Apparatus and method for processing additional information in display device

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;
• and
• d) providing a visual indication of said additional information updated at said step c) to a viewer;
• wherein said step d) includes the step of displaying said additional information updated at said step c) in an additional information display mode on the basis of an additional information list and change list stored in said memory;
• wherein said step d) further includes the step of displaying both additional information before change and additional information after change on the basis of a cancel item and substitute item of a change list stored in said memory if detailed information of said additional information updated at said step c) is selected in said additional information display mode.

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;
• and
• d) providing a visual indication of said additional information updated at said step c) to a viewer;
• wherein said step d) includes the step of displaying said additional information updated at said step c) in an additional information display mode on the basis of an additional information list and change list stored in said memory;
• and
• wherein said step d) further includes the step of displaying both additional information before change and additional information after change on a portion of a screen on the basis of a cancel item and substitute item of a change list stored in said memory if a scheduled program is changed while the viewer views a television.