公开(公告)号：US06233206B1

公开(公告)日：2001-05-15

申请号：US09427169

申请日：1999-10-26

Applicant: Hendrik F. Hamann ,  Yves Martin ,  Hemantha Kumar Wickramasinghe

Inventor： Hendrik F. Hamann ,  Yves Martin ,  Hemantha Kumar Wickramasinghe

IPC: G11B1100

CPC classification number: G11B5/00 ,  B82Y10/00 ,  G11B9/1409 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10S977/833 ,  Y10S977/862 ,  Y10S977/863 ,  Y10S977/865 ,  Y10S977/867 ,  Y10S977/881

Abstract: The assembly of the present invention preferably writes by way of thermal near-field coupling between a thermal heater and a media. The thermal heater may comprise an atomic force microscope probe or a magnetic force microscope; and, preferably reads by way of a local magnetic sensor preferably comprising a magnetic force microscope which can yield spatial resolutions down to e.g., 250 Å.

Abstract translation: 本发明的组件优选地通过热式加热器和介质之间的热近场耦合来写入。 热加热器可以包括原子力显微镜探针或磁力显微镜; 并且优选地通过优选地包括磁力显微镜的本地磁传感器来读取，所述磁力显微镜可以产生低于例如250的空间分辨率。

公开(公告)号：US08178362B2

公开(公告)日：2012-05-15

申请号：US12839451

申请日：2010-07-20

Applicant: Hemantha Kumar Wickramasinghe ,  Kailash Gopalakrishnan

Inventor： Hemantha Kumar Wickramasinghe ,  Kailash Gopalakrishnan

IPC: H01L21/00

CPC classification number: H01L27/1203 ,  G11C16/08 ,  H01L21/84 ,  H01L27/115 ,  Y10S977/936 ,  Y10S977/938 ,  Y10S977/958

Abstract: An electronically scannable multiplexing device is capable of addressing multiple bits within a volatile or non-volatile memory cell. The multiplexing device generates an electronically scannable conducting channel with two oppositely formed depletion regions. The depletion width of each depletion region is controlled by a voltage applied to a respective control gate at each end of the multiplexing device. The present multi-bit addressing technique allows, for example, 10 to 100 bits of data to be accessed or addressed at a single node. The present invention can also be used to build a programmable nanoscale logic array or for randomly accessing a nanoscale sensor array.

Abstract translation: 电子扫描复用设备能够寻址易失性或非易失性存储器单元内的多个位。 多路复用装置产生具有两个相对形成的耗尽区的电子扫描导电通道。 每个耗尽区的耗尽宽度由施加到多路复用器件每端的相应控制栅极的电压控制。 目前的多位寻址技术允许例如在单个节点上访问或寻址10到100位的数据。 本发明还可用于构建可编程纳米尺度逻辑阵列或用于随机访问纳米级传感器阵列。

公开(公告)号：US06920088B2

公开(公告)日：2005-07-19

申请号：US09774943

申请日：2001-01-31

Applicant: Hemantha Kumar Wickramasinghe ,  Hendrik F. Hamann ,  Yves Martin

Inventor： Hemantha Kumar Wickramasinghe ,  Hendrik F. Hamann ,  Yves Martin

IPC: G01Q30/10 ,  G01Q60/00 ,  G01Q90/00 ,  G11B9/00 ,  G11B11/05

CPC classification number: G11B9/14 ,  B82Y10/00 ,  G11B9/1409 ,  G11B9/1418 ,  G11B2005/0021 ,  Y10S977/947

Abstract: The invention discloses an assembly capable of writing/erasing high-density data, preferably on a phase-change recording media. A preferred embodiment of the invention features a novel thermal near-field heater that may be employed in the assembly, preferably for writing in a substantially thermal near-field mode. The invention provides advantages of writing densities greater than that of diffraction limited systems, for example, writing densities of approximately greater than 100 Gbit/inch2, and writing speeds approximately greater than 100 MHz.

