Patent ID: 8583846

Claim:
An extender for extending functions of an electronic apparatus, comprising: a connection terminal electrically connected to the electronic apparatus; input signal lines connected to the connection terminal so as to transmit a video signal that is supplied from the electronic apparatus via the connection terminal, wherein the number of the input signal lines complies with a certain video signal standard; a first video output terminal which complies with a first standard; a second video output terminal which complies with a second standard; and a signal converter configured to convert the video signal that is supplied from the electronic apparatus into a first video signal that complies with the first standard so as to output the first video signal to the first video output terminal and configured to convert the video signal into a second video signal that complies with the second standard so as to output the second video signal to the second video output terminal, wherein the signal converter comprises: a first converter configured to convert the video signal into the first video signal to output the first video signal to the first video output terminal; a second converter configured to convert the video signal into the second video signal to output the second video signal to the second video output terminal; and a switching module configured to switch between: electrical connection between the input signal lines and the first converter; and electrical connection between the input signal lines and the second converter, wherein the first video output terminal is configured to output a first connection recognition signal that complies with the first standard when a first video input terminal that complies with the first standard is connected to the first video output terminal, and wherein the switching module is configured to connect the input signal lines to the first converter when the switching module receives the first connection recognition signal, and wherein the switching module is configure to connect the input signal lines to the second converter when the switching module does not receive the first connection recognition signal.