JPS57183158A - Automatic threshold value control circuit - Google Patents

Automatic threshold value control circuit

Info

Publication number
JPS57183158A
JPS57183158A JP6703181A JP6703181A JPS57183158A JP S57183158 A JPS57183158 A JP S57183158A JP 6703181 A JP6703181 A JP 6703181A JP 6703181 A JP6703181 A JP 6703181A JP S57183158 A JPS57183158 A JP S57183158A
Authority
JP
Japan
Prior art keywords
level
voltage
signal
reception
transmission
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
Application number
JP6703181A
Other languages
Japanese (ja)
Inventor
Kuniyoshi Konishi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6703181A priority Critical patent/JPS57183158A/en
Publication of JPS57183158A publication Critical patent/JPS57183158A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To obtain a necessary reception discrimination level without the presence of a bipolar signal on a transmission line by setting a threshold level in terms of direct current. CONSTITUTION:A DC component cutting capacitor 302 is provided between a transmission-side transformer 301 and a reception-side transformer 302, and a reception part 313 is provided with a choke coil 308 for cutting a bipolar signal, resistances 309 and 310 for voltage division, and a constant voltage source 311 which generates a voltage having the same level with the peak value E0 of a signal level used for transmission. Then, a threshold voltage for signal discrimination is supplied from the connection point between the voltage-dividing resistances 309 and 310 to the ''-'' termials of comparators 305 and 306. For the purpose, the winding ratio of the primary and secondary sides of a transformer 102 is set to 1:2, and consequently a reception discrimination level is set a half as high as an input signal level without reference to the presence of a bipolar signal on a transmission line 314.
JP6703181A 1981-05-06 1981-05-06 Automatic threshold value control circuit Pending JPS57183158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6703181A JPS57183158A (en) 1981-05-06 1981-05-06 Automatic threshold value control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6703181A JPS57183158A (en) 1981-05-06 1981-05-06 Automatic threshold value control circuit

Publications (1)

Publication Number Publication Date
JPS57183158A true JPS57183158A (en) 1982-11-11

Family

ID=13333094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6703181A Pending JPS57183158A (en) 1981-05-06 1981-05-06 Automatic threshold value control circuit

Country Status (1)

Country Link
JP (1) JPS57183158A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010838A (en) * 1983-06-29 1985-01-21 Matsushita Electric Ind Co Ltd Transmission and reception network system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010838A (en) * 1983-06-29 1985-01-21 Matsushita Electric Ind Co Ltd Transmission and reception network system

Similar Documents

Publication Publication Date Title
US4205269A (en) Remote control variable attenuation device for an antenna amplifier
DE3464830D1 (en) Flyback converter device
JPS57183158A (en) Automatic threshold value control circuit
ES8608247A1 (en) Power transfer circuit.
ATE171575T1 (en) CONTROL AMPLIFIER FOR CONTROLLING A HIGH RESISTANCE LOW VOLTAGE SOURCE
JPS56115023A (en) Automatic threshold level controlling circuit
US4714870A (en) Arrangement for controlling an A.C. voltage
GB2035753A (en) Monitoring telephone line current
JPS5687115A (en) Switching power source
GB1533197A (en) D.c.voltage converters
JPS572165A (en) High voltage generating circuit
JPS56115024A (en) Automatic threshold level setting circuit
GB1108332A (en) Improvements relating to an apparatus for producing a regulatable rectified output from an alternating current
JPS6450727A (en) Power transmission device for home bus system
EP0059537A3 (en) Switching circuit
JPS55100068A (en) Rectifying source circuit
FR2258743A1 (en) Pulse width modulator and demodulator - has modulator with first integrator for input voltage, followed by threshold cct.
JPS6439294A (en) Control method for multi-voltage generator
JPS5765962A (en) Horizontal deflecting circuit
ES8307426A1 (en) Supply circuit included in a dc-magnetized hybrid transformer.
SU951594A1 (en) Mains voltage converter
JPS5676619A (en) Automatic gain control system
JPS5597182A (en) Switching regulator
JPS57203113A (en) Automatic voltage adjuster
GB956986A (en) Improvements in or relating to electric inverter circuits