JPS61181217A - Signal delay device - Google Patents

Signal delay device

Info

Publication number
JPS61181217A
JPS61181217A JP60021307A JP2130785A JPS61181217A JP S61181217 A JPS61181217 A JP S61181217A JP 60021307 A JP60021307 A JP 60021307A JP 2130785 A JP2130785 A JP 2130785A JP S61181217 A JPS61181217 A JP S61181217A
Authority
JP
Japan
Prior art keywords
delay
output
pulse
terminal
circuit
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
Application number
JP60021307A
Other languages
Japanese (ja)
Inventor
Tadashi Kaneko
正 金古
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP60021307A priority Critical patent/JPS61181217A/en
Publication of JPS61181217A publication Critical patent/JPS61181217A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To output a delay pulse having less variance in delay time even when it is large by obtaining the delay pulse whose time does not exceed T from a clock having a time width T and triggering an FF at the trailing edge of the said pulse so as to obtain the delay pulse having a time T or over. CONSTITUTION:When a signal having a pulse width T is impressed to a terminal 1 and a start signal is impressed to a terminal 72, an output of a prescribed phase appears at each output terminal of a counter circuit 71, further output terminals (a-f) giving outputs with different delay time from the delay circuit 2 are selected and a delay signal from the terminal (a) is inputted to a clock terminal CL of an FF61 via an inverse circuit 51. When the signal from the terminal (a) falls since a J input of the FF61 goes to H by an output 1 of the counter circuit, the FF61 is inverted and the level of an output 31 goes to H. Then the signal at the terminal (a) falls again when outputs 1, 2 of the counter circuit go to L, H, and then the FF61 is inverted and the output 31 goes to L. This is applied also to output terminals 33, 32.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明はパルス幅以上の遅延時間を簡易正確に得るため
の遅延装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a delay device for simply and accurately obtaining a delay time greater than a pulse width.

[従来の技術] パルス幅Tの信号を遅延素子を使用する遅延回路により
所定時間遅延させる装置は、第3図に示すようになって
いる。第3図Aにおいてlはパルス入力端子、2は遅延
回路で例えばLSIの半導体素子を縦続接続してその中
間接続点から出力3゜4を得ている。第3図Bはタイム
チャー1・で、Pは大カバルス、出力3,4はそれぞれ
遅延時間DI、D2の出力である。出力3の遅延時間D
1はパルス幅T以内で、D2はT以上であるとき、D2
の値にはばらつきが多かった。
[Prior Art] A device for delaying a signal with a pulse width T for a predetermined time by a delay circuit using a delay element is shown in FIG. In FIG. 3A, 1 is a pulse input terminal, 2 is a delay circuit, for example, LSI semiconductor elements are connected in cascade, and an output of 3.degree. 4 is obtained from an intermediate connection point. FIG. 3B shows a time chart 1, P is a large caballus, and outputs 3 and 4 are outputs of delay times DI and D2, respectively. Output 3 delay time D
1 is within the pulse width T and D2 is greater than or equal to T, then D2
There was a lot of variation in the values.

[発明が解決しようとする問題点] 第4図は第3図に示す装置による遅延時間のばらつきを
示す図で、縦軸に遅延装置出力を、横軸に遅延時間りを
採っている。遅延時間りを得ようとした時に生じるばら
つきは、遅延時間りがより長くなるとき比例して大きく
なった。したがって本発明の目的は簡易な構成で遅延時
間りが大きくてもばらつきの少ないパルス遅延装置を提
供することにある。
[Problems to be Solved by the Invention] FIG. 4 is a diagram showing variations in delay time due to the device shown in FIG. 3, with the vertical axis representing the output of the delay device and the horizontal axis representing the delay time. The variation that occurred when attempting to obtain the delay time increased proportionately as the delay time became longer. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a pulse delay device that has a simple configuration and has less variation even when the delay time is large.

