JPS6236477U - - Google Patents
Info
- Publication number
- JPS6236477U JPS6236477U JP12651285U JP12651285U JPS6236477U JP S6236477 U JPS6236477 U JP S6236477U JP 12651285 U JP12651285 U JP 12651285U JP 12651285 U JP12651285 U JP 12651285U JP S6236477 U JPS6236477 U JP S6236477U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output signal
- level
- comparator
- 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
Links
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図は本考案の一実施例の回路図。第２図は
本考案の他の実施例の回路図。第３図は従来の波
形成形回路の回路図。
１……コンデンサ、２……コンパレータ、３…
…ローパスフイルタ、５……アンド回路、７……
トライステートバツフア。
FIG. 1 is a circuit diagram of an embodiment of the present invention. FIG. 2 is a circuit diagram of another embodiment of the present invention. FIG. 3 is a circuit diagram of a conventional waveform shaping circuit. 1...Capacitor, 2...Comparator, 3...
...Low pass filter, 5...AND circuit, 7...
Tri-state battle.
Claims (1)
信号とし、入力信号のレベルと前記基準信号のレ
ベルとを比較するコンパレータを備えた波形成形
回路において、前記入力信号が供給されていない
期間、出力信号のレベルを一定レベルに保持する
保持手段を備えたことを特徴とする波形成形回路
。 (2) 保持手段は入力信号が供給されていないこ
とを検出した信号およびコンパレータの出力信号
を入力する論理積演算回路であることを特徴とす
る実用新案登録請求の範囲第１項記載の波形成形
回路。 (3) 保持手段はコンパレータとローパスフイル
タとの間に接続されかつ入力信号が供給されてい
ないときに出力端が高インピーダンス状態になる
トライステートバツフアと、ローパスフイルタの
入力端と基準電位点との間に接続された抵抗とか
らなることを特徴とする実用新案登録請求の範囲
第１項記載の波形成形回路。[Claims for Utility Model Registration] (1) In a waveform shaping circuit that uses an output signal passed through a low-pass filter as a reference signal and is equipped with a comparator that compares the level of an input signal with the level of the reference signal, A waveform shaping circuit characterized by comprising a holding means for holding the level of an output signal at a constant level during a period when the output signal is not supplied. (2) The waveform shape according to claim 1 of the utility model registration claim, wherein the holding means is an AND operation circuit which inputs a signal detected that no input signal is supplied and an output signal of a comparator. circuit. (3) The holding means includes a tri-state buffer that is connected between the comparator and the low-pass filter and whose output terminal is in a high impedance state when no input signal is supplied, and a tri-state buffer that is connected between the input terminal of the low-pass filter and a reference potential point. A waveform shaping circuit according to claim 1, characterized in that the circuit comprises a resistor connected between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12651285U JPS6236477U (en) | 1985-08-21 | 1985-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12651285U JPS6236477U (en) | 1985-08-21 | 1985-08-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6236477U true JPS6236477U (en) | 1987-03-04 |
Family
ID=31020380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12651285U Pending JPS6236477U (en) | 1985-08-21 | 1985-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6236477U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5894112A (en) * | 1981-11-27 | 1983-06-04 | Akai Electric Co Ltd | Data extracting circuit |
| JPS5939145A (en) * | 1982-08-30 | 1984-03-03 | Hitachi Ltd | Data discriminating circuit |
-
1985
- 1985-08-21 JP JP12651285U patent/JPS6236477U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5894112A (en) * | 1981-11-27 | 1983-06-04 | Akai Electric Co Ltd | Data extracting circuit |
| JPS5939145A (en) * | 1982-08-30 | 1984-03-03 | Hitachi Ltd | Data discriminating circuit |
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