JPS5445519A - Conversion unit for multiplex modulation signal - Google Patents

Conversion unit for multiplex modulation signal

Info

Publication number
JPS5445519A
JPS5445519A JP11207377A JP11207377A JPS5445519A JP S5445519 A JPS5445519 A JP S5445519A JP 11207377 A JP11207377 A JP 11207377A JP 11207377 A JP11207377 A JP 11207377A JP S5445519 A JPS5445519 A JP S5445519A
Authority
JP
Japan
Prior art keywords
filter
frequency
charp
fed
pulses
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
JP11207377A
Other languages
Japanese (ja)
Other versions
JPS5719620B2 (en
Inventor
Koji Takaragawa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP11207377A priority Critical patent/JPS5445519A/en
Publication of JPS5445519A publication Critical patent/JPS5445519A/en
Publication of JPS5719620B2 publication Critical patent/JPS5719620B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • H04J4/005—Transmultiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To enable to perform light weight, by using elastic surface wave charp filter 12, and the pulses in agreement with the syncronizing pulses are second elastic surface wave charp filter, replacing the difference of delay time into frequency differnce in real time and by making manufacturing essir. CONSTITUTION:The time sharing multiplex input signal is fed to the first elastic surface wave charp filter 12, and the pulses in agreement with the swncronizing pulses are produced with the pulse generator 13, and they are fed to the second elastic wave charp filter 14. Further, frequency conversion is made with the mixing circuit 15,and it is converted into the frequency division multiplex signal via LPF or BPR 16. In the charp filter, the output is delayed in proportional to the frequency component the filter 14 outputs high frequency component with the time elasped from the pulse time point fed to the filter 14. On the other hand,since channel signal is fed in order to the filter 12, frequency conversion 15 is made with higher frequency mor to the channel signals fed later and the frequency more to the channel signals fed later and the frequency division multiplex signal can be obtained.
JP11207377A 1977-09-16 1977-09-16 Conversion unit for multiplex modulation signal Granted JPS5445519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11207377A JPS5445519A (en) 1977-09-16 1977-09-16 Conversion unit for multiplex modulation signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11207377A JPS5445519A (en) 1977-09-16 1977-09-16 Conversion unit for multiplex modulation signal

Publications (2)

Publication Number Publication Date
JPS5445519A true JPS5445519A (en) 1979-04-10
JPS5719620B2 JPS5719620B2 (en) 1982-04-23

Family

ID=14577385

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11207377A Granted JPS5445519A (en) 1977-09-16 1977-09-16 Conversion unit for multiplex modulation signal

Country Status (1)

Country Link
JP (1) JPS5445519A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214649A2 (en) * 1985-09-10 1987-03-18 Nec Corporation FDM-TDM transmultiplexing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214649A2 (en) * 1985-09-10 1987-03-18 Nec Corporation FDM-TDM transmultiplexing system

Also Published As

Publication number Publication date
JPS5719620B2 (en) 1982-04-23

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