Boots – shoes – and leggings
Patent
1993-02-10
1995-10-10
Lee, Thomas C.
Boots, shoes, and leggings
395500, 395883, 395650, 395284, 395886, 364238, 3642383, 364240, 3642603, G06F 300, G06F 900
Patent
active
054577853
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 interface 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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"Peripherals Now Supported by Connectivity Bar" Oct. 13, 1992 Computing Canada.
"EISA Expansion Box Enhances HP's 9000 Series 700s" Aug. 1992 HP Professional.
"Interpreters Removable Drive Rivals Bernoulli Performance" Sep. 16, 1992 PC Week Methurn, Dave.
Dornier Pascal
Jocobs William S.
Kikinis Dan
Seiler William J.
Boys Donald R.
Elonex Technologies, Inc.
Lee Thomas C.
Weinstein Marc K.
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