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1. 发明申请

WO2003050803A3 WRITE COMPENSATION FOR DATA STORAGE AND COMMUNICATION SYSTEMS 审中-公开
公开(公告)号：WO2003050803A3
公开(公告)日：2003-06-19
申请号：PCT/US2002/035725
申请日：2002-11-06
申请人： CALIMETRICS, INC.
发明人： POWELSON, Judith, C. , WARLAND, David, K. , HARVEY, Ian, E. , LO, Yung-Cheng , PEPIN, Christine , SPIELMAN, Steven, R. , ZHOU, Ting , ZINGMAN, Johnathan, A.
IPC分类号： G11B7/0045
摘要： Methods and systems for write compensation for optimizing the performance of a data storage or communication channel are disclosed. In one embodiment, a method comprises determining channel sensitivity to modifications in write signal parameters, detecting systematic errors in a read signal recovered from data written with a first set of write parameters, and adjusting the write signal parameters by an amount determined from the channel sensitivity such that the systematic errors are reduced when data are written with the adjusted write parameters.

2. 发明申请

WO0158102A9 DC CONTROL OF A MULTILEVEL SIGNAL 审中-公开
标题翻译：多信号直流控制
公开(公告)号：WO0158102A9
公开(公告)日：2002-10-31
申请号：PCT/US0100771
申请日：2001-01-09
申请人： CALIMETRICS INC
发明人： LEE DAVID C , FAN JOHN L , LO YUNG-CHEN
IPC分类号： G11B7/0045 , G11B7/013 , G11B20/10 , G11B20/14 , G11B20/18 , H03M13/09 , H04L25/34 , H04L25/49 , H03M5/00 , H03M7/00
CPC分类号： H04L25/4919 , G11B7/0045 , G11B7/013 , G11B20/10 , G11B20/1496 , G11B20/18 , G11B2020/1457 , H03M13/09
摘要： A system and method are disclosed for writing a multilevel data sequence to a storage medium so that a read signal generated by reading the multilevel data sequence from the storage medium will have reduced low frequency content is described. The method includes evaluating the effect of a plurality of candidate merge symbols on an RDS of the read signal (504). A preferred merge symbol is selected from among the plurality of candidate merge symbols based on the effect of the preferred merge symbol on an RDS of the read signal (505). The preferred merge symbol is added to the multilevel data sequence so that the RDS of the read signal is controlled (508).
摘要翻译：公开了一种用于将多级数据序列写入存储介质的系统和方法，以便通过从存储介质读取多级数据序列而产生的读取信号将具有降低的低频内容。该方法包括评估多个候选合并符号对读取信号的RDS的影响（504）。基于优选合并符号对读取信号的RDS的影响，从多个候选合并符号中选择优选的合并符号（505）。优选的合并符号被添加到多级数据序列，使得读取信号的RDS被控制（508）。

3. 发明申请

WO0157856A9 WRITE COMPENSATION FOR A MULTI-LEVEL DATA STORAGE SYSTEM 审中-公开
标题翻译：多级数据存储系统的写补偿
公开(公告)号：WO0157856A9
公开(公告)日：2002-07-18
申请号：PCT/US0033559
申请日：2000-12-11
申请人： CALIMETRICS INC
发明人： POWELSON JUDITH C , WARLAND DAVID K
IPC分类号： G11B7/125 , G11B7/14 , G11B20/10 , G11B5/09
CPC分类号： G11B7/126 , G11B7/14 , G11B20/10009
摘要： A system and method are disclosed for compensating during a data writing process for a transformation of input data by an optical disc data storage channel. A write strategy matrix (416) is derived that maps a plurality of input sequences (412) to a plurality of write strategy parameters. The input sequences (412) each include a plurality of input data elements. When an input sequence is received, the write strategy matrix (416) is used to determine a selected write strategy parameter that corresponds to the input sequence.
摘要翻译：公开了用于在由光盘数据存储通道转换输入数据的数据写入处理期间进行补偿的系统和方法。导出将多个输入序列（412）映射到多个写策略参数的写策略矩阵（416）。输入序列（412）各自包括多个输入数据元素。当接收到输入序列时，写策略矩阵（416）用于确定与输入序列相对应的所选择的写策略参数。

