IMAGE DISPLAY SYSTEM, IMAGE DISPLAY METHOD, IMAGE DISPLAY PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM STORING SAID PROGRAM
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Accused Products
Abstract
The image display system includes a calculation unit, a specifying unit, a generation unit and a transmitting unit. Upon change of a zoom level of a current image not containing position information to a specified value on a user terminal, the calculation unit calculates a display range of an object represented by the current image after change in zoom level. The specifying unit refers to data of a different image of the object and specifies a part of the different image indicated by the display range calculated by the calculation unit. The different image has a different resolution from the current image. The generation unit generates a next image representing the part specified by the specifying unit using the data of the different image. The transmitting unit transmits the next image to the user terminal for switching from the current image to the next image.
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Citations
29 Claims
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1-15. -15. (canceled)
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16. An image display system comprising:
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a calculation unit configured to, when a zoom level of a current image not containing position information of an object reaches a specified threshold on a user terminal, divide the current image into meshes and then, calculate a display range of the object represented by the current image after change in zoom level by specifying blocks of the current image constituting the display range; a specifying unit configured to refer to data of a different image of the object from a storage unit, the different image being divided into meshes and having a different resolution from the current image, and specify a part of the different image indicated by blocks of the different image corresponding to the blocks constituting the display range calculated by the calculation unit; a generation unit configured to generate a next image representing the part specified by the specifying unit based on the blocks constituting the part of the different image; and a transmitting unit configured to transmit the next image to the user terminal for switching from the current image to the next image. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An image display method executed in an image display system, comprising:
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a calculation step of, when a zoom level of a current image not containing position information of an object reaches a specified threshold on a user terminal, dividing the current image into meshes and then, calculating a display range of the object represented by the current image after change in zoom level by specifying blocks of the current image constituting the display range; a specifying step of referring to data of a different image of the object from a storage unit, the different image being divided into meshes and having a different resolution from the current image, and specifying a part of the different image indicated by blocks of the different image corresponding to the blocks constituting the display range calculated in the calculation step; a generation step of generating a next image representing the part specified in the specifying step based on the blocks constituting the part of the different image; and a transmitting step of transmitting the next image to the user terminal for switching from the current image to the next image.
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29. A non-transitory computer-readable recording medium storing an image display program causing a computer to function as:
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a calculation unit configured to, when a zoom level of a current image not containing position information of an object reaches a specified threshold on a user terminal, divide the current image into meshes and then, calculate a display range of the object represented by the current image after change in zoom level by specifying blocks of the current image constituting the display range; a specifying unit configured to refer to data of a different image of the object from a storage unit, the different image being divided into meshes and having a different resolution from the current image, and specify a part of the different image indicated by blocks of the different image corresponding to the blocks constituting the display range calculated by the calculation unit; a generation unit configured to generate a next image representing the part specified by the specifying unit based on the blocks constituting the part of the different image; and a transmitting unit configured to transmit the next image to the user terminal for switching from the current image to the next image.
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Specification