Appeal No. 1998-3390
Application No. 08/480,934
BACKGROUND
The appellant's invention relates to a method for recording and reproducing a digital
signal. The methodology inserts identification data into a timing area in each track to
identify the corresponding data structure to be used for the track and to further insert
additional identification data identifying respective data structures to be used in the
respective areas throughout the track at these selected areas. The additional data
structures are independent of the initial data structure identified in the timing area. An
understanding of the invention can be derived from a reading of exemplary claim 15, which
is reproduced below.
15. In a method for digitally recording and reproducing information data in
successive oblique tracks on a recording tape by means of rotary heads
scanning said tracks in succession, the improvement comprising the steps
of:
providing a timing area adjacent only an entrance end of each of said
tracks at which said heads first come into scanning contact with said tape;
repetitively recording in said timing area of each of said tracks, at
respective locations spaced apart in said timing area in a direction of said
scanning along the respective track, identification data comprised of at least
three bits which stipulate a corresponding data structure for the track
including a number of additional areas following said timing area in a
direction away from said entrance end of the respective track for the
recording by said heads in said additional areas of plural blocks of
respective information data and data ancillary thereto; and
repetitively adding, to said ancillary data of said blocks recorded in each
of said additional areas, respective additional identification data which have
the same data structure as said identification data recorded in said timing
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