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    • 31. 发明申请
    • MULTIPLE LAYER OPTICAL DISC, AND DEVICE FOR WRITING SUCH DISC
    • 多层光盘,以及用于写盘的设备
    • US20140050066A1
    • 2014-02-20
    • US14061863
    • 2013-10-24
    • KONINKLIJKE PHILIPS N.S.
    • Robert A. Brondijk
    • G11B7/0045
    • G06F3/0608G06F3/0644G06F3/0677G11B7/0045G11B7/24035G11B27/3027G11B27/329G11B2220/218G11B2220/235G11B2220/2562
    • A data storage system (1) comprises:an optical disc (2) having a physical storage space (3) comprising two layers (L0; L1) of physical storage locations, the physical storage space comprising a logical storage space (LSS) which contains storage locations within a first layer (L0) and within a second layer (L1), the storage locations in said logical storage space having contiguously numbered logical addresses (LA);a disc drive (10) capable of writing information in the logical storage space of said optical disc;the disc drive having an address limit memory (12), containing at least a value for a parameter LAmax indicating the maximum value of said logical addresses of the storage locations (4) in said first storage layer (L0);the disc drive (10) being capable of changing the value in said address limit memory (12); anda host device (20), capable of cooperating with said disc drive (10).
    • 一种数据存储系统(1)包括:具有物理存储空间(3)的光盘(2),所述物理存储空间(3)包括物理存储位置的两层(L0; L1),所述物理存储空间包括逻辑存储空间(LSS) 在第一层(L0)内和第二层(L1)内的存储位置,所述逻辑存储空间中的存储位置具有连续编号的逻辑地址(LA); 能够在所述光盘的逻辑存储空间中写入信息的盘驱动器(10); 所述盘驱动器具有地址限制存储器(12),其至少包含指示所述第一存储层(L0)中的所述存储位置(4)的所述逻辑地址的最大值的参数LAmax的值; 所述盘驱动器(10)能够改变所述地址限制存储器(12)中的值; 以及能够与所述盘驱动器(10)配合的主机设备(20)。
    • 32. 发明授权
    • Method applying a pulsed laser beam for reading of an optical disc and respective apparatus
    • 施加用于读取光盘的脉冲激光束和相应装置的方法
    • US08611196B2
    • 2013-12-17
    • US13697158
    • 2011-05-09
    • Gael PilardLarisa Von Riewel
    • Gael PilardLarisa Von Riewel
    • G11B7/24G11B7/0045
    • G11B7/005
    • Method for reading data from an optical disc comprising a substrate layer, a read-only data layer, and a nonlinear layer with a super-resolution structure disposed on the data layer, the read-only data layer including diffractive pits and lands having a length larger than the diffraction limit of the pickup and super-resolution pits and lands having a length smaller than the diffraction limit of the pickup, the method comprising the steps of using a pickup including a laser for providing a HF signal for retrieving of the data of the data layer, providing a constant laser power for retrieving of the data, and pulsing the laser at the end of a diffractive pit or land. The Apparatus comprises a pickup with a laser and a comparator responsive to a threshold level and to the HF signal, for providing a trigger signal for pulsing of the laser.
    • 一种用于从包括基底层,只读数据层和设置在数据层上的超分辨率结构的非线性层的光盘读取数据的方法,所述只读数据层包括衍射凹坑和具有长度 大于拾取器的衍射极限和具有小于拾取器的衍射极限的长度的超分辨率凹坑和平台,该方法包括以下步骤:使用包括激光器的拾取器,用于提供用于检索的数据的HF信号 数据层,提供用于检索数据的恒定的激光功率,以及在衍射坑或地面的末端脉冲激光。 该装置包括具有激光器的拾取器和响应于阈值电平的比较器和HF信号,用于提供用于脉冲激光的触发信号。
    • 34. 发明申请
    • WRITE POWER ADJUSTMENT METHOD AND INFORMATION RECORDING METHOD
    • 写功率调整方法和信息记录方法
    • US20130235711A1
    • 2013-09-12
    • US13871293
    • 2013-04-26
    • HITACHI CONSUMER ELECTRONICS CO., LTD.
    • Soichiro ETOKoichi WatanabeHarukazu Miyamoto
    • G11B7/0045
    • G11B7/0045G11B7/1267G11B7/24038G11B2007/0013
    • In write power adjustment for an optical disc having a plurality of information storage layers, data of trial writing is varied by the influence of layers other than a target layer. It is difficult, therefore, to determine optimal write power. A modulation M[m] is obtained from a reproduction signal amplitude of a signal subjected to the trial writing performed with use of write powers Pw[m] (m being an integer) of a plurality of kinds. At least an optimum write power intercept Pint_opt is determined by fitting a relation between the Pw[m] and the M[m] by a modulation characteristic formula M=Masy×(1−(Pint−Pasy)/(Pw−Pasy)) having an asymptotic modulation Masy, a write power intercept Pint, and an asymptotic write power Pasy as parameters. Approximation accuracy by the fitting and/or quality of the trial writing signal are evaluated with use of at least the M[m], the modulation characteristic formula, and the Pint_opt. An optimum write power Pw_opt is calculated by performing a specified operation at least with use of the Pint_opt.
    • 在具有多个信息存储层的光盘的写入功率调整中,试写的数据由目标层以外的层的影响而变化。 因此,很难确定最佳写入功率。 通过使用多种写入功率Pw [m](m为整数)进行试写的信号的再现信号振幅,获得调制M [m]。 通过用调制特性公式M = Masy×(1-(Pint-Pasy)/(Pw-Pasy))拟合Pw [m]和M [m]之间的关系来确定至少最佳写功率截止Pint_opt 具有渐近调制Masy,写功率截取Pint,渐近写功率Pasy作为参数。 通过使用至少M [m],调制特性公式和Pint_opt来评估试写信号的拟合和/或质量的近似精度。 至少通过使用Pint_opt执行指定的操作来计算最佳写入功率Pw_opt。
    • 35. 发明申请
    • LIGHT SOURCE AND RECORDING APPARATUS
    • 光源和记录装置
    • US20130235710A1
    • 2013-09-12
    • US13774657
    • 2013-02-22
    • SONY CORPORATION
    • Tsutomu MaruyamaGoro Fujita
    • H01S5/00G11B7/0045
    • H01S5/0085G11B7/0045G11B7/127H01S5/0028H01S5/0602H01S5/06246H01S5/0657H01S5/141H01S5/22H01S5/4006
    • There is provided a light source including a mode-lock laser unit that includes a semiconductor laser and an external resonator unit and emits a laser beam having a predetermined frequency, the semiconductor laser including a saturable absorber unit that applies a reverse bias voltage and a gain unit that applies a gain current, a semiconductor optical amplifier that performs amplification modulation on the laser beam emitted from the mode-lock laser unit, a laser clock generating unit that generates a laser clock synchronized with the laser beam based on a signal detected from the saturable absorber unit when the laser beam oscillates in the mode-lock laser unit, and a modulating unit that generates a driving current synchronized with the laser clock and applies the driving current to the semiconductor optical amplifier.
    • 提供了一种光源,其包括模式锁定激光器单元,其包括半导体激光器和外部谐振器单元,并且发射具有预定频率的激光束,所述半导体激光器包括可饱和吸收器单元,其施加反向偏置电压和增益 单元,其施加增益电流;半导体光放大器,对从所述模式锁定激光器单元发射的激光束进行放大调制;激光器时钟产生单元,其基于从所述激光束检测到的信号产生与所述激光束同步的激光时钟; 激光束在模式锁定激光单元中振荡的可饱和吸收体单元,以及产生与激光时钟同步的驱动电流并向半导体光放大器施加驱动电流的调制单元。