US4570227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable map display apparatus
Assignee: National Institute of Advanced Industrial Science and Technology
•
Filing: 1982-08-11
•
Granted: 1986-02-11
•
Expires: 2002-08-11
Abstract
Abstract A portable map display apparatus stores, in a memory, features of a plurality of points on a given map and features of routes connecting such points and, on receiving input signals concerning a given point of start and a given destination, sequentially displays, on an output device, the information on the optimum route to be followed in reaching the destination from the point of start.
Inventors
- 👤 Susumu Tachi
- 👤 Kiyoshi Komoriya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:46
CPC Classifications
G; G06; G06Q; G06Q10/00; G06Q10/04; G01; G01C; G01C21/00; G01C21/20; G09; G09B; G09B21/00; G09B21/001; G09B21/007; G09B29/00; G09B29/10; G09B29/106
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
266 words
A portable map display apparatus, comprising: memory means for storing therein (a) a multiplicity of specific point locations within a predetermined geographical region, (b) substantially fixed, non-variable topographical features characteristic of said multiplicity of specific point locations within said predetermined geographical region, and (c) substantially fixed, non-variable topographical features characteristic of a plurality of different routes interconnecting said multiplicity of specific point locations within said predetermined geographical region; means for selectively inputting into said apparatus predetermined criteria by means of which an optimum route of travel can be determined, from said plurality of different routes interconnecting said multiplicity of specific point locations within said predetermined geographical region, between a predetermined point of start within said predetermined geographical region as selected from said multiplicity of specific point locations within said predetermined geographical region and a predetermined point of destination within said predetermined geographical region as selected from said multiplicity of specific point locations within said predetermined geographical region; optimum route determination means for determining said optimum route of travel, between said selected predetermined point of start and said selected predetermined point of destination, as dictated by said substantially fixed, non-variable topographical features characteristic of said multiplicity of specific point locations, and said substantially fixed, non-variable topographical features characteristic of said plurality of different routes interconnecting said multiplicity of specific point locations, within said predetermined geographical region, and in response to said selected predetermined criteria inputted into said apparatus; and means for displaying information characteristic of said optimum route, determined by said apparatus, defined between said selected predetermined point of start and said selected predetermined point of destination.
Claim 2
Dependent Claim
266 words
A portable map display apparatus, comprising: memory means for storing therein (a) a multiplicity of specific point locations within a predetermined geographical region, (b) substantially fixed, non-variable topographical features characteristic of said multiplicity of specific point locations within said predetermined geographical region, and (c) substantially fixed, non-variable topographical features characteristic of a plurality of different routes interconnecting said multiplicity of specific point locations within said predetermined geographical region; means for selectively inputting into said apparatus predetermined criteria by means of which an optimum route of travel can be determined, from said plurality of different routes interconnecting said multiplicity of specific point locations within said predetermined geographical region, between a predetermined point of start within said predetermined geographical region as selected from said multiplicity of specific point locations within said predetermined geographical region and a predetermined point of destination within said predetermined geographical region as selected from said multiplicity of specific point locations within said predetermined geographical region; optimum route determination means for determining said optimum route of travel, between said selected predetermined point of start and said selected predetermined point of destination, as dictated by said substantially fixed, non-variable topographical features characteristic of said multiplicity of specific point locations, and said substantially fixed, non-variable topographical features characteristic of said plurality of different routes interconnecting said multiplicity of specific point locations, within said predetermined geographical region, and in response to said selected predetermined criteria inputted into said apparatus; and means for displaying information characteristic of said optimum route, determined by said apparatus, defined between said selected predetermined point of start and said selected predetermined point of destination.
Claim 3
Dependent Claim
46 words
Apparatus as set forth in claim 1, wherein: one of said substantially fixed, non-variable topographical features characteristic of said multiplicity of specific point locations within said predetermined geographical region comprises the type of intersection defined at a selected one of said multiplicity of specific point locations.
Claim 4
Dependent Claim
45 words
Apparatus as set forth in claim 1, wherein: one of said substantially fixed, non-variable topographical features characteristic of said plurality of different routes interconnecting said multiplicity of specific point locations within said predetermined geographical region comprises the distance between said multiplicity of specific point locations.
Claim 5
Dependent Claim
57 words
Apparatus as set forth in claim 1, wherein: one of said substantially fixed, non-variable topographical features characteristic of said plurality of different routes interconnecting said multiplicity of specific point locations within said predetermined geographical region comprises the direction of travel of vehicular traffic upon a predeterminedly selected route between said point of start and point of destination.
Claim 6
Dependent Claim
53 words
Apparatus as set forth in claim 1, wherein: one of said substantially fixed, non-variable topographical features characteristic of said plurality of different routes interconnecting said multiplicity of specific point locations within said predetermined geographical region comprises road inclination conditions upon a predeterminedly selected route between said point of start and point of destination.
Claim 7
Dependent Claim
51 words
Apparatus as set forth in claim 1, wherein: one of said predetermined criteria for determining said optimum route of travel between said predetermined point of start and said predetermined point of destination comprises the minimum distance to be traveled between said predetermined point of start and said predetermined point of destination.
Claim 8
Dependent Claim
55 words
Apparatus as set forth in claim 1, wherein: one of said predetermined criteria for determining said optimum route of travel between said predetermined point of start and said predetermined point of destination comprises the minimum number of corners to be turned when travelling between said predetermined point of start and said predetermined point of destination.
Claim 9
Dependent Claim
41 words
Apparatus as set forth in claim 1, wherein: one of said predetermined criteria for determining said optimum route of travel between said predetermined point of start and said predetermined point of destination comprises the minimum number of intersections to be crossed.
Claim 10
Dependent Claim
51 words
Apparatus as set forth in claim 1, wherein: one of said predetermined criteria for determining said optimum route of travel between said predetermined point of start and said predetermined point of destination comprises the travel time required to travel between said predetermined point of start and said predetermined point of destination.
Claim 11
Dependent Claim
23 words
Apparatus as set forth in claim 1, wherein: said means for displaying said information characteristic of said optimum route comprises a visual display.
Claim 12
Dependent Claim
23 words
Apparatus as set forth in claim 1, wherein: said means for displaying said information characteristic of said optimum route comprises an auditory display.
Claim 13
Dependent Claim
23 words
Apparatus as set forth in claim 1, wherein: said means for displaying said information characteristic of said optimum route comprises a tactile display.
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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |