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Patent US6718239B2 successfully refreshed from Google Patents.
US6718239B2
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US
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Vehicle event data recorder including validation of output
Assignee: Lytx Inc
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Filing: 2000-12-11
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Granted: 2004-04-06
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Expires: 2020-12-11
Abstract
Abstract An event recorder ( 10 ) mounted in a vehicle ( 20 ) includes sensors, including image sensor ( 60 ), sound sensor ( 90 ), location sensor ( 95 ), and vehicle performance sensors, and a capture circuit for storing sensed data signals around a triggering event. A CPU and program memory ( 74 ) are programmed to perform a validation function, such as a one-way hash function, on the captured sensor signal while transferring it to persistent memory device ( 100 ) so as to derive a validation value which is also stored in persistent memory device ( 100 ). To later verify that the data have not be tampered with, the stored data are operated on by the same validation function so as to derive an audit validation value, the audit validation value is compared with the validation value for equality and the outcome of the comparison is indicated.
Inventors
- 👤 Gary A. Rayner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:26
CPC Classifications
B; B60; B60R; B60R1/00; B60R1/12; B60R11/00; B60R11/04; G; G07; G07C; G07C5/00; G07C5/08; G07C5/0841; G07C5/085; G07C5/0875; G07C5/0891; B60R2001/1223; B60R2001/1253; B60R2300/00; B60R2300/10; B60R2300/105; B60R2300/30; B60R2300/301; B60R2300/302
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
111 words
In combination: a vehicle; and an event recorder mounted to said vehicle comprising: sensors for producing sensor signals, including: first image sensing means for sensing optical images and for producing a first image sensor signal representing the sensed images; a microprocessor including memory; wherein said microprocessor receives the sensor signals from said sensors and captures the sensor signals including the first image sensor signal in readily readable form during a time period and performs a validation function on the captured sensor signals including the first image sensor signal in readily readable form so as to derive a validation value while leaving the captured first image sensor signal in readily readable form.
Claim 2
Dependent Claim
111 words
In combination: a vehicle; and an event recorder mounted to said vehicle comprising: sensors for producing sensor signals, including: first image sensing means for sensing optical images and for producing a first image sensor signal representing the sensed images; a microprocessor including memory; wherein said microprocessor receives the sensor signals from said sensors and captures the sensor signals including the first image sensor signal in readily readable form during a time period and performs a validation function on the captured sensor signals including the first image sensor signal in readily readable form so as to derive a validation value while leaving the captured first image sensor signal in readily readable form.
Claim 3
Dependent Claim
40 words
The combination of claim 1 wherein; said event recorder further includes: output port means; and wherein: said microprocessor transmits the sensor signals including the first image sensor signal in readily readable form and validation value via said output port means.
Claim 4
Dependent Claim
64 words
The combination of claim 1 wherein; said event recorder further includes: a persistent memory device; and wherein: said microprocessor stores the captured data signals in a file on said persistent memory device; and performs the same validation function on the file so as to derive an audit validation value while leaving the captured first image sensor signal in the file in readily readable form.
Claim 5
Dependent Claim
40 words
The combination of claim 3 wherein: said event recorder further includes: a validation indicator; and wherein: said microprocessor compares the audit validation value with the validation value for equality, and indicates the outcome of the comparison on said validation indicator.
Claim 6
Dependent Claim
75 words
The combination of claim 1 wherein; said event recorder further includes: a persistent memory device; and an audit validation function means; and wherein: said microprocessor stores the captured data signals in a file on said persistent memory device; and said audit validation function means performs the same validation function on the file so as to derive an audit validation value while leaving the captured first image sensor signal in the file in readily readable form.
Claim 7
Dependent Claim
43 words
The combination of claim 5 wherein: said event recorder further includes: a validation indicator; and wherein: said audit validation function means compares the audit validation value with the validation value for equality, and indicates the outcome of the comparison on said validation indicator.
Claim 8
Dependent Claim
41 words
The combination of claim 1 wherein; said event recorder further includes: output port means; and wherein: said microprocessor compares the audit validation value with the validation value for equality, and indicates the outcome of the comparison on said output port means.
Claim 9
Dependent Claim
15 words
The combination of claim 7 wherein: said output port means includes a video output port.
