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Method and device for storing stream data such as digital video and non-stream data

A technology for storing devices and streaming data, which is applied in the field of storing streaming data and non-streaming data and devices such as digital video, and can solve problems such as poor disk space usage efficiency

Inactive Publication Date: 2006-11-29
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional wisdom against using large logical blocks is poor disk space usage

Method used

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  • Method and device for storing stream data such as digital video and non-stream data
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  • Method and device for storing stream data such as digital video and non-stream data

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Embodiment Construction

[0062] Definitions of terms frequently used in this document are given below:

[0063] - Logical block: Logical block is the basic data unit, which is managed by the file system. In other words, it is the basic unit of data space allocated (or deallocated) to a file. A logical block is a concept that is purely part of the file system. It differs from the concept of a disk sector (although a logical block consists of one or several disk sectors). In other documents, you may find the term "cluster" used instead of a logical block to designate the basic file system data unit (as a cluster of disk sectors). In other documents, the term logical block may also be used to designate a physically addressable entity on disk.

[0064] - Digital TV data: The data streams for digital TV have specific properties: large amounts of data and real-time delivery (there is a notion of bit rate attached to the stream). Any file whose data is written (or read) in such a nature is considered to ...

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PUM

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Abstract

Storage device for stream data such as digital video and for non-stream data such as computer files, comprising a single file system which features a first type of storage unit for storing audio and / or video streams and a second type of storage unit for storing non-stream data, wherein the size of the first storage unit is a multiple of the size of the second storage unit, said device further comprising means for allocating a unit of the first type either for stream storage or to split a unit of the first type into a plurality of units of the second type, for storage of non-stream data. The invention also concerns a method for storing stream data or non-stream data. Applicable in digital television systems.

Description

technical field [0001] The present invention relates to methods and devices for storing streaming data such as digital video and audio and also for storing smaller files. Background technique [0002] The development of digital TV has inspired the idea of ​​recording digital TV data streams on recording media such as hard disks. The digital TV data stream includes digital audio and video data, as well as traditional information data. The use of these two types of data is different. The differences can be summarized as follows: digital audio and video data require high bit-rate data streams (with real-time constraints), but lower constraints on bit error rates; computer-type information data require very low bit error rates, but generally do not use real-time constraints. [0003] File systems are used on hard disks to store and organize data. File systems are known to be optimized for traditional information data constraints: specifically, they use very small (on the ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/804G06F12/00G06F17/30G11B20/10G11B20/12G11B27/00H04N5/44H04N5/76H04N5/781H04N5/91H04N7/24
CPCH04N21/4332H04N5/781H04N5/76H04N9/8042H04N5/4401H04N21/426
Inventor 瑟奇·德弗朗斯克劳德·查普尔盖尔·梅斯
Owner THOMSON LICENSING SA