JPS63153685U - - Google Patents
Info
- Publication number
- JPS63153685U JPS63153685U JP4728587U JP4728587U JPS63153685U JP S63153685 U JPS63153685 U JP S63153685U JP 4728587 U JP4728587 U JP 4728587U JP 4728587 U JP4728587 U JP 4728587U JP S63153685 U JPS63153685 U JP S63153685U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- band
- secam
- reference signal
- color difference
- 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
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第１図は、この考案のＳＥＣＡＭ方式色処理回
路の一実施例を示す回路構成図、第２図は、従来
のＳＥＣＡＭ方式色処理回路の一例を示す回路構
成図である。
８……ベルフイルタ回路、９……リミツタ回路
、１０……１／４分周回路、２１……ＳＥＣＡＭ
方式色処理回路、２２……自動色レベル制御回路
。
FIG. 1 is a circuit diagram showing an embodiment of a SECAM color processing circuit according to the present invention, and FIG. 2 is a circuit diagram showing an example of a conventional SECAM color processing circuit. 8... Bell filter circuit, 9... Limiter circuit, 10... 1/4 frequency divider circuit, 21... SECAM
System color processing circuit, 22...Automatic color level control circuit.
Claims (1)
路が分離した周波端数変調された線順次色差信号
を、リミツタ回路にて振幅制限したのち、帯域圧
縮することで、低域変換するＳＥＣＡＭ方式色処
理回路であつて、前記帯域波回路の前段に設け
られ、色差判別のための照合信号を抽出し、この
照合信号のレベルを定値制御する自動色レベル制
御回路を設けてなるＳＥＣＡＭ方式色処理回路。 This is a SECAM color processing circuit that performs low frequency conversion by limiting the amplitude of a frequency fraction modulated line sequential color difference signal separated by a band wave circuit from a SECAM composite video signal using a limiter circuit and then compressing the band. and an automatic color level control circuit which is provided upstream of the band wave circuit, extracts a reference signal for color difference discrimination, and controls the level of the reference signal to a fixed value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4728587U JPS63153685U (en) | 1987-03-30 | 1987-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4728587U JPS63153685U (en) | 1987-03-30 | 1987-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63153685U true JPS63153685U (en) | 1988-10-07 |
Family
ID=30867747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4728587U Pending JPS63153685U (en) | 1987-03-30 | 1987-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63153685U (en) |
-
1987
- 1987-03-30 JP JP4728587U patent/JPS63153685U/ja active Pending
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