4. 发明申请

WO0111841A8 sODING SYSTEM AND METHOD FOR PARTIAL RESPONSE CHANNELS 审中-公开
标题翻译：部分响应通道的编码系统和方法
公开(公告)号：WO0111841A8
公开(公告)日：2001-07-05
申请号：PCT/US0020155
申请日：2000-07-24
申请人： CALIMETRICS INC
发明人： MCLAUGHLIN STEVE W , LEE DAVID C , ZINGMAN JONATHAN A , FAN JOHN L
IPC分类号： H04L1/00 , H04L25/497 , H04L23/02 , H04L27/06
CPC分类号： H04L1/0059 , H04L25/497
摘要： A system and method for reading data to and writing data from multi-level (M-ary) partial response channels uses a trellis coder (414) to encode an input bit stream sequence into a stream of multi-level data symbols. The data symbols are written to the partial response channel (412) using any of a number of techniques (406). Preferably, the trellis coder anticipates the modulation transfer function of the partial response channel in encoding the data. Because the partial response channel has its own transfer function, the relationship between the data read from the channel and the actual input data bits is a function not only of the data encoder but also of the partial response channel. Therefore, a decoder specification used to implement the decoder takes into account the effect of the trellis encoder as well as the effect of the partial response channel.
摘要翻译：用于从多级（M-ary）部分响应信道读取和写入数据的系统和方法使用网格编码器（414）将输入比特流序列编码成多级数据符号流。使用多种技术（406）将数据符号写入部分响应信道（412）。优选地，网格编码器在编码数据时预期部分响应信道的调制传递函数。由于部分响应信道具有其自身的传递函数，所以从信道读取的数据与实际输入数据位之间的关系不仅是数据编码器而且部分响应信道的功能。因此，用于实现解码器的解码器规范考虑了网格编码器的效果以及部分响应信道的影响。

5. 发明申请

WO0049603A9 METHOD AND APPARATUS FOR READING AND WRITING A MULTILEVEL SIGNAL FROM AN OPTICAL DISC 审中-公开
标题翻译：用于从光盘读取和写入多个信号的方法和装置
公开(公告)号：WO0049603A9
公开(公告)日：2001-09-27
申请号：PCT/US0003271
申请日：2000-02-08
申请人： CALIMETRICS INC
发明人： WONG TERRY , ZINGMAN JONATHAN A , SPIELMAN STEVEN R , FAN JOHN L , LING YI , LO YUNG-CHEN , MCLAUGHLIN STEVE W , POWELSON JUDITH C , WARLAND DAVID K , MCPHETERS LAURA L , LEE DAVID C , MARTIN RICHARD L
IPC分类号： G11B7/0045 , G11B7/005 , G11B7/007 , G11B7/013 , G11B20/10 , G11B20/12 , G11B20/14 , G11B20/18 , G11B27/19 , G11B27/24 , G11B27/30 , H03M13/00 , H03M13/23 , G11B3/70 , G11B5/09 , G11B5/76 , G11B7/00
CPC分类号： G11B20/1252 , G11B7/0045 , G11B7/005 , G11B7/00745 , G11B7/013 , G11B20/10009 , G11B20/1403 , G11B20/1833 , G11B27/19 , G11B27/24 , G11B27/3027 , G11B2020/1222 , G11B2020/1268 , G11B2020/1275 , G11B2020/1287 , G11B2220/20 , G11B2220/2537 , H03M13/00 , H03M13/23
摘要： A system and method are disclosed for reading a multilevel signal from an optical disk (200). The method includes reading a raw analog data signal from a disk (200) using an optical head (204) and adjusting the amplitude of the raw analog data signal. A timing signal is recovered from the amplitude adjusted analog data signal by a signal processor (214). Correction is made for amplitude modulation of the raw analog data signal by processing the raw analog data signal and the timing signal.
摘要翻译：公开了一种用于从光盘（200）读取多电平信号的系统和方法。该方法包括使用光学头（204）从盘（200）读取原始模拟数据信号并调整原始模拟数据信号的幅度。通过信号处理器（214）从幅度调整的模拟数据信号中恢复定时信号。通过处理原始模拟数据信号和定时信号，对原始模拟数据信号的幅度调制进行校正。

