Method for modifying navigation information
First Claim
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1. A method for modifying navigation in formation comprising the steps of:
- determining display characteristics of a display device;
determining a first map element at a first scale;
determining a second map element at the first scale;
determining if the first map element or the second map element should be modified;
modifying one of the first map element and the second map element to produce a modified map element; and
preparing an instruction to send the modified map element to an OBU.
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Abstract
A method for modifying navigation information is disclosed. The method can be used to reduce the amount of information sent to an on board unit by modifying the navigation information. Generally, the modification is done in a way that the information losses associated with the modified or reduced navigation information is not apparent to a user. In some cases, map elements associated with the navigation information can be eliminated or combined.
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Citations
20 Claims
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1. A method for modifying navigation in formation comprising the steps of:
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determining display characteristics of a display device;
determining a first map element at a first scale;
determining a second map element at the first scale;
determining if the first map element or the second map element should be modified;
modifying one of the first map element and the second map element to produce a modified map element; and
preparing an instruction to send the modified map element to an OBU. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Method for modifying navigation information comprising the steps of:
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preparing a first map element at a first scale;
preparing a second map element at a second scale;
comparing the first map element with the second map element;
modifying one of the first map elements with the second map element if a predetermined criteria is met to produce a modified map; and
instructing a resource to send the modified map. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for modifying navigation information residing on a resource associated with a service provider comprising the steps of:
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determining a display characteristic of a display associated with a remote on board unit;
determining a first map element at a first scale and size suitable for the display;
determining a second map element at the first scale and size;
comparing the first map element with the second map element;
determining, based on the comparison, if the first map element or the second map element should be modified;
modifying one of the first map element and the second map element if a predetermined condition is met;
selecting a third map element and determining the third map element at the first scale;
comparing the third map element with the first map element;
determining, based on the comparison, if the first map element or the third map element should be modified; and
modifying one of the first map element and the third map element if a predetermined condition is met. - View Dependent Claims (19, 20)
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Specification