Patent US4796190A successfully refreshed from Google Patents.
US4796190A
Expired / Lapsed
US
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Navigation system
Assignee: Individual
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Filing: 1986-06-04
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Granted: 1989-01-03
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Expires: 2006-06-04
Abstract
Abstract An improved navigation system for a vehicle. The system includes a microprocessor and memory therefor and permits the pilot of an aircraft or other vehicle to display on a screen a navigation chart showing the position of the vehicle with respect to fixed environmental checkpoints. A compact laser disk comprises the memory. Environmental checkpoints and other navigation data displayed on the screen are stored on the compact disk. The system includes a procedure for inexpensively and quickly updating system memory. The system supersedes navigation chart manuals now utilized by pilots.
Inventors
- 👤 Elihu C. Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:02
CPC Classifications
G; G01; G01C; G01C21/00; G01C21/20; G01C21/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
183 words
A navigation system for a vehicle, including (a) a display screen: (b) memory means for storing navigation chart information for a selected geographical area, including fixed environmental checkpoints in said area; (c) means for storing information to update said navigation chart information stored in said memory means; (d) means in communication with said update information storing means for transmitting an electromagnetic radiation signal carrying said update information; (e) sensor means for detecting the touching of a fingertip to said display screen to generate signals representing certain environmental checkpoints and other chart information contained in said memory means for a portion of said selected geographical area; (f) means in communication with said sensor means to recall from said memory means said chart information for said portion of said selected geographical area; (g) means in communication with said recall means for generating signals corresponding to said chart information in said portion of said selected geographical area to display said information on said screen; and, (h) means for receiving said electromagnetic radiation signal and processing said signal to direct said update information to said memory means.
Claim 2
Dependent Claim
183 words
A navigation system for a vehicle, including (a) a display screen: (b) memory means for storing navigation chart information for a selected geographical area, including fixed environmental checkpoints in said area; (c) means for storing information to update said navigation chart information stored in said memory means; (d) means in communication with said update information storing means for transmitting an electromagnetic radiation signal carrying said update information; (e) sensor means for detecting the touching of a fingertip to said display screen to generate signals representing certain environmental checkpoints and other chart information contained in said memory means for a portion of said selected geographical area; (f) means in communication with said sensor means to recall from said memory means said chart information for said portion of said selected geographical area; (g) means in communication with said recall means for generating signals corresponding to said chart information in said portion of said selected geographical area to display said information on said screen; and, (h) means for receiving said electromagnetic radiation signal and processing said signal to direct said update information to said memory means.
Claim 3
Dependent Claim
14 words
The navigation of claim 1 wherein said memory means comprises a compact laser disk.
Claim 4
Dependent Claim
242 words
A navigation system for a vehicle, including (a) a display screen; (b) memory means for storing navigation chart information for a selected geographical area, said information including fixed environmental checkpoints in said area; (c) means for storing information to update said navigation chart information stored in said memory means; (d) means in communication with said update information storing means to transmit an electromagnetic radiation signal carrying said update information; (e) sensor means for generating signals representing certain environmental checkpoints and other chart information contained in said memory means for a portion of said selected geographical area; (f) means in communication w1th sa1d sensor means to recall from said memory means said chart information for said portion of said selected geographical area; (g) means in communication with said recall means for generating signals corresponding to said chart information in said portion of said selected geographical area to display said information on said screen; (h) means for receiving said electromagnetic radiation signal and processing said signal to direct said update information to said memory means; (i) a key access component concealable on the person and carrying identification information required by said system prior to the directing of said update information into said memory means; and, (j) means for reading said key access component to detect said identification information carried thereon; said update information not being directed to said memory means until said reading means detects said required identification information on said key access component.
Claim 5
Dependent Claim
242 words
A navigation system for a vehicle, including (a) a display screen; (b) memory means for storing navigation chart information for a selected geographical area, said information including fixed environmental checkpoints in said area; (c) means for storing information to update said navigation chart information stored in said memory means; (d) means in communication with said update information storing means to transmit an electromagnetic radiation signal carrying said update information; (e) sensor means for generating signals representing certain environmental checkpoints and other chart information contained in said memory means for a portion of said selected geographical area; (f) means in communication w1th sa1d sensor means to recall from said memory means said chart information for said portion of said selected geographical area; (g) means in communication with said recall means for generating signals corresponding to said chart information in said portion of said selected geographical area to display said information on said screen; (h) means for receiving said electromagnetic radiation signal and processing said signal to direct said update information to said memory means; (i) a key access component concealable on the person and carrying identification information required by said system prior to the directing of said update information into said memory means; and, (j) means for reading said key access component to detect said identification information carried thereon; said update information not being directed to said memory means until said reading means detects said required identification information on said key access component.
Claim 6
Dependent Claim
15 words
The navigation system of claim 3 wherein said memory means comprises a compact laser disk.
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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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |