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    • 3. 发明公开
    • Servoing system for multiple spot registration for holographic replication system
    • 伺服系统zur Mehrpunktregistrierungfürein holographisches Replikationssystem
    • EP2455937A1
    • 2012-05-23
    • EP11188822.8
    • 2011-11-11
    • General Electric Company
    • Wang, XuefengBonanni, Pierino GianniShi, XiaoleiRen, ZhiyuanXia, HuaOstroverkhov, Victor PetrovichWang, Xinghua
    • G11B7/14G11B7/08
    • G11B7/14G11B7/00781G11B7/083
    • The present techniques provide methods and systems for controlling the recording of micro-holograms 68 using multiple counter-propagating light beams over multiple data tracks 12 of a holographic disk 10. Imperfections in a holographic disk 10 or movement of the disk during a recording process may cause signal beams to deviate from target data tracks. In some embodiments, a tracking beam 22 is directed to a reference layer 78 in the disk. Deviation of the reference beam 66 from a target groove in the reference layer 78 may be indicative of tracking errors. A detector may detect reflections of the tracking beam 22 and generate an error signal in response to detected tracking errors. Servo-mechanical devices 28 may actuate (e.g., radially, tangentially, or axially translate, rotate, and/or tilt) one or more optical components through which the counter-propagating light beams are emitted to compensate for tracking errors.
    • 本技术提供了用于使用多个反向传播光束在全息光盘10的多个数据轨道12上控制微全息图像68的记录的方法和系统。全息光盘10中的缺陷或记录过程中盘的移动 使信号光束偏离目标数据轨道。 在一些实施例中,跟踪光束22被引导到盘中的参考层78。 参考光束66与参考层78中的目标凹槽的偏差可以指示跟踪误差。 检测器可以检测跟踪光束22的反射并且响应于检测到的跟踪误差而产生误差信号。 伺服机械装置28可以致动(例如,径向,切向或轴向平移,旋转和/或倾斜)一个或多个光学部件,通过该光学部件发射反向传播的光束以补偿跟踪误差。
    • 6. 发明公开
    • Method and system for servo control for a microholographic storage system
    • 在einem mikroholografischen Speichersystem中的Verfahren und System zur Servosteuerung
    • EP2472514A1
    • 2012-07-04
    • EP11194550.7
    • 2011-12-20
    • General Electric Company
    • Ren, ZhiyuanShi, XiaoleiOstroverkhovVictor PetrovichWang, Xuefeng
    • G11B7/0065G11B7/08G11B7/085G11B7/095
    • G11B7/083G11B7/08523G11B7/0956G11B2007/00656
    • Methods and systems are provided for recording micro-holograms in a holographic disk 10. Disk tilting or disk imperfections may cause counter-propagating recording and reference beams to deviate from the target data position in the disk 10. In some embodiments, a tracking beam is directed to a tracking position in the disk, and deviation of the tracking beam from the tracking position may indicate tracking and/or focusing errors of the recording and/or reference beams. A detector 38 may generate an error signal in response to such errors. A first servo-mechanical system 28 may actuate a first optical head (e.g., transmitting the reference and tracking beams) to compensate for such errors, and a second servo-mechanical system 32 may actuate a second optical head (e.g., transmitting the recording beam) to follow the actuation of the first servo system, such that an interference of the reference beam and the recording beam may be maintained in the target data position.
