Patent ID: 6209131
Filing Date: 2001-03-27
Classification: H04N

Abstract:
In a display device which has a memory for storing various additional information received from a broadcasting station, a method for processing said additional information, comprising the steps of:a) comparing information newly received from said broadcasting station with previously received additional information to determine whether they are different from each other;b) detecting whether the newly received additional information is a substitute for the previously received additional information, if said newly and previously received additional information are different from each other;c) updating previous redundant additional information stored in said memory to said newly received additional information if said newly received additional information is the substitute for said previously received additional information; andd) providing a visual indication of said additional information updated at said step c) to a viewer;wherein said step b) includes the steps of:b-1) detecting whether said newly received additional information is present in an additional information list stored in said memory and then determining whether a play time of an input program among said newly received additional information is within the range of a channel play time, if said newly received additional information is not present in said additional information list; andb-2) retrieving information on a previous redundant program having a time redundancy with said play time of said input program from said additional information list if said play time of said input program is within the range of said channel play time.