Appeal No. 2005-2282 Page 8
Application No. 09/505,807
In Figure 4 of the reference, "the IPC channel system architecture 300 is shown."
Col. 6, l. 9. More specifically, "[t]he IPC channel system architecture 300 comprises a
producer 310, N consumers 3200 through 320N-1, and the IPC channel 330." Id. at ll. 12-
14. It is uncontested that Woodring's producer and consumers respectively teach the
claimed source and consumers.
In the IPC channel system architecture 300, a "buffer storage 372 stores the
actual information stream that is to be accessed by the client consumers. The buffer
storage 372 may contain a block of video data, a segment of audio, a block of text data,
or any other data being transferred between the producer and the consumers." Col. 7,
ll. 38-42. It is uncontested that Woodring's buffer storage 372 teaches the claimed
queue in which data are stored from which data are consumed.
Also in the IPC channel system architecture 300, a "storage manager 350
comprises . . . a buffer mask 364, . . . an update MUTEX mechanism 374, and an IPC
free buffer semaphore (IPC FBSEM) mechanism 376." Id. at ll. 23-27. "The update
MUTEX mechanism 374 provides mutually exclusive access by the producer and all
consumers to the management data structures. . . . In other words, if the producer, or
any consumer, needs to read or update the buffer masks . . . , they must first acquire
exclusive ownership of the MUTEX 374." Id. at ll. 52-58.
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