JPH0361636U - - Google Patents
Info
- Publication number
- JPH0361636U JPH0361636U JP12329689U JP12329689U JPH0361636U JP H0361636 U JPH0361636 U JP H0361636U JP 12329689 U JP12329689 U JP 12329689U JP 12329689 U JP12329689 U JP 12329689U JP H0361636 U JPH0361636 U JP H0361636U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- chroma signal
- delay circuit
- reproduced chroma
- subtraction 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000001934 delay Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本考案の一実施例の電気的構成を示す
ブロツク線図、第２図は磁気テープに記録された
映像信号と磁気テープより再生された再生クロマ
信号との位相関係を示すための説明図、第３図は
従来技術の電気的構成を示すブロツク線図である
。
１１…磁気テープ、１２Ｌ，１２Ｒ…磁気ヘツ
ド、１５…色信号変換回路、１５ａ…再生クロマ
信号、１６…遅延回路、１７…減算回路、２１…
トラツキング制御部、２２…サーボ制御回路、２
４…キヤプスタンモータ。
FIG. 1 is a block diagram showing the electrical configuration of an embodiment of the present invention, and FIG. 2 is a block diagram showing the phase relationship between the video signal recorded on the magnetic tape and the reproduced chroma signal reproduced from the magnetic tape. The explanatory diagram, FIG. 3, is a block diagram showing the electrical configuration of the prior art. DESCRIPTION OF SYMBOLS 11... Magnetic tape, 12L, 12R... Magnetic head, 15... Color signal conversion circuit, 15a... Reproduction chroma signal, 16... Delay circuit, 17... Subtraction circuit, 21...
Tracking control section, 22... Servo control circuit, 2
4... Capstan motor.
Claims (1)
再生クロマ信号を、１水平走査期間遅延させる遅
延回路と、 この遅延回路の出力と前記再生クロマ信号との
差分を演算する減算回路と、 キヤプスタンモータの回転位相の制御を行うサ
ーボ制御回路の制御位相を変更させることにより
、前記減算回路の出力値を最小にさせるトラツキ
ング制御部とを備えたことを特徴とするオートト
ラツキング装置。[Claims for Utility Model Registration] A delay circuit that delays a reproduced chroma signal detected by a magnetic head and subjected to frequency conversion by one horizontal scanning period, and a difference between the output of this delay circuit and the reproduced chroma signal. An automatic apparatus comprising: a subtraction circuit; and a tracking control section that minimizes the output value of the subtraction circuit by changing the control phase of a servo control circuit that controls the rotational phase of a capstan motor. tracking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989123296U JPH079228Y2 (en) | 1989-10-20 | 1989-10-20 | Auto tracking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989123296U JPH079228Y2 (en) | 1989-10-20 | 1989-10-20 | Auto tracking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0361636U true JPH0361636U (en) | 1991-06-17 |
| JPH079228Y2 JPH079228Y2 (en) | 1995-03-06 |
Family
ID=31671281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989123296U Expired - Fee Related JPH079228Y2 (en) | 1989-10-20 | 1989-10-20 | Auto tracking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079228Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0244558A (en) * | 1988-08-05 | 1990-02-14 | Matsushita Electric Ind Co Ltd | Rotating head type magnetic recording/reproducing device |
-
1989
- 1989-10-20 JP JP1989123296U patent/JPH079228Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0244558A (en) * | 1988-08-05 | 1990-02-14 | Matsushita Electric Ind Co Ltd | Rotating head type magnetic recording/reproducing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH079228Y2 (en) | 1995-03-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |