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）。
FIG. 1 is a block diagram of the main part of an embodiment of the present invention, FIG. 2 is a block diagram of the main part of a conventional example, and FIGS. 3 and 4 are diagrams showing the pull-in range of the PLL. DESCRIPTION OF SYMBOLS 1... Synchronous detection circuit, 2... Voltage controlled oscillator, 3... Video intermediate frequency amplification circuit, 4... APC detection circuit, 7... First transistor (switching circuit).
Claims (1)
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
。[Scope of Claim for Utility Model Registration] In video equipment equipped with a PLL fully synchronous detection type video detection circuit and an auto-search function that automatically selects channels, depending on whether or not the auto-search period is in progress, A video device comprising a switching circuit for switching a time constant of an APC filter of the video detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989104920U JPH0635550Y2 (en) | 1989-09-06 | 1989-09-06 | Video equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989104920U JPH0635550Y2 (en) | 1989-09-06 | 1989-09-06 | Video equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0344926U true JPH0344926U (en) | 1991-04-25 |
| JPH0635550Y2 JPH0635550Y2 (en) | 1994-09-14 |
Family
ID=31653699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989104920U Expired - Lifetime JPH0635550Y2 (en) | 1989-09-06 | 1989-09-06 | Video equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635550Y2 (en) |
-
1989
- 1989-09-06 JP JP1989104920U patent/JPH0635550Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0635550Y2 (en) | 1994-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6193025U (en) | ||
| JPS62112214U (en) | ||
| JPH0316719U (en) | ||
| JPS6358304U (en) | ||
| JPH0257678U (en) | ||
| JPH01115341U (en) | ||
| JPH0357678U (en) | ||
| JPH01151678U (en) | ||
| JPS61197770U (en) | ||
| JPS62155587U (en) | ||
| JPS6264039U (en) | ||
| JPH03121724U (en) | ||
| JPH0635550Y2 (en) | Video equipment | |
| JPS62161472U (en) | ||
| JPH0377562U (en) | ||
| JPS6338466U (en) | ||
| JPS643384U (en) | ||
| JPS6347632U (en) | ||
| JPH0382939U (en) | ||
| JPS58144929U (en) | PLL synthesizer tuner | |
| JPH02141142U (en) | ||
| JPS63533U (en) | ||
| JPS63106274U (en) | ||
| EP0862338A3 (en) | Chroma signal recording circuit | |
| JPS63176934U (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |