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1.发明授权Image quality compensation method and apparatus for holographic data storage system 失效全息数据存储系统的图像质量补偿方法和装置
公开(公告)号：US5838650A
公开(公告)日：1998-11-17
申请号：US670923
申请日：1996-06-26
IPC分类号： G03H1/26 , G11B7/0065 , G11C7/00 , G11C13/04 , G11B7/00
CPC分类号： G11B7/0065 , G11C13/042 , G11C7/005
摘要： Feedback is employed in a holographic memory system to facilitate rapid access to information in a stored data page. This feedback technique provides compensation for thermal, optical and/or mechanical variations in the system components that tend to interrupt the projection of a data page image on a sensor array. A page indicator or mark is stored in a holographic storage medium with a page of data such that, during playback, a quality, e.g., intensity, of its projected image is indicative of the quality of the corresponding projected data page image. A corresponding page indicator sensor is employed with the associated sensor array to detect the quality of a projected page indicator image. The projected data page image can then be read by sensor elements of the detector based on the detected quality of the page indicator image. Such a detector can be implemented in an active pixel sensor (APS) array with the page indicator sensor being implemented as a region of the APS array. Registration of the sensor array elements with respect to projected data pixels of the data page image can also be aligned to an absolute or substantially nearest pixel alignment by a similar feedback technique.
摘要翻译： 在全息存储器系统中采用反馈以便于快速访问存储的数据页面中的信息。 该反馈技术为系统组件中的热，光学和/或机械变化提供了补偿，这些变化倾向于中断传感器阵列上的数据页图像的投影。 页面指示符或标记被存储在具有一页数据的全息存储介质中，使得在回放期间，其投影图像的质量（例如强度）表示对应的投影数据页图像的质量。 与相关联的传感器阵列一起使用相应的页面指示器传感器来检测投影页面指示图像的质量。 然后可以基于检测到的页面指示符图像的质量，由检测器的传感器元件读取投影的数据页面图像。 这种检测器可以在有源像素传感器（APS）阵列中实现，页面指示器传感器被实现为APS阵列的区域。 相对于数据页图像的投影数据像素的传感器阵列元件的登记也可以通过类似的反馈技术对准到绝对或基本上最近的像素对准。
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公开(公告)号：US5995676A
公开(公告)日：1999-11-30
申请号：US777154
申请日：1996-12-26
CPC分类号： G11B20/10009 , G11B7/005 , G11B7/0065
摘要： Embodiments of the invention include a method and apparatus for determining values for data reproduced or retrieved from data storage media such as in holographic memory systems. The method includes initially approximating the value of data members retrieved initially from the data storage medium of interest (e.g., by their intensity levels based on an absolute scale), using those approximations collectively to establish one or more threshold levels for defining ranges for the data values to be determined, and determining values for the retrieved data members by comparing the initial data value approximations of the retrieved data members to the established threshold levels. Alternatively, the threshold level(s) are set initially and adjusted iteratively based on the initial approximations of the individual data members until a final established threshold level is established. Advantageously, embodiments of the invention reduce data encoding overhead by using data members to establish comparative threshold levels for the determination of their intended values.
摘要翻译： 本发明的实施例包括一种用于确定从诸如全息存储器系统中的数据存储介质再现或检索的数据的值的方法和装置。 该方法包括首先近似来自感兴趣的数据存储介质最初检索的数据成员的值（例如，通过其基于绝对量表的强度级别），使用这些近似集合来建立用于定义数据范围的一个或多个阈值水平 要确定的值，以及通过将检索到的数据成员的初始数据值近似与所建立的阈值水平进行比较来确定检索到的数据成员的值。 或者，首先设置阈值水平，并且基于各个数据成员的初始近似来迭代地进行调整，直到建立最终建立的阈值水平。 有利地，本发明的实施例通过使用数据成员来建立比较阈值水平来确定其预期值来减少数据编码开销。
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公开(公告)号：US5920536A
公开(公告)日：1999-07-06
申请号：US102515
申请日：1998-06-22
IPC分类号： G03H1/26 , G11B7/0065 , G11C7/00 , G11C13/04 , G11B7/00
CPC分类号： G11B7/0065 , G11C13/042 , G11C7/005
摘要： Feedback is employed in a holographic memory system to facilitate rapid access to information in a stored data page. This feedback technique provides compensation for thermal, optical and/or mechanical variations in the system components that tend to interrupt the projection of a data page image on a sensor array. A page indicator or mark is stored in a holographic storage medium with a page of data such that, during playback, a quality, e.g., intensity, of its projected image is indicative of the quality of the corresponding projected data page image. A corresponding page indicator sensor is employed with the associated sensor array to detect the quality of a projected page indicator image. The projected data page image can then be read by sensor elements of the detector based on the detected quality of the page indicator image. Such a detector can be implemented in an active pixel sensor (APS) array with the page indicator sensor being implemented as a region of the APS array. Registration of the sensor array elements with respect to projected data pixels of the data page image can also be aligned to an absolute or substantially nearest pixel alignment by a similar feedback technique.
