JPS60153077U

JPS60153077U - Multi-system color television receiver

Info

Publication number: JPS60153077U
Application number: JP3927284U
Authority: JP
Inventors: 岡本　敏一
Original assignee: 三洋電機株式会社
Priority date: 1984-03-19
Filing date: 1984-03-19
Publication date: 1985-10-12
Also published as: JPH0336147Y2

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ＰＡＬおよびＮＴＳＣのカラーテレビジョン信
号の受信可能なマルチシステムカラーテレビジョン受像
機の色信号処理部のブロック図、第２図はＰＡＬのみに
用いられる分離遅延部の結線図、第３図はＰＡＬおよび
ＮＴＳＣに共用される従来の分離遅延部の結線図、第４
図以下の図面はこの考案のマルチシステムカラーテレビ
ジョン受像機の実施例を示し、第４図は１実施例の要部
の結線図、第５図は他の実施例の要部の結線図である。５″、５“′・・・遅延分離部、’Ｃ１２，Ｃ１３，Ｃ
１４・・・コンデンサ、Ｄ３．Ｄ４・・・第３．第４ダ
イオード、ＤＬ・・・ＩＨ遅延回路、Ｑ３・・・第３ト
ランジスタ、Ｒ２０・・・抵抗、ＶＨ２・・・可変抵抗
。Fig. 1 is a block diagram of a color signal processing section of a multi-system color television receiver capable of receiving PAL and NTSC color television signals, Fig. 2 is a wiring diagram of a separation delay section used only for PAL, and Fig. 3 The figure is a connection diagram of a conventional separation delay unit shared by PAL and NTSC.
The following drawings show embodiments of the multi-system color television receiver of this invention. Figure 4 is a wiring diagram of the main parts of one embodiment, and Figure 5 is a wiring diagram of the main parts of another embodiment. be. 5", 5"'...Delay separation section, 'C12, C13, C
14... Capacitor, D3. D4... 3rd. 4th diode, DL...IH delay circuit, Q3...3rd transistor, R20...resistor, VH2...variable resistor.

Claims

[Scope of utility model registration request]

In a multi-system color television receiver capable of receiving at least PAL and NTSC color television signals, a delay separator that separates and forms two types of color difference signals from a chroma signal of the color television signal includes a delay separator that separates and forms two types of color difference signals from a chroma signal of the color television signal. is input, and PAJ-
A transistor whose bias increases when receiving NTSC and decreases when receiving NTSC is provided in the PAL delay dedicated signal path between the emitter of the transistor and a one horizontal scanning period delay circuit, and is turned on by increasing the bias of the transistor. At the same time, one diode turns off due to a decrease in the bias of the transistor, and the delayed chroma signal of the delay circuit that delayed the chroma signal is input to the primary winding, and the chroma signal is connected to the emitter of the transistor and the PAL. , a transformer that is input to the middle tap of the secondary winding via an NTSC common signal path and separates and outputs the two color difference signals to the secondary winding during PAL reception and NTSC reception; A level setting variable resistor is provided between the emitter and ground, and a sliding piece is provided between the end of the variable resistor on the emitter side and the sliding piece. It reduces the impedance between the emitter of the transistor and the ground when receiving NTSC signals, and increases the impedance between the emitter of the transistor and the ground when receiving NTSC signals. and the other diode for equalizing the levels of both the color difference signals at the same time.