公开(公告)号：US3654624A

公开(公告)日：1972-04-04

申请号：US3654624D

申请日：1969-03-17

Applicant: PRECISION INSTR CO

Inventor： BECKER CARL H ,  DELL HAROLD R ,  FRENCH BALLARD D ,  HASHIGUCHI MASAO ,  MCFARLAND KEITH E ,  WONG HERMAN

IPC: G06K1/12 ,  G06K17/00 ,  G11B7/0025 ,  G11B7/013 ,  G11B7/085 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11C13/04 ,  G01D15/14 ,  G01D15/28

CPC classification number: G11B20/18 ,  G06K1/126 ,  G06K17/00 ,  G06K17/0009 ,  G11B7/0025 ,  G11B7/013 ,  G11B7/085 ,  G11B7/09 ,  G11B7/12 ,  G11B20/10527 ,  G11B20/12 ,  G11B2007/13727

Abstract: A laser recording system for scanning a modulated laser beam in spaced parallel lines across a flat elongated strip of energy absorbing material and for ablating minute regions from the material in a linear pattern representing digital bits according to the intensity of the modulating signal. The flat elongated record strip is wound around the surface of a drum during the recording and reproducing operations and the drum is rotated with respect to the laser beam. By means of a servo-controlled linear positioning mechanism, the laser beam is moved transversely to the direction of drum rotation in a manner which will permit selection of any one of a large number of spaced parallel scan lines on the record strip. The final positioning of the laser beam to the selected scan line is performed by a servo-controlled mirror galvanometer mounted on the linear positioning mechanism carriage.

Abstract translation: 一种激光记录系统，用于沿平行的能量吸收材料带间隔开的平行线扫描经调制的激光束，并根据调制信号的强度以表示数字位的线性图形从材料中消除微小区域。 在记录和再现操作期间，平坦的细长记录条缠绕在鼓的表面上，并且鼓相对于激光束旋转。 通过伺服控制的线性定位机构，激光束以允许选择记录条上的大量间隔开的平行扫描线中的任何一个的方式横向于鼓旋转方向移动。 激光束到所选择的扫描线的最终定位由安装在线性定位机构托架上的伺服控制的镜式电流计进行。

公开(公告)号：US3657707A

公开(公告)日：1972-04-18

申请号：US3657707D

申请日：1969-03-17

Applicant: PRECISION INSTR CO

Inventor： MCFARLAND KEITH E ,  BECKER CARL H ,  DELL HAROLD R ,  HASHIGUCHI MASAO ,  LARA EDWARD D ,  WONG HERMAN

IPC: G06F12/16 ,  B23K26/08 ,  G06F3/06 ,  G06F11/00 ,  G06K17/00 ,  G11B7/00 ,  G11B7/0025 ,  G11B7/0037 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/013 ,  G11B7/09 ,  G11B7/12 ,  G11B15/67 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11C13/04 ,  G11C29/00

CPC classification number: G11B20/18 ,  B23K26/08 ,  B23K2201/007 ,  G06F11/00 ,  G06K17/00 ,  G11B7/0025 ,  G11B7/00375 ,  G11B7/00451 ,  G11B7/013 ,  G11B7/09 ,  G11B7/12 ,  G11B15/67 ,  G11B20/10527 ,  G11B20/12

Abstract: A laser data recording system for storing digital information in the form of digital bits ablated from an energy-absorbing storage medium by an intensity modulated laser beam. The system provides instantaneous reflective readout of the local surface state of the storage medium as the ablative recording process is initiated at selected locations along a scan line, in response to the intensity of the modulated laser beam. This reflective readout simultaneously provides a recording surface continuity verification signal which is monitored to insure that the storage medium surface is free from defects at the point of recording. The proper sequence of levels of this instantaneous reflective signal verifies that the portions of the data record which are to be ablated are actually generated, and that the regions which are not to be ablated are void-free, thus insuring a completely correct recording. The laser beam is scanned in parallel scan lines across the storage surface and during read-out of stored information the intensity of the laser beam is set at a fixed level sufficiently low that ablation cannot occur. Signals are also provided for automatically centering the laser beam on selected scan line and for servo control of laser intensity. In one embodiment removable and replaceable recording strips are mounted around the surface of the drum. A rectangular crosssection is optically imparted to the laser beam.

Abstract translation: 一种激光数据记录系统，用于以强度调制激光束从能量吸收存储介质中消除数字位数形式的数字信息。 响应于调制的激光束的强度，随着沿着扫描线的选定位置开始烧蚀记录过程，系统提供存储介质的局部表面状态的瞬时反射读出。 该反射读出同时提供记录表面连续性验证信号，其被监视以确保存储介质表面在记录点处没有缺陷。 该瞬时反射信号的正确级别验证实际生成要消除的数据记录的部分，并且不被消融的区域是无空隙的，从而确保完全正确的记录。 激光束以平行扫描线扫描存储表面，并且在读出所存储的信息期间，将激光束的强度设定在足够低的固定水平，从而不会发生消融。 还提供信号用于将激光束自动定心在选定的扫描线上并用于伺服控制激光强度。 在一个实施例中，可移动和可替换的记录条安装在滚筒的表面周围。 光学地赋予激光束的矩形横截面。