JPS6399483U - - Google Patents
Info
- Publication number
- JPS6399483U JPS6399483U JP19629386U JP19629386U JPS6399483U JP S6399483 U JPS6399483 U JP S6399483U JP 19629386 U JP19629386 U JP 19629386U JP 19629386 U JP19629386 U JP 19629386U JP S6399483 U JPS6399483 U JP S6399483U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- video signal
- processing circuit
- recording medium
- 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.)
- Granted
Links
- 230000000873 masking effect Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims 2
- 238000000926 separation method Methods 0.000 claims 2
- 238000007493 shaping process Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Synchronizing For Television (AREA)
- Television Signal Processing For Recording (AREA)
Description
第１図は本考案に係る映像信号処理回路のブロ
ツク図、第２図は再生回路のブロツク図、第３図
は第１図に示す回路の動作を示すタイミングチヤ
ート、第４図は磁気デイスクの信号記録状態を説
明する図である。
１…磁気デイスク、２…磁気ヘツド、３…ＰＧ
コイル、８…マスキング回路、９…メモリ回路、
１２…ＰＧヨーク。
Fig. 1 is a block diagram of a video signal processing circuit according to the present invention, Fig. 2 is a block diagram of a reproducing circuit, Fig. 3 is a timing chart showing the operation of the circuit shown in Fig. 1, and Fig. 4 is a block diagram of a magnetic disk. It is a figure explaining a signal recording state. 1...Magnetic disk, 2...Magnetic head, 3...PG
Coil, 8...masking circuit, 9...memory circuit,
12...PG York.
Claims (1)
定すべき基準信号発生器が配備された信号記録媒
体から、一対の信号トラツクに記録されている一
連のフイールド信号を連続して再生し、後段の回
路へ送出する映像信号処理回路に於いて、信号記
録媒体から再生された合成映像信号は、該信号に
含まれる垂直同期信号を分離する同期分離回路６
，７を経て、前記基準信号発生器から得られる基
準信号がトリガー信号として接続されたマスキン
グ回路８へ連結し、該マスキング回路８は、トリ
ガー信号の入力時点を基準とする所定期間だけ前
記同期分離回路６，７の出力信号を遮断して真の
垂直同期信号を作成し、後段回路へ送出すること
を特徴とする映像信号処理回路。 マスキング回路８は、トリガー信号の入力に
より所定期間だけローレベルとなるパルス信号を
作成するパルス整形回路１７と、該パルス整形回
路１７及び垂直同期回路６，７の出力信号が各入
力端に接続されたアンド回路１８とから構成され
る実用新案登録請求の範囲第１項に記載の映像信
号処理回路。 基準信号発生器は信号記録媒体となる磁気デ
イスク１に配備したＰＧヨーク１２によつて構成
される実用新案登録請求の範囲第１項又は第２項
に記載の映像信号処理回路。[Claims for Utility Model Registration] A series of field signals recorded on a pair of signal tracks are continuously recorded from a signal recording medium equipped with a reference signal generator for defining the signal recording start point of concentric signal tracks. In the video signal processing circuit that reproduces the composite video signal and sends it to the subsequent circuit, the composite video signal reproduced from the signal recording medium is passed through a synchronization separation circuit 6 that separates the vertical synchronization signal included in the signal.
, 7, the reference signal obtained from the reference signal generator is connected as a trigger signal to a connected masking circuit 8, and the masking circuit 8 performs the synchronization separation for a predetermined period based on the input time of the trigger signal. A video signal processing circuit characterized in that output signals of circuits 6 and 7 are cut off to create a true vertical synchronization signal and sent to a subsequent circuit. The masking circuit 8 includes a pulse shaping circuit 17 that creates a pulse signal that becomes low level for a predetermined period when a trigger signal is input, and the output signals of the pulse shaping circuit 17 and the vertical synchronization circuits 6 and 7 are connected to each input terminal. The video signal processing circuit according to claim 1, which comprises an AND circuit 18. The video signal processing circuit according to claim 1 or 2, wherein the reference signal generator is constituted by a PG yoke 12 disposed on a magnetic disk 1 serving as a signal recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986196293U JPH0741264Y2 (en) | 1986-12-19 | 1986-12-19 | Video signal processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986196293U JPH0741264Y2 (en) | 1986-12-19 | 1986-12-19 | Video signal processing circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6399483U true JPS6399483U (en) | 1988-06-28 |
| JPH0741264Y2 JPH0741264Y2 (en) | 1995-09-20 |
Family
ID=31154981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986196293U Expired - Lifetime JPH0741264Y2 (en) | 1986-12-19 | 1986-12-19 | Video signal processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741264Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144623U (en) * | 1979-03-31 | 1980-10-17 | ||
| JPS55174725U (en) * | 1979-05-30 | 1980-12-15 | ||
| JPS6183389U (en) * | 1984-11-02 | 1986-06-02 | ||
| JPS61277283A (en) * | 1985-05-31 | 1986-12-08 | Tokyo Electric Co Ltd | Reproducing method for television composite video signal to magnetic disc |
-
1986
- 1986-12-19 JP JP1986196293U patent/JPH0741264Y2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144623U (en) * | 1979-03-31 | 1980-10-17 | ||
| JPS55174725U (en) * | 1979-05-30 | 1980-12-15 | ||
| JPS6183389U (en) * | 1984-11-02 | 1986-06-02 | ||
| JPS61277283A (en) * | 1985-05-31 | 1986-12-08 | Tokyo Electric Co Ltd | Reproducing method for television composite video signal to magnetic disc |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741264Y2 (en) | 1995-09-20 |
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