Appeal No. 2000-1238
Application 08/566,638
The examiner's rejections are based on the following patent
and publications:
Holt et al. (Holt) 5,394,551 Feb. 28, 1995
Grady Booch, Object-Oriented Analysis and Design 88, 89, and 360-
65 (Addison-Wesley Publishing Company 1994) (Booch)
D. Decouchant et al., A Synchronization Mechanism for an Object
Oriented Distributed System, 152-59 (IEEE 1991) (Decouchant)
Claims 1, 3, and 4 stand rejected under § 103(a) for
obviousness over Holt in view of Decouchant and Booch.
Referring to Holt's Figure 1, Holt discloses using
semaphores in a data processing system having a plurality of
processing nodes which are interconnected by a communication
network and have access to shared resources, such as a shared
memory (col. 1, ll. 9-13). Figure 2 shows that each node
includes a processing unit 20 which has access to access shared
resources, such as areas of a shared memory (col. 2, ll. 16-42-
58). Furthermore,
[e]ach node includes a semaphore unit 22 which
controls access to the shared resources 21, using a set
of semaphore locations 23, a semaphore ownership table
24 and a semaphore queue 25. Each node has its own
local copies of the semaphore locations and the
semaphore ownership table, and has its own semaphore
queue.
Column 2, ll. 59-65. Each shared resource has a particular
semaphore location associated with it (col. 2, ll. 66-67). That
is, a different semaphore location is assigned to each shared
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