ELECTRONIC BOOK AND METHOD FOR CONTROLLING DISPLAY OF FILES
First Claim
1. A method being executed by a processor of an electronic book (e-book) for controlling display of files displayed on a display screen of the e-book, the method comprising:
- setting reference parameters for adjusting display of files displayed on the display screen, the reference parameters comprising an optimal distance and a shortest distance between a user'"'"'s face and the e-book, and a maximum multiplying factor of the files;
setting zoom rules of the files when a distance of the user'"'"'s face and the e-book varies between the shortest distance and the optimal distance;
using a time-of-flight (TOF) camera to capture an image of a scene in front of the e-book, when the user views a file displayed on the display screen;
recognizing a facial region in the image, and determining a current distance between the user'"'"'s face and the e-book based on distance information of the facial region in the image; and
displaying the file on the display screen in an original size when the current distance is equal to or more than the optimal distance, or displaying the file on the display screen in the original size as multiplied by the maximum multiplying factor when the current distance is equal to or less than the shortest distance, or adjusting a multiplying factor for the file according to the current distance and the zoom rules and displaying the file on the display screen in the original size as multiplied by the adjusted multiplying factor when the current distance is more than the shortest distance and less than the optimal distance.
1 Assignment
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Accused Products
Abstract
An electronic book (e-book) includes a display screen. When a user reads a file on the display screen, the e-book determines a distance between the user'"'"'s face and the e-book based on distance information in a captured image of the user. When the distance equals or is more than a first distance, the e-book displays the file in an original size. When the distance equals or is less than a second distance, the e-book displays the file in the original size as multiplied by a maximum multiplying factor. When the distance is more than the second distance and less than the first distance, the e-book adjusts a multiplying factor for the file according to the current distance and the zoom rules, and adjusts the display of the file on the display screen accordingly.
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Citations
20 Claims
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1. A method being executed by a processor of an electronic book (e-book) for controlling display of files displayed on a display screen of the e-book, the method comprising:
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setting reference parameters for adjusting display of files displayed on the display screen, the reference parameters comprising an optimal distance and a shortest distance between a user'"'"'s face and the e-book, and a maximum multiplying factor of the files; setting zoom rules of the files when a distance of the user'"'"'s face and the e-book varies between the shortest distance and the optimal distance; using a time-of-flight (TOF) camera to capture an image of a scene in front of the e-book, when the user views a file displayed on the display screen; recognizing a facial region in the image, and determining a current distance between the user'"'"'s face and the e-book based on distance information of the facial region in the image; and displaying the file on the display screen in an original size when the current distance is equal to or more than the optimal distance, or displaying the file on the display screen in the original size as multiplied by the maximum multiplying factor when the current distance is equal to or less than the shortest distance, or adjusting a multiplying factor for the file according to the current distance and the zoom rules and displaying the file on the display screen in the original size as multiplied by the adjusted multiplying factor when the current distance is more than the shortest distance and less than the optimal distance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electronic book (e-book), comprising:
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a storage unit that stores a plurality of files; a display screen; a time-of-flight (TOF) camera that captures an image of a scene in front of the e-book and records distance information between a lens of the TOF camera and each point on the scene in the image, when a user views a file displayed on the display screen; at least one processor; and a display control unit comprising one or more programs executable by the at least one processor, the one or more programs comprising instructions to; set reference parameters for adjustment of display of files displayed on the display screen, the reference parameters comprising an optimal distance and a shortest distance between a user'"'"'s face and the e-book, and a maximum multiplying factor to be applied to the files; set zoom rules of the files when a distance of the user'"'"'s face and the e-book varies between the shortest distance and the optimal distance; recognize a facial region in the image, and determine a current distance between the user'"'"'s face and the e-book based on distance information of the facial region in the image; and display the file on the display screen in an original size when the current distance is equal to or more than the optimal distance, or display the file on the display screen in the original size as multiplied by the maximum multiplying factor when the current distance is equal to or less than the shortest distance, or adjust a multiplying factor for the file according to the current distance and the zoom rules and display the file on the display screen in the original size as multiplied by the adjusted multiplying factor when the current distance is more than the shortest distance and less than the optimal distance. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer-readable medium storing a set of instructions, the set of instructions capable of being executed by a processor of an electronic book (e-book) to control display of files displayed on a display device of the e-book, the method comprising:
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setting reference parameters for adjustment of display of files displayed on the display screen, the reference parameters comprising an optimal distance and a shortest distance between a user'"'"'s face and the e-book, and a maximum multiplying factor to be applied to the files; setting zoom rules of the files when a distance of the user'"'"'s face and the e-book varies between the shortest distance and the optimal distance; using a time-of-flight (TOF) camera to capture an image of a scene in front of the e-book, when the user viewing a file displayed on the display screen; recognizing a facial region in the image, and determining a current distance between the user'"'"'s face and the e-book based on distance information of the facial region in the image; and displaying the file on the display screen in an original size when the current distance is equal to or more than the optimal distance, or displaying the file on the display screen in the original size as multiplied the maximum multiplying factor when the current distance is equal to or less than the shortest distance, or adjusting a multiplying factor for the file according to the current distance and the zoom rules and displaying the file on the display screen in the original size as multiplied the adjusted multiplying factor when the current distance is more than the shortest distance and less than the optimal distance. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification