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1. 发明授权

US07643261B2 Semiconductor device 有权
标题翻译：半导体器件
公开(公告)号：US07643261B2
公开(公告)日：2010-01-05
申请号：US11616494
申请日：2006-12-27
申请人： Hiroshi Ide , Satoshi Fujita , Takehiko Umeyama
发明人： Hiroshi Ide , Satoshi Fujita , Takehiko Umeyama
IPC分类号： H02H9/00
CPC分类号： H01L27/0285
摘要： There is provided a semiconductor device capable of supplying an analog input signal higher than or equal to an operating power supply voltage. An electrostatic discharge protection circuit corresponding to the analog input signal is provided for an external terminal that is supplied with an analog input signal generated with a first power supply voltage. A voltage divider resistor divides the analog input signal passing through the electrostatic discharge protection circuit into a voltage corresponding to a second power supply voltage lower that the first power supply voltage. An input circuit operating on the second power supply voltage receives the analog input signal divided by the voltage divider resistor to form an internal analog signal. There are provided first and second unidirectional elements. The first unidirectional element passes current from the input circuit's input terminal to the second power supply voltage. The second unidirectional element passes current from a circuit ground potential to a first circuit's input terminal.
摘要翻译：提供了能够提供高于或等于工作电源电压的模拟输入信号的半导体器件。为被提供有以第一电源电压产生的模拟输入信号的外部端子提供对应于模拟输入信号的静电放电保护电路。分压电阻器将通过静电放电保护电路的模拟输入信号分压成与第一电源电压相对应的第二电源电压的电压。在第二电源电压上工作的输入电路接收由分压电阻分压的模拟输入信号，以形成内部模拟信号。提供了第一和第二单向元件。第一单向元件将电流从输入电路的输入端子传递到第二电源电压。第二单向元件将电流从电路接地电位传递到第一电路的输入端。

2. 发明申请

US20070177328A1 SEMICONDUCTOR DEVICE 有权
标题翻译：半导体器件
公开(公告)号：US20070177328A1
公开(公告)日：2007-08-02
申请号：US11616494
申请日：2006-12-27
申请人： Hiroshi IDE , Satoshi Fujita , Takehiko Umeyama
发明人： Hiroshi IDE , Satoshi Fujita , Takehiko Umeyama
IPC分类号： H05F3/02 , H05F3/00
CPC分类号： H01L27/0285
摘要： There is provided a semiconductor device capable of supplying an analog input signal higher than or equal to an operating power supply voltage. An electrostatic discharge protection circuit corresponding to the analog input signal is provided for an external terminal that is supplied with an analog input signal generated with a first power supply voltage. A voltage divider resistor divides the analog input signal passing through the electrostatic discharge protection circuit into a voltage corresponding to a second power supply voltage lower that the first power supply voltage. An input circuit operating on the second power supply voltage receives the analog input signal divided by the voltage divider resistor to form an internal analog signal. There are provided first and second unidirectional elements. The first unidirectional element passes current from the input circuit's input terminal to the second power supply voltage. The second unidirectional element passes current from a circuit ground potential to a first circuit's input terminal.
摘要翻译：提供了能够提供高于或等于工作电源电压的模拟输入信号的半导体器件。为被提供有以第一电源电压产生的模拟输入信号的外部端子提供对应于模拟输入信号的静电放电保护电路。分压电阻器将通过静电放电保护电路的模拟输入信号分压成与第一电源电压相对应的第二电源电压的电压。在第二电源电压上工作的输入电路接收由分压电阻分压的模拟输入信号，以形成内部模拟信号。提供了第一和第二单向元件。第一单向元件将电流从输入电路的输入端子传递到第二电源电压。第二单向元件将电流从电路接地电位传递到第一电路的输入端。

