상세정보
학술지
A Fault-Tolerant Cache System of Automotive Vision Processor Complying With ISO26262
- 발행일
- 201612
- 출처
- IEEE Transactions on Circuits and Systems II : Express Briefs, v.63 no.12, pp.1146-1150
- ISSN
- 1549-7747
- 출판사
- IEEE
- 협약과제
- 16PB2700, 자동차 전장시스템의 실시간 오류 감지 및 복구 프로세서 SW 개발, 권영수
- 초록
- With fluctuating voltage, widening operating temperature, and increasing clock frequency, cache systems are becoming increasingly susceptible to transient errors. Error correction code (ECC) is an attractive approach for transient error detection and correction. However, redundant memory for ECC has a significant impact on cost and increases the transient error rates. This brief presents a fault-tolerant cache system of automotive vision processors. The cache system has the small redundant memory and decreases the transient error rates with the proposed mechanism, which increases the error recovery rate and is considered with data cache characteristics. Also, the cache system is analyzed complying with ISO26262. As a result, thanks to 80% reduction of error traps caused by the cache system at the automotive vision processor's variable fault-tolerant policy, compared to the cache system of the state-of-art vision processors for automotive.
- KSP 제안 키워드
- Automotive Vision, Clock frequency, Error correction code, Error detection and correction, Error recovery, Fault-tolerant, Recovery rate, State-of-art, Vision processor, data cache, error rate