Advanced Digital TV System

Abstract

A system for displaying electronic program guide information about a plurality of video items on a screen, the system including a display module to display a plurality of pages layering into the screen, each of the pages including a plurality of graphical panels associated with the video items, and a user input module to receive a user input to turn at least one of the pages such that the at least one page is peeled away from other ones of the pages in order to bring the graphical panels of the at least one page in or out of view, wherein the display module is operative to show the turning of the at least one page bringing the at least one page in or out of view. Related apparatus and methods are also described.

1 - 37 . (canceled) 
     
     
         38 . A screenshot compression system for compressing uncompressed screenshots, the system comprising an encoder including:
 an analyzing module to: analyze the screenshots to identify commonality among the screenshots; and create a reference frame based on the commonality of the screenshots; and   a compression module to compress the screenshots based on the reference frame.   
     
     
         39 . The system according to  claim 38 , wherein the screenshots include a plurality of macroblock boundaries, the analyzing module being operative to analyze the screenshots based on the macroblock boundaries. 
     
     
         40 . The system according to  claim 38 , wherein the compression module is operative to compress the screenshots into a stream including a plurality of compressed frames, the compressed frames including at least one of: an MPEG B-frame and an MPEG P-frame. 
     
     
         41 . The system according to  claim 38 , wherein the compression module is operative to compress the reference frame as an MPEG I-frame in the stream of the compressed frames. 
     
     
         42 . The system according to  claim 40 , wherein the reference frame is compressed and sent in a different stream to the stream of compressed frames. 
     
     
         43 . The system according to  claim 38 , wherein the analyzing module is operative to reorder a sequence of the screenshots so as to improve efficiency of the compression of the screenshots. 
     
     
         44 . A screenshot compression system for compressing uncompressed screenshots, the system comprising an encoder including:
 an analyzing module to: analyze the screenshots to identify commonality among the screenshots; and determine a suitable reference frame based on the commonality of the screenshots, the suitable reference frame being selected from a pre-existing frame; and   a compression module to compress the screenshots based on the reference frame.   
     
     
         45 . The system according to  claim 44 , wherein the compression module is operative to compress the screenshots into a stream including a plurality of compressed frames, the compressed frames including at least one of: an MPEG B-frame and an MPEG P-frame. 
     
     
         46 . The system according to  claim 44 , wherein the reference frame is part of a dictionary of images that resides in a set-top box. 
     
     
         47 . The system according to  claim 44 , wherein the compression module is operative to compress the screenshots into a stream including a plurality of compressed frames, the compressed frames including an MPEG I-frame and at least one of: an MPEG B-frame and an MPEG P-frame, the MPEG I-frame corresponding to the reference frame. 
     
     
         48 . The system according to  claim 44 , wherein the screenshots include a plurality of macroblock boundaries, the analyzing module being operative to analyze the screenshots based on the macroblock boundaries. 
     
     
         49 . The system according to  claim 44 , wherein the analyzing module is operative to reorder a sequence of the screenshots so as to improve efficiency of the compression of the screenshots. 
     
     
         50 - 58 . (canceled) 
     
     
         59 . A screenshot compression method for compressing uncompressed screenshots, the method comprising:
 analyzing the screenshots to identify commonality among the screenshots;   creating a reference frame based on the commonality of the screenshots; and   compressing the screenshots based on the reference frame.   
     
     
         60 . A screenshot compression method for compressing uncompressed screenshots, the method comprising:
 analyzing the screenshots to identify commonality among the screenshots;   determining a suitable reference frame based on the commonality of the screenshots, the suitable reference frame being selected from a pre-existing frame; and   compressing the screenshots based on the reference frame.   
     
     
         61 . (canceled)