COMPUTER MONITOR PROVIDED WITH TWO FUNCTIONAL OPERATION SWITCH AND METHOD PROVIDING DIFFERENT FUNCTIONS FOR SCREEN OPERATION SWITCH OF COMPUTER MONITOR

摘要

PROBLEM TO BE SOLVED: To execute an extended operation function under USB(Universal Serial Bus) standard compliant interface. SOLUTION: A computer monitor 1 connected to a computer 2 and used includes multiple screen operation switches SW1, SW2, SW3, an I/O circuit 12 connected with a computer, and a processing device 11 detecting a USB standard compliant interface if it is set between the I/O circuit and the computer. When the USB standard compliant interface is not detected, if the screen operation switch is operated, the processing device executes an OSD(On-Screed Display) routine for hardware to adjust screen characteristics of the computer monitor. When the USB standard compliant interface is detected, the processing device generates a command, assigns it to either of the operated screen operation switches, and transmits it to the computer through the USB standard compliant interface.