Claim 10
Dependent Claim
26 words
The combination of claim 1 wherein: said sensors further include: an accelerometer for sensing acceleration and for producing an acceleration sensor signal representing the sensed acceleration.
Claim 11
Dependent Claim
28 words
The combination of claim 1 wherein: said sensors further include: a location sensor for sensing geographical location and for producing a location sensor signal representing the sensed location.
Claim 12
Dependent Claim
28 words
The combination of claim 1 wherein: said sensors further include: a time sensor for sensing the time and for producing a time sensor signal representing the sensed time.
Claim 13
Dependent Claim
27 words
The combination of claim 1 wherein: said sensors further include: a speedometer for sensing the speed and for producing a speed sensor signal representing the sensed speed.
Claim 14
Dependent Claim
13 words
The combination of claim 1 wherein: the validation function is a hash calculation.
Claim 15
Dependent Claim
16 words
The combination of claim 1 wherein: the validation function and the comparison are secure from tampering.
Claim 16
Dependent Claim
69 words
In an event recorder that has captured a sensor signal including an image signal in readily readable form while attached to a vehicle, a method of detecting memory tampering, the method comprising the steps of: performing a validation function on the captured sensor signal including the image signal in readily readable form so as to derive a validation value while leaving the captured image signal in readily readable form.
Claim 17
Dependent Claim
69 words
In an event recorder that has captured a sensor signal including an image signal in readily readable form while attached to a vehicle, a method of detecting memory tampering, the method comprising the steps of: performing a validation function on the captured sensor signal including the image signal in readily readable form so as to derive a validation value while leaving the captured image signal in readily readable form.
Claim 18
Dependent Claim
30 words
The method of claim 15 further including the step of: transmitting the captured sensor signal including the image signal in readily readable form and validation value via an output port.
Claim 19
Dependent Claim
16 words
The method of claim 16 wherein: the transmitted captured sensor signals are in readily readable form.
Claim 20
Dependent Claim
51 words
The method of claim 15 further including the step of: storing the captured sensor signal in a file in a memory; and performing the same validation function on the file so as to derive an audit validation value while leaving the captured image signal in the file in readily readable form.
Claim 21
Dependent Claim
28 words
The method of claim 18 further including the step of: comparing the audit validation value with the validation value for equality; and indicating the outcome of the comparison.
Claim 22
Dependent Claim
20 words
The method of claim 19 wherein: the steps of performing the validation function and the comparing are secure from tampering.
Claim 23
Dependent Claim
71 words
In an event recorder that has captured a sensor signal including an image signal in readily readable form while attached to a vehicle, a method of detecting memory tampering, the method comprising the steps of: performing a hash validation function on the captured sensor signal including the image signal in readily readable form so as to derive a valid hash value while leaving the captured image signal in readily readable form.
Claim 24
Dependent Claim
71 words
In an event recorder that has captured a sensor signal including an image signal in readily readable form while attached to a vehicle, a method of detecting memory tampering, the method comprising the steps of: performing a hash validation function on the captured sensor signal including the image signal in readily readable form so as to derive a valid hash value while leaving the captured image signal in readily readable form.
Claim 25
Dependent Claim
31 words
The method of claim 21 further including the step of: transmitting the captured sensor signals including the image signal in readily readable form and valid hash value via an output port.
Claim 26
Dependent Claim
16 words
The method of claim 22 wherein: the transmitted captured sensor signals are in readily readable form.
Claim 27
Dependent Claim
52 words
The method of claim 21 further including the step of: storing the captured sensor signal in a file in a memory; and performing the same hash validation function on the file so as to derive an audit hash value while leaving the captured image signal in the file in readily readable form.
Claim 28
Dependent Claim
29 words
The method of claim 24 further including the step of: comparing the audit hash value with the valid hash value for equality; and indicating the outcome of the comparison.
Claim 29
Dependent Claim
20 words
The method of claim 21 wherein: the steps of performing the validation function and the comparing are secure from tampering.
Claim 30
Dependent Claim
26 words
The method of claim 21 wherein: the sensors further include an accelerometer for sensing acceleration and for producing an acceleration sensor signal representing the sensed acceleration.
Claim 31
Dependent Claim
19 words
The method of claim 21 wherein: the sensors signal further includes a location sensor signal representing the sensed location.
Claim 32
Dependent Claim
19 words
The method of claim 21 wherein: the sensor signal further includes a time sensor signal representing the sensed time.
