Appeal 2007-2127
Reexamination Control No. 90/006,621
Although the programmer could enable interrupts once the interrupt routine
starts, since the '604 patent does not disclose inserting an enable interrupt
(EI) instruction until just before returning, the editor is not interruptible.
Patent Owner does not argue in this appeal that the editor is
interruptible. Instead, Patent Owner argues that the editor does not have to
be interruptible to be a "thread."
b. Operation of the 1982 compiler/editor
The differences between "preemptive multithreading" and Patent
Owner's 1982 interrupt system are illustrated in the drawing below.
71
Page: Previous 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 Next
Last modified: September 9, 2013