Abstract: A method and apparatus for improving the efficiency of providing updated data over a transmission medium. Each data has associated information indicating the presence or absence of validity data. An absence of validity data indicates that the data does not need to be updated. The presence of validity data allows only that data which needs updating to be transferred on the transmission medium, thereby improving its performance.
Abstract: In a data providing method and device thereof for providing data in a simple manner at a highly efficient transmission rate, first data of a configuration where information relating to a valid period of data is added to the data is made and provided, with the first data being categorized and stored in accordance with the information. Information for second data of the same configuration as the first data is then recognized and the first data is replaced with the second data in accordance with results of the recognition.
Abstract: In a data providing method and device thereof for providing data in a simple manner at a highly efficient transmission rate, first data of a configuration where information relating to a valid period of data is added to the data is made and provided, with the first data being categorized and stored in accordance with the information. Information for second data of the same configuration as the first data is then recognized and the first data is replaced with the second data in accordance with results of the recognition.
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