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DIAGNOSTIC VERIFICATION OF VIDEO PROCESSING HARDWARE

IP.com Disclosure Number: IPCOM000026208D
Original Publication Date: 1990-Oct-31
Included in the Prior Art Database: 2004-Apr-05

Publishing Venue

Xerox Disclosure Journal

Abstract

In an electronic reprographic system having an Image Input Terminal (IIT) which directly feeds image data to video processing hardware, there is a need for a diagnostic technique which would assist in isolating faulty video processing components within the IIT. In general, the onboard tests utilized for such systems run under microprocessor control and therefore never operate the hardware components of the system at their normal operational bandwidth. Noise-related and transient type faults may only appear at the higher operational bandwidth, while other faults may occur only in the environment of an operational scan, especially when motors are actuated.