CPC分类号： H03M1/108 , H03M1/785
摘要： Trimming by disconnecting a fuse connected in parallel to a feedback resistor of an amplifier circuit would cause a variation in voltage value due to a remaining resistance component. A voltage generator circuit is provided therein with a D/A converter circuit of an R-2R ladder resistor network type circuit. The D/A converter circuit is provided with a first switch circuit to an eighth switch circuit, corresponding to each bit, which are switched to set a digital value. Each switch circuit, which is provided with a fuse for providing a fixed voltage value, allows the fuse to be disconnected to fix the voltage value to a value obtained by inverting the initial value. The setting circuit controls the switching operation of each switch circuit, thereby simulating an electrical state of a fuse being disconnected before the fuse is actually disconnected.
摘要翻译：通过断开与并联的保险丝与放大器电路的反馈电阻的切断将导致由于剩余电阻分量导致的电压值的变化。电压发生器电路中设置有R-2R梯形电阻网络型电路的D / A转换器电路。 D / A转换器电路具有对应于每个位的第八开关电路的第一开关电路，其被切换以设置数字值。设置有用于提供固定电压值的熔丝的每个开关电路允许断开熔丝以将电压值固定为通过反转初始值而获得的值。设置电路控制每个开关电路的开关操作，从而模拟保险丝实际断开之前断开的保险丝的电气状态。

5. 发明授权

US6088460A Equalizer and audio device using the same 失效
标题翻译：均衡器和音频设备使用相同
公开(公告)号：US6088460A
公开(公告)日：2000-07-11
申请号：US30277
申请日：1998-02-25
申请人： Hiroyuki Funahashi , Ichiro Yokomizo
发明人： Hiroyuki Funahashi , Ichiro Yokomizo
IPC分类号： H03G5/00 , H03G5/10
CPC分类号： H03G5/10
摘要： An equalizer includes first and second differential amplifiers which have a common output and respective separate current sources, a first negative feed back circuit which feeds back a voltage signal extracted from the common output to the first differential amplifier, a second negative feed back circuit which feeds back the voltage signal to the second differential amplifier, and a filter circuit which is provided at either the first or the second negative feed back circuit and which differentiates frequency characteristics during signal amplification in the first and second differential amplifiers. Frequency characterstic is selected through selection of one of the current values of the respective current sources in response to a sound quality adjusting signal.
摘要翻译：均衡器包括具有公共输出和相应的单独电流源的第一和第二差分放大器，将从公共输出提取的电压信号反馈到第一差分放大器的第一负反馈电路，第二负反馈电路，其馈送将电压信号反馈到第二差分放大器，以及滤波电路，其设置在第一或第二负反馈电路处，并且在第一和第二差分放大器中的信号放大期间区分频率特性。通过响应于音质调整信号选择各个电流源的当前值之一来选择频率特性。

6. 发明授权

US07737733B2 Current-voltage conversion circuit 失效
标题翻译：电流 - 电压转换电路
公开(公告)号：US07737733B2
公开(公告)日：2010-06-15
申请号：US11995644
申请日：2006-07-11
申请人： Ichiro Yokomizo , Yutaka Shibata
发明人： Ichiro Yokomizo , Yutaka Shibata
IPC分类号： H02M11/00
CPC分类号： H03F3/45968
摘要： A current-voltage conversion circuit which converts a current to be detected into a voltage, includes a detection resistor, amplifier circuit having a first operational amplifier, and an offset adjusting current source having a third resistor and a fourth resistor which are capable of trimming. The offset adjusting current source causes an offset adjustment current to flow in the offset resistor. The current value of the offset adjustment current is controlled by adjusting the resistance of the third resistor and the fourth resistor. A voltage at a node between the first transistor and the second resistor is output.
摘要翻译：将要检测的电流转换为电压的电流 - 电压转换电路包括检测电阻器，具有第一运算放大器的放大器电路和具有能够修整的第三电阻器和第四电阻器的偏移调整电流源。偏移调整电流源会导致偏移电流流过偏移调整电流。通过调整第三电阻器和第四电阻器的电阻来控制偏移调整电流的当前值。输出第一晶体管和第二电阻之间的节点处的电压。

7. 发明申请

US20090259418A1 CURRENT-VOLTAGE CONVERSION CIRCUIT AND POWER CONSUMPTION DETECTION CIRCUIT AND ELECTRONIC DEVICE USING THE SAME 失效
标题翻译：电流转换电路和消耗电力检测电路及使用该电路的电子设备
公开(公告)号：US20090259418A1
公开(公告)日：2009-10-15
申请号：US11995644
申请日：2006-07-11
申请人： Ichiro Yokomizo , Yutaka Shibata
发明人： Ichiro Yokomizo , Yutaka Shibata
IPC分类号： G01R21/00 , H02M11/00 , G06F19/00
CPC分类号： H03F3/45968
摘要： A current-voltage conversion circuit which converts a current to be detected into a voltage, includes a detection resistor, amplifier circuit having a first operational amplifier, and an offset adjusting current source having a third resistor and a fourth resistor which are capable of trimming. The offset adjusting current source causes an offset adjustment current to flow in the offset resistor. The current value of the offset adjustment current is controlled by adjusting the resistance of the third resistor and the fourth resistor. A voltage at a node between the first transistor and the second resistor is output.
摘要翻译：将要检测的电流转换为电压的电流 - 电压转换电路包括检测电阻器，具有第一运算放大器的放大器电路和具有能够修整的第三电阻器和第四电阻器的偏移调整电流源。偏移调整电流源会导致偏移电流流过偏移调整电流。通过调整第三电阻器和第四电阻器的电阻来控制偏移调整电流的当前值。输出第一晶体管和第二电阻之间的节点处的电压。