[問題点を解決するための手段] 第1図Aは本発明のパルス遅延装置の原理ブロック図を
示す。第1図Aにおいて、1はパルス入力端子、2は遅
延回路、3は出力端子の一方で入力パルス幅以内の遅延
時間を有する出力を得る端子、4は出力端子の他方で入
力パルス幅以上の遅延時間を有する出力を得る端子、5
はパルス後縁検出回路で原パルスからパルス幅以内の遅
延時間(端子3までの時間より短くて良い)を有する端
子から取り出した遅延パルスを例えば位相反転し、その
立上り後縁を検出する回路、6はパルス発生回路で後縁
検出回路5の出力をトリガとして新たに所定の持続時間
のパルスを発生させる回路を示す。
[Means for Solving the Problems] FIG. 1A shows a block diagram of the principle of the pulse delay device of the present invention. In FIG. 1A, 1 is a pulse input terminal, 2 is a delay circuit, 3 is an output terminal that obtains an output with a delay time within the input pulse width, and 4 is the other output terminal, which has a delay time that is longer than the input pulse width. a terminal for obtaining an output with a delay time, 5
is a pulse trailing edge detection circuit, which inverts the phase of a delayed pulse taken out from a terminal having a delay time within the pulse width from the original pulse (may be shorter than the time to terminal 3), and detects the trailing edge of its rising edge; Reference numeral 6 denotes a pulse generation circuit which generates a new pulse of a predetermined duration using the output of the trailing edge detection circuit 5 as a trigger.

第1図Bに示すタイムチャートにおいて、信号5はパル
ス人力1を若干遅延させ(遅延時間D5)位相反転した
もの、信号6は遅延パルス5により発生したパルスを示
す。信号3は遅延時間D3の遅延パルスを示す。
In the time chart shown in FIG. 1B, signal 5 shows a pulse generated by slightly delaying pulse 1 (delay time D5) and inverting the phase, and signal 6 shows a pulse generated by delayed pulse 5. Signal 3 shows a delayed pulse with a delay time D3.

[作用] 信号5の波形の立上りは遅延回路2の端子7における遅
延時間D5より位相反転回路における遅延時間αを経過
した時刻から更に原パルス幅T経過した時刻tにおいて
発生ずる。したがって端子4における出力は時刻tから
発生し、所定幅の遅延パルスとなる。
[Operation] The rise of the waveform of the signal 5 occurs at a time t when the original pulse width T has elapsed from the time when the delay time α in the phase inversion circuit has elapsed from the delay time D5 at the terminal 7 of the delay circuit 2. Therefore, the output at terminal 4 occurs from time t and is a delayed pulse of a predetermined width.

[実施例] 第2図は本発明の実施例を示す図で、遅延量とパルス幅
のそれぞれ異なる3種の遅延パルスを得る装置を示して
いる。第2図Aにおいて、1は幅Tのパルスの入力端子
、2は半導体素子を縦続接続した遅延回路、31,32
.33は遅延パルスの出力端子、41は遅延時間選択切
替スイッチ、51.52,53ば反転切替回路でインバ
ータ回路を介した出力と側路させた出力とを切替え出力
させるものであり、インパーク回路を介した出力は原人
力パルスの後縁の検出を行う。61.62゜63はJK
型ラフリップフロップ所定幅のパルスを新たに発生させ
るもの、71は入力端子1に入力したパルスの計数回路
、72は計数回路71の動作開始信号入力端子を示す。
[Embodiment] FIG. 2 is a diagram showing an embodiment of the present invention, and shows an apparatus for obtaining three types of delayed pulses having different delay amounts and pulse widths. In FIG. 2A, 1 is an input terminal for a pulse of width T, 2 is a delay circuit in which semiconductor elements are connected in cascade, 31, 32
.. 33 is a delay pulse output terminal, 41 is a delay time selection switch, and 51, 52 and 53 are inversion switching circuits that switch output between the output via the inverter circuit and the bypassed output, and an impark circuit. The output through performs the detection of the trailing edge of the human power pulse. 61.62゜63 is JK
71 is a counting circuit for pulses input to the input terminal 1; 72 is an operation start signal input terminal of the counting circuit 71;

