JPS5658608A - Electronic odometer - Google Patents
Electronic odometerInfo
- Publication number
- JPS5658608A JPS5658608A JP13482179A JP13482179A JPS5658608A JP S5658608 A JPS5658608 A JP S5658608A JP 13482179 A JP13482179 A JP 13482179A JP 13482179 A JP13482179 A JP 13482179A JP S5658608 A JPS5658608 A JP S5658608A
- Authority
- JP
- Japan
- Prior art keywords
- data
- distance
- written
- covered
- intermediary
- 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.)
- Granted
Links
Abstract
PURPOSE: To give the correct distance covered irrespective of the breaking of a power source by a constitution wherein the data obtained by adding up the detection signals from a distance sensor are stored in two places of a nonvolatile memory and selected therefrom on the basis of the relations in amount of the data and thereby the addition of the distance covered is renewed sequentially.
CONSTITUTION: The signal of the distance sensor 1 which generates one pulse every time when a fixed distance, for instance, the distance of 100m is covered is inputted in a microcomputer 2 through the intermediary of the signal of a quartz oscillator 3 and written in two regions of the nonvolatile memory 4 as data A and B. The distance data A and B added up in the memory 4 are read out and, when the rela- tion of the data is A>B, the data of B+1 are written in. Then the data A and B are written in renewedly and the distance covered is indicated in an indicator 6 through the intermediary of a decoder driver 7. If the relation is A<B, the data of A+1 is written in and later the writing-in and indication of A and B are conducted. By this process being repeated, the correct indication of the distance covered is performed constantly even when there occurs the breaking of the power source.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13482179A JPS5658608A (en) | 1979-10-18 | 1979-10-18 | Electronic odometer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13482179A JPS5658608A (en) | 1979-10-18 | 1979-10-18 | Electronic odometer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5658608A true JPS5658608A (en) | 1981-05-21 |
JPS637326B2 JPS637326B2 (en) | 1988-02-16 |
Family
ID=15137256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13482179A Granted JPS5658608A (en) | 1979-10-18 | 1979-10-18 | Electronic odometer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5658608A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59180326A (en) * | 1983-03-30 | 1984-10-13 | Nippon Seiki Co Ltd | Cyclometer for automobile |
US4768210A (en) * | 1985-05-17 | 1988-08-30 | Siemens Aktiengesellschaft | Method and apparatus for failsafe storage and reading of a digital counter in case of power interruption |
JPH01304314A (en) * | 1988-05-31 | 1989-12-07 | Nippon Seiki Co Ltd | Electronic odometer |
JPH04248646A (en) * | 1990-12-28 | 1992-09-04 | Internatl Business Mach Corp <Ibm> | Durable control for solid file |
US7492660B2 (en) | 1989-04-13 | 2009-02-17 | Sandisk Corporation | Flash EEprom system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52155020A (en) * | 1976-06-18 | 1977-12-23 | Fujitsu Ltd | Memory unit |
-
1979
- 1979-10-18 JP JP13482179A patent/JPS5658608A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52155020A (en) * | 1976-06-18 | 1977-12-23 | Fujitsu Ltd | Memory unit |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59180326A (en) * | 1983-03-30 | 1984-10-13 | Nippon Seiki Co Ltd | Cyclometer for automobile |
US4768210A (en) * | 1985-05-17 | 1988-08-30 | Siemens Aktiengesellschaft | Method and apparatus for failsafe storage and reading of a digital counter in case of power interruption |
JPH01304314A (en) * | 1988-05-31 | 1989-12-07 | Nippon Seiki Co Ltd | Electronic odometer |
US7492660B2 (en) | 1989-04-13 | 2009-02-17 | Sandisk Corporation | Flash EEprom system |
JPH04248646A (en) * | 1990-12-28 | 1992-09-04 | Internatl Business Mach Corp <Ibm> | Durable control for solid file |
Also Published As
Publication number | Publication date |
---|---|
JPS637326B2 (en) | 1988-02-16 |
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