Image output system, image signal generation apparatus and recording medium

An image signal generation apparatus for generating an image signal, the image signal generation apparatus comprising:

• circuitry configured to:
• provide an image that is output to an image output unit and to generate an image signal of the image;
• switch among a plurality of channels to select a currently outputting channel that outputs the image signal to the image output unit, which is selected based on connection states of each of the plurality of channels;
• generate an information display screen related to the currently outputting channel;
• store a display state related to the information display screen, the display state specifying one of a “display ON” state and a “display OFF” state;
• switch to another channel of the plurality of channels when a connection state of the currently outputting channel changes and the display state changes from the “display ON” state to the “display OFF” state;
• and
• perform a process of releasing a connection corresponding to the currently outputting channel when a predefined error occurs in the currently outputting channel.

A non-transitory computer readable recording medium in which a program for causing a computer to execute an image signal generation method for generating an image signal is stored, the image signal generation method comprising:

• an image generation step of communicating with an image providing unit for providing an image that is output to an image output unit and generating the image signal of the image;
• a switching step of switching among a plurality of channels to select a currently outputting channel that outputs the image signal to the image output unit, which is selected based on connection states of each of the plurality of channels;
• an information display generation step of generating an information display screen related to the currently outputting channel;
• a display state storing step of storing a display state related to the information display screen, the display state specifying one of a “display ON” state and a “display OFF” state;
• and
• perform a process of releasing a connection corresponding to the currently outputting channel when a predefined error occurs in the currently outputting channel, wherein
• the switching step includes a step of switching to another channel of the plurality of channels when a connection state of the currently outputting channel changes and the display state changes from the “display ON” state to the “display OFF” state.