出力端子31に対し選択切替スイッチ41は遅延回路2
の端子aを選択しフリップフロンプロ1を使用している
。また出力端子32に対しスイッチ41は遅延回路2の
端子eを選択しフリップフロップ62を使用し、出力端
子33に対しスイッチ41は遅延回路2の端子Cを選択
しフリップフロップ63を使用している。
The selection switch 41 for the output terminal 31 is the delay circuit 2.
Terminal a is selected and Flip Flon Pro 1 is used. Further, for the output terminal 32, the switch 41 selects the terminal e of the delay circuit 2 and uses the flip-flop 62, and for the output terminal 33, the switch 41 selects the terminal C of the delay circuit 2 and uses the flip-flop 63. .

第2図Bにより第2図Aの動作を説明する。パルス幅T
の入力信号が端子1に印加され、動作開始信号が端子7
2に印加されたとき、計数回路71の出力端子1〜4に
は、第2図Bに示す位相の出力が得られる。遅延回路2
の出力端子aは選択回路41を介して反転切替回路51
に致るが、反転されずフリップフロップ61のクロック
入力CLに達する。フリップフロンプロ1のJ入力は計
数回路71の出力1で、K入力は同回路71の出力2で
あるから、フリップフロップ61の出力Qは入力端子2
1のパルスを遅延回路2における端子aまでの量だけ遅
延させ、幅を2Tとしたものである(パルス幅Tまでの
遅延はなされていない)。
The operation of FIG. 2A will be explained with reference to FIG. 2B. Pulse width T
An input signal is applied to terminal 1, and an operation start signal is applied to terminal 7.
2, output terminals 1 to 4 of the counting circuit 71 obtain outputs with a phase shown in FIG. 2B. Delay circuit 2
The output terminal a of is connected to the inversion switching circuit 51 via the selection circuit 41.
However, it reaches the clock input CL of the flip-flop 61 without being inverted. Since the J input of the flip-flop processor 1 is the output 1 of the counting circuit 71 and the K input is the output 2 of the same circuit 71, the output Q of the flip-flop 61 is the input terminal 2.
1 is delayed by the amount up to the terminal a in the delay circuit 2, and the width is set to 2T (the pulse is not delayed up to the pulse width T).

次にフリップフロップ62はクロックCL入力に反転切
替回路52で反転されたeが印加され、J入力は計数回
路71の出力1、K入力は同計数回路の出力3であるか
ら、遅延量は(端子eまでの量→−人カパルス幅T)で
、出力パルス幅は4Tとなっている。同様にフリップフ
ロップ63では遅延量が(端子Cまでの遅延量十人カバ
ルス幅T)で、出力パルス幅は2Tとなっている。
Next, the flip-flop 62 has the clock CL input applied with e inverted by the inversion switching circuit 52, the J input is the output 1 of the counting circuit 71, and the K input is the output 3 of the counting circuit, so the delay amount is ( The output pulse width is 4T. Similarly, in the flip-flop 63, the delay amount is (delay amount up to terminal C, ten-cabarth width T), and the output pulse width is 2T.

反転切替回路51〜53は、図示する位置の代わりに入
力端子1と遅延回路2の間に挿入しても良い。
The inversion switching circuits 51 to 53 may be inserted between the input terminal 1 and the delay circuit 2 instead of the illustrated positions.

以上は遅延回路による遅延信号の後縁の立上りを検出す
るために位相反転回路を使用したが、立下り検出のため
には、位相反転回路以外の公知の回路を使用する。
Although the phase inversion circuit is used above to detect the rising edge of the trailing edge of the signal delayed by the delay circuit, a known circuit other than the phase inversion circuit is used to detect the falling edge.