Abstract translation: 本发明公开了一种能够写入/擦除高密度数据的组件，优选地在相变记录介质上。 本发明的优选实施例的特征在于一种新的热近场加热器，其可用于组件中，优选用于以基本上热的近场模式进行写入。 本发明提供了比衍射受限系统的写入密度更大的优点，例如大约大于100Gbit /英寸2的写入密度以及大约大于100MHz的写入速度。

公开(公告)号：US6088176A

公开(公告)日：2000-07-11

申请号：US581877

申请日：1996-01-02

Applicant: Gordon J. Smith ,  Hal Hjalmar Ottesen ,  David William Abraham ,  Anthony Paul Praino ,  Mark Edward Re ,  Hemantha Kumar Wickramasinghe

Inventor： Gordon J. Smith ,  Hal Hjalmar Ottesen ,  David William Abraham ,  Anthony Paul Praino ,  Mark Edward Re ,  Hemantha Kumar Wickramasinghe

IPC: G01N25/72 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/596 ,  G11B5/60 ,  G11B5/82 ,  G11B11/00 ,  G11B11/06 ,  G11B13/00 ,  G11B17/32 ,  G11B19/04 ,  G11B20/10 ,  G11B20/24 ,  G11B33/10 ,  G11B5/09

CPC classification number: G01N25/72 ,  G11B11/00 ,  G11B13/00 ,  G11B17/32 ,  G11B20/10009 ,  G11B20/24 ,  G11B33/10 ,  G11B5/00 ,  G11B5/012 ,  G11B5/59683 ,  G11B11/06 ,  G11B19/04 ,  G11B2005/0021 ,  G11B5/02 ,  G11B5/59633 ,  G11B5/6005 ,  G11B5/82

Abstract: An apparatus and method for reading an information signal from a magnetic storage medium using a magnetoresistive (MR) head, and separating a thermal signal component and, if present, a magnetic signal component from the information signal. A signal separation/restoration module eliminates distortion in the magnetic signal component of a readback signal induced by a thermal signal component of the readback signal. A finite impulse response (FIR) filter may be employed in the signal separation/restoration module to eliminate the distortion in the magnetic signal. The signal separation/restoration module may be employed to extract the thermal signal component from the readback signal. In one configuration, an MR head is coupled to an arm electronics (AE) module, having a highpass filtering behavior, and a signal separation/restoration module that includes an inverse filter having a transfer function inverse to that of the effective highpass filter of the AE module. The inverse filter may be an infinite impulse response (IIR) filter. In another embodiment, the magnetic and thermal signal components of a readback signal are respectively extracted and processed so as to linearly correspond to head-to-disk spacing. Head-to-disk spacing change using the thermal signal is used to detect disk surface defects, topographic variations, and servo control surface variations.

Abstract translation: 一种用于使用磁阻（MR）磁头从磁存储介质读取信息信号并从信息信号分离热信号分量以及如果存在磁信号分量的装置和方法。 信号分离/恢复模块消除由回读信号的热信号分量引起的回读信号的磁信号分量中的失真。 可以在信号分离/恢复模块中采用有限脉冲响应（FIR）滤波器来消除磁信号中的失真。 信号分离/恢复模块可用于从回读信号中提取热信号分量。 在一种配置中，MR头耦合到具有高通滤波特性的臂电子装置（AE）模块，以及信号分离/恢复模块，其包括具有与有效高通滤波器相反的传递函数的逆滤波器 AE模块。 逆滤波器可以是无限脉冲响应（IIR）滤波器。 在另一个实施例中，回读信号的磁信号和热信号分量分别被提取和处理，以便线对应于磁头到磁盘的间隔。 使用热信号的磁头到磁盘间距的变化用于检测磁盘表面缺陷，地形变化和伺服控制表面变化。

公开(公告)号：US5850374A

公开(公告)日：1998-12-15

申请号：US636384

申请日：1996-04-23

Applicant: David William Abraham ,  Anthony Paul Praino ,  Mark Edward Re ,  Hemantha Kumar Wickramasinghe

Inventor： David William Abraham ,  Anthony Paul Praino ,  Mark Edward Re ,  Hemantha Kumar Wickramasinghe

IPC: G01N25/72 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/596 ,  G11B5/60 ,  G11B5/82 ,  G11B11/00 ,  G11B11/06 ,  G11B13/00 ,  G11B17/32 ,  G11B19/04 ,  G11B20/10 ,  G11B20/24 ,  G11B33/10

CPC classification number: G11B20/10009 ,  G01N25/72 ,  G11B11/00 ,  G11B13/00 ,  G11B17/32 ,  G11B20/24 ,  G11B33/10 ,  G11B5/00 ,  G11B5/012 ,  G11B5/59683 ,  G11B5/607 ,  G11B11/06 ,  G11B19/04 ,  G11B2005/0021 ,  G11B5/02 ,  G11B5/59633 ,  G11B5/6005 ,  G11B5/82

Abstract: A method and apparatus for accessing a data storage medium having raised and lowered portions indicative of data stored on the medium. Energy is supplied to a sensor which is moved relative to, and in close proximity to, a surface of the medium on which the data in the form of raised and lowered portions is stored. The sensor and the storage medium are moved in relation thereto, such that the sensor remains at a substantially constant fly spacing therefrom. A decrease in temperature of the sensor is detected when it is in proximity to a variation, i.e., a raised portion on the medium. This detected decrease in temperature associated with a raised variation, e.g., asperity, can be used as the basis upon which to detect the data on the data storage medium. The data storage medium may also contain magnetically stored data, such that the surface variations and the magnetic characteristics of the data storage medium can both be utilized to store data thereon.

