| 摘要 |
<p>ELECTROGRAPHIC SYSTEM An electrographic system utilizing A transparent resistive layer which operates in conjunction with a stylus or cross hair cursor excited from an a.c. source todevelop coordinate defining electrical signals. Through the utilization of a sequence of border switching arrays, the signals may be collected from the resistive surface in a predetermined sequence and submitted in serial fashion to the input of a signal treatment network. As a consequence, only one such network is required to effectoperation of the system. The hand-held cursor is formed including a transparent disk carrying cross hairs which is excited from an a.c. source to very accurately locate coordinate positions upon the resistive surface.</p> |
