JPS62293840A - Output selection circuit - Google Patents

Output selection circuit

Info

Publication number
JPS62293840A
JPS62293840A JP13738686A JP13738686A JPS62293840A JP S62293840 A JPS62293840 A JP S62293840A JP 13738686 A JP13738686 A JP 13738686A JP 13738686 A JP13738686 A JP 13738686A JP S62293840 A JPS62293840 A JP S62293840A
Authority
JP
Japan
Prior art keywords
output
circuit
circuits
normal
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
JP13738686A
Other languages
Japanese (ja)
Inventor
Atsushi Takemura
竹村　敦史
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
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 filed Critical NEC Corp
Priority to JP13738686A priority Critical patent/JPS62293840A/en
Publication of JPS62293840A publication Critical patent/JPS62293840A/en
Pending legal-status Critical Current

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  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To obtain plural series selection circuits with high reliability by switching the power supply of an output circuit and selecting a normal signal among plural series so as to keep a prescribed reliability independently of the increase in the number of the output circuits. CONSTITUTION:The titled circuit consists of output circuits 11, 12, a selection circuit 2 and a control circuit 3, and the output circuits 11, 12, output respectively signals a1, a2 representing its normality/abnormity. The control circuit 3 receives the signals a1, a2 to discriminate a normal output circuit to supply a power supply bi to a normal output circuit bi (i=1, 2) and in receiving the power supplies b1, b2, the outputs circuits 11, 12 output signals c1, c2. The outputted signal c1 or c2 is outputted as an output signal c0 by the selection circuit 2. When both the output circuits b1, b2 are normal, the control circuit 3 supplies power to any of them.

Description

【発明の詳細な説明】 ３、発明の詳細な説明 〔産業上の利用分野〕 本発明は出力選択回路に関する。[Detailed description of the invention] 3. Detailed description of the invention [Industrial application field] The present invention relates to an output selection circuit.

〔従来の技術〕[Conventional technology]

従来、複数系列化を図り、複数系列のうち正常な系列を
選択して高信頼度化を図ることを目的とした出力選択回
路では、選択回路において、−項目ｉσリレー接点等に
より出力を切替えていた。Conventionally, in output selection circuits that aim to increase reliability by selecting a normal series from multiple series, outputs are switched using -item iσ relay contacts, etc. in the selection circuit. Ta.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来の出力選択回路は、１項目毎切苔えるため
に、切替えるためのリレー等が出力回路数だけ必要とな
り、本来、複数系列化として、そのうちの正常なものを
選択して切替えることにより回路の高信頼度化を図って
いたにもかかわらず、出力回路数が多くなると、信頼度
が回路数に比例して劣化するという欠点がある。In the conventional output selection circuit described above, each item can be switched, so relays, etc. for switching are required for the number of output circuits. Originally, it is possible to select a normal one of them as a multiple series and switch it. Despite efforts to improve the reliability of the circuit, there is a drawback that as the number of output circuits increases, the reliability deteriorates in proportion to the number of circuits.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の出力選択回路は、複数系列の出力回路と、各出
力回路からその正常／異常を示す信号を入力して正常な
出力回路を判断し、正常な出力回路の１つに、出力信号
を出力するための電源を供給する制御回路と、出力回路
の出力信号を出力する選択回路を有する。The output selection circuit of the present invention determines a normal output circuit by inputting a plurality of series of output circuits and a signal indicating its normality/abnormality from each output circuit, and selects an output signal from one of the normal output circuits. It has a control circuit that supplies power for output, and a selection circuit that outputs the output signal of the output circuit.

すなわち、本発明は、複数系列化した出力回路の切替を
、選択回路ではなく、制御回路により出力回路への電源
供給を切替えることにより行なうものであり、これによ
り出力回路の増加にかかわらず一定の信頼度を保つこと
ができる。That is, in the present invention, switching between multiple series of output circuits is performed by switching the power supply to the output circuits not by a selection circuit but by a control circuit. Reliability can be maintained.

〔実施例〕〔Example〕

次に、木発１ｐｆｆＪの実施例について図面を参照して
説明する。Next, an embodiment of Kibatsu 1pffJ will be described with reference to the drawings.

第１図は本発明の出力選択回路の一実施例のブロック図
である。FIG. 1 is a block diagram of an embodiment of the output selection circuit of the present invention.

