Patent ID: 6975420
Filing Date: 2005-12-13
Classification: H04L,H04N

Abstract:
1. A communication connecting device connected at one end to a first terminal unit and connected at the other end to a second terminal unit via an IP network, and selectively operable with a plurality of communication standards adaptive to said first terminal unit, said second terminal unit and said IP network for thereby implementing real-time communication, said device comprising: a terminal unit control circuit for storing data received from the first terminal unit or the second terminal unit, and controlling said first terminal unit in accordance with a first communication standard; a first storage storing size information representative of a size of data to be collectively coded; a coding/decoding circuit for collectively coding the data in accordance with the size information read out of said first storage and the first communication standard and determining whether or not said data is control data relating to control of data or decoding coded data received from the second terminal unit in accordance with said first communication standard; a second storage for storing, assuming a loss of the coded data output from said coding/decoding circuit, said coded data; an information adding/separating circuit for adding a header and data, which makes up for the loss of the coded data assumed, to said coded data in accordance with a second communication standard relating to the IP network or separating coded data from data received from the second terminal unit and feeding said coded data separated to said coding/decoding circuit; a control data monitoring circuit for causing, in response to a notification control signal output from said coding/decoding circuit to show that the data is the control data, said control data to be repeatedly read out of said second storage; and an interfacing circuit for converting the coded data input via said control monitoring circuit to a signal based on a command or converting a signal received from the second terminal unit to the coded data.