JPS5986776U

JPS5986776U - Video camera viewfinder display device

Info

Publication number: JPS5986776U
Application number: JP18342482U
Authority: JP
Inventors: 杉原　正一
Original assignee: 三菱電機株式会社
Priority date: 1982-12-01
Filing date: 1982-12-01
Publication date: 1984-06-12

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図ないし第３図はこの考案の原塊を説明す　　−る
ための図であり一第１図ａはこの考案の一実施　　　　
。例に用いられる被写体を示す図であり、第１図すは第１
図ａに示す被写体の映像信号を示す図である。第２図ａ
はフォーカスがずれている場合の被写体を示す図であり
、第２図すは同じくそのときの映像信号である。第３図
ａはフォーカスが正確に合っている場合の被写体を示す
図であり、第３図すはそのときの映像信号を示す図であ
る。第４図はこの考案の一実施例の概略ブロック図であ
る。図において、１は被写体、４はエツジ波形発生回路、５
はブランキング回路、６はセットアツプ補正回路、８は
混合回路を示す。 −−めノ図　　− 第２図Figures 1 to 3 are diagrams for explaining the basic idea of this idea, and Figure 1a shows one implementation of this idea.
. Fig. 1 is a diagram showing a subject used in an example;
FIG. 3 is a diagram showing a video signal of the subject shown in FIG. Figure 2a
2 is a diagram showing a subject when the focus is out of focus, and FIG. 2 also shows a video signal at that time. FIG. 3a is a diagram showing a subject when it is accurately focused, and FIG. 3 is a diagram showing a video signal at that time. FIG. 4 is a schematic block diagram of an embodiment of this invention. In the figure, 1 is the subject, 4 is the edge waveform generation circuit, and 5 is the object.
numeral 6 represents a blanking circuit, numeral 6 represents a setup correction circuit, and numeral 8 represents a mixing circuit. --Meno diagram--Figure 2

Claims

[Claims for Utility Model Registration] - (1) A viewfinder display device that displays instructions for focus adjustment on a cathode ray tube provided in a video camera, the viewfinder display device displaying instructions for focus adjustment on a cathode ray tube provided in a video camera, which A view of a video camera comprising: edge signal detection means for detecting an edge signal in a portion; mixing means for mixing the output of the edge signal detection means with the video signal; and means for displaying the mixed signal on the cathode ray tube. Finder display device. (2) The edge signal detection means includes a terminal for receiving a window signal corresponding to the central portion of the object, and a terminal for blanking the edge signal of the object using the window signal to detect the edge signal at the central portion of the object. A viewfinder display device for a video camera according to claim 1, comprising blanking means for outputting the output. (3) The video power/view of the utility model registration claim 1 or 2 further includes means for emphasizing edge signals in the central part of the object displayed on the cathode ray tube. Finder display device.