摘要翻译： 在全息存储器系统中采用反馈以便于快速访问存储的数据页面中的信息。 该反馈技术为系统组件中的热，光学和/或机械变化提供了补偿，这些变化倾向于中断传感器阵列上的数据页图像的投影。 页面指示符或标记被存储在具有一页数据的全息存储介质中，使得在回放期间，其投影图像的质量（例如强度）表示对应的投影数据页图像的质量。 与相关联的传感器阵列一起使用相应的页面指示器传感器来检测投影页面指示图像的质量。 然后可以基于检测到的页面指示符图像的质量，由检测器的传感器元件读取投影的数据页面图像。 这种检测器可以在有源像素传感器（APS）阵列中实现，页面指示器传感器被实现为APS阵列的区域。 相对于数据页图像的投影数据像素的传感器阵列元件的登记也可以通过类似的反馈技术对准到绝对或基本上最近的像素对准。
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4.发明授权System and method for steering focal plane data to access data locations in a holographic memory 失效用于转向焦平面数据以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US6061154A
公开(公告)日：2000-05-09
申请号：US881540
申请日：1997-06-24
CPC分类号： G11B7/0065 , G11C13/042 , G11B7/135
摘要： Systems and methods for steering a complex, spatially-modulated incident beam of coherent light to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) a reflective element, locatable proximate a first focal plane of the incident beam, (2) a rotational steering mechanism, coupled to the reflective element, that orients the reflective element according to a desired rotational angle to steer the incident beam in a desired direction and (3) a refractive element that refracts the beam reflected from the reflective element to create a second focal plane for the beam, the HMC locatable proximate the second focal plane to receive the beam at a location thereon that is a function of the desired direction.
摘要翻译： 用于控制相干光的复杂的空间调制入射光束以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 其中一个系统包括：（1）可接近入射光束的第一焦平面定位的反射元件，（2）耦合到反射元件的旋转转向机构，其将反射元件根据期望的旋转角度定向到 使所述入射光束沿所需方向转向，并且（3）折射元件，其折射从所述反射元件反射的光束以产生所述光束的第二焦平面，所述HMC可邻近所述第二焦平面定位，以在其上的位置处接收所述光束 这是所需方向的函数。
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5.发明授权System and method for steering Fresnel region data using cylindrical coordinates to access data locations in a holographic memory 失效使用圆柱坐标转向菲涅尔区域数据以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US5973806A
公开(公告)日：1999-10-26
申请号：US206873
申请日：1998-12-08
CPC分类号： G11B7/1362 , G11B7/0065
摘要： Systems and methods for steering an optical path to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) first and second reflective elements locatable to receive and reflect a complex, spatially-modulated incident beam of light, (2) a reflective element steering mechanism, coupled to the first and second reflective elements, that moves the first and second reflective elements to steer the incident beam in a desired direction and (3) an HMC rotating mechanism, couplable to the HMC, that rotates the HMC about an axis thereof, the reflective element steering mechanism and the HMC rotating mechanism cooperating to cause the incident beam to illuminate a location on a plane of the HMC that is a function of a movement of the first and second reflective elements and a rotational position of the HMC.
