JPS5539419A - Supergroup translating system - Google Patents

Supergroup translating system

Info

Publication number
JPS5539419A
JPS5539419A JP11218978A JP11218978A JPS5539419A JP S5539419 A JPS5539419 A JP S5539419A JP 11218978 A JP11218978 A JP 11218978A JP 11218978 A JP11218978 A JP 11218978A JP S5539419 A JPS5539419 A JP S5539419A
Authority
JP
Japan
Prior art keywords
filter
carrier
wave
supergroup
nci
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
JP11218978A
Other languages
Japanese (ja)
Inventor
Yoshinobu Yago
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP11218978A priority Critical patent/JPS5539419A/en
Publication of JPS5539419A publication Critical patent/JPS5539419A/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
    • H04J1/08—Arrangements for combining channels

Landscapes

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

Abstract

PURPOSE:To secure a selection of the modulating carrier to the n and n+1 times as much as conventional by adopting the 2-step modulation system to the 1st and 3rd supergroup translations, thus miniaturizing each filter. CONSTITUTION:Basic supergroup p of 312-552kHz receives modulation at 1st modilator 9 and via 1st carrier wave nci which is obtained by giving n multiplication to carrier ci through multiplication circuit 17. And only upper side band wave nci+p is selected through filter 10a to be sent to 2nd modulator 11, where the modulation is given to wave nic+p sent for filter 10 via 2nd carrier (n+1)ci to send out the modulated wave to filter 12. Thus only the lower side band is selected through filter 12 to feature the same frequency band as conventional owing to (n+1)ci- (nci+p)=ci-p. The demodulation is carried out via filters 13 and 16, demodulators 14 and 15, etc. As a result, the filter can be miniaturized, realizing a highly economical system comstitution.
JP11218978A 1978-09-14 1978-09-14 Supergroup translating system Pending JPS5539419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11218978A JPS5539419A (en) 1978-09-14 1978-09-14 Supergroup translating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11218978A JPS5539419A (en) 1978-09-14 1978-09-14 Supergroup translating system

Publications (1)

Publication Number Publication Date
JPS5539419A true JPS5539419A (en) 1980-03-19

Family

ID=14580477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11218978A Pending JPS5539419A (en) 1978-09-14 1978-09-14 Supergroup translating system

Country Status (1)

Country Link
JP (1) JPS5539419A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166856A (en) * 1982-03-27 1983-10-03 Fujitsu Ltd Receiving device
JP2009526192A (en) * 2006-02-13 2009-07-16 ダンフォス・アクチ−セルスカブ Cooling equipment
US8689582B2 (en) 2007-06-19 2014-04-08 Danfoss A/S Refrigeration system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58166856A (en) * 1982-03-27 1983-10-03 Fujitsu Ltd Receiving device
JP2009526192A (en) * 2006-02-13 2009-07-16 ダンフォス・アクチ−セルスカブ Cooling equipment
JP4896993B2 (en) * 2006-02-13 2012-03-14 ダンフォス・アクチ−セルスカブ Cooling equipment
US8689582B2 (en) 2007-06-19 2014-04-08 Danfoss A/S Refrigeration system

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