JPS6268384U - - Google Patents
Info
- Publication number
- JPS6268384U JPS6268384U JP16014385U JP16014385U JPS6268384U JP S6268384 U JPS6268384 U JP S6268384U JP 16014385 U JP16014385 U JP 16014385U JP 16014385 U JP16014385 U JP 16014385U JP S6268384 U JPS6268384 U JP S6268384U
- Authority
- JP
- Japan
- Prior art keywords
- gate
- output
- signal
- creating
- detection circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Processing Of Color Television Signals (AREA)
Description
第1図は実施例のブロツク図、第2図は波形図
、第3図はPAL信号、SECAM信号を示す図
、第4図は従来例を示すブロツク図である。
14……レベル検波回路、15……遅延回路、
16……第1モノマルチ(ゲートパルス作成手段
)、17……ANDゲート、18……第2モノマ
ルチ、19……積分回路、20……コンパレータ
(判別手段)。
FIG. 1 is a block diagram of the embodiment, FIG. 2 is a waveform diagram, FIG. 3 is a diagram showing PAL signals and SECAM signals, and FIG. 4 is a block diagram showing a conventional example. 14...Level detection circuit, 15...Delay circuit,
16...First monomulti (gate pulse generating means), 17...AND gate, 18...Second monomulti, 19...Integrator circuit, 20...Comparator (discrimination means).
Claims (1)
ル検波回路と、水平同期信号に基づきバースト信
号及びその後の期間を含むゲート信号を作成する
ゲート信号作成手段と前記レベル検波回路出力と
ゲート信号作成手段出力を入力とするANDゲー
ト、該ANDゲート出力に基づき判別出力を作成
する手段を備えるPAL/SECAM判別回路。 a level detection circuit for detecting a portion where the level of the color signal has decreased; a gate signal creation means for creating a gate signal including a burst signal and a subsequent period based on a horizontal synchronization signal; and an output of the level detection circuit and an output of the gate signal creation means. A PAL/SECAM discriminating circuit comprising: an AND gate that receives as input; and means for creating a discriminating output based on the output of the AND gate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16014385U JPS6268384U (en) | 1985-10-18 | 1985-10-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16014385U JPS6268384U (en) | 1985-10-18 | 1985-10-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6268384U true JPS6268384U (en) | 1987-04-28 |
Family
ID=31085247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16014385U Pending JPS6268384U (en) | 1985-10-18 | 1985-10-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6268384U (en) |
-
1985
- 1985-10-18 JP JP16014385U patent/JPS6268384U/ja active Pending