US4849827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk and navigation apparatus for position locating system
Assignee: Pioneer Corp
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Filing: 1988-03-22
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Granted: 1989-07-18
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Expires: 2008-03-22
Abstract
Abstract A disk and navigation apparatus for reproducing the disk in a position locating system wherein the maps are more clearly displayed without requiring a large increase in the amount of data storage capacity required. On the disk there are recorded in a frequency division multiplex mode a video FM signal of a first frequency band obtained by frequency-modulating a video signal containing map data, and a video digital signal of a second frequency band obtained by digitizing and digitally modulating a video signal indicative of a travel path of the map data along which the object to be guided moves. The video digital signal of the travel path in a picture is located on the same track as the video FM signals of N (integer) fields of the corresponding picture.
Inventors
- 👤 Komei Hashimoto
- 👤 Tetsuo Harayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:56
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/9201; H04N5/9202; H04N5/9203; H04N5/9204; H04N5/9206
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
In a disk containing map data and the like for use with a navigation apparatus, the improvement wherein a video FM signal of a first frequency band obtained by frequency-modulating a video signal containing map data, and a video digital signal of a second frequency band obtained by digitalizing and digitally modulating a video signal indicative of a travel path of said map data along which an object to be guided moves are recorded in a frequency division multiplex mode in such a manner that said video digital signal of said travel path in a picture is on the same track as said video FM signals of N fields, N being an integer, of the corresponding picture.
Claim 2
Dependent Claim
117 words
In a disk containing map data and the like for use with a navigation apparatus, the improvement wherein a video FM signal of a first frequency band obtained by frequency-modulating a video signal containing map data, and a video digital signal of a second frequency band obtained by digitalizing and digitally modulating a video signal indicative of a travel path of said map data along which an object to be guided moves are recorded in a frequency division multiplex mode in such a manner that said video digital signal of said travel path in a picture is on the same track as said video FM signals of N fields, N being an integer, of the corresponding picture.
Claim 3
Dependent Claim
178 words
A navigation apparatus comprising: reproducing means for reproducing a recording medium on which a video FM signal of a first frequency band obtained by frequency-modulating a video signal containing map data and a video digital signal of a second frequency band obtained by digitizing and digitally modulating a video signal indicative of a travel path of said map data along which an object to be guided moves are recorded in a frequency division multiplex mode; a first demodulating circuit for demodulating said video FM signal from an output of said reproducing means; a second demodulating circuit for demodulating said video digital signal from said output of said reproducing means; means for obtaining a signal representing a present position of said object; a comparison circuit for comparing an output of said processor with an output of said second demodulating circuit; a composing circuit for combining an output of said first demodulating circuit with said signal representing the present position of said object; and display means for producing a map display in response to an output of said composing means.
Claim 4
Dependent Claim
178 words
A navigation apparatus comprising: reproducing means for reproducing a recording medium on which a video FM signal of a first frequency band obtained by frequency-modulating a video signal containing map data and a video digital signal of a second frequency band obtained by digitizing and digitally modulating a video signal indicative of a travel path of said map data along which an object to be guided moves are recorded in a frequency division multiplex mode; a first demodulating circuit for demodulating said video FM signal from an output of said reproducing means; a second demodulating circuit for demodulating said video digital signal from said output of said reproducing means; means for obtaining a signal representing a present position of said object; a comparison circuit for comparing an output of said processor with an output of said second demodulating circuit; a composing circuit for combining an output of said first demodulating circuit with said signal representing the present position of said object; and display means for producing a map display in response to an output of said composing means.
Claim 5
Dependent Claim
24 words
The navigation apparatus of claim 2, wherein said map data are obtained by converting a printed map to the form of a digital signal.
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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) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |