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1. 发明授权

US08565048B1 Unipolar current driver 有权
标题翻译：单极电流驱动器
公开(公告)号：US08565048B1
公开(公告)日：2013-10-22
申请号：US13472448
申请日：2012-05-15
申请人： Ross S. Wilson , Jason P. Brenden , Xuemin Yang
发明人： Ross S. Wilson , Jason P. Brenden , Xuemin Yang
IPC分类号： G11B11/00 , H01S3/00
CPC分类号： G11B5/02 , G11B2005/0021 , H01S5/0427
摘要： Various embodiments of the present invention provide single-ended and differential current drivers for heat assisted magnetic recording and other applications. For example, a current driver is disclosed that includes an upper output terminal and lower output terminal, a number of current switches operable to selectively contribute electrical currents through the upper and lower output terminals, a control input for each of the current switches operable to control the electrical currents, and a voltage supply operable to establish a voltage across the upper and output terminals.
摘要翻译：本发明的各种实施例提供用于热辅助磁记录和其它应用的单端和差动电流驱动器。例如，公开了一种电流驱动器，其包括上部输出端子和下部输出端子，多个电流开关，其可操作以选择性地提供通过上部和下部输出端子的电流;每个电流开关的控制输入可操作以控制电流和可用于在上部和输出端子上建立电压的电压源。

2. 发明授权

US08774643B2 Optical source driver circuit having overshoot controller 失效
标题翻译：具有过冲控制器的光源驱动电路
公开(公告)号：US08774643B2
公开(公告)日：2014-07-08
申请号：US13525982
申请日：2012-06-18
申请人： Jason P. Brenden , Xuemin Yang , Cameron C. Rabe
发明人： Jason P. Brenden , Xuemin Yang , Cameron C. Rabe
IPC分类号： H04B10/04
CPC分类号： H01S5/042 , G11B7/1263 , G11B2005/0021
摘要： A driver circuit configured to generate a drive signal for an optical source comprises an overshoot controller that provides an amount of overshoot for a given logic state of the drive signal as a function of a duration of at least one previous logic state of the drive signal. The drive signal may alternate between a first logic state associated with a first operating mode of the optical source and a second logic state associated with a second operating mode of the optical source. The overshoot controller may be configured to provide amounts of overshoot for respective instances of the first logic state that are proportional to the durations of their respective immediately preceding second logic states. The driver circuit may be implemented in a heat-assisted magnetic recording system in which the optical source alternates between on and off states associated with respective magnetic write and magnetic read modes.
摘要翻译：被配置为产生用于光源的驱动信号的驱动器电路包括过冲控制器，该过冲控制器根据驱动信号的至少一个先前逻辑状态的持续时间，为驱动信号的给定逻辑状态提供过冲量。驱动信号可以在与光源的第一操作模式相关联的第一逻辑状态与与光源的第二操作模式相关联的第二逻辑状态之间交替。过冲控制器可以被配置为提供与第一逻辑状态相对应的相应实例的量，其与第二逻辑状态的持续时间成正比。驱动器电路可以在热辅助磁记录系统中实现，其中光源在与相应磁写和磁读取模式相关联的导通和截止状态之间交替。

3. 发明申请

US20130336663A1 OPTICAL SOURCE DRIVER CIRCUIT HAVING OVERSHOOT CONTROLLER 失效
标题翻译：具有海外控制器的光源驱动电路
公开(公告)号：US20130336663A1
公开(公告)日：2013-12-19
申请号：US13525982
申请日：2012-06-18
申请人： Jason P. Brenden , Xuemin Yang , Cameron C. Rabe
发明人： Jason P. Brenden , Xuemin Yang , Cameron C. Rabe
IPC分类号： H01S3/10 , G11B13/04 , H04B10/04 , G11B7/126
CPC分类号： H01S5/042 , G11B7/1263 , G11B2005/0021
摘要： A driver circuit configured to generate a drive signal for an optical source comprises an overshoot controller that provides an amount of overshoot for a given logic state of the drive signal as a function of a duration of at least one previous logic state of the drive signal. The drive signal may alternate between a first logic state associated with a first operating mode of the optical source and a second logic state associated with a second operating mode of the optical source. The overshoot controller may be configured to provide amounts of overshoot for respective instances of the first logic state that are proportional to the durations of their respective immediately preceding second logic states. The driver circuit may be implemented in a heat-assisted magnetic recording system in which the optical source alternates between on and off states associated with respective magnetic write and magnetic read modes.
摘要翻译：被配置为产生用于光源的驱动信号的驱动器电路包括过冲控制器，该过冲控制器根据驱动信号的至少一个先前逻辑状态的持续时间，为驱动信号的给定逻辑状态提供过冲量。驱动信号可以在与光源的第一操作模式相关联的第一逻辑状态与与光源的第二操作模式相关联的第二逻辑状态之间交替。过冲控制器可以被配置为提供与第一逻辑状态相对应的相应实例的量，其与第二逻辑状态的持续时间成正比。驱动器电路可以在热辅助磁记录系统中实现，其中光源在与相应磁写和磁读取模式相关联的导通和截止状态之间交替。

4. 发明申请

US20140043087A1 HIGH ACCURACY BIPOLAR CURRENT MULTIPLIER WITH BASE CURRENT COMPENSATION 审中-公开
标题翻译：具有基极电流补偿的高精度双极电流互感器
公开(公告)号：US20140043087A1
公开(公告)日：2014-02-13
申请号：US13569672
申请日：2012-08-08
申请人： Yan Li , Xuemin Yang
发明人： Yan Li , Xuemin Yang
IPC分类号： G06G7/16
CPC分类号： G06G7/16
摘要： A bipolar current multiplier apparatus and method includes a group of negative feedback loop circuits for compensating base current loss, and multiple bipolar devices that communicate electronically with the negative feedback loop circuits, wherein the bipolar devices are responsive to base currents capable of being self-cancelled due to a presence of the negative feedback loop circuits, thereby ensuring that an output is stabilized over temperature and process variations while providing for a wide input dynamic range. In some embodiments, the bipolar current multiplier apparatus can be associated with a preamplifier for a hard disk drive to calculate the output power associated with a power driver that controls the flying height of read/write heads of the hard disk drive.
摘要翻译：双极性电流倍增器装置和方法包括一组用于补偿基极电流损耗的负反馈回路电路以及与负反馈回路电路进行电子通信的多个双极器件，其中双极器件响应于能够自取消的基极电流由于存在负反馈回路电路，从而确保输出在温度和过程变化方面稳定，同时提供宽的输入动态范围。在一些实施例中，双极性电流倍增器装置可以与用于硬盘驱动器的前置放大器相关联，以计算与控制硬盘驱动器的读/写头的飞行高度的功率驱动器相关联的输出功率。

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