JPS6172974U - - Google Patents
Info
- Publication number
- JPS6172974U JPS6172974U JP15691884U JP15691884U JPS6172974U JP S6172974 U JPS6172974 U JP S6172974U JP 15691884 U JP15691884 U JP 15691884U JP 15691884 U JP15691884 U JP 15691884U JP S6172974 U JPS6172974 U JP S6172974U
- Authority
- JP
- Japan
- Prior art keywords
- vertical synchronization
- synchronization signal
- integrating
- comparing
- pseudo vertical
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Television Signal Processing For Recording (AREA)
Description
第1図は、この考案の実施例である擬似垂直同
期信号発生回路を示す図である。第2図は、この
考案の実施例である擬似垂直同期信号発生回路の
各部の信号波形を示す図である。第3図は、従来
の映像再生装置における垂直同期信号つけかえ部
分のブロツク図である。第4図は、従来の擬似垂
直同期信号発生器の回路図である。第5図は、通
常再生時のビデオヘツド切換信号と垂直同期信号
の関係を示す図である。
図において、5は擬似垂直同期信号発生器、6
はスイツチ手段、10は映像再生装置、11はテ
レビジヨン受信機、20は電源、25はEx−N
ORゲート、31,35,36,37,38,3
9,43,44,45,46,47,49,50
,52,53,54は抵抗器、32はコンデンサ
、33,34,40,41,42,48,51,
55はトランジスタである。なお、各図中同一符
号は同一または相当部分を示す。
FIG. 1 is a diagram showing a pseudo vertical synchronization signal generation circuit which is an embodiment of this invention. FIG. 2 is a diagram showing signal waveforms at various parts of a pseudo vertical synchronization signal generation circuit according to an embodiment of the invention. FIG. 3 is a block diagram of a vertical synchronization signal replacement section in a conventional video playback device. FIG. 4 is a circuit diagram of a conventional pseudo vertical synchronization signal generator. FIG. 5 is a diagram showing the relationship between the video head switching signal and the vertical synchronization signal during normal playback. In the figure, 5 is a pseudo vertical synchronization signal generator, 6
is a switch means, 10 is a video playback device, 11 is a television receiver, 20 is a power supply, 25 is an Ex-N
OR gate, 31, 35, 36, 37, 38, 3
9,43,44,45,46,47,49,50
, 52, 53, 54 are resistors, 32 are capacitors, 33, 34, 40, 41, 42, 48, 51,
55 is a transistor. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
同期信号でつけかえるための擬似垂直同期信号発
生回路であつて、 ビデオヘツド切換信号を積分する積分手段と、 前記積分手段の出力を予め定める第1の基準電
位と比較する第1の比較手段と、 前記積分手段の出力を予め定める第2の基準電
位と比較する第2の比較手段と、 前記第1および第2の比較手段の出力の不一致
部分を検出する検出手段とを備えたことを特徴と
する擬似垂直同期信号発生回路。[Claims for Utility Model Registration] A pseudo vertical synchronization signal generation circuit for replacing a vertical synchronization signal in a video reproducing device with a pseudo vertical synchronization signal, comprising: an integrating means for integrating a video head switching signal; and an integrating means for integrating a video head switching signal; a first comparing means for comparing the output with a predetermined first reference potential; a second comparing means for comparing the output of the integrating means with a predetermined second reference potential; and the first and second comparisons. 1. A pseudo vertical synchronization signal generation circuit comprising: detection means for detecting a mismatched portion of the outputs of the means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15691884U JPH0349504Y2 (en) | 1984-10-16 | 1984-10-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15691884U JPH0349504Y2 (en) | 1984-10-16 | 1984-10-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6172974U true JPS6172974U (en) | 1986-05-17 |
JPH0349504Y2 JPH0349504Y2 (en) | 1991-10-22 |
Family
ID=30714924
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15691884U Expired JPH0349504Y2 (en) | 1984-10-16 | 1984-10-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0349504Y2 (en) |
-
1984
- 1984-10-16 JP JP15691884U patent/JPH0349504Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0349504Y2 (en) | 1991-10-22 |
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