JPH0344926U - - Google Patents
Info
- Publication number
- JPH0344926U JPH0344926U JP1989104920U JP10492089U JPH0344926U JP H0344926 U JPH0344926 U JP H0344926U JP 1989104920 U JP1989104920 U JP 1989104920U JP 10492089 U JP10492089 U JP 10492089U JP H0344926 U JPH0344926 U JP H0344926U
- Authority
- JP
- Japan
- Prior art keywords
- video
- auto
- detection circuit
- switching
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Description
第１図は本考案の一実施例の要部のブロツク図
、第２図は従来例の要部のブロツク図、第３図お
よび第４図はＰＬＬの引き込み範囲を示す図であ
る。 １……同期検波回路、２……電圧制御型発振器
、３……映像中間周波増幅回路、４……ＡＰＣ検
波回路、７……第１トランジスタ（切換回路）。
、第２図は従来例の要部のブロツク図、第３図お
よび第４図はＰＬＬの引き込み範囲を示す図であ
る。 １……同期検波回路、２……電圧制御型発振器
、３……映像中間周波増幅回路、４……ＡＰＣ検
波回路、７……第１トランジスタ（切換回路）。
Claims (1)
- 【実用新案登録請求の範囲】 ＰＬＬ完全同期検波方式の映像検波回路を備え
るとともに、自動的に選局を行うオートサーチ機
能を備える映像機器において、 オートサーチ期間中であるか否かに応じて、前
記映像検波回路のＡＰＣフイルタの時定数を切換
える切換回路を設けたことを特徴とする映像機器
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989104920U JPH0635550Y2 (ja) | 1989-09-06 | 1989-09-06 | 映像機器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989104920U JPH0635550Y2 (ja) | 1989-09-06 | 1989-09-06 | 映像機器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0344926U true JPH0344926U (ja) | 1991-04-25 |
| JPH0635550Y2 JPH0635550Y2 (ja) | 1994-09-14 |
Family
ID=31653699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989104920U Expired - Lifetime JPH0635550Y2 (ja) | 1989-09-06 | 1989-09-06 | 映像機器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635550Y2 (ja) |
-
1989
- 1989-09-06 JP JP1989104920U patent/JPH0635550Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0635550Y2 (ja) | 1994-09-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |