Media communication system, and terminal apparatus and signal conversion apparatus in said system

• US 20050286501A1
• Filed: 06/23/2005
• Published: 12/29/2005
• Est. Priority Date: 10/31/2000
• Status: Active Grant

• Current Assignee: Mamoru Higuchi
• Original Assignee: Mamoru Higuchi
• Inventors: Higuchi, Mamoru
• Granted Patent: US 7,675,906 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 65/1026 at the edge
• CPC Class Codes: H04L 65/1036 at the edge
• CPC Class Codes: H04L 65/1043 Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04M 7/1225 Details of core network interconnection arrangements

Abstract

Disclosed is a media communication system in which communication of media such as sound, image and the like is performed between first and second terminals, each of which is constructed so as to be capable of IP communication, via an IP network. The system includes an IP packetizing unit for IP-packetizing and sending, to the IP network, a media signal sent from the first terminal, and for converting an IP packet received from the IP network to a media signal and sending the media signal to the first terminal, and a media signal transmitting unit for connecting a media/signal converter, which is provided within the first terminal, to the IP packetizing unit to transmit a media signal.

Claims

1. A signal conversion apparatus provided in a base-station facility and connected to an asynchronous communication network, comprising:

receiving means for receiving a control signal from a mobile station via a base station or asynchronous communication network;

means for converting a synchronous voice signal, which the base station has received from the mobile station via a radio channel, to an asynchronous voice signal directed to a destination decided by the control signal; and

sending means for sending the asynchronous voice signal obtained by the conversion to the asynchronous communication network.

2. A signal conversion apparatus provided in a base-station facility and connected to an asynchronous communication network, comprising:

receiving means for receiving a control signal from a mobile station via a base station or asynchronous communication network;

conversion means for receiving an asynchronous voice signal from a destination, which is specified by the control signal, via the asynchronous communication network and converting the asynchronous voice signal to a synchronous voice signal; and

sending means for sending the synchronous voice signal obtained by the conversion to the base station such a manner that the base station will transmit this signal to the mobile station via the radio channel.

3. A signal conversion apparatus provided in a base-station facility and connected to an asynchronous communication network, comprising:

receiving means for receiving a control signal from a mobile station via a base station or asynchronous communication network;

first conversion means for converting a synchronous voice signal, which a base station has received from a mobile station via a radio channel, to an asynchronous voice signal directed to a destination that has been set;

first sending means for sending the asynchronous voice signal obtained by the conversion to the asynchronous communication network;

second conversion means for receiving an asynchronous voice signal from the set destination via the asynchronous communication network and converting this signal to a synchronous voice signal; and

second sending means for sending the synchronous voice signal obtained by the conversion to the base station in such a manner that this signal will be transmitted to the mobile station via the radio channel.