Display processing apparatus

A display processing apparatus comprising:

• an input terminal of the HDMI standard, to which an external apparatus is connected;
• a detector configured to detect (i) a first signal which is included in an input signal supplied from the input terminal, and (ii) a second signal which is included in the input signal supplied from the input terminal and which is different from the first signal;
• and
• a generator configured to determine whether the external apparatus is in an operating state or in a standby state, and to generate an input signal selection screen representing the operating state of the external apparatus when the external apparatus is determined to be in the operating state.

A display processing apparatus comprising:

• an input terminal of the HDMI standard, to which an external apparatus is connected;
• a detector configured to detect (i) a first signal which is included in an input signal supplied from the first input terminal, and (ii) a second signal which is included in the input signal supplied from the first input terminal and which is different from the first signal;
• and
• a generator configured to determine a first state in which the external apparatus is in an operating state, a second state in which the external apparatus is in a standby state, or a third state in which the external apparatus is merely in a connected state, one of the first to third states being determined based on a detecting result of the detector, the external apparatus being selectable when the first state is determined, and the generator being configured to generate an input signal selection screen representing the first state.