Browse Prior Art Database

Auxiliary Device Connector for Notebook PC

IP.com Disclosure Number: IPCOM000104231D
Original Publication Date: 1993-Mar-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Sugi, H: AUTHOR

Abstract

Disclosed is a set of circuits and software that provides a pointing device and a key device with flexibility in connections. Mice and track balls are examples of pointing devices. Keyboards and numeric keypads are examples of key devices.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 62% of the total text.

Auxiliary Device Connector for Notebook PC

      Disclosed is a set of circuits and software that provides a
pointing device and a key device with flexibility in connections.
Mice and track balls are examples of pointing devices.  Keyboards and
numeric keypads are examples of key devices.

      The figure shows the system configuration which has components
such as Auxiliary Device Controller, Slave Micro Control Unit, and
PS/2* Auxiliary Device Connector.

      Through an ordinary Auxiliary Device Connector, up to two
external devices such as mouse, keyboard, and other pointing or key
devices are connectable.

      Auxiliary Device Controller is the conventional controller for
both mouse and keyboard.  This controller is connected to Slave Micro
Control Unit through signal lines such as Mouse Clock signal line,
Mouse Data signal line, Keyboard Clock signal line, and Keyboard Data
signal line.

      Slave Micro Control Unit is a one-chip microcomputer in which
the control program has been loaded.  The control unit is connected
to the ordinary Auxiliary Device Connector through the signals such
as A-Clock signal line, A-Data signal line, B-Clock signal line, and
B-Data signal line,

      The Auxiliary Device Connector is a portable PC connector.  A
set of A-Clock and A-Data comprises channel A and may be used for
connecting a key device or a pointing device.  A set of B-Clock and
B-Data comprises channel B may be used for connecting a key dev...