Appeal No. 96-2696
Application 08/167,415
30, lines 17-18) and its operation is described with the aid
of Figures 13(a)-(e). Figure 13(b) shows a received encoded
bit stream in which each byte is represented as a hexagon
(Spec. at 31, lines 21-24), identified either by the last two
digits of its code (00 or 01) or by the letters "stf,"
apparently representing the staffing code. In Figure 13(c),
which shows these bytes after conversion in M/8 converter 51
and a one-clock cycle delay in 8-bit shift register 52, the
received bytes are labeled C -C . Comparing these bytes to the
1 9
format of Figure 9, byte C (00) corresponds to the
1
synchronization code part of the adjusting data, bytes C -C
2 5
(all 00) correspond to the invalid codes of the adjusting
data, bytes C -C (00, 00, 01) correspond to the synchronous
6 8
code part of the staffing start code, and byte C (stf)
9
corresponds to the staffing code part of the staffing start
code. The circuitry of Figure 12 allows only the first three
00 bytes (C -C ) of the series of seven 00 bytes (C -C ) to be1 3 1 7
written from the 8/L converter 53 to the receiving buffer 32
(not shown) by inhibiting further writing until detection of
the first non-zero byte, which is an 01 byte (C ), at which
8
time writing resumes, thereby allowing the writing of 01 byte
- 9 -
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