JPS54153509A - Branch insertion system to direct relaying - Google Patents

Branch insertion system to direct relaying

Info

Publication number
JPS54153509A
JPS54153509A JP6258878A JP6258878A JPS54153509A JP S54153509 A JPS54153509 A JP S54153509A JP 6258878 A JP6258878 A JP 6258878A JP 6258878 A JP6258878 A JP 6258878A JP S54153509 A JPS54153509 A JP S54153509A
Authority
JP
Japan
Prior art keywords
signal
shift
insertion system
sfo3
output
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
JP6258878A
Other languages
Japanese (ja)
Inventor
Hajime Masuda
Takuro Oguchi
Nijiro Momo
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6258878A priority Critical patent/JPS54153509A/en
Publication of JPS54153509A publication Critical patent/JPS54153509A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/10—Intermediate station arrangements, e.g. for branching, for tapping-off

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To avoid the effect to other line, by using the output of oscillation, when the reception signal from one direction decreases to a given value. CONSTITUTION:When the input signal f3 from the No. 1 direction is a given value or less, the output of the detector DET1 is below the reference value and the switch SW1 is selected to the b side. The shift oscillator SFO3 oscillates the same continuous waves as the shift signal fs. Accordingly, the signal of the shift oscillator SFO3 shifts the signal f2 from the No. 2 direction in the mixer MIX3 to produce f1' and is delivered as the signal f1' toward the No. 3 direction. Thus, the signal from the No. 2 to No. 3 is kept with the shift oscillator and no effect is caused with the vanishing of the input signal toward the No. 1 direction.
JP6258878A 1978-05-25 1978-05-25 Branch insertion system to direct relaying Pending JPS54153509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6258878A JPS54153509A (en) 1978-05-25 1978-05-25 Branch insertion system to direct relaying

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6258878A JPS54153509A (en) 1978-05-25 1978-05-25 Branch insertion system to direct relaying

Publications (1)

Publication Number Publication Date
JPS54153509A true JPS54153509A (en) 1979-12-03

Family

ID=13204622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6258878A Pending JPS54153509A (en) 1978-05-25 1978-05-25 Branch insertion system to direct relaying

Country Status (1)

Country Link
JP (1) JPS54153509A (en)

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