PARTIAL RETRIEVAL OF IMAGES IN THE COMPRESSED DOMAIN
First Claim
1. A method of transmitting an image, which is stored as a number of independently decodable coding units, between a server and a client, characterized by the steps of:
- transmitting a request for image data from the client to the server, starting transmission of the requested image data from the server to the client, transmitting a request for a new part of the image during or after transmission thereof, and transmitting the requested new part of the image from the server to the client using only coding units not already transmitted.
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Accused Products
Abstract
In a method and a system for retrieving images in a client-server system, images are stored as a set of independently decodable units (CU'"'"'s) on the server. A client issues a series of requests for image information. Each request contain a request number, information on what image information the client wants to see next and information on what image information the client had received at the time when the request was issued. The server does not have to store any state information (e.g. previous requests). On receiving a request, the server sends a restart marker, a confirmation of the request number and incremental image information corresponding to the request. The use of the method and the system as described herein will result in that no decoding of the whole bit stream will be required in the server. This will save a lot of time at the sender side (server side), since it not needs to a full decoding of the stream.
80 Citations
14 Claims
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1. A method of transmitting an image, which is stored as a number of independently decodable coding units, between a server and a client, characterized by the steps of:
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transmitting a request for image data from the client to the server, starting transmission of the requested image data from the server to the client, transmitting a request for a new part of the image during or after transmission thereof, and transmitting the requested new part of the image from the server to the client using only coding units not already transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A client-server system, wherein images are stored as a number of coding units in the server, characterized by:
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means in the server for receiving a request for image data from the client, means for transmitting the requested image data from the server to the client, means in the server for receiving a request for a new part of the image during or after transmission thereof, and means in the server for transmitting the requested new part of the image from the server to the client using only coding units not already transmitted. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification