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1. 发明授权

US5978335A Integrated calibration apparatus for a multi-mode information storage system 失效
标题翻译：用于多模式信息存储系统的集成校准装置
公开(公告)号：US5978335A
公开(公告)日：1999-11-02
申请号：US672862
申请日：1996-06-28
申请人： Alan Robert Clark , Robert Allen Hutchins , Glen Alan Jaquette
发明人： Alan Robert Clark , Robert Allen Hutchins , Glen Alan Jaquette
IPC分类号： G01M11/00 , G11B7/00 , G11B7/0037 , G11B7/004 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/125 , G11B11/10 , G11B11/105 , G11B20/10 , G11B20/18 , G11B27/36
CPC分类号： G11B7/126 , G11B11/10595 , G11B20/1879 , G11B27/36 , G11B7/0045 , G11B7/0037
摘要： An integrated calibration apparatus operates in multiple calibration modes of a multi-mode information storage system such as an optical disk drive to calibrate the drive in the multiple write modes. An event processing and measurement circuit is configurable in multiple configurations that each correspond to a different calibration measurement. Each configuration concurrently measures one or more parameters of readback data written to an optical disk by the optical disk drive operating in a particular write mode. A qualification circuit selects valid measurements for two different parameters or for two different qualification of the same parameter. A summation circuit sums valid measurements of each parameter measured and counts the number of measurements summed for each parameter. The calibration apparatus calculates average values for the measured parameters from the sums and counts, and then calibrates the multi-mode optical disk drive for its current write mode based on the average values.
摘要翻译：集成校准装置在诸如光盘驱动器的多模式信息存储系统的多个校准模式中操作，以校准多个写入模式中的驱动器。事件处理和测量电路可配置为多个配置，每个配置对应于不同的校准测量。每个配置同时测量由特定写入模式操作的光盘驱动器写入光盘的回读数据的一个或多个参数。鉴定电路为两个不同的参数或相同参数的两个不同资格选择有效的测量。求和电路对所测量的每个参数的有效测量进行求和，并对每个参数求和的测量次数进行计数。校准装置根据总和和计数计算测量参数的平均值，然后基于平均值校准多模光盘驱动器的当前写入模式。

2. 发明授权

US5825744A Configurable read detection channel and method for decoding data stored within a data storage medium 失效
标题翻译：用于对存储在数据存储介质中的数据进行解码的可配置读取检测通道和方法
公开(公告)号：US5825744A
公开(公告)日：1998-10-20
申请号：US647490
申请日：1996-05-13
申请人： Robert Allen Hutchins , Glen Alan Jaquette , Alan Robert Clark
发明人： Robert Allen Hutchins , Glen Alan Jaquette , Alan Robert Clark
IPC分类号： G11B20/14 , G11B7/005 , G11B19/12 , G11B20/18 , G11B7/00
CPC分类号： G11B19/12 , G11B7/005
摘要： In a first embodiment, a read detection channel includes a tracking threshold circuit for generating a variable threshold signal and a detection circuit, which is configurable in a number of diverse configurations that each correspond to one of the multiple diverse data formats. In addition, the first embodiment of the read detection channel includes a configuration circuit that automatically selects one of the configurations of the data detection circuit in response to a detection of a format of the input data stream. The first embodiment of the read detection channel permits data bits encoded in multiple diverse data formats to be decoded utilizing a single configurable read detection channel. In a second embodiment, the configurable read detection channel includes a tracking threshold circuit that can be configured to generate a threshold output signal in response to an input signal or in response to the input signal and a phase error signal. The second embodiment of the read detection channel further includes a detection circuit, which indicates data bits detected within the input signal in response to the threshold output signal, and at least one phase-locked loop coupled to the detection circuit, which places each detected data bit within one of a plurality of bit cells within an output data stream. The phase-locked loop also generates a phase error signal that can be selectively coupled to the tracking threshold circuit.
摘要翻译：在第一实施例中，读取检测通道包括用于产生可变阈值信号的跟踪阈值电路和检测电路，其可配置为多个不同配置，每个配置各自对应于多种不同数据格式之一。此外，读取检测通道的第一实施例包括配置电路，其响应于检测到输入数据流的格式而自动选择数据检测电路的配置之一。读取检测通道的第一实施例允许使用单个可配置读取检测通道对以多种不同数据格式编码的数据位进行解码。在第二实施例中，可配置读检测通道包括跟踪阈值电路，其可被配置为响应于输入信号或响应于输入信号和相位误差信号而产生阈值输出信号。读取检测通道的第二实施例还包括检测电路，其响应于阈值输出信号指示在输入信号内检测到的数据位，以及耦合到检测电路的至少一个锁相环，其将每个检测到的数据位在输出数据流内的多个位单元之一内。锁相环还产生可以选择性地耦合到跟踪阈值电路的相位误差信号。

