JPS53110408A - Detection circuit for digital signal - Google Patents

Detection circuit for digital signal

Info

Publication number
JPS53110408A
JPS53110408A JP2480277A JP2480277A JPS53110408A JP S53110408 A JPS53110408 A JP S53110408A JP 2480277 A JP2480277 A JP 2480277A JP 2480277 A JP2480277 A JP 2480277A JP S53110408 A JPS53110408 A JP S53110408A
Authority
JP
Japan
Prior art keywords
digital signal
detection circuit
signal
bpf
discriminating
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
JP2480277A
Other languages
Japanese (ja)
Inventor
Kazuto Hirose
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2480277A priority Critical patent/JPS53110408A/en
Publication of JPS53110408A publication Critical patent/JPS53110408A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To decrease the number of usage of the digital filters and to increase the number of multiplication of lines for the receivers, by discriminating the presence of signal through the comparison of the output of BPF of the PB signal receiver with the threshold value.
JP2480277A 1977-03-09 1977-03-09 Detection circuit for digital signal Pending JPS53110408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2480277A JPS53110408A (en) 1977-03-09 1977-03-09 Detection circuit for digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2480277A JPS53110408A (en) 1977-03-09 1977-03-09 Detection circuit for digital signal

Publications (1)

Publication Number Publication Date
JPS53110408A true JPS53110408A (en) 1978-09-27

Family

ID=12148316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2480277A Pending JPS53110408A (en) 1977-03-09 1977-03-09 Detection circuit for digital signal

Country Status (1)

Country Link
JP (1) JPS53110408A (en)

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