G - Physics – 09 – G
Patent
G - Physics
09
G
324/14, 375/5
G09G 1/00 (2006.01) G01M 15/02 (2006.01) G01P 1/08 (2006.01) G01R 13/40 (2006.01)
Patent
CA 1197332
ENGINE ANALYZER WITH SIMULATED ANALOG METER DISPLAY ABSTRACT OF THE DISCLOSURE An engine analyzer for an internal combustion engine includes circuitry, under the control of a microprocessor, which senses parameters supplies digital signals indicative of those sensed parameters. A raster scan cathode ray tube (CRT) display is controlled by the microprocessor to display a simulation of an analog meter having a cursor or needle which moves as a function of the digital signals. When an analog display, such as a tachometer, is selected, the microprocessor controls the raster scan CRT to display a visual depiction of a meter having the appropriate range of values and having a needle which moves according to the measurements made by the system. The microprocessor automatically changes the scale of the simulated meter as appropriate without operator intervention. When operation within a predetermined range of values is required, the microprocessor causes the raster scan CRT display to produce a shaded area representing the range within which the needle should remain.
415736
Kling Michael J.
Marino Joseph A.
Bear Automotive Service Equipment Company
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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