PURPOSE: To reduce mistake in photographing, by combining a image pickup means for taking a partial image through a separation optical system and a second display section for displaying a signal formed by the image pickup means to compare a waveform of a video display with a photography memory signal waveform on real time.
CONSTITUTION: A half mirror 5 is arranged being inclined by 45° in front of the surface of a indicator tube of an oscilloscope. An optical system 6 is arranged to form an image at an optically conjugated position of the reflected light therefrom and an image pickup element 7 to take image waveform of the surface of a CRT tube. The display waveform of the surface of the CRT tube is photographed and recorded on real time by introducing the reflected light to a camera simultaneously inspecting the transmission light with eyes using an action of the mirror 5 of separation into the transmission light and the reflected light. Moreover, an output video signal of the element 7 is processed by a processing section 11 and recorded and/or reproduced at a recording section 12 to be shown on a video display 13. This enables comparison of a waveform actually photographed and/or recorded with the display waveform on the surface of the CRT tube, thereby reducing a mistake in photographing significantly.
| JPH0575672 | [Name of device] Digital oscilloscope |
KINOSHITA TAKAO
TOJO AKIHIKO
| JP62194307B | ||||
| JP62086651B | ||||
| JPS50114112A | 1975-09-06 | |||
| JPS58100155A | 1983-06-14 |
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