Abstract: The present invention relates to simultaneous computer screen and voice monitoring from a remote location, and particularly relates to synchronized telephone and screen monitoring of a computer workstation from a remote location, by use of a multiple bounding rectangles technique. Such monitoring is useful for providing training and assistance to those using such workstations, especially in connection with telephone use, can also be useful for providing an audit trial of significant on-screen events, or can be used as a trigger to initiate other separate events. In one embodiment, graphics primitives are used to determine localized screen changes which are periodically copied from the monitored workstation desktop and sent over a network to a remote, monitoring, workstation. In another embodiment, localized screen changes are determined by full screen comparison, and sent over a network to a remote, monitoring, workstation.

Abstract: An input buffer circuit includes an input buffer. The input buffer has an input adapted to be coupled to an address bus and a power down input. The input buffer circuit further includes power down circuitry adapted to be coupled to an address bus strobe and coupled to the power down input. When the address bus is detected to be idle by the power down circuitry, a power down signal is sent to the power down input. This powers down the input buffer.