JPS6461155A - Optical reception circuit - Google Patents

Optical reception circuit

Info

Publication number
JPS6461155A
JPS6461155A JP62217652A JP21765287A JPS6461155A JP S6461155 A JPS6461155 A JP S6461155A JP 62217652 A JP62217652 A JP 62217652A JP 21765287 A JP21765287 A JP 21765287A JP S6461155 A JPS6461155 A JP S6461155A
Authority
JP
Japan
Prior art keywords
signal
comparison
input
reception signal
comparator
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
JP62217652A
Other languages
Japanese (ja)
Other versions
JPH07118726B2 (en
Inventor
Masao Hagiwara
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP62217652A priority Critical patent/JPH07118726B2/en
Publication of JPS6461155A publication Critical patent/JPS6461155A/en
Publication of JPH07118726B2 publication Critical patent/JPH07118726B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To discriminate the content of logic level independently of an offset voltage of a reception signal, by giving respectively an integration processing signal of a reception signal to a 1st comparison input terminal and a feedback signal to its own comparison output reception signal to a 2nd comparison input terminal so as to apply level comparison of the input signals. CONSTITUTION:By the input of a reception signal S1, a signal S2 fed to an inverting input of the comparator 13 via an integration circuit 12 becomes the signal of the mode as shown in figure (b) by the repetition of charge/ discharge based on the integration time constant of the signal S1. Then a comparison output S4 by other comparator 13 is fed back positively to the signal S1 and the signal S3 fed to the noninverting input of the comparator 13 is the signal of the mode as shown in figure (c). Thus, a signal representing ground level or power voltage Vcc level in the mode as shown in figure (d) is outputted corresponding to the content of the logic level of the reception signal S1 as the comparison output S4 between the signals S2 and S3.
JP62217652A 1987-08-31 1987-08-31 Comparison device Expired - Lifetime JPH07118726B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62217652A JPH07118726B2 (en) 1987-08-31 1987-08-31 Comparison device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62217652A JPH07118726B2 (en) 1987-08-31 1987-08-31 Comparison device

Publications (2)

Publication Number Publication Date
JPS6461155A true JPS6461155A (en) 1989-03-08
JPH07118726B2 JPH07118726B2 (en) 1995-12-18

Family

ID=16707608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62217652A Expired - Lifetime JPH07118726B2 (en) 1987-08-31 1987-08-31 Comparison device

Country Status (1)

Country Link
JP (1) JPH07118726B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04180315A (en) * 1990-11-15 1992-06-26 Nec Corp Photodetecting circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120748A (en) * 1976-04-05 1977-10-11 Nec Corp Pulse detection circuit
JPS54118148A (en) * 1978-03-07 1979-09-13 Nec Corp Comparator circuit
JPS59148458A (en) * 1983-02-14 1984-08-25 Mitsubishi Electric Corp Optical receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120748A (en) * 1976-04-05 1977-10-11 Nec Corp Pulse detection circuit
JPS54118148A (en) * 1978-03-07 1979-09-13 Nec Corp Comparator circuit
JPS59148458A (en) * 1983-02-14 1984-08-25 Mitsubishi Electric Corp Optical receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04180315A (en) * 1990-11-15 1992-06-26 Nec Corp Photodetecting circuit

Also Published As

Publication number Publication date
JPH07118726B2 (en) 1995-12-18

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