Claim 33
Dependent Claim
19 words
The method of claim 21 wherein: the sensor signal further includes a speed sensor signal representing the sensed speed.
Claim 34
Independent Claim
63 words
A method of detecting tampering with a captured data sensor signal including an image signal in readily readable form of an event recorder; the method comprising the steps of: performing a validation function on the captured sensor signal including the image signal in readily readable form so as to derive a validation value while leaving the captured image signal in readily readable form.
Claim 35
Independent Claim
63 words
A method of detecting tampering with a captured data sensor signal including an image signal in readily readable form of an event recorder; the method comprising the steps of: performing a validation function on the captured sensor signal including the image signal in readily readable form so as to derive a validation value while leaving the captured image signal in readily readable form.
Claim 36
Dependent Claim
32 words
The method of claim 31 further including the step of: transferring the captured sensor signal including the image signal in readily readable form and the validation value to a general purpose computer.
Claim 37
Dependent Claim
34 words
The method of claim 32 further including the step of: performing, with the general purpose computer, the same validation function on the transferred captured sensor signal so as to derive an audit validation value.
Claim 38
Dependent Claim
33 words
The method of claim 33 further including the step of: comparing, with the general purpose computer, the audit validation value with the validation value for equality; and indicating the outcome of the comparison.
Claim 39
Dependent Claim
48 words
The method of claim 31 wherein: the step of performing a validation function on the captured sensor signal is performed while transferring for storing the captured sensor signal on a persistent memory device; and further including the step of: storing the validation value in a persistent memory device.
Claim 40
Dependent Claim
91 words
In combination: a vehicle; and an event recorder mounted to said vehicle including: first image sensing means for sensing optical images and for producing a first image sensor signal representing the sensed images; a microprocessor including memory; wherein said microprocessor receives and captures the first image sensor signal in readily readable form during a time period and performs a validation function on the captured first image sensor signal in readily readable form so as to derive a validation value while leaving the captured first image sensor signal in readily readable form.
Claim 41
Dependent Claim
91 words
In combination: a vehicle; and an event recorder mounted to said vehicle including: first image sensing means for sensing optical images and for producing a first image sensor signal representing the sensed images; a microprocessor including memory; wherein said microprocessor receives and captures the first image sensor signal in readily readable form during a time period and performs a validation function on the captured first image sensor signal in readily readable form so as to derive a validation value while leaving the captured first image sensor signal in readily readable form.
Claim 42
Dependent Claim
36 words
The combination of claim 36 wherein; said event recorder further includes: output port means; and wherein: said microprocessor transmits the first image sensor signal in readily readable form and validation value via said output port means.
Claim 43
Dependent Claim
66 words
The combination of claim 36 wherein: said event recorder further includes: a persistent memory device; and wherein: said microprocessor stores the captured first image sensor signal in a file on said persistent memory device; and performs the same validation function on the file so as to derive an audit validation value while leaving the captured first image sensor signal in the file in readily readable form.
Claim 44
Dependent Claim
40 words
The combination of claim 38 wherein: said event recorder further includes: a validation indicator; and wherein: said microprocessor compares the audit validation value with the validation value for equality, and indicates the outcome of the comparison on said validation indicator.
Claim 45
Dependent Claim
76 words
The combination of claim 36 wherein; said event recorder further includes: a persistent memory device; and an audit validation function means; and wherein: said microprocessor stores the captured first image signal in a file on said persistent memory device; and said audit validation function means performs the same validation function on the file so as to derive an audit validation value while leaving the captured first image sensor signal in the file in readily readable form.
Claim 46
Dependent Claim
43 words
The combination of claim 40 wherein: said event recorder further includes: a validation indicator; and wherein: said audit validation function means compares the audit validation value with the validation value for equality, and indicates the outcome of the comparison on said validation indicator.
Claim 47
Dependent Claim
41 words
The combination of claim 36 wherein; said event recorder further includes: output port means; and wherein: said microprocessor compares the audit validation value with the validation value for equality, and indicates the outcome of the comparison on said output port means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-04-06 | 2007-10-06 | 2008-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-04-06 | 2011-10-06 | 2012-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-04-06 | 2015-10-06 | 2016-04-06 | $7700.00 | Window Closed / Lapsed |