Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1978-02-21
1980-07-01
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340706, 340715, 340782, 340 52R, G06F 314
Patent
active
042109086
ABSTRACT:
A display apparatus for displaying two-dimensionally on a plane the correlation between two parameters, such as the acceleration of an automobile and the fuel consumption rate in its engine, which vary in association with the running of the automobile. The displaying portion includes a plurality of light-emitting elements which are arranged in rows and columns on the same plane so as to be given their respective co-ordinates, or ordinates and abscissas. The acceleration of an automobile is calculated corresponding to the counted value of speed pulses having a frequency proportional to the speed of revolution of the wheels so that the calculated acceleration value may be discriminated to show to which of a plurality of acceleration ranges the acceleration value belongs. Similarly, the fuel consumption rate in the engine is calculated corresponding to the counted value of fuel pulses having a frequency proportional to the fuel consumption rate so that the calculated fuel consumption rate value may be discriminated to show to which of a plurality of fuel consumption rate ranges the fuel consumption rate belongs. The results of discrimination with respect to acceleration and fuel consumption rate are assigned to the ordinate and abscissa on the plane, respectively, so that one of the light-emitting elements arranged at the thus assigned co-ordinates may be lighted. The position or co-ordinate of the lighted element indicates the correlation between the acceleration and the fuel consumption rate.
REFERENCES:
patent: 2817815 (1957-12-01), Evans
patent: 3021387 (1962-02-01), Rajchman
patent: 3258743 (1966-06-01), Schuster
patent: 3296608 (1967-01-01), Feitler
patent: 3908152 (1975-09-01), Pfister
Curtis Marshall M.
Nippon Soken Inc.
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