Method and device for detecting presence or absence of validity in data needed to be updated

摘要

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.