| 摘要 |
A double contact control board is provided to improve the uniformity of light-transmittance on the work plane of a contact control board. A signal processing unit(3) comprises one or more signal identifying circuits to distinguish the kind of a contact control induction signal which is transmitted from a condenser contact control board unit or register contact control board unit, and then performs the signal processing procedure after automatically selecting a suitable signal processing model. The linear loci of the first and second axis directions comprise transparency linear loci of the parallel arrangement, and vertically cross each other. On cross nodal point parts of the linear loci, an induction expansion surface is installed. |