6. 发明申请

WO2001057857A1 GENERATING A MULTILEVEL CALIBRATION SEQUENCE FOR PRECOMPENSATION 审中-公开
标题翻译：生成用于预测的多个校准序列
公开(公告)号：WO2001057857A1
公开(公告)日：2001-08-09
申请号：PCT/US2001/000359
申请日：2001-01-05
申请人： CALIMETRICS, INC.
发明人： LEE, David, C.
IPC分类号： G11B5/09
CPC分类号： G11B7/126 , G06F7/584 , G11B5/09 , G11B20/10009 , G11B20/10194 , G11B20/1496 , G11B2020/1457
摘要： A system and method are disclosed for generating a calibration sequence of multilevel symbols includes generating subsequences of digital values selected from a range of digital values using a maximal length shift register. The subsequences have a given subsequence length. The range of digital values is mapped onto a set of multilevel symbols and the multilevel symbols corresponding to the generated digital values are output to a write strategy processor.
摘要翻译：公开了一种用于产生多电平符号的校准序列的系统和方法，包括使用最大长度移位寄存器生成从数字值范围中选择的数字值的子序列。子序列具有给定的子序列长度。数字值的范围被映射到一组多级符号，并且对应于所生成的数字值的多级符号被输出到写策略处理器。

7. 发明申请

WO1997025709A2 OPTICAL DISK READER 审中-公开
标题翻译：光盘读取器
公开(公告)号：WO1997025709A2
公开(公告)日：1997-07-17
申请号：PCT/US1997000290
申请日：1997-01-03
申请人： CALIMETRICS, INC. , JOHNSON, Bruce, V. , MCDERMOTT, Gregory, A. , O'NEILL, Michael, P. , PIETRZYK, Cezary , SPIELMAN, Steven, R. , WONG, Terrence, L.
发明人： CALIMETRICS, INC.
IPC分类号： G11B00/00
CPC分类号： G11B20/10009 , G11B7/0052 , G11B20/1403 , G11B20/1496 , G11B27/10 , G11B27/3027 , G11B27/36
摘要： The present invention includes a method and apparatus for reading data from an optical information storage disc having an information storage track that includes a plurality of pits, each pit having the capacity to store at least three discrete data levels represented by differing intensities of radiation reflected toward a detector. The information storage track is read and an analog data signal is output which is indicative of the reflectance of the pits. The analog data signal in the vicinity of the location of a pit is sampled and converted to a data signal which is indicative of the reflectance at the location of the sampled pit. The discrete data level stored at the location of the sampled pit level is determined. There is the potential of at least three discrete data levels and each data level corresponds to an associated range of digital signal values. Thus, the data level read from each pit has the capacity to represent more than one bit of information.
摘要翻译：本发明包括一种用于从具有包括多个凹坑的信息存储轨道的光学信息存储盘读取数据的方法和装置，每个凹坑具有存储由不同的辐射强度表示的至少三个离散数据水平的能力，检测器读取信息存储轨迹，并输出指示凹坑的反射率的模拟数据信号。在凹坑位置附近的模拟数据信号被采样并转换为指示采样坑位置的反射率的数据信号。确定存储在采样坑电平位置处的离散数据电平。存在至少三个离散数据电平的潜力，并且每个数据电平对应于数字信号值的相关范围。因此，从每个凹坑读取的数据电平具有表示多于一位信息的能力。

8. 发明申请

WO2003050803A2 WRITE COMPENSATION FOR DATA STORAGE AND COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于数据存储和通信系统的写入补偿
公开(公告)号：WO2003050803A2
公开(公告)日：2003-06-19
申请号：PCT/US2002/035725
申请日：2002-11-06
申请人： CALIMETRICS, INC.
发明人： POWELSON, Judith, C. , WARLAND, David, K. , HARVEY, Ian, E. , LO, Yung-Cheng , PEPIN, Christine , SPIELMAN, Steven, R. , ZHOU, Ting , ZINGMAN, Johnathan, A.
IPC分类号： G11B7/00
CPC分类号： G11B7/126 , G11B7/0045 , G11B7/14 , G11B20/10009 , G11B20/10055 , G11B20/10194
摘要： Methods and systems for write compensation for optimizing the performance of a data storage or communication channel are disclosed. In one embodiment, a method comprises determining channel sensitivity to modifications in write signal parameters, detecting systematic errors in a read signal recovered from data written with a first set of write parameters, and adjusting the write signal parameters by an amount determined from the channel sensitivity such that the systematic errors are reduced when data are written with the adjusted write parameters.
摘要翻译：公开了用于优化数据存储或通信信道的性能的写补偿的方法和系统。在一个实施例中，一种方法包括确定对写入信号参数中的修改的信道灵敏度，检测从用第一组写入参数写入的数据中恢复的读取信号中的系统误差，以及根据信道灵敏度确定的量来调整写入信号参数使得当使用经调整的写入参数写入数据时系统误差降低。

