JPS524720A - Two-ways constant current circuit - Google Patents

Two-ways constant current circuit

Info

Publication number
JPS524720A
JPS524720A JP8119675A JP8119675A JPS524720A JP S524720 A JPS524720 A JP S524720A JP 8119675 A JP8119675 A JP 8119675A JP 8119675 A JP8119675 A JP 8119675A JP S524720 A JPS524720 A JP S524720A
Authority
JP
Japan
Prior art keywords
ways
constant current
current circuit
make
line
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
JP8119675A
Other languages
Japanese (ja)
Other versions
JPS572219B2 (en
Inventor
Takao Hayashi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8119675A priority Critical patent/JPS524720A/en
Publication of JPS524720A publication Critical patent/JPS524720A/en
Publication of JPS572219B2 publication Critical patent/JPS572219B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H04L25/4923—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using ternary codes

Abstract

PURPOSE:To make the absolute value of the current level of a bipolar signal constant with no respect to the length of a line, make the whole circuit economical and reduce the size thereof in a communication line.
JP8119675A 1975-07-01 1975-07-01 Two-ways constant current circuit Granted JPS524720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8119675A JPS524720A (en) 1975-07-01 1975-07-01 Two-ways constant current circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8119675A JPS524720A (en) 1975-07-01 1975-07-01 Two-ways constant current circuit

Publications (2)

Publication Number Publication Date
JPS524720A true JPS524720A (en) 1977-01-14
JPS572219B2 JPS572219B2 (en) 1982-01-14

Family

ID=13739710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8119675A Granted JPS524720A (en) 1975-07-01 1975-07-01 Two-ways constant current circuit

Country Status (1)

Country Link
JP (1) JPS524720A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6397045A (en) * 1986-10-13 1988-04-27 Toyo Commun Equip Co Ltd Data transmission line driver
JPH03243040A (en) * 1990-02-21 1991-10-30 Anritsu Corp Bidirectional current control circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS511889A (en) * 1974-06-20 1976-01-09 Yokogawa Electric Works Ltd NISENSHIKI SHINGODENSOHOSHIKI

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS511889A (en) * 1974-06-20 1976-01-09 Yokogawa Electric Works Ltd NISENSHIKI SHINGODENSOHOSHIKI

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6397045A (en) * 1986-10-13 1988-04-27 Toyo Commun Equip Co Ltd Data transmission line driver
JPH03243040A (en) * 1990-02-21 1991-10-30 Anritsu Corp Bidirectional current control circuit

Also Published As

Publication number Publication date
JPS572219B2 (en) 1982-01-14

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