Patent ID: 7170520

Claim:
A display for sharing a display data channel, comprising: a microcontroller with a non-volatile memory for storing a firmware, having a two-wire interface and a switch-command output terminal; a memory for supporting display data channel standard, having a serial data terminal and a serial clock terminal; a first switch, having a data transmission connecting points set, a plurality of data selecting connecting points, and a switch-command receiving terminal, one of said plurality of data selecting connecting points being coupled to said two-wire interface, another one of said plurality of data selecting connecting points being coupled to said serial data terminal and said serial clock terminal, said switch-command receiving terminal being coupled to said switch-command output terminal, said data transmission connecting points set being coupled to a selected one of said plurality of data selecting connecting points based on a data received at said switch-command receiving terminal; and an interface connector, having an interface, said interface being coupled to an external device and to said data transmission connecting points set, thereby allowing the firmware stored in the non-volatile memory to be updated by the external device.