本実施例は、出力回路’ｌ　＋１２と選択回路２と制御
回路３で構成されている。This embodiment is composed of an output circuit 'l+12, a selection circuit 2, and a control circuit 3.

出力回路’ｌ　＋１２はその正常／異常を示す信号ｄｌ
　＋ａ２をそれぞれ出力している。制御回路３はこれら
信号ａｌ　＋ａ２を入力して正常な出力回路を判断し、
正常な出力回路ｂｉ（ｉ＝１．２）に電源ｂ１を供給す
る。出力回路１．．１２は電源ｂ！　、ｂ２が供給され
ると、出力信号Ｃ，、Ｃ２を出力する。Output circuit 'l +12 is a signal dl indicating its normality/abnormality.
+a2 is output respectively. The control circuit 3 inputs these signals al + a2 and determines the normal output circuit,
Power supply b1 is supplied to the normal output circuit bi (i=1.2). Output circuit 1. ．． 12 is power supply b! , b2 are supplied, output signals C, , C2 are output.

出力された出力信号Ｃ１またはＣ２は選択回路２により
出力信号Ｃ０として出力される。なお、出力回路す、　
、ｂ２とも正常な場合、制御回路３はいずれか一方に電
源を供給することになる。The output signal C1 or C2 is output by the selection circuit 2 as an output signal C0. In addition, the output circuit
, b2 are both normal, the control circuit 3 supplies power to either one.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、出力回路のｉｔｔ源供給
をｖＪ替え、複数系列のうち正常な信号を選択すること
により、出力回路の増加にかかわらず、一定の信頼度を
保ちつつ高信頼度の複数系列選択回路を実現することを
可能とする効果がある。As explained above, the present invention changes the itt source supply of the output circuit to vJ and selects a normal signal from among multiple series, thereby maintaining a certain level of reliability and achieving high reliability regardless of the increase in the number of output circuits. This has the effect of making it possible to realize a multiple series selection circuit.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の出力選択回路の一実施例のブロック図
である。 １、．１２・・・出力回路。 ２・・・選択回路。 ３・・・制御回路。 ｂｌ、ｂ２・・・電源供給信号、 ａｌ　＋ａ２・・・正常／異常を示す信号、Ｃ，、Ｃ，
、Ｃ２・・・出力信号。FIG. 1 is a block diagram of an embodiment of the output selection circuit of the present invention. 1. 12... Output circuit. 2...Selection circuit. 3...Control circuit. bl, b2...Power supply signal, al+a2...Signal indicating normality/abnormality, C,,C,
, C2...output signal.

Claims (1)

【特許請求の範囲】[Claims] 複数系列の出力回路と、各出力回路からその正常／異常
を示す信号を入力して正常な出力回路を判断し、正常な
出力回路の１つに、出力信号を出力するための電源を供
給する制御回路と、出力回路の出力信号を出力する選択
回路を有する出力選択回路。Inputs multiple series of output circuits and signals indicating their normality/abnormality from each output circuit, determines the normal output circuit, and supplies power to one of the normal output circuits to output the output signal. An output selection circuit having a control circuit and a selection circuit that outputs an output signal of the output circuit.
JP13738686A 1986-06-12 1986-06-12 Output selection circuit Pending JPS62293840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13738686A JPS62293840A (en) 1986-06-12 1986-06-12 Output selection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13738686A JPS62293840A (en) 1986-06-12 1986-06-12 Output selection circuit

Publications (1)

Publication Number Publication Date
JPS62293840A true JPS62293840A (en) 1987-12-21

Family

ID=15197473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13738686A Pending JPS62293840A (en) 1986-06-12 1986-06-12 Output selection circuit

Country Status (1)

Country Link
JP (1) JPS62293840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02117234A (en) * 1988-10-27 1990-05-01 Oki Electric Ind Co Ltd Communication controlling equipment
DE4410338A1 (en) * 1994-03-25 1995-09-28 Telefunken Microelectron Data transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02117234A (en) * 1988-10-27 1990-05-01 Oki Electric Ind Co Ltd Communication controlling equipment
DE4410338A1 (en) * 1994-03-25 1995-09-28 Telefunken Microelectron Data transmission system

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