Browse Prior Art Database

REAL TIME INTERRUPT Disclosure Number: IPCOM000024766D
Original Publication Date: 1981-Dec-31
Included in the Prior Art Database: 2004-Apr-03

Publishing Venue

Xerox Disclosure Journal


A copier controller using a microprocessor incorporates an interrupt which occurs when the AC line voltage passes through zero voltage. During the interrupt, all controller output latches are updated. All electromagnetic components within the machine can be either switched on or off when the AC line voltage is zero.