JPS60114488U - Color demodulation circuit for video playback equipment - Google Patents
Color demodulation circuit for video playback equipmentInfo
- Publication number
- JPS60114488U JPS60114488U JP72584U JP72584U JPS60114488U JP S60114488 U JPS60114488 U JP S60114488U JP 72584 U JP72584 U JP 72584U JP 72584 U JP72584 U JP 72584U JP S60114488 U JPS60114488 U JP S60114488U
- Authority
- JP
- Japan
- Prior art keywords
- color
- frequency
- demodulation circuit
- signals
- color demodulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Processing Of Color Television Signals (AREA)
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来の色復調回路を示すブロック図、第２図
は、本考案の一実施例を示すブロック図、第３図は、本
考案の他の実施例を示すブロック図である。
主要部分の符号の説明、２・・・ベルフィルタ、３・・
・ＩＨ遅延回蕗、４・・・ＳＥＣＡＭスイッチ回路、７
・・・Ｒ−Ｙ復調回路、８・・・Ｂ−Ｙ復調回路、”１
１．．１−□
２．１４・・・乗算器、１３．１５・・・発振器。
＋−−’−−−さ
−ＹFIG. 1 is a block diagram showing a conventional color demodulation circuit, FIG. 2 is a block diagram showing one embodiment of the present invention, and FIG. 3 is a block diagram showing another embodiment of the present invention. Explanation of symbols of main parts, 2...Bell filter, 3...
・IH delay circuit, 4... SECAM switch circuit, 7
...RY demodulation circuit, 8...B-Y demodulation circuit, "1
1. ．． 1-□ 2.14... Multiplier, 13.15... Oscillator. ＋−−'−−−Sa−Y
Claims (1)
る２つの搬送色信号が１水平走査期間おきに交互に挿入
されて形成されたＳＥＣＡＭカラービデオ信号によって
映像を再生する映像再生装置の色復調回路であって、前
記２つの搬送色信号の周波数が高（なるように周波数変
換を行なう周波数変換手段を含み、前記周波数変換手段
によって周波数変換された前記２つの搬送色信号をＦＭ
復調器に供給することによって前記２つの色差信号を復
調することを特徴とする色復調−路。A color demodulation circuit for a video reproducing device that reproduces video using a SECAM color video signal formed by alternately inserting two carrier color signals each containing two color difference signals and consisting of an FM modulated wave every one horizontal scanning period. and includes a frequency conversion means for converting the frequency so that the frequency of the two carrier color signals becomes high (FM), the frequency conversion means converting the frequency of the two carrier color signals by the frequency conversion means
A color demodulation path, characterized in that the two color difference signals are demodulated by supplying them to a demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP72584U JPS60114488U (en) | 1984-01-06 | 1984-01-06 | Color demodulation circuit for video playback equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP72584U JPS60114488U (en) | 1984-01-06 | 1984-01-06 | Color demodulation circuit for video playback equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60114488U true JPS60114488U (en) | 1985-08-02 |
Family
ID=30472825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP72584U Pending JPS60114488U (en) | 1984-01-06 | 1984-01-06 | Color demodulation circuit for video playback equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60114488U (en) |
-
1984
- 1984-01-06 JP JP72584U patent/JPS60114488U/en active Pending
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