9. 发明申请

WO0157857A9 GENERATING A MULTILEVEL CALIBRATION SEQUENCE FOR PRECOMPENSATION 审中-公开
标题翻译：生成用于预测的多个校准序列
公开(公告)号：WO0157857A9
公开(公告)日：2002-10-31
申请号：PCT/US0100359
申请日：2001-01-05
申请人： CALIMETRICS INC
发明人： LEE DAVID C
IPC分类号： G06F7/58 , G11B5/09 , G11B7/125 , G11B20/10 , G11B20/14
CPC分类号： G11B7/126 , G06F7/584 , G11B5/09 , G11B20/10009 , G11B20/10194 , G11B20/1496 , G11B2020/1457
摘要： A system and method are disclosed for generating a calibration sequence of multilevel symbols includes generating subsequences of digital values selected from a range of digital values using a maximal length shift register. The subsequences have a given subsequence length. The range of digital values is mapped onto a set of multilevel symbols and the multilevel symbols corresponding to the generated digital values are output to a write strategy processor.
摘要翻译：公开了一种用于产生多电平符号的校准序列的系统和方法，包括使用最大长度移位寄存器生成从数字值范围中选择的数字值的子序列。子序列具有给定的子序列长度。数字值的范围被映射到一组多级符号，并且对应于所生成的数字值的多级符号被输出到写策略处理器。

10. 发明申请

WO1997035304A1 APPARATUS AND METHODS FOR FORMING AND USE WITH VARIABLE PIT DEPTH OPTICAL RECORDING MEDIA 审中-公开
标题翻译：用于形成和使用可变深度光学记录介质的装置和方法
公开(公告)号：WO1997035304A1
公开(公告)日：1997-09-25
申请号：PCT/US1997004941
申请日：1997-03-24
申请人： CALIMETRICS, INC. , McDERMOTT, Gregory, A. , WONG, Terrence, L. , O'NEILL, Michael, P. , PIETRZYK, Cezary , JOHNSON, Bruce, V. , SPIELMAN, Steven, R. , SHAFAAT, Sayed, Tariq , BUSTILLO, James, M.
发明人： CALIMETRICS, INC.
IPC分类号： G11B07/007
CPC分类号： G11B20/10009 , G11B7/0052 , G11B20/1403 , G11B20/1496 , G11B27/10 , G11B27/3027 , G11B27/36
摘要： An apparatus (figure 2) and method for forming a digital optical disc master from a disc having a substrate (300) coated with a photoresist coating (320). The method includes irradiating the surface of the photoresist material (320) with a laser beam (310) at a multiplicity of pit locations over the substrate (300) causing the photoresist material (320) to react to the laser radiation (310) to form at least three different discrete levels at the multiplicity of pit locations relative to the surface of the substrate (300) due to the dose of radiation applied being calculated to react with the photoresist to a depth equivalent to the discrete levels. The exposed photoresist is then developed to achieve the pits having the different discrete levels. A further method is disclosed for equalization and compensation for intersymbol interference between adjacent pits.
摘要翻译：一种用于从具有涂覆有光致抗蚀剂涂层（320）的基板（300）的盘形成数字光盘主机的装置（图2）和方法。该方法包括在衬底（300）上的多个凹坑位置处用激光束（310）照射光致抗蚀剂材料（320）的表面，使得光致抗蚀剂材料（320）与激光辐射（310）反应以形成由于施加的辐射剂量被计算为与光致抗蚀剂反应至与离散水平相当的深度，所以相对于衬底（300）的表面在多个凹坑位置处的至少三个不同的离散水平。然后曝光的光致抗蚀剂被显影以实现具有不同离散水平的凹坑。公开了用于相邻凹坑之间的符号间干扰的均衡和补偿的另一种方法。

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