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Information providing system, method and program

A technology for information data and portable phones, which is applied in transmission systems, radio transmission systems, wireless communications, etc., and can solve the problems of inability to improve sound quality, decrease in sound quality of music data, and inability to improve sound quality.

Active Publication Date: 2007-03-28
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology described in the above-mentioned Patent Document 1 is a technology related to the codec pass-through method of audio data during a call.
Does not improve sound quality for audio files
That is, even if the audio source file is also transmitted using the codec passthrough method, the sound quality will deteriorate at the initial audio encoding process as described above.
[0023] Also, although a technology capable of reproducing high-quality music together with sound in a telephone device is disclosed, this technology is not intended to suppress Technology for sound quality reduction of music data
That is, as above, the problem of sound quality degradation caused by the codec of the sound source file cannot be improved.

Method used

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  • Information providing system, method and program
  • Information providing system, method and program
  • Information providing system, method and program

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0127] A first embodiment of the present invention will be described with reference to FIGS. 1 to 5 . FIG. 1 is a diagram showing an outline of an overall system configuration in a first embodiment of the present invention. Fig. 2 is a functional block diagram showing the configuration of the melody reproduction control server. FIG. 3 is a flowchart showing the flow of music encoding processing. Fig. 4 is a flowchart showing the operation of the melody reproduction control service device. FIG. 5 is a sequence diagram showing the operation of the entire system.

[0128]

[0129] As shown in Figure 1, the system that realizes the color ring back tone service comprises calling side portable telephone U1, called side portable telephone U2, portable telephone network 50, and wireless base station 51 and 52 that are arranged in this corresponding portable telephone network 50, relay Switch 53 (GS: Gateway Switch), mobile phone switches 54 and 55 (MSC: Mobile Switching Center) a...

no. 2 approach

[0156] Next, a second embodiment of the present invention will be described with reference to FIGS. 6 to 9 . FIG. 6 is a functional block diagram showing the configuration of the melody reproduction control server 1 in this embodiment. FIG. 7 is a flowchart showing the operation of the melody reproduction control server 1 in this embodiment. FIG. 8 is a schematic diagram showing the overall system configuration in this embodiment, and shows a state of transferring music data.

[0157] In this embodiment, the melody reproduction control server 1 is characterized in that the music data used in the service is stored in the sound source database in WAV format or analog format, and then transmitted to the calling mobile phone U1. , check the codec type of the mobile phone U1 on the calling side, perform music encoding processing corresponding to the codec type to generate music data, and distribute the music data to the mobile phone U1 on the calling side. That is, in the above-m...

no. 3 approach

[0170] Next, a third embodiment of the present invention will be described with reference to FIG. 9 . In the present embodiment, a music codec for generating music data through the music encoding process described above is installed in the wireless base station 51 together with a conventional audio codec.

[0171] That is, in the present embodiment, as shown in FIG. 9 , the wireless base station 51 has a music codec device 51a (music codec unit) that corresponds to the codec of the mobile phone. The music data transmitted from the melody reproduction control server 1 is subjected to music codec which is different from the codec for sound and does not include noise canceling processing.

[0172] Then, the music data transmitted from the melody reproduction control server 1 is transmitted in PCM64K as in the conventional example before reaching the wireless base station 51 (see arrows A21, 22, 23, 24 in FIG. 9). Then, in the wireless base station 51, when the music data is rece...

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PUM

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Abstract

The invention realizes high quality reproduction of information on a portable telephone by suppressing deterioration in quality of information data being provided through a wireless communication network while sustaining the quality of information in the portable telephone. In a system for providing information data to a portable telephone U1 through a wireless base station (51), the wireless base station (51) comprises a means for transmitting information data to the portable telephone U1 by codec through, and the information data is data encoded previously in compliance with the codec of the portable telephone.

Description

technical field [0001] The present invention relates to an information providing system, and more particularly to an information providing system for providing information to a mobile phone through a mobile phone network. It also relates to an information providing method, an information providing device, and an information providing program. Background technique [0002] With the popularization of mobile phones, technologies for improving the sound quality of the mobile phone during calls have been installed. The main codecs used for each cellular phone mode are shown below. Also, it is indicated in the order of "method: codec, transmission band (Kbit / sec), audio band (Kbit / sec)". [0003] PHS: APDCM, 32, 32 [0004] PDC Full rate (full rate): VSELP, 11.2, 6.7 [0005] PDC Halfrate (half rate): PSI-SELP, 5.6, 3.45 [0006] GSM: RPE-LTP, 22.8, 13 [0007] CdmaOne: EVRC, 9.6, 8 [0008] WCDMA (FOMA): AMR, 38.6, 12 / 23 [0009] Fixed telephone (reference): PCM, 64, 64 ...

Claims

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Application Information

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IPC IPC(8): H04B7/26G10K15/02H04M11/08H04L12/28H04W8/22H04W68/00H04W88/18H04W92/00
CPCH04M2207/182H04M3/42017H04W8/22H04L12/2854G10L19/167H04B7/2628H04M19/041
Inventor 森久幸
Owner NEC CORP