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Method and apparatus for elapsed playback timekeeping of variable bit-rate digitally encoded audio data files

A technology of audio data and playing time, applied in the field of characteristic devices, can solve the problem of not allowing the creation or editing of playlists

Inactive Publication Date: 2004-11-24
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, audio data players generally do not allow creating or editing playlists on the audio player itself
Also, the M3U file format only includes file location or path information and a comment field

Method used

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  • Method and apparatus for elapsed playback timekeeping of variable bit-rate digitally encoded audio data files
  • Method and apparatus for elapsed playback timekeeping of variable bit-rate digitally encoded audio data files
  • Method and apparatus for elapsed playback timekeeping of variable bit-rate digitally encoded audio data files

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Embodiment Construction

[0028] The embodiments disclosed below are not intended to be exhaustive or to limit the invention to the specific forms disclosed in the following detailed description. Rather, the embodiments were chosen and described so that those skilled in the art can utilize their teachings.

[0029] figure 1A block diagram of a portable audio data player 10 according to the present invention is shown. Hereinafter, the general configuration and operation of various elements are described. However, the details of the various elements of the audio data player 10 are well known to those skilled in the art and thus will not be described again. Audio data player 10 includes a microcontroller 22 that controls the various elements and overall operation of audio data player 10 , including transferring data from data memory 32 to audio decoder DSP 12 via buffer memory 25 . Microcontroller 22 includes a suitable amount of memory 23 for storing various instruction sets and programs for controlli...

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Abstract

The present invention involves a digital audio player and a method for processing encoded digital audio data, wherein the digital audio data is encoded using one of a plurality of encoding formats. The audio data player has a hard disk or other data storage medium for storing data files, a microcontroller buffer memory for anti-skip protection, and an audio decoder. The encoded audio data files and associated decoder files are downloaded from a personal computer or similar device to the audio data player hard drive. The player provides a menu-driven user interface for selection, sorting, and playback of stored audio data files. During playback, elapsed playback time is computed and displayed. For variable bit-rate audio data files, the audio data player generates an elapsed playback timekeeping map concurrently with playback and fast forward scan of audio data files. Concurrently with playback, forward scan, and reverse scan of the audio data file, the audio data player determines the compression ratio for each data portion traversed, and calculates a playback time for each data portion traversed.

Description

technical field [0001] The present invention relates to an apparatus and method for processing digitally encoded audio data and features of associated music management software. Background technique [0002] The use of portable audio data players capable of playing digitally encoded audio data has become common. In particular, relatively small handheld devices capable of processing digitally encoded audio data stored in solid-state memory devices have become popular. Additionally, as the demand for higher data storage capacity in portable audio data players increases, another generation of players has been developed and is gaining popularity. These portable audio data players include miniature high capacity hard disk drives that do not suffer from jumping and other similar problems typical of hard disk drives used in personal computers ("PCs") and other applications. [0003] In an audio data player, digital audio data is loaded into a data storage device by first download...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00G10L19/02G10L21/12G11B19/02G11B19/12G11B20/00G11B20/10G11B27/00G11B27/10G11B27/34G11B27/36
CPCG11B20/10527G11B19/125G11B19/022G11B27/34G11B20/00086G11B2220/61G11B27/105G11B27/007G11B27/36G11B20/00007G11B2220/20G11B20/04
Inventor 罗伯特·J·迪克
Owner INTERDIGITAL CE PATENT HLDG