JPS60144365U - phase detection circuit - Google Patents
phase detection circuitInfo
- Publication number
- JPS60144365U JPS60144365U JP1984031332U JP3133284U JPS60144365U JP S60144365 U JPS60144365 U JP S60144365U JP 1984031332 U JP1984031332 U JP 1984031332U JP 3133284 U JP3133284 U JP 3133284U JP S60144365 U JPS60144365 U JP S60144365U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- clock run
- teletext
- phase detection
- run
- 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
Landscapes
- Television Systems (AREA)
- Manipulation Of Pulses (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は文字放送受信装置を説明する波形図、第２図は
サンプリングクロック再生を説明するブロック図、第３
図は本考案の位相検出回路に係る一実施例を示す回路図
、第４図は第３図に示す実・ 施例の各部の説明する波
形図、第５図は本考案の他の実施例を示すブロック図で
ある。Figure 1 is a waveform diagram explaining the teletext receiver, Figure 2 is a block diagram explaining sampling clock regeneration, and Figure 3 is a waveform diagram explaining the teletext receiver.
The figure is a circuit diagram showing one embodiment of the phase detection circuit of the present invention, Figure 4 is a waveform diagram explaining each part of the embodiment shown in Figure 3, and Figure 5 is another embodiment of the present invention. FIG.
Claims (1)
放送信号抽出手段と、 この文字放送信号抽出手段から出力される文字放送信号
からサンプリングロック再生の基準となるクロックラン
イン信号をゲートするクロックランインゲート信号を供
給するゲート信号発生手段と、 このゲート信号発生手段から供給されるクロックランイ
ンゲート信号によって前記文字放送信号をゲートして得
られたクロックランイン信号を計数して、該クロックラ
ンイン信号とクロックランインゲート信号の位相を検出
する位相検出手段とを具備したことを特徴とする位相検
出回路。[Claims for Utility Model Registration] Teletext signal extraction means for extracting a teletext signal superimposed on a composite video signal, and a clock serving as a reference for sampling lock reproduction from the teletext signal output from the teletext signal extraction means. gate signal generation means for supplying a clock run-in gate signal for gating the run-in signal; and a clock run-in signal obtained by gating the teletext signal with the clock run-in gate signal supplied from the gate signal generation means. 1. A phase detection circuit comprising: phase detection means for counting the clock run-in signal and the clock run-in gate signal to detect the phases of the clock run-in signal and the clock run-in gate signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984031332U JPS60144365U (en) | 1984-03-06 | 1984-03-06 | phase detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984031332U JPS60144365U (en) | 1984-03-06 | 1984-03-06 | phase detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60144365U true JPS60144365U (en) | 1985-09-25 |
Family
ID=30531846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984031332U Pending JPS60144365U (en) | 1984-03-06 | 1984-03-06 | phase detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60144365U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0546186U (en) * | 1991-04-22 | 1993-06-18 | 三洋電機株式会社 | Teletext playback device |
| WO2007052675A1 (en) * | 2005-11-02 | 2007-05-10 | Matsushita Electric Industrial Co., Ltd. | Text broadcast judging circuit |
-
1984
- 1984-03-06 JP JP1984031332U patent/JPS60144365U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0546186U (en) * | 1991-04-22 | 1993-06-18 | 三洋電機株式会社 | Teletext playback device |
| WO2007052675A1 (en) * | 2005-11-02 | 2007-05-10 | Matsushita Electric Industrial Co., Ltd. | Text broadcast judging circuit |
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