Patent ID: 6339786
Filing Date: 2002-01-15
Classification: G06F,H04N,Y10S

Abstract:
A terminal device performing prescribed processing on data distributed by a data broadcasting station distributing, at predetermined time intervals, a series of data that are identical with each other and updated with time, comprising:a receiving part receiving the data transmitted by said data broadcasting station; a management part creating and managing management information as to the data received by said receiving part; a storage device storing the data for which the management information has been created by said management part, said management information including a retention coefficient for determining whether the data stored in said storage device is deleted or not; and a reference part outputting the data requested by a user, wherein said management part decrements the retention coefficient stored in said storage device at a prescribed timing while incrementing the retention coefficient of the data outputted by said reference part, deletes, when the managed retention coefficient is decremented to a prescribed value, the corresponding data from said storage device, deletes, when new data identical to old data in said storage device is inputted to the management part, the old data from said storage device, and uses the management information for the deleted old data as management information for the new data.