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Content distribution server for distributing content frame for reproducing music and terminal

A technology for distributing servers and content, which is applied in the direction of sound-generating devices, devices and instruments that provide special services in branch offices, etc. It can solve the problems that audio data does not correspond to each tone, and the ringing start position cannot be set, etc.

Inactive Publication Date: 2007-04-04
KDDI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, with the method described in Japanese Patent Publication No. 2004-23298A, the ringing start position cannot be set on encoded compressed data generated from commercially available original music sounds, because the audio data is related to the individual tones. is not corresponding, but the note data corresponds to each tone

Method used

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  • Content distribution server for distributing content frame for reproducing music and terminal
  • Content distribution server for distributing content frame for reproducing music and terminal
  • Content distribution server for distributing content frame for reproducing music and terminal

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Experimental program
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Embodiment Construction

[0035] Encoded compressed data for music distribution services via the Internet is generated from PCM encoded data obtained from the original sound using compression encoding. A typical compression coding for audio data is MP3 according to the MPEG1 audio layer III standard (ISO / IEC11172-3, JIS X4323). In addition, the functionally expanded MPEG2 audio layer III standard can adopt half the sampling rate (sampling rate of MPEG1: 44.10 k / s, sampling rate of MPEG2: 22.05 k / s) compared with audio encoding according to the MPEG1 standard.

[0036]Compared with the encoding performed by MPEG1 Audio Layer III, AAC (Advanced Audio Coding) stipulated in MPEG2 Audio Layer III improves the encoding efficiency by at most 20%-50%. The ISO-based media file format AAC achieves audio quality close to that of an uncompressed CD and requires lower decoding performance. Compression coding such as AAC is useful for mobile terminals with low memory capacity and processor performance.

[0037] Fo...

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Abstract

There is provided a system capable of distributing code-compressed data based on audio data on a music composition via the Internet to a mobile telephone so that a user can cut out a desired range from the code-compressed data and register it as a call sound. The system has a data structure of a content frame (3GPP, 3GPP2) containing code-compressed data (AAC) of audio data. The content frame has at least one cut-out position information in the AAC data in its extended function section. A mobile telephone has a content storage unit, a cut-out selection unit to be used by the user to select at least one cut-out position information contained in the extended function section of the content frame, and a data cut-out section for cutting out data from the code-compressed data. The code-compressed data which has been cut out is decompressed when called and the sound is outputted from a loudspeaker.

Description

technical field [0001] The present invention relates to a content distribution server for distributing content frames for playing back music, and a mobile terminal for playing back music data by a trigger such as an incoming call of the mobile terminal or the like. Background technique [0002] Regarding the ringtone data of the mobile terminal, a melody is composed of a plurality of musical note data arranged in time order, and musical scale, volume and length data. The mobile terminal obtains about 30 seconds long musical note data from the content distribution server. [0003] According to Japanese Patent Publication No. 2004-23298A, the ringing part in the note data can be set by the mobile terminal. Make the melody of the desired part sound by specifying the start position and end position. [0004] In addition, with the improvement of the performance of the mobile terminal, the demand for using the original music sound available in the market as the ringing sound of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K15/02H04M1/00H04M11/00H04M11/08G10L19/02H04L12/18H04M19/04
CPCH04L12/18H04M19/04G06Q30/0601G10K15/02H04M1/00H04M11/005H04M11/08
Inventor 酒泽茂之高木幸一三桥浩片山浩次
Owner KDDI CORP