Appeal No. 1996-3996
Application 08/250,578
the same rotation speed as that of the SP mode, while the travel speed of tape 8 is reduced to
½ the travel speed of the SP mode.”
On pages 24 and 25 of the specification, Appellant discloses that, “timing control unit
20 simultaneously closes switches 19a and 19b during a period corresponding to one rotation
of every 2 rotations of rotary head cylinder 5 by which the head scanning position on tape 8 is
shifted by 2 track pitches 2t to simultaneously select head units 7a and 7b as record heads or
reproduction heads in order to maintain the width of each track scanned by magnetic head units
17a and 17b at one track pitch t when the LP mode is specified.”
On page 25 of the specification, Appellant discloses that, “recording and reproducing
processing unit 15 reduces each data of record data blocks D1, D2, D3, … to compress the
time base thereof to ½, whereby a plurality of record data blocks D1’, D2’, D3’, … having the
amount of information reduced to half are formed in time sequence, as shown in Fig. 10.” Then
on page 26, Appellant discloses that, "[t]he data of 2 channels … are simultaneously recorded
as shown in Fig. 9 as two continuous tracks of azimuth A and azimuth B, each having a width of
one track pitch t on tape 8, intermittently for every other rotation of cylinder 5."
Thus, the Appellant’s specification discloses an embodiment that meets the stated
objectives, and is commensurate in scope with the claimed invention. There is no evidence,
other than unsupported conclusory statements, of record that would demonstrate that the
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