Image data providing system and method thereof
First Claim
1. An image data providing system, comprising:
- a first storing portion storing elementary streams each having a group of pictures;
a second storing portion storing a lookup table having location information and a frame number of an image of a predetermined format within each group of the pictures; and
a data providing portion receiving user information about a reproducing point of a request scene, searching the lookup table for the location information of a file name, which is one of the groups of the pictures, relating to the image of the predetermined format based on time information corresponding to the reproducing point of the request scene, extracting image data from the first storing portion based on the location information of the file name, and providing the user with the extracted image data.
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Abstract
An image data providing system and a method thereof. A group of pictures and detailed information for a scene are stored in a first storing portion, while a lookup table, including location information and a frame number of an image of a certain format within the group of pictures, is stored in a second storing portion. When receiving from user information about a reproducing point of a request image, a data providing portion searches the lookup table for a location of a file about the image of a certain format according to information about the time, i.e., the reproducing point. The data providing portion extracts image data from the first storing portion based on the searched location of the file and provides the user with the extracted image data. Based on the location information and the frame number of the intra picture that is written in advance according to the time, the image data corresponding to the user requested location is rapidly extracted and provided to the user.
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Citations
31 Claims
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1. An image data providing system, comprising:
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a first storing portion storing elementary streams each having a group of pictures;
a second storing portion storing a lookup table having location information and a frame number of an image of a predetermined format within each group of the pictures; and
a data providing portion receiving user information about a reproducing point of a request scene, searching the lookup table for the location information of a file name, which is one of the groups of the pictures, relating to the image of the predetermined format based on time information corresponding to the reproducing point of the request scene, extracting image data from the first storing portion based on the location information of the file name, and providing the user with the extracted image data. - View Dependent Claims (2, 3, 4, 5)
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6. An image data providing method, comprising:
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receiving user information about a reproducing point of a scene from a user;
searching a location of a file having an image of a predetermined format according to time information that corresponds to the reproducing point;
extracting image data from a group of pictures based on the location of the file; and
providing the user with the extracted image data. - View Dependent Claims (7, 8, 9, 10)
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11. A method in an image data providing system having elementary streams with groups of pictures, comprising:
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receiving user information about a reproducing point of a request scene;
determining whether a first one of elementary streams corresponding to the reproducing point of the user information is different from a second one of elementary streams which is currently provided in the image providing system;
searching a location of a file of the first elementary stream in response to time information corresponding to the reproducing point of the user information;
extracting image data as the request scene from groups of the pictures based on the location of the file. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An image providing system, comprising:
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a memory storing elementary streams each having a group of pictures, storing a lookup table having location information, a file name indicating each group of the pictures, and a frame number of each image of a predetermined format within each of the elementary streams; and
a data providing portion receiving user information about a reproducing point of a request scene, searching the lookup table for the location information including the file name based on time information corresponding to the reproducing point of the request scene, extracting image data from the memory based on the location information and the file name, and generating the extracted image data in response to the user information. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification