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1. 发明授权

US5625615A Optical storage drive employing variable write speed for reduced laser write power 失效
标题翻译：采用可变写入速度的光存储驱动器可降低激光写入功率
公开(公告)号：US5625615A
公开(公告)日：1997-04-29
申请号：US569646
申请日：1995-12-08
申请人： James J. Dente , Blair I. Finkelstein , Marc E. Goldfeder , Michael T. Solan , Daniel J. Winarski
发明人： James J. Dente , Blair I. Finkelstein , Marc E. Goldfeder , Michael T. Solan , Daniel J. Winarski
IPC分类号： G11B7/003 , G11B7/0033 , G11B7/0037 , G11B7/0045 , G11B7/0065 , G11B19/00 , G11B19/28 , G11B7/00 , G11B15/46
CPC分类号： G11B19/28 , G11B19/00 , G11B7/0045 , G11B7/003 , G11B7/0033 , G11B7/0037 , G11B7/0065
摘要： By adjusting the advancement rate of an optical data storage medium in response to the amount of data to be written, and operating a laser with a minimum amount of write laser power level for the particular advancement rate to achieve a desired level of write effectiveness, data signals are written to the optical medium with a minimum amount of power. Where the optical medium comprises an optical disk, choosing the rate of disk rotation selectively establishes the advancement rate. Similarly, where the optical medium comprises an optical tape, choosing the rate of tape advancement from source reel to take-up reel selectively establishes the advancement rate. Preferably, the advancement rate is increased or decreased depending upon whether a greater or lesser quantity or write length of data resides in a write queue. The invention may be implemented, for example, to provide a process, apparatus or program storage medium useful for laser storage of digital data signals to an optical data storage medium with minimal power consumption.
摘要翻译：通过响应于要写入的数据量来调整光学数据存储介质的提前速率，并且对于特定的前进速率操作具有最小写入激光功率电平的激光以实现期望的写入有效性水平，数据信号以最小的功率量写入光学介质。在光介质包括光盘的情况下，选择盘旋转速率选择性地建立提前速率。类似地，在光介质包括光带的情况下，选择从源卷轴到卷取卷轴的磁带前进速率选择性地建立提前速率。优选地，根据数据的更多或更少数量或写入长度是否驻留在写入队列中来提高或减小提前速率。本发明可以实现为例如提供用于以最小功耗将数字数据信号激光存储到光学数据存储介质的过程，装置或程序存储介质。

2. 发明授权

US5555237A Contamination detection apparatus and method using write power calibration values 失效
标题翻译：污染检测装置和使用写功率校准值的方法
公开(公告)号：US5555237A
公开(公告)日：1996-09-10
申请号：US452916
申请日：1995-05-30
申请人： Bryan A. Cassels , James J. Dente , Andrew A. Gaudet , Ian E. Henderson , Daniel J. Winarski
发明人： Bryan A. Cassels , James J. Dente , Andrew A. Gaudet , Ian E. Henderson , Daniel J. Winarski
IPC分类号： G11B7/0037 , G11B7/12 , G11B7/125 , G11B20/18 , G11B7/00
CPC分类号： G11B7/126 , G11B20/1816 , G11B7/00375 , G11B7/12
摘要： A system to monitor write power calibration values in an optical drive to detect media and lens contamination, and take appropriate remedial action when contamination is found. A laser device writes data to an optical medium housed in the optical drive by imparting a laser beam upon the medium. The laser device provides the laser beam with a level of output power selected in accordance with a W/C value. A controller generates and repeatedly updates the W/C value, and provides it to the laser device. The controller samples the W/C value at selected times, and compares it to a predetermined value. If the W/C value exceeds the predetermined value, the controller executes a specific operational sequence. For example, the controller may issue a contamination warning. When the W/C value exceeds a second predetermined value, the controller may logically write-protect the optical medium, or shift the medium to another optical drive. Where the controller is implemented in an optical library with multiple optical drives, the controller may store a comprehensive list of W/C values for the drives.
摘要翻译：用于监视光驱中的写功率校准值以检测介质和镜头污染的系统，并在发现污染时采取适当的补救措施。激光装置通过在介质上施加激光束将数据写入到容纳在光驱中的光学介质上。激光装置为激光束提供根据W / C值选择的输出功率水平。控制器产生并重复更新W / C值，并将其提供给激光设备。控制器在选定的时间对W / C值进行采样，并将其与预定值进行比较。如果W / C值超过预定值，则控制器执行特定的操作顺序。例如，控制器可能发出污染警告。当W / C值超过第二预定值时，控制器可逻辑地对光介质进行写保护，或将介质转移到另一光驱。在具有多个光盘驱动器的光学库中实现控制器的情况下，控制器可以存储驱动器的W / C值的综合列表。

3. 发明授权

US5315568A Apparatus and method for accessing sectors of a rotating disk 失效
标题翻译：用于访问旋转盘的扇区的装置和方法
公开(公告)号：US5315568A
公开(公告)日：1994-05-24
申请号：US974639
申请日：1992-11-12
申请人： James J. Dente , Glen A. Jaquette , William C. Williams
发明人： James J. Dente , Glen A. Jaquette , William C. Williams
IPC分类号： G11B20/10 , G11B7/085 , G11B19/12 , G11B20/12 , G11B21/10 , G11B27/10 , G11B27/30 , G11B17/22
CPC分类号： G11B20/1258 , G11B19/12 , G11B27/105 , G11B27/3027 , G11B7/08505 , G11B2220/20
摘要： Apparatus and method are provided to increase the capacity of spiral track data storage disks while improving the reliability of access to sectors on the disk. In one embodiment, employed when logical tracks on an optical disk are grouped into concentric bands, previously unusable sectors immediately following a band boundary can be reliably accessed. In accordance with this embodiment, when the target sector is, for example, the first sector of band N and a laser beam from a read head lands on a sector in the previous band N-1, the clock governing the data transfer rate is set to the frequency of the band N-1 and a sector in that band is detected and identified. Based upon the period of sectors in the band N-1, a delay interval is computed which ends when the last sector in the band N-1 rotates past the laser beam. Sector mark detection is disabled during the delay interval and the clock frequency changed to that of band N. Sector mark detection is re-enabled at the end of the delay, the band boundary passes, and the target sector can be detected and accessed. The present invention is also applicable when the target sector is not the first sector in a band as well as when the sector on which the laser beam lands is in the same band as the target sector.
摘要翻译：提供了设备和方法，以增加螺旋轨道数据存储盘的容量，同时提高对磁盘扇区的访问的可靠性。在一个实施例中，当光盘上的逻辑磁道被分组成同心磁带时，可以可靠地访问紧跟在带边界之后的先前不可用的扇区。根据本实施例，当目标扇区例如是带N的第一扇区，并且来自读头的激光束着陆在先前频带N-1中的扇区上时，设置管理数据传输速率的时钟到频带N-1的频率，并且检测和识别该频带中的扇区。基于频带N-1中的扇区的周期，计算当频带N-1中的最后一个扇区旋转超过激光束时结束的延迟间隔。在延迟时间间隔内禁止扇区标记检测，时钟频率更改为频带N。扇区标记检测在延迟结束时被重新使能，频带边界通过，并且可以检测和访问目标扇区。当目标扇区不是频带中的第一扇区以及激光束所在的扇区与目标扇区相同的频带时，本发明也可应用。

4. 发明授权

US5233585A Acquiring focus in an optical disk system using a time and shape modified focus error signal 失效
标题翻译：使用时间和形状修改焦点错误信号在光盘系统中获取焦点
公开(公告)号：US5233585A
公开(公告)日：1993-08-03
申请号：US757796
申请日：1991-09-11
申请人： James J. Dente , Alan A. Fennema
发明人： James J. Dente , Alan A. Fennema
IPC分类号： G11B7/09 , G11B7/085
CPC分类号： G11B7/08511 , G11B7/0908
摘要： The focus acquire system on optical disk recorder as well as other optical systems, signal processes a focus error signal FES to produce a modified FES which has a peak amplitude occurring closer to a desired focus position than the occurrence of peak amplitude of the FES. The modified FES also is signal processed to sharpen or slim the peak portion such that increasing the amplitude of the modified FES reaches an amplitude detection threshold closer to the true peak of the modified FES, and hence closer to the desired focus position than if the amplitude detection threshold were used on the FES. In a preferred form of the invention, FES is differentiated to produce a differentiated FES, then the differentiated FES is subtracted from FES to produce the modified FES.

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