3. 发明申请

US20120081021A1 DRIVING CIRCUIT FOR AND SEMICONDUCTOR DEVICE FOR DRIVING LASER DIODE 有权
标题翻译：用于驱动激光二极管的驱动电路和半导体器件
公开(公告)号：US20120081021A1
公开(公告)日：2012-04-05
申请号：US13324726
申请日：2011-12-13
申请人： Tsuyoshi Horiuchi , Takehiko Umeyama
发明人： Tsuyoshi Horiuchi , Takehiko Umeyama
IPC分类号： H05B37/02
CPC分类号： H01S5/042 , H01S5/0427
摘要： A driving circuit supplies a suppression current (I4) which reduces a decrease in a driving current (Idrive) immediately after occurrence of an overshoot at the time of the rise of the driving current (Idrive) to a laser diode (1). The driving circuit draws a suppression current (I5) which reduces an increase in the driving current (Idrive) immediately after occurrence of an undershoot at the time of the fall of the driving current (Idrive) from the driving current (Idrive).
摘要翻译：驱动电路提供抑制电流（I4），该抑制电流（I4）在驱动电流（Idrive）上升到激光二极管（1）之后，立即将出现过冲之后的驱动电流（Idrive）减小。驱动电路吸收抑制电流（I5），其在驱动电流（Idrive）从驱动电流（Idrive）下降时发生下冲之后立即减小驱动电流（Idrive）的增加。

4. 发明授权

US08098023B2 Driving circuit for and semiconductor device for driving laser diode 有权
标题翻译：用于驱动激光二极管的驱动电路和半导体器件
公开(公告)号：US08098023B2
公开(公告)日：2012-01-17
申请号：US12846955
申请日：2010-07-30
申请人： Tsuyoshi Horiuchi , Takehiko Umeyama
发明人： Tsuyoshi Horiuchi , Takehiko Umeyama
IPC分类号： H05B37/02
CPC分类号： H01S5/042 , H01S5/0427
摘要： A driving circuit supplies a suppression current (I4) which reduces a decrease in a driving current (Idrive) immediately after occurrence of an overshoot at the time of the rise of the driving current (Idrive) to a laser diode (1). The driving circuit draws a suppression current (I5) which reduces an increase in the driving current (Idrive) immediately after occurrence of an undershoot at the time of the fall of the driving current (Idrive) from the driving current (Idrive).
摘要翻译：驱动电路提供抑制电流（I4），该抑制电流（I4）在驱动电流（Idrive）上升到激光二极管（1）之后，立即将出现过冲之后的驱动电流（Idrive）减小。驱动电路吸收抑制电流（I5），其在驱动电流（Idrive）从驱动电流（Idrive）下降时发生下冲之后立即减小驱动电流（Idrive）的增加。

5. 发明授权

US06731449B2 Magnetic recording writing circuit 失效
标题翻译：磁记录电路
公开(公告)号：US06731449B2
公开(公告)日：2004-05-04
申请号：US09878331
申请日：2001-06-12
申请人： Yasuhiro Okazaki , Takehiko Umeyama , Tsuyoshi Horiuchi , Hiroshi Murakami
发明人： Yasuhiro Okazaki , Takehiko Umeyama , Tsuyoshi Horiuchi , Hiroshi Murakami
IPC分类号： G11B502
CPC分类号： G11B5/022 , G11B5/012 , G11B5/02 , G11B2005/0013
摘要： In a magnetic recording writing circuit, a current having a higher level than a write current is supplied for a period of time during rise and fall of the write current, and a current having a lower level than the write current is supplied for a period of time during overshoot at the rise and fall of the write current. Accordingly, the write current can recover quickly from overshoot.
摘要翻译：在磁记录写入电路中，在写入电流的上升和下降期间提供具有比写入电流更高电平的电流一段时间，并且提供具有比写入电流低的电流，持续一段时间在写入电流的上升和下降时的过冲时间。因此，写入电流可以从过冲快速恢复。

