| 摘要 |
<p>PURPOSE:To eliminate erroneous data transmission due top poor contact, and internal element damage, and enhance the water resistance of a recording medium by making the hermetical close structure thereof possible by transmitting read data toward a reader corresponding to a light blocking state. CONSTITUTION:When data are read from an IC and C, address informations flow to a memory system 10 through a photodetector group 9 and a memory- address transmitting line 12 by controlling a plurality of light emitting elements 3 on the basis of desired address informations by a controller 4. A control signal is similarly transmitted to the memory system 10 through the light emitting elements 3, the photodetector group 9 and a transmission line 13 and read data appear on a read data transmission line 14. A liquid crystal controller 18 controls a liquid crystal shutter 7 on the basis of said read data and the signal is returned to a phototransistor 2 while the transmission and blocking of the light from a light source 1 is controlled. This signal is transmitted to the controller 4 to complete the reading of data.</p> |
