Appeal No. 96-2696
Application 08/167,415
where LSB is set to logic 1 and the other bits are set to
logic 0. Moreover, the attribute code is set to one byte
where the code indicating the data concerning the slice
data such as the attribute of [the] corresponding slice
is arranged. Therefore, the slice start code is formed
by the data of 4 bytes in total (32 bits).
This slice start code is added in a unit of [a]
slice without relation to [a] shortage of the data to be
transmitted.
The invalid code is added in such a manner that the
data where all the bits are set to logic 0 is added
before the slice start code as required in unit[s]
of the byte (8 bits). This code is added in units
of [a] slice only when there is a shortage of data
to be transmitted.
Fig. 4 illustrates an invalid code to be added to a
c block [identified in the figure as a macro block].
Namely, in this case, [a] total of 11 bits where [the]
upper 7 bits are set to logic 0 and [the] lower 4 bits to
logic 1 are considered as a unit of the invalid code and
this invalid code is added before a valid code of the
macroblock as many as the predetermined number of units.
[Spec. at 13-14.]
Where invalid code is added to the data of a macroblock
in the manner shown in Fig. 4, the transmission data control
circuit 111 of Figure 1 can take the form shown in Figure 5
(Spec. at 14, lines 19-22). In figure 5, MUX (multiplexer)
122, which is controlled by a controller 124, receives the
output of macro block invalid code generating circuit 123 and
the output of N/M converter 121, which receives data from
transmitting or send buffer 7 (Spec. at 14, line 22 to p. 15,
line 6). Thus, the multiplexer combines data from the N/M
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Last modified: November 3, 2007