Boots – shoes – and leggings
Patent
1995-06-30
1997-04-08
Lee, Thomas C.
Boots, shoes, and leggings
395821, 395825, 395882, 395883, 395500, 364238, 364239, 3642401, 3642404, G06F 1300, G06F 1312, G06F 1320, G06F 1336
Patent
active
056196598
ABSTRACT:
A bus interface system for expanding the I/O capability of a portable computer utilizes a parallel port connector with master interface circuitry connected to the internal ISA I/O bus of the portable computer and driving a 25-conductor Centronics-type cable as an intermediate bus. The master interlace circuitry is device-driver-transparent, and multiplexes address data, and control information over a byte-wide avenue of the intermediate bus according to premapped state translation tables. In a preferred embodiment a single peripheral I/O device comprising a slave circuitry may be connected to the 25-pin port, and the slave circuitry demultiplexes the intermediate bus states, providing a synthesized sub-set of ISA states to drive the peripheral device. In another embodiment a docking box comprises a bus with multiple I/O ports, such as a network port, a COM serial port, and additional floppy and hard disk drives. Power circuitry is provided for driving a single connected peripheral device, and for recharging a docked portable computer.
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Dornier Pascal
Jocobs William S.
Kikinis Dan
Seiler William J.
Boys Donald R.
Elonex IP Holdings Ltd.
Kim Ki S.
Lee Thomas C.
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