8. 发明申请

US20050116687A1 Charging device and portable electronic equipment comprising same 审中-公开
标题翻译：充电装置和包括它的便携式电子设备
公开(公告)号：US20050116687A1
公开(公告)日：2005-06-02
申请号：US10995395
申请日：2004-11-24
申请人： Ichiro Yokomizo , Yoshiyuki Karasawa
发明人： Ichiro Yokomizo , Yoshiyuki Karasawa
IPC分类号： H02J7/02 , H01M10/44 , H02J7/00
CPC分类号： H02J7/0068 , H02J7/0047
摘要： The present invention provides a charging device that makes it possible to prevent a current control element supplying current from an AC adapter from being turned OFF and to prevent the light emission of a light-emitting element indicating that charging is in progress from being terminated even when there is a reflux current from the secondary cell. The charging circuit constituting the charging device comprises a current control element that supplies current from the output of the AC adapter to the load and secondary cell; a current detection resistor that detects the charging current from the current control element to the secondary cell; a termination current detection circuit that detects a termination current for the completion of charging from the current flowing to the current detection resistor; a charging-current direction detection circuit that detects the direction of the current flowing to the current detection resistor; a charging current control circuit that controls the current control element, a light-emitting element control circuit that controls the light-emitting element, and a light-emitting element driving element that drives the light-emitting element.
摘要翻译：本发明提供一种充电装置，其能够防止从AC适配器供电的电流控制元件被断开，并且即使当停止充电时也防止表示正在进行充电的发光元件的发光存在来自二次电池的回流电流。构成充电装置的充电电路包括电流控制元件，其将电流从AC适配器的输出提供给负载和二次电池; 电流检测电阻，其检测从电流控制元件到二次电池的充电电流; 终止电流检测电路，从流过电流检测电阻的电流检测完成充电的终止电流; 充电电流方向检测电路，检测流向电流检测电阻的电流的方向; 控制电流控制元件的充电电流控制电路，控制发光元件的发光元件控制电路和驱动发光元件的发光元件驱动元件。

9. 发明授权

US08044639B2 Selector circuit 有权
标题翻译：选择电路
公开(公告)号：US08044639B2
公开(公告)日：2011-10-25
申请号：US12256797
申请日：2008-10-23
申请人： Yoichi Tamegai , Ichiro Yokomizo , Hironori Nakahara
发明人： Yoichi Tamegai , Ichiro Yokomizo , Hironori Nakahara
IPC分类号： H02J7/00
CPC分类号： H02J7/0055 , Y10T307/50
摘要： A selector circuit outputs one of a first input voltage or a second input voltage via an output terminal. A first transistor and a second transistor are provided in series between a first input terminal and the output terminal. A third transistor and a fourth transistor are provided in series between a second input terminal and the output terminal. A control unit controls the ON/OFF operations of the first transistor through the fourth transistor. The back gates of the first transistor and the second transistor are connected such that at least one body diode of the first transistor M1 and at least one body diode of the second transistor are arranged in opposing directions. The back gates of the third transistor and the fourth transistor are connected in the same way.
摘要翻译：选择器电路通过输出端子输出第一输入电压或第二输入电压中的一个。在第一输入端子和输出端子之间串联地提供第一晶体管和第二晶体管。在第二输入端子和输出端子之间串联地提供第三晶体管和第四晶体管。控制单元通过第四晶体管来控制第一晶体管的ON / OFF操作。第一晶体管和第二晶体管的背栅极被连接成使得第一晶体管M1的至少一个体二极管和第二晶体管的至少一个体二极管以相反的方向布置。第三晶体管和第四晶体管的背栅极以相同的方式连接。

10. 发明申请

US20090224819A1 CONSTANT CURRENT CIRCUIT, AND INVERTER AND OSCILLATION CIRCUIT USING SUCH CONSTANT CURRENT CIRCUIT 审中-公开
标题翻译：恒定电流电路，以及使用这种恒流电路的逆变器和振荡电路
公开(公告)号：US20090224819A1
公开(公告)日：2009-09-10
申请号：US12063594
申请日：2006-08-08
申请人： Yutaka Shibata , Yoshiyuki Karasawa , Ichiro Yokomizo
发明人： Yutaka Shibata , Yoshiyuki Karasawa , Ichiro Yokomizo
IPC分类号： H01L35/00 , G05F1/10 , G05F3/26
CPC分类号： G05F3/30
摘要： A bias current source generates a constant current Iref by applying to a current-generating resistor a voltage proportional to a thermal voltage Vt. A first bipolar transistor and a second bipolar transistor are disposed in series on the path of the constant current which is generated by the bias current source. A third bipolar transistor forms a current mirror circuit with the second bipolar transistor. A fourth bipolar transistor has a base connected to the base of the first bipolar transistor and has an emitter connected to a temperature-compensating resistor. The constant current circuit outputs a sum of the collector currents of the third bipolar transistor and the fourth bipolar transistor.
摘要翻译：偏置电流源通过向电流产生电阻器施加与热电压Vt成比例的电压来产生恒定电流Iref。第一双极晶体管和第二双极晶体管串联设置在由恒定电流产生的恒定电流的路径上偏置电流源。第三双极晶体管与第二双极晶体管形成电流镜电路。第四双极晶体管具有连接到第一双极晶体管的基极的基极，并且具有连接到温度补偿电阻器的发射极。恒流电路输出第三双极晶体管和第四双极晶体管的集电极电流之和。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式