Ex parte ERSKINE et al. - Page 5

          Appeal No. 96-0550                                                          
          Application 07/960,148                                                      

          730 F.2d 1452, 1463, 221 USPQ 481, 489 (Fed. Cir. 1984).                    
          However, an examiner may reject a claim if it is reasonable to              
          conclude that one skilled in the art would be unable to carry out           
          the claimed invention.  Eynde, 480 F.2d at 1370, 178 USPQ at 474.           
                    In the present case the examiner is of the opinion that           
          the disclosure fails to disclose how to use gray scale to soften            
          the edges of the image reflected on the windshield (Examiner's              
          Answer at page 3).                                                          
                    The specification states that a double image is                   
          produced when an image is projected onto an automotive windshield           
          due to the reflection of the projected image from both the inside           
          and outside reflecting surfaces of the windshield (Specification            
          at page 14).  The specification also discloses:                             
                    The effect of the double image can be                             
                    made less noticeable by "softening" the                           
                    edges of the projected image.  This                               
                    softening of the edge of the image is                             
                    achieved by surrounding the periphery of                          
                    the activated pixels on the deformable                            
                    mirror device with pixels that are                                
                    activated a smaller fraction of the                               
                    time, i.e., using gray scale.  The "next                          
                    nearest neighbor" pixel may be activated                          
                    with a smaller duty cycle than the                                
                    pixels that are "nearest neighbors" to                            
                    the periphery of the fully activated                              
                    pixels, causing the edges of the image                            
                    to be less distinct and the double image                          
                    to be less noticeable.  [Specification                            
                    at page 15]                                                       


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