Ex Parte THOMAS - Page 7




          Appeal No. 2001-0526                                       Page 7           
          Application No. 08/960,236                                                  


          a X-Y location.  We further find that the contact point                     
          configuration is identified because Verrier discloses that during           
          initialization of the writing end of the stylus, the X-Y location           
          and the Z separation values for the stylus for the writing end of           
          the stylus 20 have their measured values depend on the particular           
          stylus geometry and the overlay geometry of the tablet (col. 10,            
          lines 22-31).  Since the position detection is based in part upon           
          the stylus geometry, the contact point configuration during a               
          touch down of the stylus is inherently identified in order for              
          the position signals to be radiated from the conductors of the              
          tablet, which in turn are picked up by antenna 29.                          
               With respect to the limitation “identifying a user mode                
          based on the identified contact point configuration" we note that           
          the user modes disclosed by Verrier are “write" and “erase."  In            
          Verrier, the user modes are determined by the signals supplied to           
          antenna 62 by the write and erase circuitry of the stylus.                  
          Because the shape of the contact portions 38, 38' for the write             
          and erase contact portions of the stylus have the same                      
          configuration, the user input mode cannot be based upon the                 
          identified contact point configuration.                                     
               We are not persuaded by the examiner's assertion (answer,              
          page 4) that the limitation is met by Verrier's identifying the             







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