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Discrimination of Type of Display Device

IP.com Disclosure Number: IPCOM000040145D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Inada, H [+details]

Abstract

This article describes a discrimination between types of display devices, i.e., color and monochrome types, connected to a display controller. The discrimination is performed by connecting a feedback circuit at a blue signal output terminal of the display controller. The feedback circuit supplies a feedback signal indicating the type of the display device to the display controller. In the case where a color display device or a monochrome display device is connected to a display controller, it is necessary for the display controller to discriminate between the two types of connected display devices, i.e., color and monochrome.