JPS54117613A - Parallel operating system of radio communicaton unit - Google Patents

Parallel operating system of radio communicaton unit

Info

Publication number
JPS54117613A
JPS54117613A JP2462978A JP2462978A JPS54117613A JP S54117613 A JPS54117613 A JP S54117613A JP 2462978 A JP2462978 A JP 2462978A JP 2462978 A JP2462978 A JP 2462978A JP S54117613 A JPS54117613 A JP S54117613A
Authority
JP
Japan
Prior art keywords
output
units
converted
supplied
radio
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
JP2462978A
Other languages
Japanese (ja)
Inventor
Masahiko Niwa
Takeya Tanaka
Minoru Kidena
Toshio Kawaguchi
Yutaka Imahori
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
Japan Broadcasting Corp
Original Assignee
Fujitsu Ltd
Nippon Hoso Kyokai NHK
Japan Broadcasting 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 Fujitsu Ltd, Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Fujitsu Ltd
Priority to JP2462978A priority Critical patent/JPS54117613A/en
Publication of JPS54117613A publication Critical patent/JPS54117613A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Landscapes

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

Abstract

PURPOSE:To prevent the system breakdown at a trouble time to improve reliability by synthesizing output phases of a current machine and a spare machine after synchronizing them with each other. CONSTITUTION:Output signals from signal source 13 are supplied to radio communication units 11 and 12 in parallel, and output carrier frequencies of units 11 and 12 are inptted to frequency converters 15 and 20 and carrier reproducing devices 14 and 18 respectively. Output carriers of devices 14 and 18 are converted in 16 and 19 by the frequency from reference oscillator 17, and conversion outputs are supplied to converters 15 and 20 respectively and are so converted that output carriers of units 11 and 12 may become equal to the reference wave of oscillator 17. As a result, outputs made of the same phase are synthesized in 21 and are transmitted. Now, the fixed phase difference in two systems is adjustable by phase shifter 22.
JP2462978A 1978-03-03 1978-03-03 Parallel operating system of radio communicaton unit Pending JPS54117613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2462978A JPS54117613A (en) 1978-03-03 1978-03-03 Parallel operating system of radio communicaton unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2462978A JPS54117613A (en) 1978-03-03 1978-03-03 Parallel operating system of radio communicaton unit

Publications (1)

Publication Number Publication Date
JPS54117613A true JPS54117613A (en) 1979-09-12

Family

ID=12143423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2462978A Pending JPS54117613A (en) 1978-03-03 1978-03-03 Parallel operating system of radio communicaton unit

Country Status (1)

Country Link
JP (1) JPS54117613A (en)

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