摘要翻译： 用于转向光路以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 系统中的一个包括：（1）可定位成接收和反射复杂的空间调制的入射光束的第一和第二反射元件，（2）联接到第一和第二反射元件的反射元件转向机构，其移动 所述第一和第二反射元件用于沿着所需方向转向所述入射光束;以及（3）HMC旋转机构，其联接到所述HMC上，所述旋转机构使所述HMC绕其轴线旋转，所述反射元件转向机构和所述HMC旋转机构协作到 使得入射光束照亮HMC的平面上的位置，该位置是第一和第二反射元件的运动和HMC的旋转位置的函数。
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6.发明授权System and method for steering fresnel region data to access data locations in a holographic memory 失效用于操纵菲涅尔区域数据以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US5859808A
公开(公告)日：1999-01-12
申请号：US881736
申请日：1997-06-24
CPC分类号： G11B7/0065 , G03H1/26
摘要： Systems and methods for steering an optical path to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) a refractive element that receives a complex, spatially-modulated incident beam of light, (2) first and second reflective elements locatable to receive and reflect the incident beam in a Fresnel region thereof and (3) a reflective element steering mechanism, coupled to the first and second reflective elements, that moves the first and second reflective elements in tandem to steer the incident beam with respect to the HMC thereby to cause the incident beam to illuminate a location on the HMC that is a function of a movement of the first and second reflective elements.
摘要翻译： 用于转向光路以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 系统中的一个包括：（1）接收复杂的空间调制的入射光束的折射元件，（2）可定位成在菲涅尔区域中接收和反射入射光束的第一和第二反射元件，以及（3） 耦合到第一和第二反射元件的反射元件转向机构，其串联移动第一和第二反射元件以相对于HMC引导入射光束，从而使入射光束照亮HMC上的位置， 第一和第二反射元件的运动的功能。
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7.发明授权System and method using linear translation to access data locations in a holographic memory 失效使用线性平移来访问全息存储器中的数据位置的系统和方法
公开(公告)号：US5844701A
公开(公告)日：1998-12-01
申请号：US881579
申请日：1997-06-24
CPC分类号： G11B7/085 , G11B7/0065
摘要： Systems and methods for steering a complex, spatially-modulated incident beam of light from a spatial light modulator to gain access to data locations in a holographic memory cell (HMC). One of the systems includes (1) a primary beam steering system that receives the incident beam of light from the spatial light modulator and produces a resulting beam of light, wherein the primary beam steering system traverses the resulting beam of light across a plane of the HMC in increments having a first magnitude and 2) a fine-control translation mechanism, coupled to the spatial light modulator, that translates the spatial light modulator relative to the primary beam steering system to cause the resulting beam of light to traverse the plane of the HMC in increments having a second magnitude smaller than the first magnitude.
摘要翻译： 用于控制来自空间光调制器的复杂的空间调制的入射光束以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 一个系统包括：（1）主波束转向系统，其接收来自空间光调制器的入射光束并产生所得到的光束，其中主光束转向系统穿过所得到的光束跨越 具有第一幅度的增量的HMC和2）耦合到空间光调制器的精细控制平移机构，其相对于主光束转向系统转换空间光调制器，以使得到的光束横穿该平面 HMC的增量具有小于第一幅度的第二幅度。
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8.发明授权
公开(公告)号：US5838469A
公开(公告)日：1998-11-17
申请号：US777155
申请日：1996-12-26
CPC分类号： G11C7/005 , G11C7/1006
摘要： Embodiments of the invention include a data receiving apparatus and method of a holographic or other page-wise memory system for processing information read from the memory system's storage medium. The data apparatus includes a multi-dimensional array of pixel elements comprised of pixel detectors and corresponding pixel circuit. The pixel detectors detect information such as light information representing data stored in the memory system. The pixel circuits determine a value representative of the information detected by the individual pixel detectors. Additionally, the apparatus includes active processing circuitry advantageously fabricated in conjunction with the pixel circuits to provide additional "on-chip" processing capabilities, including analog inter-pixel processing. The advantageous arrangement of the additional processing improves processing times, reduces the unprocessed data flow out of the apparatus, and reduces circuitry design space and cost.