公开(公告)号：US5691540A

公开(公告)日：1997-11-25

申请号：US643090

申请日：1996-04-30

Applicant: Scott D. Halle ,  Philip Charles Danby Hobbs ,  Tadashi Mitsui ,  Theodore G. van Kessel ,  Hemantha Kumar Wickramasinghe

Inventor： Scott D. Halle ,  Philip Charles Danby Hobbs ,  Tadashi Mitsui ,  Theodore G. van Kessel ,  Hemantha Kumar Wickramasinghe

IPC: G01B11/22

CPC classification number: G01B11/22

Abstract: An assembly for measuring a trench depth parameter of a workpiece is disclosed. The assembly has an ultra-violet radiation source; a split fiber bundle having a first branch for propagating the ultra-violet radiation from the radiation source to a lens, and a second branch; a lens for focusing the UV radiation to the workpiece and refocusing an ultra-violet interference signal to the second branch; and a detector responsive to the ultra-violet interference signal received through the second branch. The detector transforms the ultra-violet interference signal to an electrical signal which is a measure of a trench depth of the workpiece. The ultra-violet interference signal is developed when ultra-violet radiation propagates through the workpiece and reflects from its base region to thereby interfere with ultra-violet radiation that is directly reflected by a workpiece surface which is different from the base region.

Abstract translation: 公开了一种用于测量工件的沟槽深度参数的组件。 该组件具有紫外辐射源; 具有用于将紫外辐射从辐射源传播到透镜的第一分支的分裂光纤束和第二分支; 用于将UV辐射聚焦到工件并将紫外干涉信号重新聚焦到第二分支的透镜; 以及响应于通过第二分支接收的紫外干涉信号的检测器。 检测器将紫外线干涉信号转换成电信号，该电信号是工件的沟槽深度的量度。 当紫外线辐射传播通过工件并从其底部区域反射时，紫外线干涉信号被开发，从而干扰由与基底区域不同的工件表面直接反射的紫外辐射。

公开(公告)号：US20090102538A1

公开(公告)日：2009-04-23

申请号：US12338275

申请日：2008-12-18

Applicant: Hemantha Kumar Wickramasinghe ,  Kailash Gopalakrishnan

Inventor： Hemantha Kumar Wickramasinghe ,  Kailash Gopalakrishnan

IPC: H03K17/00

CPC classification number: H01L27/1203 ,  G11C16/08 ,  H01L21/84 ,  H01L27/115 ,  Y10S977/936 ,  Y10S977/938 ,  Y10S977/958

Abstract: An electronically scannable multiplexing device is capable of addressing multiple bits within a volatile or non-volatile memory cell. The multiplexing device generates an electronically scannable conducting channel with two oppositely formed depletion regions. The depletion width of each depletion region is controlled by a voltage applied to a respective control gate at each end of the multiplexing device. The present multi-bit addressing technique allows, for example, 10 to 100 bits of data to be accessed or addressed at a single node. The present invention can also be used to build a programmable nanoscale logic array or for randomly accessing a nanoscale sensor array.

Abstract translation: 电子扫描复用设备能够寻址易失性或非易失性存储器单元内的多个位。 多路复用装置产生具有两个相对形成的耗尽区的电子扫描导电通道。 每个耗尽区的耗尽宽度由施加到多路复用器件每端的相应控制栅极的电压控制。 目前的多位寻址技术允许例如在单个节点上访问或寻址10到100位的数据。 本发明还可用于构建可编程纳米尺度逻辑阵列或用于随机访问纳米级传感器阵列。

公开(公告)号：US07352029B2

公开(公告)日：2008-04-01

申请号：US11117276

申请日：2005-04-27

Applicant: Hemantha Kumar Wickramasinghe ,  Kailash Gopalakrishnan

Inventor： Hemantha Kumar Wickramasinghe ,  Kailash Gopalakrishnan

IPC: H01L29/76 ,  H01L29/94 ,  H01L31/062 ,  H01L31/113 ,  H01L31/119

CPC classification number: H01L27/1203 ,  G11C16/08 ,  H01L21/84 ,  H01L27/115 ,  Y10S977/936 ,  Y10S977/938 ,  Y10S977/958