6. 发明授权

US06683487B2 Current driver circuit for supplying write current to a write head while changing a flow direction of the write current 失效
标题翻译：用于在改变写入电流的流动方向的同时向写入头提供写入电流的当前驱动器电路
公开(公告)号：US06683487B2
公开(公告)日：2004-01-27
申请号：US10212702
申请日：2002-08-07
申请人： Toru Takeuchi , Takehiko Umeyama
发明人： Toru Takeuchi , Takehiko Umeyama
IPC分类号： H03K1756
CPC分类号： G11B5/022 , G11B5/09 , H03K17/04163 , H03K17/6872
摘要： An H-type bridge circuit includes four transistors, two resistors, and a write head. A write current supplied from a current supply circuit including a first of the transistors and resistors flows through the write head and is received in a current receiving circuit including a second of the resistors and a fourth of the transistors, and another write current supplied from a current supply circuit including the second of the transistors and the second resistor flows through the write head and is received in a current receiving circuit including the first of the resistors and the third of the transistors. Impedance of the write head matches an output impedance of the current supply circuit and matches an input impedance of the current receiving circuit.
摘要翻译： H型桥式电路包括四个晶体管，两个电阻和一个写入头。从包括第一晶体管和电阻器的电流源电路提供的写入电流流过写入头，并被接收在包括电阻器中的第二个和晶体管中的第四个的电流接收电路中，并且从一个包括第二晶体管和第二电阻器的电流供给电路流过写入头并被接收在包括第一电阻器和第三晶体管的电流接收电路中。写头的阻抗匹配电流供应电路的输出阻抗并匹配电流接收电路的输入阻抗。

7. 发明授权

US07791288B2 Driving circuit for and semiconductor device for driving laser diode 有权
标题翻译：用于驱动激光二极管的驱动电路和半导体器件
公开(公告)号：US07791288B2
公开(公告)日：2010-09-07
申请号：US12068535
申请日：2008-02-07
申请人： Tsuyoshi Horiuchi , Takehiko Umeyama
发明人： Tsuyoshi Horiuchi , Takehiko Umeyama
IPC分类号： H05B37/02
CPC分类号： H01S5/042 , H01S5/0427
摘要： A driving circuit supplies a suppression current (I4) which reduces a decrease in a driving current (Idrive) immediately after occurrence of an overshoot at the time of the rise of the driving current (Idrive) to a laser diode (1). The driving circuit draws a suppression current (I5) which reduces an increase in the driving current (Idrive) immediately after occurrence of an undershoot at the time of the fall of the driving current (Idrive) from the driving current (Idrive).
摘要翻译：驱动电路提供抑制电流（I4），该抑制电流（I4）在驱动电流（Idrive）上升到激光二极管（1）之后，立即将出现过冲之后的驱动电流（Idrive）减小。驱动电路吸收抑制电流（I5），其在驱动电流（Idrive）从驱动电流（Idrive）下降时发生下冲之后立即减小驱动电流（Idrive）的增加。

8. 发明授权

US07372882B2 Driving circuit for and semiconductor device for driving laser diode 失效
标题翻译：用于驱动激光二极管的驱动电路和半导体器件
公开(公告)号：US07372882B2
公开(公告)日：2008-05-13
申请号：US11115133
申请日：2005-04-27
申请人： Tsuyoshi Horiuchi , Takehiko Umeyama
发明人： Tsuyoshi Horiuchi , Takehiko Umeyama
IPC分类号： H01S3/00
CPC分类号： H01S5/042 , H01S5/0427
摘要： A driving circuit supplies a suppression current (I4) which reduces a decrease in a driving current (Idrive) immediately after occurrence of an overshoot at the time of the rise of the driving current (Idrive) to a laser diode (1). The driving circuit draws a suppression current (I5) which reduces an increase in the driving current (Idrive) immediately after occurrence of an undershoot at the time of the fall of the driving current (Idrive) from the driving current (Idrive).
摘要翻译：驱动电路提供抑制电流（I 4），该抑制电流（I 4）在驱动电流（Idrive）上升到激光二极管（1）之后，立即将出现过冲之后的驱动电流（Idrive）减小。驱动电路在驱动电流（Idrive）从驱动电流（Idrive）下降时，产生抑制电流（I 5），该抑制电流（I 5）在即将发生下冲之后立即减小驱动电流（Idrive）的增加。

