KR970016971A - Redundancy Unit Using Serial Bus - Google Patents
Redundancy Unit Using Serial Bus Download PDFInfo
- Publication number
- KR970016971A KR970016971A KR1019950031165A KR19950031165A KR970016971A KR 970016971 A KR970016971 A KR 970016971A KR 1019950031165 A KR1019950031165 A KR 1019950031165A KR 19950031165 A KR19950031165 A KR 19950031165A KR 970016971 A KR970016971 A KR 970016971A
- Authority
- KR
- South Korea
- Prior art keywords
- message
- card
- serial bus
- bus line
- checking
- Prior art date
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- Hardware Redundancy (AREA)
Abstract
본 발명은 시리얼 버스를 공유하는 2개의 카드가 서로 버스의 상태를 감시하여 1대는 마스터 카드 역할을 하고 나머지는 슬레이브 카드 역할을 수행 할 수 있는 시리얼 버스를 이용한 이중화 장치 및 그 방법에 관한 것으로, 1개의 버스 라인에 각각 연결되어 상호간에 데이터를 교환할 수 있는 2개의 카드로 구성되어, 시리얼 버스를 공유하는 2개의 각 카드에 초기 전원이 공급되면 각각의 카드는 버스 라인에 메시지가 발생되었는지를 일정 시간 동안 확인하는 단계(21단계)와, 상기 확인 결과 메시지가 없으면 이를 먼저 확인한 카드가 마스터 카드로 전환되어 (211단계) 버스 라인에 메시지를 전달하고 상기 메시지 유무 확인 단계로 복귀하는 단계(212단계)와, 상기 메시지 유무를 확인한 후 버스 라인에 두개의 메시지가 전달되어 데이터 충돌이 발생하면 (22단계) 각 카드가 서로 슬레이브 상태로 전환된 다음 상기 메시지 유무 확인 단계로 복귀하는 단계(23단계)와, 한개의 메시지만 있으면(22단계) 이를 먼저 확인한 카드가 슬레이브 상태로 전환되어 메시지를 수신한 후 상기 메시지 유무 확인 단계로 복귀하는 단계(221단계)로 이루어진다.The present invention relates to a redundancy apparatus and a method using a serial bus that two cards sharing a serial bus monitors the state of each other, and one serves as a master card and the other serves as a slave card. It consists of two cards that are connected to each of the two bus lines and can exchange data with each other. When initial power is supplied to each of the two cards that share a serial bus, each card can determine whether a message has occurred on the bus line. Checking (step 21) for a period of time, and if there is no message as a result of the checking, the card which has been checked first is switched to the master card (step 211), delivering a message to the bus line and returning to the message checking step (212). ), And if two messages are delivered to the bus line after the existence of the message, a data collision occurs. (Step 22) After each card is switched to the slave state, and then returning to the message presence check step (step 23), and if there is only one message (step 22), the first card is checked to switch to the slave state and the message is sent. After reception, the process returns to the step of checking whether the message exists (step 221).
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 본 발명에 따른 시리얼 버스를 이용한 이중화 장치의 구성도이다.2 is a block diagram of a duplexing apparatus using a serial bus according to the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950031165A KR970016971A (en) | 1995-09-21 | 1995-09-21 | Redundancy Unit Using Serial Bus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950031165A KR970016971A (en) | 1995-09-21 | 1995-09-21 | Redundancy Unit Using Serial Bus |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970016971A true KR970016971A (en) | 1997-04-28 |
Family
ID=66616274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950031165A KR970016971A (en) | 1995-09-21 | 1995-09-21 | Redundancy Unit Using Serial Bus |
Country Status (1)
Country | Link |
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KR (1) | KR970016971A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101022472B1 (en) * | 2004-01-17 | 2011-03-16 | 삼성전자주식회사 | Method for using bus efficiently |
-
1995
- 1995-09-21 KR KR1019950031165A patent/KR970016971A/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101022472B1 (en) * | 2004-01-17 | 2011-03-16 | 삼성전자주식회사 | Method for using bus efficiently |
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WITN | Withdrawal due to no request for examination |