Patent ID: 7715399
Filing Date: 2010-05-11
Classification: H04L,H04W

Abstract:
1. A communication apparatus comprising: a signal receiving portion operative to receive an arriving communication signal for producing an input information signal corresponding to the arriving communication signal; a framed data producing portion operative to receive the input information signal from the signal receiving portion for producing framed data based on the input information signal, said framed data forming a data frame containing a frame header segment wherein identification information relating to the input information signal is provided and an information segment wherein communication information transferred by the input information signal is provided; a framed data processing portion operative to receive the framed data from the framed data producing portion for storing the framed data provided with an additional header segment in first memory means, and further operative to take out information provided in each of the additional header segment and the frame header segment of the framed data stored in the first memory means for forming header data and then transmitting the header data through a data transmission path; a header data treating portion operative to receive the header data transmitted through the data transmission path from the framed data processing portion for storing the header data in second memory means and further operative to take out the header data stored in the second memory means; a history data treating portion operative, to receive the header data taken out from the second memory means by the header data treating portion for preserving selected header data of the header data from the second memory means as history data in third memory means; first managing means for controlling operations of the header data treating portion and the history data treating portion to make a comparison between the header data taken out from the second memory means and the history data preserved in the third memory means, processing the header data stored in the second memory means in response to a result of the comparison to obtain a processed header data, and transmitting the processed header data through the data transmission path to the framed data processing portion; second managing means for causing the framed data processing portion to make selectively a change in the identification information provided in the frame header segment of the framed data stored in the first memory means in response to the processed header data transmitted to the framed data processing portion and to produce framed data for transmission based on the framed data stored in the first memory means; an output information signal producing portion operative to receive the framed data for transmission from the framed data processing portion for producing output information signal based on the framed data for transmission; and a signal transmitting portion operative to receive the output information signal from the output information producing portion for transmitting an output communication signal based on the output information signal.