9. 发明授权

US07187513B2 Differential magneto-resistive head pre-amplifiers for single polarity power supply applications 有权
标题翻译：用于单极性电源应用的差分磁阻头前置放大器
公开(公告)号：US07187513B2
公开(公告)日：2007-03-06
申请号：US10172368
申请日：2002-06-14
申请人： Takehiko Umeyama , Robert B. Ross , Masashige Tada
发明人： Takehiko Umeyama , Robert B. Ross , Masashige Tada
IPC分类号： G11B5/03
CPC分类号： G11B5/02 , G11B5/012 , G11B2005/0016 , G11B2005/0018
摘要： Magneto-resistive (MR) head pre-amplifiers for single polarity power supply applications are presented. An exemplary pre-amplifier includes a bias network coupled to first and second input terminals of the pre-amplifier, the input terminals for receiving signals corresponding to variations in magnetic fields from an MR head. At least one gain stage having first and second input terminals and first and second output terminals for amplifying the received signals is included. A pair of coupling capacitors, each capacitor being connected between a respective input terminal of the pre-amplifier and a corresponding respective input terminal of the at least one gain stage, are further included in the pre-amplifier design. Finally, the exemplary pre-amplifier includes a pair of feedback capacitors, each capacitor being connected between respective input and output terminals of the at least one gain stage. The pre-amplifier is powered by a single polarity power supply.
摘要翻译：介绍了用于单极性电源应用的磁阻（MR）磁头前置放大器。示例性前置放大器包括耦合到前置放大器的第一和第二输入端的偏置网络，用于接收对应于来自MR磁头的磁场变化的信号的输入端。包括具有第一和第二输入端的至少一个增益级和用于放大接收信号的第一和第二输出端。在前置放大器设计中还包括一对耦合电容器，每个电容器连接在前置放大器的相应输入端子和至少一个增益级的对应的相应输入端子之间。最后，示例性前置放大器包括一对反馈电容器，每个电容器连接在至少一个增益级的相应的输入和输出端子之间。前置放大器由单极性电源供电。

10. 发明授权

US5568103A Current control circuit of ring oscillator 失效
标题翻译：环形振荡器的电流控制电路
公开(公告)号：US5568103A
公开(公告)日：1996-10-22
申请号：US499917
申请日：1995-07-11
申请人： Teruya Nakashima , Takehiko Umeyama
发明人： Teruya Nakashima , Takehiko Umeyama
IPC分类号： H03K3/354 , H03K3/03 , H03B5/24 , H03B5/00 , H03L7/00 , H03L7/085
CPC分类号： H03K3/0315
摘要： A current control circuit of a ring oscillator is provided for use in the PLL oscillators. A current control circuit used in the ring oscillator comprises a first circuit having a first current source and a first transistor connected in series; a second circuit connected with the first circuit in parallel and having n second constant current sources and n second transistors connected in series, respectively, the second transistors are current mirrored with the first transistor in the first circuit, respectively; a third circuit connected with the first circuit in parallel and having a third transistor and a fourth transistor connected in series, the fourth transistor is current mirrored with the first transistor; n diodes connected to a connecting point of said third transistor and the fourth transistor for supplying currents to connecting points of n second constant current sources and the second transistor, respectively; an input terminal connected with the connecting point of the first constant current source and the first transistor.
摘要翻译：提供环形振荡器的电流控制电路用于PLL振荡器。在环形振荡器中使用的电流控制电路包括具有串联连接的第一电流源和第一晶体管的第一电路; 分别与第一电路并联连接并具有n个第二恒定电流源的第二电路和分别串联连接的n个第二晶体管，第二晶体管分别与第一电路中的第一晶体管电流镜像; 与第一电路并联连接并具有串联连接的第三晶体管和第四晶体管的第三电路，第四晶体管与第一晶体管电流镜像; 连接到所述第三晶体管和第四晶体管的连接点的n个二极管分别用于向n个第二恒定电流源和第二晶体管的连接点提供电流; 与第一恒定电流源和第一晶体管的连接点连接的输入端子。

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