Diagnostic data recorder
First Claim
1. A portable communications controller for a vehicular diagnostic system comprising:
- means for connecting said controller to a vehicle data terminal capable of supplying data representative of a plurality of parameters monitored by a vehicle computer;
means for connecting said controller to a source of electrical power in the vehicle;
microcomputer means for enabling the flow of said parameter data through said data terminal and for composing said parameter data into a predetermined data stream;
means for recording said data stream;
means for connecting said controller to a telephone line and for transmitting said data stream through said telephone line to a remote diagnostic data processor.
5 Assignments
0 Petitions
Accused Products
Abstract
A vehicular diagnostic system is described which generally comprises a portable communications control station and a remote data processing station. The control station includes a portable communications controller which is adapted to be connected to a vehicle data terminal capable of supplying parameter data monitored by a vehicle computer and connected to a source of electrical power in the vehicle. The controller also includes the circuitry required to enable the flow of the parameter data through the vehicle data terminal, to compose the data into a predetermined data stream, to record this data stream on magnetic tape, and transmit live or recorded data through a telephone line to the remote data processing station.
229 Citations
20 Claims
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1. A portable communications controller for a vehicular diagnostic system comprising:
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means for connecting said controller to a vehicle data terminal capable of supplying data representative of a plurality of parameters monitored by a vehicle computer; means for connecting said controller to a source of electrical power in the vehicle; microcomputer means for enabling the flow of said parameter data through said data terminal and for composing said parameter data into a predetermined data stream; means for recording said data stream; means for connecting said controller to a telephone line and for transmitting said data stream through said telephone line to a remote diagnostic data processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A diagnostic system for a vehicle comprising:
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a portable communications control station having means for receiving data which is representative of a plurality of parameters monitored by a vehicle computer, means for recording said data, and first telephone communication means for transmitting and receiving both data and voice communications; and a diagnostic data processing station located remotely from said control station for displaying data transmitted from said control station, said data processing station having second telephone communication means for enabling both voice and data communication transfer between said control station and said data processing station. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of transferring data in a vehicular diagnostic system, comprising the steps of:
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enabling the flow of data representative of a plurality of parameters monitored by a vehicle computer; composing said data into a predetermined data stream having at least two words for permitting the validity of said parameter data to be determined, one of said validity determining words being a total of the number of data words in said stream and the other of said validity determining words being a total of all of the previous words in said stream; and recording said data stream on magnetic tape. - View Dependent Claims (18, 19, 20)
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Specification