JPS586434U - Waveform shaping circuit - Google Patents

Waveform shaping circuit

Info

Publication number
JPS586434U
JPS586434U JP9898381U JP9898381U JPS586434U JP S586434 U JPS586434 U JP S586434U JP 9898381 U JP9898381 U JP 9898381U JP 9898381 U JP9898381 U JP 9898381U JP S586434 U JPS586434 U JP S586434U
Authority
JP
Japan
Prior art keywords
comparator
reference voltage
pcm signal
input terminal
waveform shaping
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
Application number
JP9898381U
Other languages
Japanese (ja)
Other versions
JPH0119470Y2 (en
Inventor
直史 安達
Original Assignee
アイワ株式会社
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 アイワ株式会社 filed Critical アイワ株式会社
Priority to JP9898381U priority Critical patent/JPS586434U/en
Publication of JPS586434U publication Critical patent/JPS586434U/en
Application granted granted Critical
Publication of JPH0119470Y2 publication Critical patent/JPH0119470Y2/ja
Granted legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図、第２ａ図、第２ｂ図はＰＣＭ伝送におけ　　゛
るデジタル処理を示す信号波形図、第３図は本考案によ
るＰＣＭ用波形整形回路の典型的実施例の回路図、第４
ａ図、第４ｂ図は本考案のＰＣＭ用波形整形回路の動作
を説明する信号波形図である。Figures 1, 2a, and 2b are signal waveform diagrams showing digital processing in PCM transmission, Figure 3 is a circuit diagram of a typical embodiment of the PCM waveform shaping circuit according to the present invention, and Figure 4
Figures a and 4b are signal waveform diagrams illustrating the operation of the PCM waveform shaping circuit of the present invention.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ＰＣＭ信号の信号波形を整形するために比較器を用いた
波形整形回路において、一方の入力端子にＰＣＭ信号が
与えられ他方の入力端子に基準電圧Ｅ２が与えられる第
１比較器と、一方の入力端子に前記ＰＣＭ信号が与えら
れ他方の入力端子に前記基準電圧Ｅ２より大きい基準電
圧Ｅ１が与えられる第２比較器と、一方の入力端子に前
記ＰＣＭ信号が与えられ他方の入力端子に前記基準電圧
Ｅ２より小さい基準電圧Ｅ３が与えられる第３比較器と
、該各比較器の出力信号変化を検出して前記各比較器に
入力されたＰＣＭ信号の電圧レベルがＥｌからＥ２に達
する時間Ｔ１とＥ２からＥ３に達する時間Ｔ２を測定す
る装置と、前記Ｔ１とＴ２との時間差を測定して該時間
差に基づき前記各基準電圧Ｅｌ、Ｅ２．Ｅ３を可変制御
する装置とを具備し、前記Ｔ１とＴ２との時間差が常に
所定値となるように各基準電圧Ｅｌ、　Ｅ２゜Ｅ３を可
変することにより前記基準電圧Ｅ２を前記ＰＣＭ信号の
スライス電圧レベルとして第１比較器より波形整形出力
を得るようにしたことを特徴とする波形整形回路。A waveform shaping circuit using a comparator to shape the signal waveform of a PCM signal includes a first comparator to which the PCM signal is applied to one input terminal and a reference voltage E2 to the other input terminal; a second comparator whose terminal is supplied with the PCM signal and whose other input terminal is supplied with a reference voltage E1 greater than the reference voltage E2; and whose one input terminal is supplied with the PCM signal and whose other input terminal is supplied with the reference voltage. a third comparator to which a reference voltage E3 smaller than E2 is applied, and times T1 and E2 for the voltage level of the PCM signal input to each comparator to reach E2 from El by detecting a change in the output signal of each comparator. to E3; and a device that measures the time difference between T1 and T2, and adjusts the reference voltages El, E2, . . . based on the time difference. and a device for variably controlling E3, and by varying each reference voltage El, E2°E3 so that the time difference between T1 and T2 is always a predetermined value, the reference voltage E2 is changed to the slice voltage of the PCM signal. A waveform shaping circuit characterized in that a waveform shaping output is obtained from a first comparator as a level.
JP9898381U 1981-07-02 1981-07-02 Waveform shaping circuit Granted JPS586434U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9898381U JPS586434U (en) 1981-07-02 1981-07-02 Waveform shaping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9898381U JPS586434U (en) 1981-07-02 1981-07-02 Waveform shaping circuit

Publications (2)

Publication Number Publication Date
JPS586434U true JPS586434U (en) 1983-01-17
JPH0119470Y2 JPH0119470Y2 (en) 1989-06-06

Family

ID=29893730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9898381U Granted JPS586434U (en) 1981-07-02 1981-07-02 Waveform shaping circuit

Country Status (1)

Country Link
JP (1) JPS586434U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0263869U (en) * 1988-11-02 1990-05-14

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508454A (en) * 1973-05-21 1975-01-28
JPS5527714A (en) * 1978-08-17 1980-02-28 Toshiba Corp Duty cycle control circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508454A (en) * 1973-05-21 1975-01-28
JPS5527714A (en) * 1978-08-17 1980-02-28 Toshiba Corp Duty cycle control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0263869U (en) * 1988-11-02 1990-05-14

Also Published As

Publication number Publication date
JPH0119470Y2 (en) 1989-06-06

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