KVM switch including a terminal emulator

Abstract

A method and system for converting the output of a communications port (e.g., a serial port or a USB port) into video signals representing the output of a terminal using a KVM switch. Upon receiving characters from the communications port, the system interprets the characters as terminal emulation commands and internally generates a representation of what a resulting terminal screen would look like. From that internal (digital) representation, the system produces analog outputs representing the terminal screen. The analog outputs are output on the monitor attached to the KVM switch.

1 . A KVM switch for connection to a monitor comprising: 
 a communications port configured to receive terminal commands;    a digital memory;    an analyzer configured to analyze the terminal commands and update a digital representation of a virtual terminal stored in the digital memory, based on the terminal commands;    a circuit configured to scan the digital memory and generate analog RGB signals and synchronization signals; and    analog drivers for driving the analog RGB signals out to the monitor.