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1. 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。

2. 发明申请

WO9725709A3 Optical disk reader 审中-公开
标题翻译：光盘阅读器
公开(公告)号：WO9725709A3
公开(公告)日：1997-09-18
申请号：PCT/US9700290
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： JOHNSON BRUCE V , MCDERMOTT GREGORY A , O'NEILL MICHAEL P , PIETRZYK CEZARY , SPIELMAN STEVEN R , WONG TERRENCE L
IPC分类号： G11B7/005 , G11B20/10 , G11B20/14 , G11B27/10 , G11B27/30 , G11B27/36 , G11B7/00
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。

3. 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。

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