Method and apparatus to provide efficient multimedia content storage

A device, memory technology, used to capture and store images, modern cellular phones and personal communication devices, can solve the problem of inapplicability
CN1973529AInactive Publication Date: 2007-05-30NOKIA CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
NOKIA CORP
Publication Date
2007-05-30
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

Disclosed is a method and a device, that includes a programmed data processor, to process image data. The method includes, for a plurality n of files each containing image data representing one of n images, selecting one file as a base file; selecting as a target file an image data file that is contextually-related file to the base file; comparing the target file and the base file to determine differences therebetween; and storing the target file as a reduced file that is a representation of differences between the image data of the target file and the image data of the base file. An image data file is selected as being contextually-related to the base file based on at least an image capture location, and / or on an image capture time, or based on a user input. Storing can be performed in a memory device that is a part of a wireless communications device, such as a cellular telephone or a personal communicator that includes a digital camera, such as a camera phone.
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Description

technical field

[0001] The present invention relates generally to efficient use of content storage in multimedia devices, and more particularly to techniques for capturing and storing images in systems with limited memory storage capabilities, such as digital cameras and devices incorporating digital cameras, which Includes modern cellular phones and personal communication devices. Background technique

[0002] The use of digital video cameras is expanding rapidly, and the capabilities and performance of digital camera equipment, including digital video cameras and so-called camera phones, are also increasing rapidly. The image resolution of camera phones is expected to increase exponentially, and cameras with image resolutions of 2 megapixels (two million picture elements) are now available for use in camera phones.

[0003] Increased camera resolution places stricter demands on the image storage subsystem. For example, a picture taken by a 4-megapixel camera requires a s...

Claims

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