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公开(公告)号：US07239467B2
公开(公告)日：2007-07-03
申请号：US10834194
申请日：2004-04-29
CPC分类号： G11B5/035 , G11B5/012 , G11B5/02 , G11B5/4833 , G11B5/484 , G11B33/121 , G11B33/122
摘要： The storage media recording/writing system includes a media drive circuit, a head retaining means, a head moving means, a head drive circuit, a signal processing circuit, and a controller to control these. The head drive circuit possesses a first semiconductor integrated circuit having an amplifier that amplifies the read signal from the head, and a second semiconductor integrated circuit placed between the first semiconductor integrated circuit and the signal processing circuit, which has a circuit that receives write data from the signal processing circuit and generates a drive signal to drive a write head. Further, the first semiconductor integrated circuit is mounted on a part near the front of the head retaining means, and the second semiconductor integrated circuit is installed on the side of the moving means.
摘要翻译： 存储介质记录/写入系统包括介质驱动电路，磁头保持装置，磁头移动装置，磁头驱动电路，信号处理电路和控制器。 头驱动电路具有第一半导体集成电路，其具有放大器，用于放大来自头部的读取信号的放大器，以及放置在第一半导体集成电路和信号处理电路之间的第二半导体集成电路，该电路具有接收来自 信号处理电路，并产生驱动写入头的驱动信号。 此外，第一半导体集成电路安装在靠近头保持装置的前部的部分上，并且第二半导体集成电路安装在移动装置的一侧。
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公开(公告)号：US20070121237A1
公开(公告)日：2007-05-31
申请号：US11604849
申请日：2006-11-28
IPC分类号： G11B5/03
CPC分类号： G11B5/02 , G11B2005/0018
摘要： A magnetic disk apparatus-purpose reproducing circuit capable of performing a high speed and under stable condition. In the magnetic disk apparatus-purpose reproducing circuit equipped with: a bias circuit for applying a bias voltage with respect to an MR (Magneto-Resistive) head, an amplification circuit for amplifying an output of the MR head, capacitors C0 and C1 for cutting a DC component contained in the output of the MR head, and a conductor amplifier for applying an input bias of the amplifier, a shortcircuit-purpose switch S0 for charging the DC cut capacitors are further provided. When a mode transition from a write mode to a read mode occurs, the shortcircuit-purpose switch S0 is turned ON so as to charge the DC cut capacitors, so that a mode transition characteristic capable of establishing a high speed characteristic and a stable characteristic can be obtained.
摘要翻译： 一种能够执行高速和稳定状态的磁盘装置用再现电路。 在配备有用于对MR（磁电阻）磁头施加偏置电压的偏置电路的磁盘装置用再现电路中，放大用于放大MR磁头的输出的放大电路，电容器C 0和C 1 为了切割包含在MR磁头的输出端的DC分量，以及用于施加放大器的输入偏置的导体放大器，还提供用于对DC切断电容器充电的短路用开关S 0。 当从写入模式转换到读取模式时，短路用开关S 0导通，以对直流切断电容器充电，使得能够建立高速特性和稳定特性的模式转变特性 可以获得。
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公开(公告)号：US06762896B2
公开(公告)日：2004-07-13
申请号：US09902581
申请日：2001-07-12
IPC分类号： G11B502
CPC分类号： G11B5/035 , G11B5/012 , G11B5/02 , G11B5/4833 , G11B5/484 , G11B33/121 , G11B33/122
摘要： The storage media recording/writing system includes a media drive circuit, a head retaining means, a head moving means, a head drive circuit, a signal processing circuit, and a controller to control these. The head drive circuit possesses a first semiconductor integrated circuit having an amplifier that amplifies the read signal from the head, and a second semiconductor integrated circuit placed between the first semiconductor integrated circuit and the signal processing circuit, which has a circuit that receives write data from the signal processing circuit and generates a drive signal to drive a write head. Further, the first semiconductor integrated circuit is mounted on a part near the front of the head retaining means, and the second semiconductor integrated circuit is installed on the side of the moving means.
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公开(公告)号：US08598939B2
公开(公告)日：2013-12-03
申请号：US13350801
申请日：2012-01-15
IPC分类号： H03K17/13
CPC分类号： H03K17/6874 , G01S7/52017
摘要： A T/R switch applicable to an ultrasonograph and capable of transmitting a signal reflected from a living body over a wide band with low noise without causing erroneous operation of the switch or element destruction even when the potential of a transmission signal or reflected signal changes includes: a common source terminal commonly and serially coupling the source terminals of two MOS transistors; a common gate terminal commonly coupling the gate terminals of the two MOS transistors; a main switch, the drain terminals of which are connected to input/output terminals; and a floating voltage circuit which is connected to the common gate terminal and common source terminal, makes the common gate terminal potential follow, in phase, variation in the common source terminal potential, and sends a signal to turn the switch on or off to the common gate terminal.
摘要翻译： 适用于超声波诊断装置的AT / R开关，能够以较低的噪声在宽带上发送从生物体反射的信号，即使在发送信号或反射信号的电位变化的情况下，也不会导致开关或元件破坏的错误操作， 公共源极端子共同并串联耦合两个MOS晶体管的源极端子; 通常连接两个MOS晶体管的栅极端子的公共栅极端子; 主开关，其漏极端子连接到输入/输出端子; 以及与公共栅极端子和公共源极端子连接的浮置电压电路，使公共栅极电位跟随同相源极端子电位的相位变化，并发送信号将开关接通或断开 普通门终端。
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5.发明授权公开(公告)号：US08143924B2
公开(公告)日：2012-03-27
申请号：US12685024
申请日：2010-01-11
IPC分类号： H03K3/00
CPC分类号： H03K17/74 , H03K17/6874
摘要： There is provided a circuit whose output is free from high impedance to improve wrong transmission and waveform overshoot, realizing a semiconductor integrated circuit device in which plural channels is integrated with transmitter circuit as unit channel, in the transmitter circuit used in a medical ultrasound system and drives a transducer by voltage pulses having plural positive and negative electric potentials including ground potential. The transmitter circuit includes a conventional pulse generating circuit supplied with positive and negative voltage largest in absolute value, a P-channel analog switching pulse generating circuit supplied with positive voltage being the second largest therein, an N-channel analog switching pulse generating circuit supplied with negative voltage being the second largest, and an N-channel analog switching ground level damping circuit supplied with ground potential. The circuits are connected to output terminal. Switch control signals drive ultrasound transducers by turning on and off the circuits.
摘要翻译： 提供了一种电路，其输出没有高阻抗以改善错误的传输和波形过冲，实现了在用于医疗超声系统的发射机电路中多个信道与作为单位信道的发射机电路集成的半导体集成电路器件， 通过具有包括地电位的多个正电位和负电位的电压脉冲驱动换能器。 发送器电路包括以绝对值最大的正，负电压供给的常规脉冲发生电路，提供有其中第二大的正电压的P沟道模拟开关脉冲发生电路，提供有N沟道模拟开关脉冲发生电路 负电压为第二大，N沟道模拟开关接地电平阻尼电路提供地电位。 电路连接到输出端子。 开关控制信号通过打开和关闭电路来驱动超声波换能器。
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公开(公告)号：US20100214006A1
公开(公告)日：2010-08-26
申请号：US12685024
申请日：2010-01-11
IPC分类号： H03K17/687
CPC分类号： H03K17/74 , H03K17/6874
摘要： There is provided a circuit whose output is free from high impedance to improve wrong transmission and waveform overshoot, realizing a semiconductor integrated circuit device in which plural channels is integrated with transmitter circuit as unit channel, in the transmitter circuit used in a medical ultrasound system and drives a transducer by voltage pulses having plural positive and negative electric potentials including ground potential. The transmitter circuit includes a conventional pulse generating circuit supplied with positive and negative voltage largest in absolute value, a P-channel analog switching pulse generating circuit supplied with positive voltage being the second largest therein, an N-channel analog switching pulse generating circuit supplied with negative voltage being the second largest, and an N-channel analog switching ground level damping circuit supplied with ground potential. The circuits are connected to output terminal. Switch control signals drive ultrasound transducers by turning on and off the circuits.
摘要翻译： 提供了一种电路，其输出没有高阻抗以改善错误的传输和波形过冲，实现了在用于医疗超声系统的发射机电路中多个信道与作为单位信道的发射机电路集成的半导体集成电路器件， 通过具有包括地电位的多个正电位和负电位的电压脉冲驱动换能器。 发送器电路包括以绝对值最大的正，负电压供给的常规脉冲发生电路，提供有其中第二大的正电压的P沟道模拟开关脉冲发生电路，提供有N沟道模拟开关脉冲发生电路 负电压为第二大，N沟道模拟开关接地电平阻尼电路提供地电位。 电路连接到输出端子。 开关控制信号通过打开和关闭电路来驱动超声波换能器。
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公开(公告)号：US20070230008A1
公开(公告)日：2007-10-04
申请号：US11698164
申请日：2007-01-26
IPC分类号： G11B5/03
CPC分类号： G11B5/40 , G11B2005/0016
摘要： A reproducing circuit for magnetic disks wherein a MR head bias voltage does not exceed the specified value during any malfunction of the power supply voltage including the cases of power supply ON/OFF, and the central voltage of the MR head is controlled to the ground. The reproducing circuit for magnetic disk apparatus is composed of a MR head, a bias circuit that provides bias voltage specified relative to the MR head, an amplifying circuit for amplifying the output signals of the MR head, a power supply voltage monitor circuit that monitors the changes in the power supply voltage, and a control circuit that is controlled by the power supply voltage monitor circuit. MR bias voltage does not exceed the specified value during any malfunction of the power supply voltage including the cases of power supply ON/OFF, and the central voltage of the MR head is controlled to the ground such that the MR head is protected.
摘要翻译： 一种用于磁盘的再现电路，其中在包括电源接通/断开的情况的电源电压的任何故障期间，MR头偏置电压不超过指定值，并且MR磁头的中心电压被控制到地面。 用于磁盘装置的再现电路由MR头，提供相对于MR头指定的偏置电压的偏置电路，用于放大MR磁头的输出信号的放大电路，监视电路的电源电压监视电路 电源电压的变化，以及由电源电压监视电路控制的控制电路。 包括电源ON / OFF在内的电源电压发生故障期间，MR偏置电压不超过规定值，MR磁头的中心电压控制在地，以保护MR磁头。
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公开(公告)号：US08093931B2
公开(公告)日：2012-01-10
申请号：US12420253
申请日：2009-04-08
申请人： Toshio Shinomiya , Akio Koyama , Yuji Yokoyama
发明人： Toshio Shinomiya , Akio Koyama , Yuji Yokoyama
IPC分类号： H03L7/00
CPC分类号： H03K17/223 , G06F1/24
摘要： In a semiconductor integrated circuit device generating internal power from external power, an abnormal operation may occur due to an indefinite state of a control signal when the external power is applied and the internal power rises. The semiconductor integrated circuit includes an internal power generating circuit, a control circuit receiving internal power and supplying a first control signal, and a power-on reset circuit generating a reset signal at rising of the internal power. When internal power rises, the reset signal masks an indefinite state of the first control signal supplied from the control circuit.
摘要翻译： 在从外部电力产生内部电力的半导体集成电路装置中，当施加外部电力并且内部电力上升时，可能由于控制信号的不确定状态而发生异常操作。 半导体集成电路包括内部发电电路，接收内部电力并提供第一控制信号的控制电路，以及在内部电力上升时产生复位信号的上电复位电路。 当内部电源上升时，复位信号屏蔽从控制电路提供的第一控制信号的不确定状态。
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