Boots – shoes – and leggings
Patent
1991-08-05
1994-02-08
Black, Thomas G.
Boots, shoes, and leggings
340995, G06F 1550
Patent
active
052853918
ABSTRACT:
A route planning system (10) uses a computer (11) and stored road data to calculate a desired route to a destination. Road data is stored in a multiple layer road map data memory (13) in hierarchical multiple layers (17, 18, 19), each layer defining roadways by stored road segments (1S1-3S7) which extend between nodes (135-365)that correspond to roadway intersections. A first or lower layer (17) of road data designates a large number of first layer vehicle roadways while a second or higher level layer (18 or 19) of road data designates only some of the large number of first layer roadways as second layer roadways. Preferably, stored second layer road segments (2S1-2S17 or 3S1-3S7) extend between intersections of the roadways designated in the second layer rather than between intersections of roadways in the second layer with roadways or road segments not designated in the second layer but designated in the first layer. Preferably, at least some of the second layer road segments (2S1-2S17 or 3S1-3S7) are equivalent to the combination of several road segments (1S1-1S52)stored in the first layer. The road map data memory (13) and route planning system (10) minimize storage requirements for road data while speeding up the route planning process.
REFERENCES:
patent: 4570227 (1986-02-01), Tachi et al.
patent: 4675676 (1987-06-01), Takanabe et al.
patent: 4744033 (1988-05-01), Ogawa et al.
patent: 4760531 (1988-07-01), Yasui et al.
patent: 4761742 (1988-08-01), Hanabusa et al.
patent: 4924402 (1990-05-01), Ando et al.
patent: 4954959 (1990-09-01), Moroto et al.
patent: 4984168 (1991-01-01), Neukrichner et al.
patent: 4989151 (1991-01-01), Nuimura
patent: 5084822 (1992-01-01), Hayami
patent: 5168452 (1992-12-01), Yamada et al.
AFIPS Conf. Proc. National Computer Conference, 9-12; Jul. 1984. pp. 697-796.
"A Guidance System for Automobiles of the Tokyo Metropolitan Road Network using Multimedia", Masami Kato, Keisuke Ohnishi, Department of Electrical and Electronic Engineering, Faculty of Science and Technology, Sophia University, pages 1 through 8. (Presented at ISATA at Florence, Italy, May-Jun. 1991).
"Database Design, Development, and Access Considerations for Automotive Navigation", David C. Marsh, Navigation Technologies Corporation, CH2789-6/89/0000-0337.COPYRGT.1989IEEE, pp. 337-339.
"The Travelpilot: A Second-Generation Automotive Navigation System", James L. Buxton, et al. IEEE Transactions on Vehicular Technology, vol. 40, No. 1, Feb. 1991 0018-9545/91/0200-0041, pp. 41-44.
Link Laura J.
Smith, Jr. Bernard C.
Black Thomas G.
Melamed Phillip H.
Moore John H.
Motorola Inc.
Park Collin W.
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