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System and methods for encoding, transmitting, and displaying engine operation data

  • US 6,377,879 B2
  • Filed: 10/26/1999
  • Issued: 04/23/2002
  • Est. Priority Date: 10/26/1998
  • Status: Expired due to Fees
First Claim
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1. A vehicle data system for encoding, transmitting, and decoding vehicle operation data, the system comprising a first sensor configured to sense a first operation parameter, a second sensor configured to sense a second operation parameter, a third sensor configured to sense a third operation parameter, a controller connected to the sensors to receive signals indicative of the sensed first, second and third operation parameters, the controller configured to generate a time-varying periodic signal having a repetition frequency related to the first operation parameter, an amplitude as measured between high and low values related to the second operation parameter, and a ratio of time spent at the high value relative to the time spent at the low value related to the third operation parameter, a signal line connected to the controller to transmit the time-varying periodic signal from the controller to a receiver, the receiver configured to decode the time-varying periodic signal to determine and the first, second and third operation parameters.

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