Ex parte GUTTAG et al. - Page 11




          Appeal No. 96-0908                                                          
          Application 08/160,118                                                      

          pixels in register 52 and currently stored pixels in                        
          register 54 produces one bit in the result (mask) register 56               
          (which can also be called a status register or flag register).              
          Figure 4 shows a 32-bit field size which produces the two                   
          leftmost result bits in register 56 which are used in the                   
          merge operation in figure 5.  Figure 6 shows an 8-bit field                 
          size which produces eight result bits.  One of ordinary skill               
          would have appreciated from these two examples that the field               
          size can be the width of the whole register where the                       
          comparison produces one status bit.  Moreover, the claim                    
          language, as broadly interpreted, does not distinguish over                 
          Diefendorff.  Claim 1 recites "data registers, each storing a               
          predetermined number of data bits."  The "predetermined number              
          of data bits" does not have to be the total number of bits in               
          the register, but could be, for example, the 32-bit field in                
          figure 3.  Thus, this argument of appellants is not                         
          persuasive.                                                                 
               Appellants argue in the Auslander rejection (Br5):                     
          "Second, Diefendorff et al teaches storing the resultant of                 
          his pixel merge instruction in a register in general register               
          file 34 and not at an addressed location within memory as                   

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