Boots – shoes – and leggings
Patent
1988-12-29
1991-10-29
Hecker, Stuart N.
Boots, shoes, and leggings
364228, 3642286, 3642403, 3642624, 3642627, 3642628, 364270, 3642703, 3642705, 364271, 3642716, G06F 104, G06F 112, G06F 900
Patent
active
050620410
ABSTRACT:
An information processing system includes a first data processing device 10 and a second data processing device 12 each of which is capable if independent instruction execution during instruction cycles having a period which is a multiple of a periodic unit clock signal period. The devices are disclosed to be an arithmetic unit and a central processor which are coupled together by an interface 14. Each of the data processing devices include a clock generation device 180 having an input coupled to the unit clock signal for generating an associated instruction cycle clock signal which has a period which is a multiple of the unit clock signal period. The clock generation device is further operable for suspending the generation of the instruction cycle clock signal and for beginning a next instruction cycle clock signal in synchronism with a transition of the unit clock signal. The devices 10 and 12 each request synchronization of their respective clocks which are then automatically synchronized to the other devices clock during a transition of the unit clock, allowing for instructions and operands to be synchronously passed between the central processor to the arithmetic unit.
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Hecker Stuart N.
Pappas George C.
Shanahan Michael H.
Wang Laboratories, Inc.
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