JPS54104767A - Signal selection unit - Google Patents

Signal selection unit

Info

Publication number
JPS54104767A
JPS54104767A JP1172478A JP1172478A JPS54104767A JP S54104767 A JPS54104767 A JP S54104767A JP 1172478 A JP1172478 A JP 1172478A JP 1172478 A JP1172478 A JP 1172478A JP S54104767 A JPS54104767 A JP S54104767A
Authority
JP
Japan
Prior art keywords
signal
switching
signals
selection unit
signal selection
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
JP1172478A
Other languages
Japanese (ja)
Inventor
Katsutoshi Nakada
Nobuyasu Itou
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1172478A priority Critical patent/JPS54104767A/en
Publication of JPS54104767A publication Critical patent/JPS54104767A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electronic Switches (AREA)
  • Logic Circuits (AREA)

Abstract

PURPOSE: To perform signal selection, without the condition that no output is connected to any signal source even for a moment.
CONSTITUTION: The selection switch Ij is switched with the signals cj and rj and the confirmation signal aj is produced. The circuits 21 ... 2n take the logical sum of the switching confirmation signals a of n-1 sets, and the outputs y1 ... yn of each switch I are added 3 and output is made. When the signal cj is selected, the switching confirmation signal aj corresponding is operated as the off control signal for all less than rj and all except Ij are turned off. Since the outputs y1 ... yn are further added 3 and outputted, no moment is available when all the input signals are off and the signal is switched, and no switching is made without the presence of the switching confirmation signal.
COPYRIGHT: (C)1979,JPO&Japio
JP1172478A 1978-02-03 1978-02-03 Signal selection unit Pending JPS54104767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1172478A JPS54104767A (en) 1978-02-03 1978-02-03 Signal selection unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1172478A JPS54104767A (en) 1978-02-03 1978-02-03 Signal selection unit

Publications (1)

Publication Number Publication Date
JPS54104767A true JPS54104767A (en) 1979-08-17

Family

ID=11785977

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1172478A Pending JPS54104767A (en) 1978-02-03 1978-02-03 Signal selection unit

Country Status (1)

Country Link
JP (1) JPS54104767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789966A (en) * 1996-09-18 1998-08-04 International Business Machines Corporation Distributed multiplexer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5789966A (en) * 1996-09-18 1998-08-04 International Business Machines Corporation Distributed multiplexer

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