| 摘要 |
PURPOSE:To make it possible to perform simple and accurate check as compared to a case using oscilloscope, by directly checking the signal of a personal computer by using a monitor television receiver. CONSTITUTION:The signal of a personal computer is applied to plural input terminals 1, 2, 3 which are, in turn, connected to a mixing circuit 7 through gate circuits 4, 5, 6. On the other hand, a gate pulse is generated from a decoder 8 to be applied to the gate circuits 4, 5, 6 where subjected to time sharing and applied to the mixing circuit 7 to be applied to the video amplifier of a television receiver from a terminal 9. The horizontal synchronous signal of the television receiver is applied to a terminal 10 and a vertical synchronous signal thereof is applied to a terminal 11. The horizontal synchronous signal is applied to a counter 13 through a change-over switch 12 and the vertical synchronous signal is applied through a change-over switch 13 to carry out reset. The output of the counter 13 is applied to the decoder 8 and a gate pulse is outputted as the output thereof. As the result, display is obtained on the image surface of the television receiver and the investigation of the personal computer can be performed. |
