| 摘要 |
<p>PURPOSE:To obtain a display device for air traffic control systems which can effectively prevent the occurrence of a data display discontinuation accident caused by an external radio wave obstacle, etc. CONSTITUTION:This display device of a random stroke system for air traffic control system inputs an external radar trigger signal 120 and displays sweep data and digital data in a time-divided state. An internal radar trigger signal generation circuit 1 which outputs a signal equivalent to the signal 120 and trigger selection circuit 3 which selectively outputs either the signal 120 or the internal radar trigger signal 1 as required are provided in the input stage of the signal 120.</p> |