摘要翻译： 本发明的实施例包括用于处理从存储器系统的存储介质读取的信息的全息或其他逐页存储器系统的数据接收装置和方法。 数据装置包括由像素检测器和对应的像素电路组成的像素元件的多维阵列。 像素检测器检测诸如表示存储在存储器系统中的数据的光信息的信息。 像素电路确定表示由各个像素检测器检测的信息的值。 此外，该设备包括有利地与像素电路相结合地制造的有源处理电路，以提供额外的“片上”处理能力，包括模拟像素间处理。 附加处理的有利布置改善了处理时间，减少了未处理的数据流出装置，并且减少了电路设计空间和成本。
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9.发明授权System and method for steering focal plane data using cylindrical coordinates to access data locations in a holographic memory 失效使用圆柱坐标转向焦平面数据以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US5835470A
公开(公告)日：1998-11-10
申请号：US881572
申请日：1997-06-24
CPC分类号： G11B7/08576 , G11B7/0065
摘要： Systems and methods for steering a complex, spatially-modulated incident beam of coherent light to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) a reflective element, locatable proximate a first focal plane of the incident beam, (2) a rotational steering mechanism, coupled to the reflective element, that orients the reflective element according to a desired rotational angle to steer the incident beam in a desired direction and (3) a refractive element that refracts the beam reflected from the reflective element to create a second focal plane for the beam, the HMC locatable proximate the second focal plane and rotatable about an axis of a plane thereof to receive the beam at a location thereon that is a function of the desired direction and an angular position of the HMC.
摘要翻译： 用于控制相干光的复杂的空间调制入射光束以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 其中一个系统包括：（1）可接近入射光束的第一焦平面定位的反射元件，（2）耦合到反射元件的旋转转向机构，其将反射元件根据期望的旋转角度定向到 引导所述入射光束在所需方向上并且（3）折射元件，其折射从所述反射元件反射的光束以产生用于所述光束的第二焦平面，所述HMC可邻近所述第二焦平面定位并可围绕平面的轴线旋转 以在其上的位置处接收作为所述HMC的期望方向和角度位置的函数的位置。
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10.发明授权Apparatus and method for phase-encoding off-axis spatial light modulators within holographic data systems 失效在全息数据系统内相位编码离轴空间光调制器的装置和方法
公开(公告)号：US6018402A
公开(公告)日：2000-01-25
申请号：US47050
申请日：1998-03-24
CPC分类号： G11C13/042 , G02B5/32 , G03H1/28 , G03H2001/2675
摘要： Embodiments of the invention include an off-axis amplitude and phase encoding optical system, apparatus and method of storage in which a holographic optical element (HOE) is used advantageously to reconstruct optical elements typically used to phaseencode an object beam emanating from a spatial light modulator (SLM). The optical system includes a spatial light modulator (SLM) such as a digital micro-mirror device (DMD), a data storage device such as a holographic memory cell (HMC), and the holographic optical element (HOE) for duplicating the phase-encoding functions typically performed on an object beam emanating from the SLM prior to alignment with the holographic memory cell (HMC). Conventionally, a phase mask along with one or more optical elements comprising a four-F lens system typically are needed to phase encode the amplitude-encoded light pattern that propagates from the SLM. According to embodiments of the invention, a holographic optical element (HOE) replaces the phase mask and other optical elements and performs the necessary phase encoding on the amplitude-encoded beam prior to the beam being aligned with the holographic memory cell (HMC) for storage therein. Once generated, the holographic optical element (HOE) replaces the complicated phase mask and conventional four-F lens system arrangement typically used to phase-encode an amplitude-encoded object beam emanating from the spatial light modulator (SLM) of the off-axis amplitude and phase encoding optical system.
摘要翻译： 本发明的实施例包括离轴振幅和相位编码光学系统，存储装置和方法，其中全息光学元件（HOE）有利地用于重建通常用于对从空间光调制器发出的物体光束进行逐步编码的光学元件 （SLM）。 光学系统包括诸如数字微镜装置（DMD）的空间光调制器（SLM），诸如全息存储单元（HMC）的数据存储装置和用于复制相位信息的全息光学元件（HOE） 编码功能通常在与全息存储单元（HMC）对准之前在从SLM发出的对象光束上执行。 通常，通常需要相位掩模以及包含四-F透镜系统的一个或多个光学元件来相位编码从SLM传播的幅度编码光图案。 根据本发明的实施例，全息光学元件（HOE）替代相位掩模和其它光学元件，并且在光束与全息存储单元（HMC）对齐以用于存储之前对幅度编码的光束执行必要的相位编码 其中。 一旦生成，全息光学元件（HOE）代替复杂的相位掩模和常规的四-F透镜系统布置，其通常用于对从离轴振幅的空间光调制器（SLM）发出的幅度编码对象光束进行相位编码 和相位编码光学系统。
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