Ex Parte Lan et al - Page 8




          Appeal No. 2004-1689                                                        
          Application 09/912,132                                                      

          mode, full-size scan lines are retrieved from the buffer                    
          storage 53 and fed through the decimation unit 82 where B frames            
          are re-expanded for display and the other scan lines for I and P            
          frames are unchanged (col. 10, line 60, to col. 11, line 5).  It            
          appears from the arrow from 82 to 84 that the full-size scan                
          lines are fed into the scan line video buffers 84 and then to               
          vertical and horizontal up-sample logic 94.  In a scaling display           
          mode, scaled scan lines are retrieved from frame buffer storage             
          53 and fed into scan line video buffers 84 to vertical and                  
          horizontal up-sample logic 94 (col. 11, lines 6-12).  "Upsample             
          controls are received from display fetch unit 92, which                     
          coordinates letterbox formatting, SIF upsampling, 4:2:0 to 4:2:2            
          upsampling, and flicker reduction (in accordance with the                   
          principles of the above-incorporated [U.S. Patent 5,973,740])."             
          (Col. 11, lines 12-17).  (Note the control line from unit 92 to             
          up-sample logic 94.)  It appears that up-sampling is performed              
          for both normal (full-size) and scaled lines.  As explained in              
          U.S. Patent 5,973,740 ('740 patent), referred to by its                     
          application number in Campisano, up-sampling might be to change             
          material that is encoded in a 16:9 aspect ratio into a                      
          conventional 4:3 aspect ratio by expanding in a 12:16 rate ('740            
          patent, col. 12, line 62, to col. 13, line 2; col. 13,                      
          lines 17-18).  A 4:3 aspect ratio can be converted to a 16:9                
          aspect ratio by down-sampling the vertical samples by 3/4 ('740             

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