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Browse Prior Art Database

Monitor Sharing System

IP.com Disclosure Number: IPCOM000109545D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Kobayashi, Y: AUTHOR [+2]

Abstract

Disclosed is a system in which a single CRT display is shared by two or more PC system units. (Image Omitted)

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Monitor Sharing System

       Disclosed is a system in which a single CRT display is
shared by two or more PC system units.

                            (Image Omitted)

      Two or more PC system units can automatically share a single
CRT display by means of a switching circuit.  If two PC system units,
PC_A and PC_B, are connected to a switching box, one of them can use
the CRT display.

      An H-sync monitor circuit samples the H-sync signal of PC_A
with a clock of about 1 KHz and determines whether PC_A is active.
If H- sync signal monitor 1 finds that PC_A is active, then the CRT
display is connected to PC_A; otherwise, the CRT display is connected
to PC_B.

      This switching operation is done automatically, and the PC user
has no need to pay attention to it.

      A keyboard and/or mouse device can also be shared in the same
way.