JPS6037981U

JPS6037981U - Beam index type color television receiver

Info

Publication number: JPS6037981U
Application number: JP12889883U
Authority: JP
Inventors: 杉下　正蔵
Original assignee: 三洋電機株式会社
Priority date: 1983-08-20
Filing date: 1983-08-20
Publication date: 1985-03-15
Also published as: JPH0349505Y2

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図は螢光面部の模式図、第２図以下の図面はこの考
案のビームインデックス型カラーテレビジョン受信機の
１実施例を示し、第２図は要部のブロック図、第３図１
−、−ｇは第２図の各部の波形図、第４図は電子ビーム
の掃引説明図、第５図ａ、ｂはインデックス光信号の光
量、画面輝度それぞれの説明用波形図である。１・・・・・・インデックス信号入力端子、２・・・・
・・輝度信号入力端子、３・・・・・・カラー信号入力
端子、４・・・・・・帰線信号入力端子、５・・・・・
・周波数てい倍器、６・・・・・・輝度レベル検出器、
７・・・・・・検波器、訃・・・・・カラーレベル検出
器、９・・・・・・アンドゲート、１０・・・・・・ア
ナログスイッチ、１１・・・・・・補助偏向回路、Ｒ，
Ｂ、Ｇ・・・・・・３原色螢光体、■・・・・・・イン
デックス螢光体、２・・・・・・黒色ガード体。Fig. 1 is a schematic diagram of the fluorescent surface section, Fig. 2 and the following drawings show an embodiment of the beam index type color television receiver of this invention, Fig. 2 is a block diagram of the main parts, and Fig. 3
- and -g are waveform diagrams for each part in FIG. 2, FIG. 4 is an explanatory diagram of the sweep of the electron beam, and FIGS. 5a and 5b are waveform diagrams for explaining the light quantity of the index optical signal and the screen brightness, respectively. 1... Index signal input terminal, 2...
...Brightness signal input terminal, 3...Color signal input terminal, 4...Retrace signal input terminal, 5...
・Frequency multiplier, 6... Brightness level detector,
7...Detector,...Color level detector, 9...And gate, 10...Analog switch, 11...Auxiliary deflection circuit, R,
B, G...3 primary color phosphors, ■...index phosphor, 2...black guard body.

Claims

[Scope of utility model registration request]

On the inner surface of the face plate of the picture tube, striped three primary color phosphors arranged repeatedly, striped black guard bodies provided between adjacent primary color phosphors, and the three primary color phosphors A fluorescent surface portion consisting of striped index phosphors selectively provided on the inner surface of each of the black guard bodies at a period having a correlation with the arrangement is formed, and the fluorescent surface portion is irradiated with an electron beam from the inner surface side. A single electron gun that sweeps and irradiates, a photoelectric converter that converts the index light signal of each of the index phosphors into an electrical signal and outputs an index signal, and converts the frequency of the index signal to the array frequency of the three primary color phosphors. an index processing unit that converts the conversion index signal of the processing unit with a video signal to control the irradiation position number of the electron beam; and a modulation control unit that converts the frequency of the index signal to the arrangement frequency of the black guard body. a deflection control signal forming section that outputs a deflection control signal that is transmitted through the gate section; According to the deflection control signal, while the beam current is lower than the predetermined current, the sweep speed of the electron beam is slowed down when the black guard body is irradiated, and accelerated when the three primary color phosphors are irradiated.
- A beam index type color television receiver equipped with an auxiliary deflection circuit.