Image correction method and apparatus for navigation system with portable navigation unit
First Claim
1. A navigation system for displaying a map for guiding a user to a destination, comprising:
- a first display provided on a removable navigational unit;
a second display provided on an in-vehicle portion within a vehicle, the second display having an aspect ratio different from that of the first display;
a navigation interface which electrically connects the removable navigation unit with the in-vehicle portion;
an image controller which generates both a first image for projection on the first display and a second image for projection on the second display where each of the first and second images has a plurality of image elements; and
a data table which stores data indicating a plurality of image elements, corrected image elements for different aspect ratios, and correction rules for correcting an aspect ratio of the image element;
wherein the image controller selects an image element and creates corrected image element data for the selected image element based on the correction rules in the data table for projection on the second display such that the image of only the selected image element has a substantially common aspect ratio on each of the first display and the second display even though the aspect ratios of the first and second displays are different from one another and wherein an unselected image element is projected without modification on the second display.
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Accused Products
Abstract
The image correction method and system for navigation device with portable navigation unit converts an image based on projection to a first display into a suitable image on a second display such that the area of the second display is used economically and efficiently while maintaining some elements of the image in substantially common aspect ratio between the images on the first display and on the second display. The image correction method determines the ratio of the second display, determines if image correction is required, and checks a correction table and performs image correction according to correction rules to generate the corrected image for projecting on the second display.
20 Citations
17 Claims
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1. A navigation system for displaying a map for guiding a user to a destination, comprising:
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a first display provided on a removable navigational unit; a second display provided on an in-vehicle portion within a vehicle, the second display having an aspect ratio different from that of the first display; a navigation interface which electrically connects the removable navigation unit with the in-vehicle portion; an image controller which generates both a first image for projection on the first display and a second image for projection on the second display where each of the first and second images has a plurality of image elements; and a data table which stores data indicating a plurality of image elements, corrected image elements for different aspect ratios, and correction rules for correcting an aspect ratio of the image element; wherein the image controller selects an image element and creates corrected image element data for the selected image element based on the correction rules in the data table for projection on the second display such that the image of only the selected image element has a substantially common aspect ratio on each of the first display and the second display even though the aspect ratios of the first and second displays are different from one another and wherein an unselected image element is projected without modification on the second display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 17)
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13. A method for generating a corrected image for a navigation system, comprising the following steps of:
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connecting a first display and a second display each having an aspect ratio different from one another; retrieving image data for the first display; determining a difference between the aspect ratio of the first display and the aspect ratio of the second display; determining which image element should be displayed with substantially the same aspect ratio on each of the first display and the second display; selecting an image element from a plurality of image elements that configure a first image displayed on the first display based on the determination step so that only the selected image element is corrected in its aspect ratio when displayed on the second display; checking a correction table to extract corrected image element data for only the selected image element by applying a correction rule based on a difference between the first and second display, where the correction table stores corrected image element data to be used as the selected image element; and generating the corrected image element data extracted from the correction table for displaying a second image of the selected image element on the second display so that only the selected image element has a substantially common aspect ratio on each of the first display and the second display even though the aspect ratios of the first and second displays are different from one another where an unselected element is projected without modification on the second display. - View Dependent Claims (14, 15, 16)
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Specification