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Codec converter, gateway device, and codec converting method

A conversion device and codec technology, which is applied in the field of session border controllers, can solve problems such as complex system structure, non-support for multiple codec conversion, and no unified codec standard, etc., and achieve the effect of small processing delay

Active Publication Date: 2013-02-20
OKI ELECTRIC IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the communication of IP interconnection, in addition to mere data, media data such as audio and video data will also be included in the future. In IP interconnection of media data, there is currently a problem that there is no uniformity among service providers. codec standard (codec standard varies by service provider network)
[0011] If there are many types of IP-interconnected service provider networks (in other words, many types of codec standards) and do not support multiple codec conversions, gateway devices must be configured for each codec conversion, and the system structure is complex and large. change

Method used

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  • Codec converter, gateway device, and codec converting method
  • Codec converter, gateway device, and codec converting method
  • Codec converter, gateway device, and codec converting method

Examples

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Embodiment Construction

[0027] (A) Main implementation

[0028] Hereinafter, an embodiment of a codec conversion device, a gateway device, and a codec conversion method according to the present invention will be described in detail with reference to the drawings. The gateway device of the embodiment is a session border controller.

[0029] (A-1) Structure of Embodiment

[0030] Figure 4 It is a block diagram showing a schematic internal structure (conceptual structure) of the session border controller of the embodiment.

[0031] The session border controller 1 of the embodiment is set at the boundary between different service provider networks, has a plurality of interface units 11-1, 11-2, control unit 12 and switch unit 13, and is implemented in the document "ITU-TY.2012 Functions such as IPv4 / v6 conversion (NAT / NAPT) pinhole (pinhole) control and THIG (topology hiding) specified in Supplement".

[0032] The session border controller 1 of the embodiment is also provided with a codec conversion...

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Abstract

A codec converter includes: a plurality of codec converting units each configured to convert first encoded media data encoded using a first encoding mode into second encoded media data encoded using a second encoding mode different from the first encoding mode; a media data extracting unit configured to extract input-encoded media data from an input packet, and to generate conversion information that identifies a desired format conversion; a resource allocation unit configured to route the input-encoded media data to a selected one of the plurality of codec converting units based on the conversion information; and a packet reassembling unit configured to receive output-encoded media data from the selected one of the plurality of codec converting units, and to assemble the output-encoded media data into an output packet. Each of the plurality of codec converting units selects a different pair of first and second encoding modes.

Description

technical field [0001] The present invention relates to a codec conversion device, a gateway device, and a codec conversion method, and can be applied, for example, to a session border controller (S / BC) installed at a network border. Background technique [0002] In an IP interconnection environment such as NGN (Next Generation Network), etc., data is exchanged between different PCs (Personal Computers) or terminals covered by each service provider's network. [0003] In data communication, software for opening files and data of supported transfer methods is installed in terminals, PCs, etc., so there is no problem in data transfer across the networks of service providers. [0004] However, in the communication of IP interconnection, in addition to mere data, media data such as audio and video data will also be included in the future. In IP interconnection of media data, there is currently a problem that there is no uniformity among service providers. codec standard (codec ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M7/00H04L29/06
CPCH04L29/06503H04L65/103H04L29/06244H04L65/605H04L65/765
Inventor 猪石充
Owner OKI ELECTRIC IND CO LTD