EP0404381A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Real-time vehicle simulation
Assignee: Evans and Sutherland Computer Corp
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Filing: 1990-06-05
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Granted: —
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Expires: 2010-06-05
Abstract
Abstract An automobile-simulation graphics display D is generated in sequential frames (1-7) in dependence upon positions and movements of driver controls 12, 14, 16, 18, signalled by transducers 22. Non-linear suspension and chassis models 26 and 28 operate in conjunction with a road model 34, to derive from the transducer outputs, representation of a current vehicle-position (including orientation). A prediction of vehicle-position five display-frames in the future is made from this representation by a chassis prediction model 36 using drive-train and steering and control extrapolations derived by units 30 and 32 from the transducer outputs. The five-frame lead compensates for delay in computing, processing data for generation of the image display, and display of the image (54, 56, 58).
Inventors
- 👤 John Arthur Briggs
- 👤 Roderic Carleton Deyo
- 👤 Edward Joseph Haug
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 13:14
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/04; G09B9/05; G06; G06F; G06F30/00; G06F30/10; G06F30/15; G06F30/20; G06F30/23
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
81 words
A method for providing a display simulating a vehicle in real time in accordance with signals derived in dependence upon vehicle-control actions of a driver or other operator, characterised in that signals representative of vehicle position are derived from the first-mentioned signals, that predicted-position signals in accordance with successive predictions of position of the vehicle at a predetermined later time are derived in accordance with the position-representative signals, and that the simulation display is provided in dependence upon the predicted-position signals.
Claim 2
Independent Claim
81 words
A method for providing a display simulating a vehicle in real time in accordance with signals derived in dependence upon vehicle-control actions of a driver or other operator, characterised in that signals representative of vehicle position are derived from the first-mentioned signals, that predicted-position signals in accordance with successive predictions of position of the vehicle at a predetermined later time are derived in accordance with the position-representative signals, and that the simulation display is provided in dependence upon the predicted-position signals.
Claim 3
Dependent Claim
27 words
A method according to Claim 1 wherein the time lead in the predicted-position signals compensates substantially for delay in the provision of the display from those signals.
Claim 4
Independent Claim
136 words
A system for use by a driver to simulate a vehicle in real time, comprising: control means actuable to provide control signals representative of control actions for the simulated vehicle; vehicle simulation model means coupled to receive said control signals and responsive to provide representative positional signals indicative of the positional state of the simulated vehicle; vehicle prediction model means coupled to receive said control signals and said representative positional signals, said vehicle prediction model means for predicting from said representative positional signals based on said control signals to provide predicted positional signals indicative of a future positional state of the simulated vehicle; and reaction display means responsive to said predicted positional signals for manifesting a positional state of said vehicle to said driver and involving a substantial delay whereby said future positional state is approximated.
Claim 5
Independent Claim
136 words
A system for use by a driver to simulate a vehicle in real time, comprising: control means actuable to provide control signals representative of control actions for the simulated vehicle; vehicle simulation model means coupled to receive said control signals and responsive to provide representative positional signals indicative of the positional state of the simulated vehicle; vehicle prediction model means coupled to receive said control signals and said representative positional signals, said vehicle prediction model means for predicting from said representative positional signals based on said control signals to provide predicted positional signals indicative of a future positional state of the simulated vehicle; and reaction display means responsive to said predicted positional signals for manifesting a positional state of said vehicle to said driver and involving a substantial delay whereby said future positional state is approximated.
Claim 6
Dependent Claim
16 words
A system according to Claim 3 wherein said vehicle simulation model means incorporates non-linear operating elements.
Claim 7
Dependent Claim
25 words
A system according to Claim 3 or Claim 4 wherein said vehicle simulation model means comprises a suspension model unit and a chassis model unit.
Claim 8
Dependent Claim
16 words
A system according to Claim 5 wherein said vehicle suspension model unit is a non-linear unit.
Claim 9
Dependent Claim
18 words
A system aocording to Claim 5 or Claim 6 wherein said chassis model unit is a non-linear unit.
Claim 10
Independent Claim
28 words
A system according to any one of Claims 3 to 7 wherein said vehicle simulation model means includes a road model for simulating operating conditions for said vehicle.
Claim 11
Independent Claim
32 words
A system according to any one of Claims 3 to 8 wherein said reaction display means comprises a display system for manifesting a positional state of said vehicle as a visual scene.
Claim 12
Dependent Claim
27 words
A system according to claim 9 wherein said vehicle prediction model provides future positional signals advanced in time to approximate the response-time delay of said display system.
Claim 13
Independent Claim
21 words
A system according to any one of Claims 3 to 10 wherein said reaction display means comprises a graphics display apparatus.
Claim 14
Dependent Claim
22 words
A system according to claim 11 wherein said graphics display apparatus comprises a sequential frame display unit to provide a dynamic display.
Claim 15
Dependent Claim
28 words
A system according to claim 12 wherein said vehicle prediction model means provides predicted positional signals at least four sequential display frames in advance of said position signals.
Claim 16
Independent Claim
18 words
A system according to any one of Claims 3 to 13 wherein the vehicle simulated is an automobile.
References Cited (Backward Citations)
No citation records indexed.
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