US5974368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote vehicle data interface tag system
Assignee: Sarnoff Corp
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Filing: 1997-08-29
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Granted: 1999-10-26
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Expires: 2017-08-29
Abstract
Abstract A vehicle information system including a tag system mounted in a vehicle. The tag system transmits vehicle-related data acquired from the vehicle to an interrogator. The vehicle information system utilizes a bus in the vehicle with low-cost RF communications in the tag system and an interrogator to remotely access the vehicle-related data as the vehicle exits or enters a designated area. The interrogator provides the vehicle-related data acquired from the tag system to a host computer.
Inventors
- 👤 Jonathan Lloyd Schepps
- 👤 David Kalokitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:53
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/017; G07; G07C; G07C5/00; G07C5/008; G08G1/123; G08G1/127; H; H04; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/0602; H04J3/0605; H04L; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/4904
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
79 words
A vehicle information system in a multiple vehicle environment comprising a tag system in each vehicle for retrieving data from the vehicle and for only transmitting the retrieved data, an interrogator for only receiving the retrieved data from each tag system, and means for avoiding data collisions in said multiple vehicle environment, wherein each tag system transmits the retrieved data at any time in the multiple vehicle environment and the interrogator receives the retrieved data from each tag system.
Claim 2
Dependent Claim
79 words
A vehicle information system in a multiple vehicle environment comprising a tag system in each vehicle for retrieving data from the vehicle and for only transmitting the retrieved data, an interrogator for only receiving the retrieved data from each tag system, and means for avoiding data collisions in said multiple vehicle environment, wherein each tag system transmits the retrieved data at any time in the multiple vehicle environment and the interrogator receives the retrieved data from each tag system.
Claim 3
Dependent Claim
44 words
The vehicle information system of claim 1 including a single wire data bus in said vehicle, and a further wire for coupling said tag system to said single wire data bus, wherein said tag system retrieves data from said vehicle through said further wire.
Claim 4
Dependent Claim
54 words
The vehicle information system of claim 1 including a battery in said vehicle, wherein said means for avoiding data collisions include means for monitoring a voltage level of said battery, means for transmitting said retrieved data at a rate, and means for lowering said rate in response to a drop in said voltage level.
Claim 5
Dependent Claim
46 words
The vehicle information system of claim 1 wherein said means for avoiding data collisions include means for transmitting said retrieved data in message packets, each message packet transmitted at a fixed bit rate, and means for randomly varying the time between transmission of each message packet.
Claim 6
Dependent Claim
16 words
The vehicle information system of claim 4 wherein each of said message packets includes error-detection data.
Claim 7
Dependent Claim
17 words
The vehicle information system of claim 4 wherein each of said data packets include Manchester coded data.
Claim 8
Dependent Claim
18 words
The vehicle information system of claim 4 wherein said data packets are transmitted at an average transmission rate.
Claim 9
Dependent Claim
24 words
The vehicle information system of claim 4 wherein said interrogator includes error detection logic for detecting an error in each of said data packets.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-10-25 | 2003-04-26 | 2003-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-25 | 2007-04-26 | 2007-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-25 | 2011-04-26 | 2011-10-26 | $7700.00 | Window Closed / Lapsed |