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公开(公告)号：US4023130A
公开(公告)日：1977-05-10
申请号：US571432
申请日：1975-04-24
CPC分类号： G11B3/125
摘要： The vertical movement of a phonograph pick-up arm is controlled magnetically or electro-magnetically by means including a body of magnetic material attached to the arm and magnetic field producing means arranged to exert a force on the body.
摘要翻译： 留声机拾取臂的垂直运动通过包括附接到臂的磁性材料体和磁场产生装置被布置成对身体施加力的装置而被磁力或电磁控制。
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公开(公告)号：US4065188A
公开(公告)日：1977-12-27
申请号：US705026
申请日：1976-07-14
CPC分类号： G11B3/38 , F16C29/02 , F16C32/0637 , F16C33/1035
摘要： A linear bearing arrangement has a slider which slides in a channel in a slide and a layer of magnetic lubricant material which adheres to a magnetized region or regions of the slide, slider or both.
摘要翻译： 线性轴承装置具有在滑动件的通道中滑动的滑块和粘附到滑动件，滑块或两者的磁化区域或磁性区域的磁性润滑剂材料层。
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公开(公告)号：US3952146A
公开(公告)日：1976-04-20
申请号：US463252
申请日：1974-04-23
CPC分类号： H04N5/83 , G11B11/00 , G11B11/03 , H01J37/153 , H01J37/30
摘要： This invention concerns a method of recording wide-band signals on a thermoplastic film. The signal to be recorded is converted to an intensity modulation of a beam of electrons which is directed at the surface of a thin thermoplastic film carried on a conductive substrate. The film is rotated in its own plane and simultaneously translated so that the beam scans the film in a track which follows a spiral path. The deposition of charge produces after heating of the film a spatial modulation of the film. The intensity of the beam and the beam's impingement on the film is controlled in order that the charge pattern is appropriate for the formation of a spiral groove which is substantially invariant in cross-section but varies in depth along its direction of progression in accordance with the signal that modulates the intensity of the beam of electrons. The recording thus made can be used for the production of video discs capable of mechanical playback.
摘要翻译： 本发明涉及一种在热塑性薄膜上记录宽带信号的方法。 要记录的信号被转换成电子束的强度调制，该电子束指向在导电基底上承载的薄热塑性薄膜的表面。 胶片在其自身的平面中旋转并且同时平移，使得光束在沿着螺旋路径的轨道中扫描胶片。 电荷的沉积在膜的加热之后产生薄膜的空间调制。 控制光束和光束对膜的冲击的强度，以使得电荷图案适于形成螺旋槽，该螺旋槽的横截面基本上不变，但沿着其进展方向在深度方向上变化 信号调制电子束的强度。 如此制作的记录可以用于制造能够进行机械回放的视频盘。
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4.发明授权Method of recording wide-band signals on a thermoplastic film by use of a beam of electrons 失效通过使用电子束在热塑性薄膜上记录宽带信号的方法
公开(公告)号：US4041532A
公开(公告)日：1977-08-09
申请号：US600573
申请日：1975-07-31
IPC分类号： G11B11/00 , H01J37/153 , H01J37/30 , H04N5/83 , H04N5/82
CPC分类号： H04N5/83 , G11B11/00 , H01J37/153 , H01J37/30
摘要： This invention concerns a method of recording wide-band signals on a thermoplastic film. The signal to be recorded is converted to an intensity modulation of a beam of electrons which is directed at the surface of a thin thermoplastic film carried on a conductive substrate. The film is rotated in its own plane and simultaneously translated so that the beam scans the film in a track which follows a spiral path. The deposition of charge produces after heating of the film a spatial modulation of the film. The intensity of the beam and the beam's impingement on the film is controlled in order that the charge pattern is appropriate for the formation of a spiral groove which is substantially invariant in cross-section but varies in depth along its direction of progression in accordance with the signal that modulates the intensity of the beam of electrons. The recording thus made can be used for the production of video discs capable of mechanical playback.
摘要翻译： 本发明涉及一种在热塑性薄膜上记录宽带信号的方法。 要记录的信号被转换成电子束的强度调制，该电子束指向在导电基底上承载的薄热塑性薄膜的表面。 胶片在其自身的平面中旋转并且同时平移，使得光束在沿着螺旋路径的轨道中扫描胶片。 电荷的沉积在膜的加热之后产生薄膜的空间调制。 控制光束和光束对膜的冲击的强度，以使得电荷图案适于形成螺旋槽，该螺旋槽的横截面基本上不变，但沿着其进展方向在深度方向上变化 信号调制电子束的强度。 如此制作的记录可以用于制造能够进行机械回放的视频盘。
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