[発明の効果コ 第5図は本発明による遅延出力のばらつきを第4図と比
較して示す図である。遅延時間が入力パルス幅Tより大
きく遅れる場合、T以内の遅延パルスについて後縁検出
回路による後縁の時刻を基準として、新たに遅延出力の
ばらつきを考えることで済み、図示のように入力パルス
より遅延時間2Tの位置においてもTのばらつきと同様
に少なくできる。
[Effects of the Invention] FIG. 5 is a diagram showing variations in delay output according to the present invention in comparison with FIG. 4. When the delay time lags behind the input pulse width T, it is sufficient to newly consider the variation in the delay output based on the time of the trailing edge detected by the trailing edge detection circuit for the delayed pulse within T, and as shown in the figure, The variation in T can also be reduced at the position of delay time 2T.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の装置の原理ブロックとタイムチャート
、 第2図は本発明の実施例の構成を示す図と動作タイムチ
ャート、 第3図は従来の遅延装置の構成を示す図とタイムチャー
ト、 第4図は第3図の装置による遅延時間のばらつきを示す
図、 第5図は第2図による遅延時間のばらつきを示す図であ
る。 1−パルス入力端子 2−遅延回路 3.4−遅延パルス出力端子 5−パルス後縁検出回路 6−パルス発生回路 特許出願人    富士通株式会社 代理人     弁理士 鈴木栄祐 T12T1 遅延時間 第5図
Fig. 1 is a principle block and time chart of the device of the present invention, Fig. 2 is a diagram showing the configuration of an embodiment of the present invention and an operation time chart, and Fig. 3 is a diagram showing the configuration of a conventional delay device and a time chart. , FIG. 4 is a diagram showing variations in delay time due to the apparatus shown in FIG. 3, and FIG. 5 is a diagram showing variations in delay time according to FIG. 2. 1-Pulse input terminal 2-Delay circuit 3.4-Delayed pulse output terminal 5-Pulse trailing edge detection circuit 6-Pulse generation circuit Patent applicant Fujitsu Limited Agent Patent attorney Eisuke Suzuki T12T1 Delay time Figure 5

Claims (1)

【特許請求の範囲】[Claims] パルス幅Tの信号を遅延素子を使用して所定時間遅延さ
せる装置において、前記所定時間が時間Tを超える値の
場合、原信号からTを超えない遅延パルスを得て、該パ
ルスの後縁の立上りまたは立下り変化をトリガとして所
定の遅延パルスを発生させることを特徴とするパルス遅
延装置。
In a device that delays a signal with a pulse width T for a predetermined time using a delay element, if the predetermined time exceeds the time T, a delayed pulse not exceeding T is obtained from the original signal, and the trailing edge of the pulse is A pulse delay device characterized in that a predetermined delay pulse is generated using a rising or falling change as a trigger.
JP60021307A 1985-02-06 1985-02-06 Signal delay device Pending JPS61181217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60021307A JPS61181217A (en) 1985-02-06 1985-02-06 Signal delay device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60021307A JPS61181217A (en) 1985-02-06 1985-02-06 Signal delay device

Publications (1)

Publication Number Publication Date
JPS61181217A true JPS61181217A (en) 1986-08-13

Family

ID=12051489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60021307A Pending JPS61181217A (en) 1985-02-06 1985-02-06 Signal delay device

Country Status (1)

Country Link
JP (1) JPS61181217A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5841307A (en) * 1995-06-13 1998-11-24 Fujitsu Limited Delay device and delay time measurement device using a ring oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5841307A (en) * 1995-06-13 1998-11-24 Fujitsu Limited Delay device and delay time measurement device using a ring oscillator
US5973507A (en) * 1995-06-13 1999-10-26 Fujitsu Limited Exclusive-or gate for use in delay using transmission gate circuitry

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