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Patent Agency Ranking
公开(公告)号：US3924167A
公开(公告)日：1975-12-02
申请号：US39815573
申请日：1973-09-17
Applicant: AMPEX
Inventor： CLARK HAROLD V , SKALON PETER , EMMONS LAWRENCE D
CPC classification number: H02K29/10
Abstract: A three phase brushless DC motor incorporates a stationary armature having three symmetrically positioned sets of windings, a two pole permagnet rotor having photoelectric self commutation means for producing three switching signals, and square wave generation circuitry which produces a three phase square wave e.m.f. in response to said switching signals to energize the windings.
Abstract translation: 三相无刷直流电动机包括具有三个对称定位的绕组的固定电枢，具有用于产生三个开关信号的光电自换向装置的双极永磁转子和产生三相方波的矩形波电路。 响应于所述切换信号以激励绕组。
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2.发明授权Maintaining a space between sheets from and onto which document images are transduced 失效维护从文件图像传输到的表格之间的空格
公开(公告)号：US3665099A
公开(公告)日：1972-05-23
申请号：US3665099D
申请日：1971-01-28
Applicant: AMPEX
Inventor： EMMONS LAWRENCE D
CPC classification number: H04N1/00588 , H04N1/0057 , H04N1/00602 , H04N1/00607 , H04N1/00676 , H04N1/0473 , H04N1/12 , H04N1/127 , H04N2201/02439 , H04N2201/04758 , H04N2201/04794
Abstract: As a beam is deflected to transversely scan sheets as they are conveyed past the deflected beam for transferring image intelligence between a document image form on the sheet and a video signal form for processing by a video processing circuit, the beam is deflected in the direction of the travel of the conveyed sheets at a velocity relative to the velocity of travel of the sheets to produce complementary motion so that the entire sheet is scanned by the beam during a single frame video signal. The operations of the video processing circuit, sheet transport mechanism and beam deflection signal generator are time synchronized with the vertical synchronizing signal associated with the video signal such that each sheet is positioned at the location at which the first upstream line of the raster of scanned lines is produced when the deflections of the beam and transduction of the video intelligence signal is commenced.
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公开(公告)号：DE2444376A1
公开(公告)日：1975-03-27
申请号：DE2444376
申请日：1974-09-17
Applicant: AMPEX
Inventor： CLARK HAROLD V , SKALON PETER , EMMONS LAWRENCE D
Abstract: A three phase brushless DC motor incorporates a stationary armature having three symmetrically positioned sets of windings, a two pole permagnet rotor having photoelectric self commutation means for producing three switching signals, and square wave generation circuitry which produces a three phase square wave e.m.f. in response to said switching signals to energize the windings.
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