Appeal No. 95-3290
Application 08/062,156
providing a logical block counter;
providing in memory a block map formed as an information
table defining a plurality of entry points corresponding to a
plurality of entry point intervals to be defined, for each
entry point said block map defining its location on the tape
in terms of said categorizing marks and a logical block
number; and
upon receiving a command to locate said desired logical
block, checking said block map to determine a closest entry
point which directly precedes the desired logical block to be
located, using the categorizing mark counter to locate said
nearest entry point, and then without any further referral to
another block map serially reading the logical blocks directly
following the entry point in order to count each logical block
which is traversed, and incrementing the logical block counter
until it reaches said logical block number of said desired
logical data block.
The examiner relies on the following references:
Klumpp et al. (Klumpp) 4,472,750 Sep. 18, 1984
Usui 4,656,535 Apr. 07, 1987
Hood et al. (Hood) 4,747,126 May 24,
1988
Osterlund 4,775,969 Oct. 04, 1988
Claims 1-5, 7 and 9-15 stand rejected under 35 U.S.C.
§ 103. As evidence of obviousness, the examiner offers
Klumpp in view of Osterlund with respect to claims 7, 9 and
11-15, and adds Usui with respect to claims 1-5 and 10.
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