Abstract: An electronically scannable multiplexing device is capable of addressing multiple bits within a volatile or non-volatile memory cell. The multiplexing device generates an electronically scannable conducting channel with two oppositely formed depletion regions. The depletion width of each depletion region is controlled by a voltage applied to a respective control gate at each end of the multiplexing device. The present multi-bit addressing technique allows, for example, 10 to 100 bits of data to be accessed or addressed at a single node. The present invention can also be used to build a programmable nanoscale logic array or for randomly accessing a nanoscale sensor array.

Abstract translation: 电子扫描复用设备能够寻址易失性或非易失性存储器单元内的多个位。 多路复用装置产生具有两个相对形成的耗尽区的电子扫描导电通道。 每个耗尽区的耗尽宽度由施加到多路复用器件每端的相应控制栅极的电压控制。 目前的多位寻址技术允许例如在单个节点上访问或寻址10到100位的数据。 本发明还可用于构建可编程纳米尺度逻辑阵列或用于随机访问纳米级传感器阵列。

公开(公告)号：US06771445B1

公开(公告)日：2004-08-03

申请号：US09540726

申请日：2000-03-31

Applicant: Hendrik F. Hamann ,  Yves Martin ,  Hemantha Kumar Wickramasinghe

Inventor： Hendrik F. Hamann ,  Yves Martin ,  Hemantha Kumar Wickramasinghe

IPC: G11B502

CPC classification number: B82Y10/00 ,  G11B5/00 ,  G11B5/09 ,  G11B9/1409 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021

Abstract: An assembly for writing/reading high-density data on a recording media as a series of tags comprising a magnetic information bit pattern. The assembly includes an antenna positionable near the media; a source of electromagnetic radiation for producing an incident wave at least a portion of which can be coupled to the antenna; and, a means for coordinating a mutual positioning of the source of the electromagnetic radiation and the antenna, so that the antenna can generate a highly localized electromagnetic field in the vicinity of the media for inducing localized heating of the media. The assembly is capable of writing/erasing said high-density data by using an information signal for modulating the localized field generated in the vicinity of the media; the assembly is capable of reading by coordinating the mutual positioning of the antenna and the media.

Abstract translation: 一种用于在记录介质上写入/读取高密度数据的组件，作为包括磁信息位模式的一系列标签。 组件包括可在介质附近定位的天线; 用于产生入射波的电磁辐射源，其至少一部分可耦合到天线; 以及用于协调电磁辐射源和天线的相互定位的装置，使得天线可以在介质附近产生高度局部化的电磁场，用于引起介质的局部加热。 该组件能够通过使用用于调制在介质附近产生的局部场的信息信号来写/擦除所述高密度数据; 该组件能够通过协调天线和介质的相互定位来读取。

公开(公告)号：US06757235B2

公开(公告)日：2004-06-29

申请号：US09774851

申请日：2001-01-31

Applicant: Hemantha Kumar Wickramasinghe ,  Hendrik F. Hamann ,  Yves Martin

Inventor： Hemantha Kumar Wickramasinghe ,  Hendrik F. Hamann ,  Yves Martin

IPC: G11B700

CPC classification number: B82Y10/00 ,  G11B9/00 ,  G11B9/14 ,  G11B9/1409 ,  G11B9/1418 ,  G11B9/1436

Abstract: An assembly suitable for reading data based on thermal coupling. The assembly can realize resolution/density specifications that can transcend diffraction limited focused laser beam techniques. The assembly includes a temperature sensor supported by a head-like structure, the temperature sensor capable of monitoring thermal coupling between the sensor and a media, and a heater element for heating the temperature sensor. A controller is used for coordinating a mutual positioning of the head-like structure and the media so that changes of thermal coupling between the assembly and a media provide indicia of a media bit pattern.

Abstract translation: 一种适合基于热耦合读取数据的组件。 该组件可以实现可以超越衍射限制聚焦的激光束技术的分辨率/密度规格。 组件包括由头状结构支撑的温度传感器，能够监测传感器和介质之间的热耦合的温度传感器和用于加热温度传感器的加热器元件。 控制器用于协调头状结构和介质的相互定位，使得组件和介质之间的热耦合的改变提供媒体位图案的标记。