| 摘要 |
1,090,125. Electric selective signalling. LICENTIA PATENTVERWALTUNGS G.m.b.H. March 5, 1965 [March 9, 1964], No. 9484/65. Heading G4H. A photo-electric shaft position digitizing system is characterized in that one coded disc is illuminated by light passing either over or through a transparent annulus in a second coded disc. This feature means that all the discs of the system can be illuminated from a single light source. |
