Appeal No. 2005-2282 Page 9
Application No. 09/505,807
"The free buffer semaphore, FBSEM mechanism 376, is used [to] signal to the
producer that one or more buffers in the buffer storage 372 are free and available for
further use. When no buffers are available, the producer thread is blocked on the
FBSEM mechanism 376." Id. at ll. 61-65. As applied to the claim, we find that the
FBSEM mechanism 376 is used to control the producer 310 to stop storing data in the
queue 372.
"Each time a client process releases a reference to a buffer, it clears its client bit
from the buffer mask 364. If the buffer mask 364 becomes zero at this time, indicating
the given buffer is now available, the client thread signals the FBSEM mechanism 376."
Col. 7, l. 65 - col. 8, l. 2. As applied to the claim, we find that the buffer mask 364 and
the FBSEM mechanism 376 are also used to control the producer 310 to be able to
store data in the queue 372.
"[M]ail slots 3400 through 340N-1 are used to facilitate notification of the
consumers . . . of the arrival of [data]." Col. 7, ll. 1-3. The consumers "listen to the
broadcast mail slots to wait for the arrival of [data]." Col. 8, ll. 6-8. "Each consumer . . .
comprises . . . a consumer MUTEX mechanism 324i, . . . [and] a consumer FBSEM
mechanism 326i. . . ." Id. at ll. 11-14. "The consumer MUTEX mechanism 324i and
FBSEM mechanism 326i essentially perform similar tasks as the . . . producer MUTEX
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