JPS61184374U - - Google Patents
Info
- Publication number
- JPS61184374U JPS61184374U JP6748985U JP6748985U JPS61184374U JP S61184374 U JPS61184374 U JP S61184374U JP 6748985 U JP6748985 U JP 6748985U JP 6748985 U JP6748985 U JP 6748985U JP S61184374 U JPS61184374 U JP S61184374U
- Authority
- JP
- Japan
- Prior art keywords
- period
- vertical oscillation
- television
- signal
- television receiver
- 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
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
Description
第１図はこの考案の一実施例であるテレビジヨ
ン受信機のテレビジヨン信号検出回路を示すブロ
ツク構成図、第２図は従来のテレビジヨン受信機
のテレビジヨン信号検出回路を示すブロツク構成
図である。
図において、９……ＩＣ（集積回路）、１０…
…発振回路、１１……セラミツク共振子、１２…
…入力端子、１３……カウンタ回路、１４……判
別回路、１５……出力端子である。
FIG. 1 is a block configuration diagram showing a television signal detection circuit of a television receiver which is an embodiment of this invention, and FIG. 2 is a block configuration diagram showing a television signal detection circuit of a conventional television receiver. be. In the figure, 9...IC (integrated circuit), 10...
...Oscillation circuit, 11... Ceramic resonator, 12...
...input terminal, 13...counter circuit, 14...discrimination circuit, 15...output terminal.
Claims (1)
リーラン周波数を持つ垂直発振回路を備えたテレ
ビジヨン受信機において、垂直発振信号の周期を
計測する手段と、この垂直発振信号の周期があら
かじめ設定された周期と一致するか否かを判別す
る手段とを設けたことを特徴とするテレビジヨン
受信機のテレビジヨン信号検出回路。 In a television receiver equipped with a vertical oscillation circuit having a free run frequency different from the vertical synchronization frequency of the television signal, there is provided a means for measuring the period of the vertical oscillation signal, and a period in which the period of the vertical oscillation signal is a preset period. 1. A television signal detection circuit for a television receiver, comprising means for determining whether or not they match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6748985U JPS61184374U (en) | 1985-05-08 | 1985-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6748985U JPS61184374U (en) | 1985-05-08 | 1985-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61184374U true JPS61184374U (en) | 1986-11-17 |
Family
ID=30601361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6748985U Pending JPS61184374U (en) | 1985-05-08 | 1985-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61184374U (en) |
-
1985
- 1985-05-08 JP JP6748985U patent/JPS61184374U/ja active Pending
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