JPH01175029U - - Google Patents
Info
- Publication number
- JPH01175029U JPH01175029U JP7207388U JP7207388U JPH01175029U JP H01175029 U JPH01175029 U JP H01175029U JP 7207388 U JP7207388 U JP 7207388U JP 7207388 U JP7207388 U JP 7207388U JP H01175029 U JPH01175029 U JP H01175029U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- resistor
- detection comparator
- threshold detection
- variable threshold
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Manipulation Of Pulses (AREA)
Description
第１図は本考案の一実施例になるしきい値可変
型検波コンパレータの回路図、第２図は第１図の
回路が適用された赤外線受信器の回路ブロツク図
、第３図は従来のしきい値可変型検波コンパレー
タの回路図を夫々示す。
ＰＤ……ホトダイオード、Ｃ……コンデンサ、
Ｒ１〜Ｒ３……抵抗、Ｑ１〜Ｑ１０……トランジ
スタ。
Fig. 1 is a circuit diagram of a variable threshold detection comparator which is an embodiment of the present invention, Fig. 2 is a circuit block diagram of an infrared receiver to which the circuit of Fig. 1 is applied, and Fig. 3 is a circuit diagram of a conventional infrared receiver. The circuit diagrams of variable threshold detection comparators are shown. PD...Photodiode, C...Capacitor,
R1 to R3 ...resistors, Q1 to Q10 ...transistors.
Claims (1)
るコンデンサの充電電位をしきい値とするしきい
値可変型検波コンパレータにおいて、 該コンデンサの容量値を小さくし、相対的に該
抵抗の抵抗値を大きくした事を特徴とするしきい
値可変型検波コンパレータ。[Claim for Utility Model Registration] In a variable threshold detection comparator in which the threshold is the charged potential of a capacitor in a time constant circuit consisting of a capacitor and a resistor, the capacitance value of the capacitor is made small and the resistor is relatively A variable threshold detection comparator characterized by a large resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207388U JPH01175029U (en) | 1988-05-31 | 1988-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207388U JPH01175029U (en) | 1988-05-31 | 1988-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01175029U true JPH01175029U (en) | 1989-12-13 |
Family
ID=31297251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7207388U Pending JPH01175029U (en) | 1988-05-31 | 1988-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01175029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006117834A1 (en) * | 2005-04-25 | 2006-11-09 | Renesas Technology Corp. | Semiconductor device and ic card |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811330B2 (en) * | 1975-04-11 | 1983-03-02 | フルカワコウギヨウ カブシキガイシヤ | zenkōshinkirikaeyou jidōkuratsuchisouchi |
| JPS6086911A (en) * | 1983-10-18 | 1985-05-16 | Fujitsu Ltd | Automatic thereshold value control system |
-
1988
- 1988-05-31 JP JP7207388U patent/JPH01175029U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811330B2 (en) * | 1975-04-11 | 1983-03-02 | フルカワコウギヨウ カブシキガイシヤ | zenkōshinkirikaeyou jidōkuratsuchisouchi |
| JPS6086911A (en) * | 1983-10-18 | 1985-05-16 | Fujitsu Ltd | Automatic thereshold value control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006117834A1 (en) * | 2005-04-25 | 2006-11-09 | Renesas Technology Corp. | Semiconductor device and ic card |