Appeal No. 1998-1319 Application No. 08/466,188 showing why such a timing correction circuit would have been obvious to the skilled artisan. Therefore, we cannot sustain the rejection of claims 24 through 27 over Aoki. As to claims 18 and 19, appellants' sole argument (Brief, page 9) is that Aoki does not suggest an X-direction driving circuit which outputs a constant voltage level during a horizontal scanning period. However, as we determined above, claims 18 and 19 do not specify that the constant voltage must be for the entire scanning period. The claims merely state that the output signals from the generator are at different constant voltage levels. In Aoki, the voltages output from the generator 11 are constant for some period of time, though not necessarily for an entire horizontal scanning period. Therefore, we are not persuaded by appellants' argument, and we will affirm the rejection of claims 18 and 19 over Aoki. For claim 23, appellants contend (Brief, page 10) that Aoki "fail[s] to teach or suggest a single tone voltage resulting from the selection of one of a plurality [sic] multi-tone image data which is held constant for one horizontal scanning period, and further fails to teach or suggest a tone voltage representing multi-tone image data." 12Page: Previous 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 NextLast modified: November 3, 2007