Browse Prior Art Database

Key Mouse Multifunction Device for Rack Mounted Personal Computers

IP.com Disclosure Number: IPCOM000115266D
Original Publication Date: 1995-Apr-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 2 page(s) / 76K

Publishing Venue

IBM

Related People

Garcia, R: AUTHOR [+3]

Abstract

Described is a hardware implementation to provide a key mouse multifunctional device for rack mounted Personal Computers (PCs). The implementation incorporates a mouse mode function without using additional space in rack mounted PCs by utilizing existing cursor keys.

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This is the abbreviated version, containing approximately 100% of the total text.

Key Mouse Multifunction Device for Rack Mounted Personal Computers

      Described is a hardware implementation to provide a key mouse
multifunctional device for rack mounted Personal Computers (PCs).
The implementation incorporates a mouse mode function without using
additional space in rack mounted PCs by utilizing existing cursor
keys.

      Typically, PCs utilizing the mouse functions required either
separate mouse devices or the mouse functions were incorporated
within the keyboard.  With the advent of the rack mounted PC, there
existed a need for incorporating the mouse functions onto the rack
mounted front panel.  Fig. 1 shows the use of the cursor keys in the
lower right section of the user interface panel.  The cursor keys
provide the mouse function when the mouse mode key is depressed ON.
When in mouse mode, the up, down, left, right cursor keys will move
the mouse prompt on the screen.  When mouse mode is depressed OFF,
the cursor keys function as normal pointer functions.

      Fig. 2 shows the logic circuit utilized for controlling the key
mouse multifunction capabilities.  Mouse mode determines how the
circuitry will translate the specific keys that are pressed.  If the
mouse mode is ON, then the keys that are pressed will be converted to
mouse commands.  If the mouse mode is OFF, the keys that are pressed
will be converted to keyboard commands.  In addition, the mouse mode
operation determines the transmitted signal path.