JPS5467711A - Receiving data signal generator circuit - Google Patents

Receiving data signal generator circuit

Info

Publication number
JPS5467711A
JPS5467711A JP13408677A JP13408677A JPS5467711A JP S5467711 A JPS5467711 A JP S5467711A JP 13408677 A JP13408677 A JP 13408677A JP 13408677 A JP13408677 A JP 13408677A JP S5467711 A JPS5467711 A JP S5467711A
Authority
JP
Japan
Prior art keywords
carrier
circuit
signal
receiving data
receiving
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
JP13408677A
Other languages
Japanese (ja)
Other versions
JPS5823023B2 (en
Inventor
Yoshio Akutsu
Masatoshi Kawashima
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP13408677A priority Critical patent/JPS5823023B2/en
Publication of JPS5467711A publication Critical patent/JPS5467711A/en
Publication of JPS5823023B2 publication Critical patent/JPS5823023B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/066—Carrier recovery circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To prevent noise from being transmitted as receiving data signals by providing a circuit, which detects carrier breaking in a time shorter than the carrier breaking detection time of a carrier detection circuit, in the receiving data signal generator circuit of the MODEM for data communication. CONSTITUTION:After the modulated wave signal from receiving input terminal 1 is received by receiving circuit 2, this modulated wave signal is sent to carrier detector circuit 3, demodulator circuit 4 and the second carrier detector circuit 6, which has a carrier breaking detection time shorter than the carrier breaking detection time of carrier detector circuit 3, respectively. Then, logical operation circuit 5a takes out the carrier detection signal of carrier detector circuit 3 and the DC binary signal taken out from the modulated wave signal by demodulator circuit 4, namely, the receiving data signal and the carrier detection signal of the second carrier detector circuit 6 as an AND of them, and this output is defined as a receiving signal.
JP13408677A 1977-11-10 1977-11-10 Reception data signal generation circuit Expired JPS5823023B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13408677A JPS5823023B2 (en) 1977-11-10 1977-11-10 Reception data signal generation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13408677A JPS5823023B2 (en) 1977-11-10 1977-11-10 Reception data signal generation circuit

Publications (2)

Publication Number Publication Date
JPS5467711A true JPS5467711A (en) 1979-05-31
JPS5823023B2 JPS5823023B2 (en) 1983-05-12

Family

ID=15120077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13408677A Expired JPS5823023B2 (en) 1977-11-10 1977-11-10 Reception data signal generation circuit

Country Status (1)

Country Link
JP (1) JPS5823023B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6239942A (en) * 1985-08-15 1987-02-20 Toyo Commun Equip Co Ltd Modulator and demodulator for data transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6239942A (en) * 1985-08-15 1987-02-20 Toyo Commun Equip Co Ltd Modulator and demodulator for data transmission
JPH0471380B2 (en) * 1985-08-15 1992-11-13 Toyo Communication Equip

Also Published As

Publication number Publication date
JPS5823023B2 (en) 1983-05-12

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