JPS55115754A - Output selection circuit - Google Patents

Output selection circuit

Info

Publication number
JPS55115754A
JPS55115754A JP2292279A JP2292279A JPS55115754A JP S55115754 A JPS55115754 A JP S55115754A JP 2292279 A JP2292279 A JP 2292279A JP 2292279 A JP2292279 A JP 2292279A JP S55115754 A JPS55115754 A JP S55115754A
Authority
JP
Japan
Prior art keywords
gate
output
rom
output selection
selection 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.)
Pending
Application number
JP2292279A
Other languages
Japanese (ja)
Inventor
Takeo Sato
Mitsuhiro Matsue
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 JP2292279A priority Critical patent/JPS55115754A/en
Publication of JPS55115754A publication Critical patent/JPS55115754A/en
Pending 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

PURPOSE:To perform the output selection by using ROM for the selective condition forming circuit and corresponding the selection signal inputted to ROM to the address, in the output selection circuit of duplicated cyclic data transmission unit. CONSTITUTION:Assuming that the both A and B systems are normal, the gate of the system A is open to the output and the data for the system A is present. In this state, if a failure is taken place to the system A and one of the selective conditions is ON, since the input address of ROM23 of the system A is changed, the output of ROM23 of the system A is ''0'' to close the gate of the gate 27 of the system A. ROM24 of the system B opens the gate of the gate 28 of the system B and the gate of the system is outputted to the output OUT if no failure in the system. This selective operation can be programmed in ROM depending on the selection signal and the priority.
JP2292279A 1979-02-28 1979-02-28 Output selection circuit Pending JPS55115754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2292279A JPS55115754A (en) 1979-02-28 1979-02-28 Output selection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2292279A JPS55115754A (en) 1979-02-28 1979-02-28 Output selection circuit

Publications (1)

Publication Number Publication Date
JPS55115754A true JPS55115754A (en) 1980-09-05

Family

ID=12096129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2292279A Pending JPS55115754A (en) 1979-02-28 1979-02-28 Output selection circuit

Country Status (1)

Country Link
JP (1) JPS55115754A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129855A (en) * 1982-01-27 1983-08-03 Nec Corp Deciding circuit for pulse pattern normalcy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129855A (en) * 1982-01-27 1983-08-03 Nec Corp Deciding circuit for pulse pattern normalcy

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