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公开(公告)号：US3869193A
公开(公告)日：1975-03-04
申请号：US39836473
申请日：1973-09-18
Applicant: HONEYWELL INC
Inventor： SCHMIT FRANCIS M
IPC: G11B7/125 , G11B11/10 , G11B11/105 , G11C13/06 , G02B17/00
CPC classification number: G11C13/06 , G11B7/125 , G11B11/10 , G11B11/10504 , G11B11/10515 , G11B11/10532
Abstract: The signal-to-noise ratio in an optical memory is improved by using separate write and read beams. The read beam has a larger diameter than the write beam at the final focusing lens so that the read beam is focused to a read light spot at the memory medium which has a diameter less than the diameter of the write spot.
Abstract translation: 通过使用单独的写入和读取光束来提高光学存储器中的信噪比。 读取光束在最终聚焦透镜处具有比写入光束更大的直径，使得读取光束被聚焦到存储介质上的读取光点，其具有小于写入点的直径的直径。
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公开(公告)号：US3705395A
公开(公告)日：1972-12-05
申请号：US3705395D
申请日：1971-05-03
Applicant: HONEYWELL INC
Inventor： AAGARD ROGER L , SCHMIT FRANCIS M
CPC classification number: G11B11/10
Abstract: In an optical mass memory utilizing Curie point writing, information is stored on a manganese bismuth film having low and high temperature crystallographic phases. The Kerr or Faraday magneto-optic rotation angle exhibited by a region of manganese bismuth having a low temperature crystallographic phase is different from the magneto-optic rotation angle exhibited by a region having the high temperature crystallographic phase. The magnetization direction of a region is sensed independent of the crystallographic phase. A magneto-optic readout system is utilized in which the extinction axis of the analyzer is set at an angle between the low temperature and the high temperature phase magneto-optic rotation angles for a ''''0'''' bit. Therefore the output from a low temperature ''''0'''' bit is identical to that of a high temperature phase ''''0'''' bit.
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公开(公告)号：US3459668A
公开(公告)日：1969-08-05
申请号：US3459668D
申请日：1965-05-21
Applicant: HONEYWELL INC
Inventor： SCHMIT FRANCIS M
CPC classification number: H01L21/223 , C30B29/06 , C30B31/08 , C30B31/165 , Y10S252/951
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