Ex parte GEAGHAN - Page 8




          Appeal No. 1997-0412                                                        
          Application No. 08/434,558                                                  


               The examiner further rejects claims 18, 21, and 28 as                  
          being anticipated by Togashi.  The examiner refers (Answer,                 
          page 5) to column 7, lines 42-44 of Togashi, wherein Togashi                
          states that "display readout, together with input of data by                
          means of a light pen or other light generating means, can be                
          performed simultaneously," to support his assertion that the                
          signals of Togashi can be superimposed.  Claim 18 requires                  
          that the positioning signals be superimposed on the display                 
          electrode signals, not on the display readout.  Viewing the                 
          remainder of the paragraph in column 7 referenced by the                    
          examiner, we find that "[d]riving of the row and column                     
          electrodes is performed cyclically, on a time-sharing basis,                
          during a basic frame period denoted as T.  This basic frame                 
          period is divided into a display frame period T  and a light                
                                                         1                            
          detection frame period T ."  In other words, the positioning                
                                  2                                                   
          signals are not simultaneous with or superimposed on the drive              
          signals, but rather are in a separate frame period.                         
          Therefore, Togashi does not anticipate the claims.                          
               In Piliavin, which the examiner also applies against                   
          claims 18, 20, 21, and 28, "a finger is an input means"                     
          (Answer, page 5).  Although a finger may be an input means, it              

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