Appeal No. 97-2524 Application 08/255,128 claim 9 is essentially analogous to claim 1, we also sustain the rejection of claim 9. With respect to claim 2, appellants argue that Davis does not teach that the guidance instruction timing is dependent on the measured speed of the vehicle. We do not agree. Davis discloses that the navigator of the Back Seat Driver maintains an estimate of the current position and velocity of the car [column 25, lines 10-11]. Davis also discloses that the Back Seat Driver determines at what point to offer instructions to safely implement maneuvers based on the speed of the vehicle. We are of the view that this disclosure of Davis meets the broad recitation of claim 2 that the timing of instructions is dependent on the speed of the vehicle. Thus, we sustain the rejection of claim 2. With respect to claim 11, appellants merely assert that Davis does not disclose variable driver instruction timing preferences [brief, page 15]. In our view, the user- models created in Davis would clearly provide variable timing preferences consistent with the preferences initially established by the user acting as a “back seat driver.” 9Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NextLast modified: November 3, 2007