JPS5689148A - Radio device of switching without instantaneous break - Google Patents

Radio device of switching without instantaneous break

Info

Publication number
JPS5689148A
JPS5689148A JP16564279A JP16564279A JPS5689148A JP S5689148 A JPS5689148 A JP S5689148A JP 16564279 A JP16564279 A JP 16564279A JP 16564279 A JP16564279 A JP 16564279A JP S5689148 A JPS5689148 A JP S5689148A
Authority
JP
Japan
Prior art keywords
pulse
frame synchronizing
frame
pulses
circuit
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
JP16564279A
Other languages
Japanese (ja)
Other versions
JPS6228903B2 (en
Inventor
Hachihei Kurematsu
Kazuo Ogawa
Eiji Suzuki
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 JP16564279A priority Critical patent/JPS5689148A/en
Publication of JPS5689148A publication Critical patent/JPS5689148A/en
Publication of JPS6228903B2 publication Critical patent/JPS6228903B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Abstract

PURPOSE:To prevent frame step out of the receiving side due to transmission switching, by supplying frame synchronizing pulses of the current transmitter to the frame synchronizing pulse generating circuit of the stand-by transmitter as reset pulses. CONSTITUTION:Frame synchronizing pulses of prescribed periods obtained from frame pulse generating circuits 7 and 7' are inserted to prescribed empty parts of the base band pulse train after speed conversion to perform multiplex synchronization. The frame synchronizing pulse obtained in transmission system 1 is given to circuit 7' in stand-by system 2 through signal line 8 as a reset pulse. When receiving this pulse, circuit 7' generates a frame synchronizing pulse which coincides with the frame synchronizing pulse of the current system in respect to time. Consequently, since frame synchronizing pulses coincide always with each other in both systems, step out of the receiving side due to transmission switching does not occur.
JP16564279A 1979-12-21 1979-12-21 Radio device of switching without instantaneous break Granted JPS5689148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16564279A JPS5689148A (en) 1979-12-21 1979-12-21 Radio device of switching without instantaneous break

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16564279A JPS5689148A (en) 1979-12-21 1979-12-21 Radio device of switching without instantaneous break

Publications (2)

Publication Number Publication Date
JPS5689148A true JPS5689148A (en) 1981-07-20
JPS6228903B2 JPS6228903B2 (en) 1987-06-23

Family

ID=15816233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16564279A Granted JPS5689148A (en) 1979-12-21 1979-12-21 Radio device of switching without instantaneous break

Country Status (1)

Country Link
JP (1) JPS5689148A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4574377A (en) * 1982-11-26 1986-03-04 Fujitsu Limited Synchronization method and apparatus in redundant time-division-multiple-access communication equipment
US6256291B1 (en) 1967-04-27 2001-07-03 Fujitsu Limited Method of switching between redundant routes in communication system devoid of redundant transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6256291B1 (en) 1967-04-27 2001-07-03 Fujitsu Limited Method of switching between redundant routes in communication system devoid of redundant transmission
US4574377A (en) * 1982-11-26 1986-03-04 Fujitsu Limited Synchronization method and apparatus in redundant time-division-multiple-access communication equipment

Also Published As

Publication number Publication date
JPS6228903B2 (en) 1987-06-23

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