Patent ID: 7656869
Filing Date: 2010-02-02
Classification: H04N

Abstract:
1. A data output control apparatus comprising: a parameter storage unit for storing parameters for identifying packets; a parameter extractor for extracting parameters from inputted packet data; a comparator for performing a comparison between the parameters extracted by the parameter extractor and the parameters stored in the parameter storage unit, and outputting a comparison result signal indicative of the comparison; a controller for updating the parameters stored in the parameter storage unit, and outputting a control signal including information indicating a type of information packet to be replaced; a data replacement unit for detecting a target information packet in the inputted packet data to be a target of replacement based on the information included in the control signal, and performing replacement of the target information packet in the inputted packet data with replaced packet data based on the comparison result signal from the comparator and the control signal from said controller for updating, outputting the replaced packet data, and outputting, to said controller for updating, a replacement signal which includes information relating to the replaced packet data, wherein said controller for updating performs the updating of the parameters stored in the parameter storage unit based on the replacement signal; and an output controller for receiving the inputted packet data and the replaced packet data outputted from the data replacement unit, and performing output control for packet data to be finally outputted, based on the comparison result signal from the comparator, wherein said controller for updating receives, from the data replacement unit, the replacement signal including the information relating to the replaced packet data, and obtains, from the received replacement signal, data replacement information of a status of the replacement performed by the data replacement unit, and wherein said controller for updating controls the data replacement unit according to the obtained data replacement information of the status of the replacement performed by the data replacement unit.