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
Landscapes
- Manipulation Of Pulses (AREA)
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 apparatus, measuring method and test apparatus |
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 |
| KR101963891B1 (en) * | 2018-09-03 | 2019-04-01 | 엘아이지넥스원 주식회사 | Differential Signal Detecting Apparatus and Digital Receiver using the same |
| KR101963892B1 (en) * | 2018-09-03 | 2019-04-01 | 엘아이지넥스원 주식회사 | Differential Signal Detecting Method of Digital Receiver |
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 apparatus, measuring method and test apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2584990Y2 (en) | 1998-11-11 |
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