Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for recording and reproducing compacted voice file by using decryption key

A technology for audio files and recording methods, applied in the direction of preventing unauthorized use of memory, protecting stored content from loss, etc.

Inactive Publication Date: 2004-02-25
LG ELECTRONIC (HUIZHOU) CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But above-mentioned decryption key is, in making MP3 audio file translate into password recording process, because producer just can specify and use with the irrelevant key value of formulating, so possess the user interface of the same player as MP3 player Confronting the problem of storing the respective decryption keys for many MP3 audio files encrypted and recorded in a storage like an MP3 player

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for recording and reproducing compacted voice file by using decryption key
  • Method for recording and reproducing compacted voice file by using decryption key
  • Method for recording and reproducing compacted voice file by using decryption key

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Hereinafter, according to the embodiment of the present invention, the decoding key recording method and reproducing method of the compressed audio file will be described in detail with reference to the accompanying drawings.

[0025] see figure 2 , figure 2 Shown is the composition diagram of the MP3 audio file in which the decryption key is dispersedly recorded in an embodiment of the present invention.

[0026] to refer to figure 1 As stated above, in an MP3 audio file, at least one frame containing a 4-byte fixed-length header and an arbitrary "variable length" is recorded, including the above-mentioned MP3 audio file. 128 bytes tag information.

[0027] According to the decryption key method according to the present invention, the encrypted compressed audio data is recorded in the above-mentioned frame field, and the decryption key for decryption will be distributed and recorded in several header records recorded in the front area of ​​the MP3 audio file, in p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a deciphering key recording and reproducing method for compressed voice file, and is aimed at protecting copyright. The method mainly includes the following steps: the deciphering keys of cryptographically-recorded MP3 compressed voice file are dispersedly recorded on the mark information, at the same time on the player like MP3 playing machine the deciphering keys which are dispersedly recorded on the mark information can be delected and combined. The method can prevent the enciphered MP3 voice file from being played by using general player.

Description

(1) Technical field [0001] The invention relates to a method for decrypting, building, recording and reproducing compressed audio files. In particular, it means that the decryption key value for decoding the audio data encrypted and recorded in the compressed audio file like the MP3 audio file is appropriately added to the MP3 audio file recording format, and it is detected on the same player as the MP3 player. It belongs to a method for recording and reproducing compressed audio files capable of decryption. (2) Background technology [0002] First, see figure 1 , figure 1 What is shown is that the existing MP3 audio file recording format has at least one 4-byte (4B) fixed-length header (Header) and any variable-length frame (Frame) that contains the information recorded in the above-mentioned MP3 audio file. Inside, the information of the above-mentioned MP3 audio file includes, for example, the 128-byte mark information recorded on the collection title of the MP3 audio ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F12/14G06F12/16
Inventor 崔武洛李洪南朴炯振
Owner LG ELECTRONIC (HUIZHOU) CO LTD
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com