Signal switching device, signal distribution device, display device, and signal transmission system

A signal distribution device comprising:

• a distributing unit operable to output a video signal to a part of or all of a plurality of output destination devices which are output destinations of a plurality of video signals;
• a memory for storing information;
• a plurality of reading channels for reading the information out of the plurality of output destination devices;
• a reading unit operable to read the information indicating a physical address of said signal distribution device and a status of the output destination device through said reading channel;
• a storing unit operable to store the information read by said reading unit into said memory;
• a read-out unit operable to read out the information stored in said memory;
• a read-out channel for outputting the information to an input source device which is an input source of video signal;
• and
• an outputting unit operable to output the information indicating the status of output destination device through said read-out channel.

A display device comprising:

• a selecting unit operable to select any one of a plurality of videos,
• a display unit operable to display the video selected by said selecting unit;
• a memory for storing information indicating a physical address of input source device which is an input source of video signal and a status of said display device;
• a read-out unit operable to read out the information stored in said memory;
• a read-out channel for outputting the information to the input source device;
• and
• an outputting unit operable to output the information indicating the status of said display device through said read-out channel.

A signal transmission system comprising:

• a video signal transmission device;
• a video signal processing device;
• and
• a video signal receiving device,
• wherein said video signal processing device includes,
• a memory for storing information,
• a reading channel for reading the information from said video signal receiving device,
• a reading unit operable to read the information indicating a physical address of said video signal processing device and a status of said video signal receiving device,
• a storing unit operable to store the information read by said reading unit into said memory,
• a read-out unit operable to read out the information stored in said memory,
• a read-out channel for outputting the information to said video signal transmission device, and
• an outputting unit operable to output the information indicating a status of said video signal receiving device through said read-out channel.

A signal switching method comprising:

• a selecting step for selecting any one of a plurality of video signal inputs;
• a reading step for reading information indicating an own physical address and a status of output destination device through a reading channel for reading the information out of the output destination device which is an output destination of a video signal;
• a storing step for storing the information read in said reading step into a memory;
• a read-out step for reading out the information stored in the memory;
• and
• an outputting step for outputting the information indicating the status of the output destination device through a read-out channel for outputting the information to a part of or all of a plurality of input source devices which are input sources of a plurality of video signal inputs.

A signal distributing method comprising:

• a distributing step for outputting a video signal to a part of or all of a plurality of output destination devices which are output destinations of a plurality of video signals;
• a reading step for reading information indicating an own physical address and a status of the output destination device through said reading channel for reading the information out of a part of or all of the plurality of output destination devices;
• a storing step for storing the information read in said reading step into a memory;
• a read-out step for reading out the information stored in the memory;
• and
• an outputting step for outputting the information indicating the status of output destination device through a read-out channel for outputting the information to an input source device which is an input source of video signal.

A program for causing a computer to execute:

• a selecting step for selecting any one of a plurality of video signal inputs;
• a reading step for reading information indicating physical address of a main device and a status of output destination device through a reading channel for reading the information out of the output destination device which is an output destination of a video signal;
• a storing step for storing the information read in said reading step into a memory;
• a read-out step for reading out the information stored in the memory;
• and
• an outputting step for outputting the information indicating the status of output destination device through a read-out channel for outputting the information to a part of or all of a plurality of input source devices which are input sources of a plurality of video signal inputs.

A program for causing a computer to execute:

• a distributing step for outputting a video signal to a part of or all of a plurality of output destination devices which is an output destination of a plurality of video signals;
• a reading step for reading information indicating an own physical address and a status of the output destination device through a reading channel for reading the information out of a part of or all of the plurality of output destination devices;
• a storing step for storing the information read in said reading into a memory;
• a read-out step for reading out the information stored in the memory;
• and
• an outputting step for outputting the information indicating a status of the output destination device through a read-out channel for outputting the information to an input source device which is an input source of a video signal.