JPH0332835U - - Google Patents
Info
- Publication number
- JPH0332835U JPH0332835U JP9036089U JP9036089U JPH0332835U JP H0332835 U JPH0332835 U JP H0332835U JP 9036089 U JP9036089 U JP 9036089U JP 9036089 U JP9036089 U JP 9036089U JP H0332835 U JPH0332835 U JP H0332835U
- Authority
- JP
- Japan
- Prior art keywords
- period
- pulse train
- input means
- train signal
- input
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 1
Description
図面は本考案に関するパルス幅計測装置の一実
施例を示し、第１図は回路構成図、第２図はイン
ターフエースに入力するパルス列信号の波形図、
第３図はフリーランニングカウンタの動作説明図
、第４図は従来の計測説明図である。
主要部分を示す図面の符号の説明、１……マイ
クロコンピユータ、２，３……入力端子、５……
フリーランニングカウンタ、６……ＲＡＭ、７…
…演算装置。
The drawings show an embodiment of the pulse width measuring device according to the present invention, in which Fig. 1 is a circuit configuration diagram, Fig. 2 is a waveform diagram of a pulse train signal input to an interface,
FIG. 3 is an explanatory diagram of the operation of the free running counter, and FIG. 4 is an explanatory diagram of conventional measurement. Explanation of symbols in the drawings showing main parts: 1...Microcomputer, 2, 3...Input terminal, 5...
Free running counter, 6...RAM, 7...
...Arithmetic device.
Claims (1)
周期を計測するパルス幅計測装置であつて、パル
ス列信号の正信号を入力する第１入力手段と、パ
ルス列信号を反転させて入力する第２入力手段と
、上記両入力手段から有効エツジのパルス列信号
が１周期に順番に１個づづ割込入力するフリーラ
ンニングカウンタと、両入力手段からの割込入力
毎にフリーランニングカウンタの値を順次記憶す
る記憶媒体と、記憶媒体に記憶されるフリーラン
ニングカウンタの前回の値から今回の値を減算し
てハイ区間の周期又はロウ区間の周期を計測する
計測手段とを備えて構成されることを特徴とする
パルス幅計測装置。 A pulse width measuring device for measuring the period of a high section or the period of a low section of a pulse train signal, comprising: a first input means for inputting a positive signal of the pulse train signal; and a second input means for inputting an inverted pulse train signal. , a free-running counter to which one effective edge pulse train signal is input as an interrupt in sequence from both of the input means in one cycle; and a storage medium that sequentially stores the value of the free-running counter for each interrupt input from both the input means. and a measuring means for subtracting the current value from the previous value of a free running counter stored in a storage medium to measure the period of the high section or the period of the low section. Width measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989090360U JP2584990Y2 (en) | 1989-07-31 | 1989-07-31 | Pulse width measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989090360U JP2584990Y2 (en) | 1989-07-31 | 1989-07-31 | Pulse width measurement device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332835U true JPH0332835U (en) | 1991-03-29 |
| JP2584990Y2 JP2584990Y2 (en) | 1998-11-11 |
Family
ID=31639886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989090360U Expired - Lifetime JP2584990Y2 (en) | 1989-07-31 | 1989-07-31 | Pulse width measurement device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2584990Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009175052A (en) * | 2008-01-25 | 2009-08-06 | Advantest Corp | Measuring device, measuring method, and testing device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101907659B1 (en) * | 2018-06-12 | 2018-10-12 | 엘아이지넥스원 주식회사 | Apparatus for measuring pulse width using amplitude and differentiation |
| KR101944424B1 (en) * | 2018-06-12 | 2019-01-30 | 엘아이지넥스원 주식회사 | Method for measuring pulse width using differentiation |
| KR101963892B1 (en) * | 2018-09-03 | 2019-04-01 | 엘아이지넥스원 주식회사 | Differential Signal Detecting Method of Digital Receiver |
| KR101963891B1 (en) * | 2018-09-03 | 2019-04-01 | 엘아이지넥스원 주식회사 | Differential Signal Detecting Apparatus and Digital Receiver using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6078361A (en) * | 1983-10-05 | 1985-05-04 | Mitsubishi Electric Corp | Pulse signal measuring device |
-
1989
- 1989-07-31 JP JP1989090360U patent/JP2584990Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6078361A (en) * | 1983-10-05 | 1985-05-04 | Mitsubishi Electric Corp | Pulse signal measuring device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009175052A (en) * | 2008-01-25 | 2009-08-06 | Advantest Corp | Measuring device, measuring method, and testing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2584990Y2 (en) | 1998-11-11 |
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