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특허 상세정보

Static random access memory backup

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01R-031/00    G06F-001/30    G06F-012/16   
미국특허분류(USC) 701/035; 701/022; 702/063; 307/066
출원번호 US-0627857 (2000-07-28)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Carlson Gaskey & Olds
인용정보 피인용 횟수 : 2  인용 특허 : 12
초록

A data logging system includes a data logging unit, a primary power source, an auxiliary power source and a controller. The controller detects whether the primary power source is available or unavailable and the time at which it became available or unavailable. From the time data the controller will then determine the total time the primary power source was unavailable to power the system. The controller adjusts or increases a predetermined auxiliary power source value by the auxiliary power source usage time period. Upon each occurrence in which the pri...

대표
청구항

1. A vehicle data logging system comprising:a data logging unit; a primary power source to power said data logging unit; an auxiliary power source to power said data logging unit when said primary power source is unavailable; and a controller in communication with said data logging unit, said controller operable to determine a cumulative auxiliary power source usage time period by determining a total time during which said primary power source is unavailable.

이 특허에 인용된 특허 (12)

  1. Imajo Minori (Yokohama JPX). Automotive trouble diagnosing system. USP1991014989146.
  2. Blair James W.. Auxiliary battery voltage/temperature compensation for automotive 12 volt system for electric vehicles. USP1998075783872.
  3. Thomas Daniel T. ; Kuck Burton M.. Auxiliary power unit tester. USP1999115986462.
  4. Coppola Anthony F. (31811 E. Nine Dr. Laguna Niguel CA 92677). Computer power management system. USP1986094611289.
  5. Kitada Shinichiro,JPX ; Aoyama Shunichi,JPX ; Hattori Noboru,JPX ; Matsuo Isaya,JPX. Drive system for hybrid drive vehicle. USP2000046053842.
  6. Lyons Arthur Paull ; Grewe Timothy Michael. Electric vehicle with variable efficiency regenerative braking depending upon battery charge state. USP1999085941328.
  7. Pollard Earsel W. (9943 Coddington Way St. Louis MO 63132). Energy generating and storage system for electric vehicle or the like. USP1984104477764.
  8. Bilir Adnan. Intelligent backup power controller. USP1999075923099.
  9. Noya Eric S. (Groton MA) Arnott Randy M. (Clinton MA). Method and apparatus for a backup power controller for volatile random access memory. USP1993045204963.
  10. Wong Albert C. K. (Golden Valley MN) Jurewicz Romuald M. (St. Louis Park MN) McCormack Michael D. (Robbinsdale MN). Method of determining the condition of a back-up battery for a real time clock. USP1997015596512.
  11. Chigumira Ishmael ; Chigumira Robin. Vehicle trip data computer. USP2000076088636.
  12. Matsuda Yutaka,JPX ; Kawai Satoshi,JPX ; Motomura Shigeki,JPX. Vehicular use power distribution apparatus and vehicular use power source apparatus. USP2000116144110.