Navigation system
First Claim
Patent Images
1. A navigation system including:
- a. GPS receivers for receiving positional information from a satellite system;
b. at least one differential correction unit for determining a differential correction related to the received positional information;
c. a digital map for providing navigational information, d. a user interface for indicating the positional and/or directional information to the user, the user interface including a human-to-human interface; and
e. a portable two-way communication system;
wherein at least one of the differential correction unit, the digital map and the user interface are loadable remote from the user and in communication with the user by means of the two-way communication system.
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Accused Products
Abstract
A navigation system, used for example to navigate visually handicapped people, uses a satellite system such as the GPS system to locate the user via a user held receiver (14). A two-way communication system such as a digital telephone (18) communicates with a central service center (10) at which the user'"'"'s exact location and navigational information can be determined. There is preferably provided a human-to-human information interface (30). The use of a two-way communication system (18) enables some of the components (20-30) to be kept at a remote and stationary base station (10).
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Citations
21 Claims
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1. A navigation system including:
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a. GPS receivers for receiving positional information from a satellite system;
b. at least one differential correction unit for determining a differential correction related to the received positional information;
c. a digital map for providing navigational information, d. a user interface for indicating the positional and/or directional information to the user, the user interface including a human-to-human interface; and
e. a portable two-way communication system;
wherein at least one of the differential correction unit, the digital map and the user interface are loadable remote from the user and in communication with the user by means of the two-way communication system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of navigating a person including the steps of:
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a. receiving positional information of the person from a satellite system;
b. determining a differential correction related to the received positional information;
c. providing positional and directional information;
d. providing a user interface, wherein the user interface includes a human-to-human interface; and
e. indicating the positional and/or directional information to the person;
wherein at least one of the steps of determining a differential correction, providing positional and directional information and providing a user interface are carried out remote from the person. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A navigation system including;
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a. GPS receivers which receive positional information from a satellite system;
b. at least one differential correction unit which determines a differential correction related to the received positional information;
c. a digital map containing navigational information, d. a user interface for indicating the positional and/or directional information to the user; and
e. a portable two-way communication system;
wherein the differential correction unit is loadable remote from the user and in communication with the user by means of the two-way communication system. - View Dependent Claims (19, 20, 21)
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Specification