3. 发明授权

US5802031A Programmable PPM/PWM writing system for optical disk 失效
标题翻译：光盘可编程PPM / PWM写入系统
公开(公告)号：US5802031A
公开(公告)日：1998-09-01
申请号：US972467
申请日：1997-11-18
申请人： Alan Robert Clark , Robert Allen Hutchins
发明人： Alan Robert Clark , Robert Allen Hutchins
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/125
CPC分类号： G11B7/126 , G11B7/0045
摘要： A programmable writing system for an optical disk drive which is adaptable for pulse position modulation (PPM) and pulse width modulation (PWM) pulse generation. The writing circuit is responsive to a PPM/PWM mode command for generating programmed laser pulse signals. Specifically, a pattern detector is responsive to the PPM/PWM mode command for detecting input data. The detected data is provided to a pulse selector for selecting programmed pulse power and/or duration values, which operate a pulse generator to set pulse power levels and/or to set the duration of the generated laser pulse signals. In PWM mode, the pattern detector provides a toggle signal with each detected signal and the pulse selector responds to the toggle signal to alternate between providing mark pulse power and/or duration values and providing space duration values to thereby provide alternating mark and space signals.
摘要翻译：一种适用于脉冲位置调制（PPM）和脉冲宽度调制（PWM）脉冲生成的光盘驱动器的可编程写入系统。写入电路响应于用于产生编程的激光脉冲信号的PPM / PWM模式命令。具体地，图案检测器响应于用于检测输入数据的PPM / PWM模式命令。所检测的数据被提供给脉冲选择器，用于选择编程的脉冲功率和/或持续时间值，其操作脉冲发生器以设置脉冲功率电平和/或设置所产生的激光脉冲信号的持续时间。在PWM模式中，模式检测器提供与每个检测到的信号的触发信号，并且脉冲选择器响应于触发信号以在提供标记脉冲功率和/或持续时间值之间交替，并提供空间持续时间值，从而提供交替的标记和空间信号。

4. 发明授权

US5680383A Data-transition threshold following in optical recording 失效
标题翻译：光学记录中的数据转换阈值
公开(公告)号：US5680383A
公开(公告)日：1997-10-21
申请号：US726307
申请日：1996-10-02
申请人： Alan Robert Clark , Robert Allen Hutchins , Glen Alan Jaquette , Ara Sarkis Patapoutian , Pantas Sutardja
发明人： Alan Robert Clark , Robert Allen Hutchins , Glen Alan Jaquette , Ara Sarkis Patapoutian , Pantas Sutardja
IPC分类号： G11B7/0037 , G11B20/10 , G11B7/00
CPC分类号： G11B20/10203 , G11B20/10037 , G11B7/00375
摘要： In a pulse width modulated read signal channel for an optical disk drive, a data-transition threshold is maintained for data detection by a threshold tracking circuit that estimates the amplitude centerline data-transition threshold from the most recent maximum and minimum values of the read signal waveform. To improve the accuracy of the response of the centerline estimator, the threshold is increased or decreased based on the phase error at each read signal transition through the data-transition threshold. In addition, defects in the optical recording media are detected, and a defect present signal is used to inhibit the transition phase error input to the centerline estimator. This prevents the estimator from moving the threshold to an incorrect stable level. In addition, the defect present signal boosts the error feedback in the centerline estimator. The estimator then more quickly follows the read signal waveform. As a result, the estimator reacquires the centerline of the waveform after the read head moves past the defect without retriggering the defect detection circuit.
摘要翻译：在用于光盘驱动器的脉冲宽度调制读信号通道中，保持数据转换阈值，以便阈值跟踪电路进行数据检测，该阈值跟踪电路根据读取信号的最新最大值和最小值估计幅度中心线数据转换阈值波形为了提高中心线估计器的响应精度，基于每个读取信号通过数据转换阈值转换的相位误差来增大或减小阈值。此外，检测光记录介质中的缺陷，并且使用缺陷存在信号来抑制输入到中心线估计器的过渡相位误差。这样可以防止估计器将阈值移动到不正确的稳定水平。此外，缺陷存在信号提高了中心线估计器中的误差反馈。然后，估计器更快地跟随读信号波形。因此，在读取头移动超过缺陷而不重新触发缺陷检测电路之后，估计器重新获取波形的中心线。

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