US 6,473,130 B1 · Method and apparatus for displaying sub-pictures

Abstract

A picture display apparatus displays a sub-picture together with a main picture. The apparatus includes a detector for detecting a state of the main picture from an encoded main picture signal. A signal processor decodes the encoded main picture signal, signal-processes an input sub-picture signal and the decoded main picture signal, in order to display the main picture together with sub-picture, and output the processed picture signal. A controller controls the operation of the signal processor based upon the main picture state detected in the detector so that the sub-picture is discerned from the main picture. Thus, the sub-picture can be always distinctively discerned irrespective of the picture state of the main picture by varying the display state of the sub-picture according to the image complexity and the movement degree of the main picture.

Claims18

Dependent claims

A picture display method of displaying a sub-picture together with a main picture, the picture display method comprising steps of:

detecting, from an encoded main picture signal, a state of a main picture and outputting state information indicative of the detected state of the main picture, wherein the state information represents at least one of a spatial complexity of the main picture and a temporal movement degree of the main picture as detected from the encoded main picture signal;
decoding the encoded main picture signal;
and
signal-processing an input sub-picture signal and the decoded main picture signal based upon said state information, to display a sub-picture and the main picture so as to discern the sub-picture from the main picture.

1 more element

Dependencies are inferred from the claim text.

Method and apparatus for displaying sub-pictures

Life of this patent

Method and apparatus for displaying sub-pictures

Life of this patent

Abstract

Claims18