    • 提供用于在全息光盘10中记录微全息图的方法和系统。磁盘倾斜或磁盘缺陷可能导致反向传播的记录和参考光束偏离磁盘10中的目标数据位置。在一些实施例中,跟踪光束 指向盘中的跟踪位置,并且跟踪光束与跟踪位置的偏差可以指示记录和/或参考光束的跟踪和/或聚焦误差。 检测器38可以响应于这种错误而产生误差信号。 第一伺服机械系统28可以致动第一光学头(例如,传输参考和跟踪光束)以补偿这种误差,并且第二伺服机械系统32可以致动第二光学头(例如,传送记录光束 )以跟随第一伺服系统的致动,使得参考光束和记录光束的干涉可以保持在目标数据位置。
    • 7. 发明公开
    • Coding for optical storage systems with multiple reader heads and multiple optical disks
    • 编码为具有多个读取头的光学存储系统和多个光盘的
    • EP2383738A2
    • 2011-11-02
    • EP11163434.1
    • 2011-04-21
    • General Electric Company
    • Ross, John Anderson FergusHershey, John ErikShi, XiaoleiWang, Xuefeng
    • G11B20/10G11B20/18G11B7/14
    • G11B20/10009G11B7/14G11B20/18G11B2020/1856G11B2220/2537
    • Provided are methods and systems (10, 110, 130, 152, 160, 170, 190) of encoding and decoding techniques in an optical storage system having a multi-head detector (108). In one embodiment, source data (112) may be encoded using error correction coding (e.g., turbo coding) techniques, and the encoded data (120, 126) may be interleaved and distributed to more than one detector head (106) of the multi-head detector (108). Data recorded (120, 126) in an optical disc (12) may be retrieved by the multi-head detector (108), and a read data (132, 140) from more than one detector head (108) may be concurrently decoded to retrieve estimates (138, 144) of the original information in the source data (112). Further, more than one encoder/decoder (116, 122, 136, 144) may be used, and each encoder/decoder (116, 122, 136, 144) may encode or decode data from multiple data heads (106, 108). Some embodiments also include replicating multiple discs (12).
    • 本发明提供在光学存储系统具有多头检测器(108)的编码和解码技术的方法和系统(10,110,130,152,160,170,190)。 在一个,实施例的源数据(112)可被使用的纠错编码的编码(例如,Turbo编码)技术,并且将编码数据(120,126)可以被交织并分发到所述多的多于一个的检测器头(106) -head检测器(108)。 光盘(12)的记录数据(120,126)可以由多头检测器(108),和由多于一个检测器头(108)的读取数据(132,140)中检索可同时解码,以 检索的源数据(112)的原始信息的估计(138,144)。 此外,多于一个编码器/解码器(116,122,136,144)可被使用,并且每个编码器/解码器(116,122,136,144)可以编码或从多个数据磁头(106,108)解码数据。 因此,一些实施例包括复制多个盘(12)。
    • 9. 发明公开
    • Replication and recording method for bit-wise holographic storage
    • Replikations- und Schreibverfahrenfürbitweise holographische Speicherung
    • EP2444968A1
    • 2012-04-25
    • EP11184108.6
    • 2011-10-06
    • General Electric Company
    • Ostroverkhov, Victor PetrovichBonanni, Pierino GianniShi, XiaoleiRen, ZhiyuanXia, HuaWang, XuefengWang, Xinghua
    • G11B7/08G11B7/28
    • G11B7/083G11B7/28
    • The present techniques provide methods and systems for recording micro-holograms (68) on a holographic disk (10) using a plurality of counter-propagating light beams (30, 34) in parallel. The parallel counter-propagating light beams (30, 34) overlap to form interference patterns on a data layer and over multiple data tracks (12) in the holographic disk (10). Rotating the disk (10) enables the parallel recording of micro-holograms (68) over multiple data tracks (12), thus reducing recording time. Further, the illumination pattern may include illuminated spots and non-illuminated regions, such that each illumination spot may cover a relatively small fraction of the data layer plane, possibly controlling the depth spread of the recorded micro-hologram (12). In some embodiments, data in the parallel signal beams (60) may be retrieved from a master holographic disk (46) or may be modulated (24) into the parallel signal beams (60).
    • 本技术提供了使用多个平行的反向传播光束(30,34)在全息光盘(10)上记录微全息图(68)的方法和系统。 平行的反向传播光束(30,34)重叠以在数据层上和全息光盘(10)中的多个数据轨道(12)上形成干涉图案。 旋转盘(10)能够在多个数据轨道(12)上并行记录微全息图(68),从而减少记录时间。 此外,照明图案可以包括照明点和非照明区域,使得每个照明点可以覆盖数据层平面的相对小的一部分,可能控制记录的微全息图(12)的深度扩展。 在一些实施例中,并行信号光束(60)中的数据可以从主全息光盘(46)检索,或者可以被调制(24)到并行信号光束(60)中。