JPH0226821U - - Google Patents
Info
- Publication number
- JPH0226821U JPH0226821U JP10489188U JP10489188U JPH0226821U JP H0226821 U JPH0226821 U JP H0226821U JP 10489188 U JP10489188 U JP 10489188U JP 10489188 U JP10489188 U JP 10489188U JP H0226821 U JPH0226821 U JP H0226821U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- level
- comparison circuit
- level comparison
- 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
- 238000001514 detection method Methods 0.000 claims description 10
- 238000012795 verification Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Manipulation Of Pulses (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図はこの考案の一実施例を示すブロツク図
、第２図は第１図中の各部分に発生する信号の一
例を示す波形図、第３図は従来のパルス検出回路
を示すブロツク図である。
図において、１は被測定入力信号、２ａは高ス
レツシヨルドレベル設定回路、２ｂは低スレツシ
ヨルドレベル設定回路、３ａは高スレツシヨルド
レベル信号、３ｂは低スレツシヨルドレベル信号
、４ａは高レベル用比較回路、４ｂは低レベル用
比較回路、５ａは高レベル用検出信号、５ｂは低
レベル用検出思号、６は検出時間設定回路、７は
検出時間設定信号、８は検出回路、９は検定信号
、１０は同期信号出力回路、１１は同期信号であ
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 block diagram showing an embodiment of this invention, Fig. 2 is a waveform diagram showing an example of signals generated in each part in Fig. 1, and Fig. 3 is a block diagram showing a conventional pulse detection circuit. It is. In the figure, 1 is the input signal to be measured, 2a is the high threshold level setting circuit, 2b is the low threshold level setting circuit, 3a is the high threshold level signal, 3b is the low threshold level signal, and 4a is the low threshold level setting circuit. 4b is a comparison circuit for high level, 5a is a detection signal for high level, 5b is a detection symbol for low level, 6 is a detection time setting circuit, 7 is a detection time setting signal, 8 is a detection circuit, 9 is a verification signal, 10 is a synchronization signal output circuit, and 11 is a synchronization signal. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
ベルとを比較する高レベル用比較回路と、上記被
測定入力信号と低レベルのスレツシヨルドレベル
とを比較する低レベル用比較回路と、この低レベ
ル用比較回路の出力を一定時間保持する検出時間
設定回路と、この検出時間設定回路の出力と上記
高レベル用比較回路の出力とが入力され、設定さ
れた一定時間内に上記高レベル用比較回路出力が
入力されない場合は上記検出時間設定回路出力を
通過させる検定回路と、この検定回路の出力を同
期信号として取り出す同期信号出力回路とを備え
たことを特徴とするパルス検出回路。 a high-level comparison circuit that compares the input signal under test with a high-level threshold level; a low-level comparison circuit that compares the input signal under test with a low-level threshold level; A detection time setting circuit holds the output of the high level comparison circuit for a certain period of time, and the output of this detection time setting circuit and the output of the high level comparison circuit are input, and the high level comparison circuit A pulse detection circuit comprising: a verification circuit that passes the output of the detection time setting circuit when no output is input; and a synchronization signal output circuit that extracts the output of the verification circuit as a synchronization signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10489188U JPH0226821U (en) | 1988-08-10 | 1988-08-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10489188U JPH0226821U (en) | 1988-08-10 | 1988-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226821U true JPH0226821U (en) | 1990-02-21 |
Family
ID=31337015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10489188U Pending JPH0226821U (en) | 1988-08-10 | 1988-08-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226821U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05281291A (en) * | 1992-03-31 | 1993-10-29 | Osaka Gas Co Ltd | Method and apparatus for diagnosing deterioration of electronic circuit and method and apparatus for detecting abnormal waveform therefor |
-
1988
- 1988-08-10 JP JP10489188U patent/JPH0226821U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05281291A (en) * | 1992-03-31 | 1993-10-29 | Osaka Gas Co Ltd | Method and apparatus for diagnosing deterioration of electronic circuit and method and apparatus for detecting abnormal waveform therefor |
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