Power supply control circuit and computer game machine using such circuit

A power supply control circuit for controlling power supply to a circuit when an external unit is disconnected from a terminal unit to which said circuit is coupled, said power supply control circuit comprising:

• first detecting means for detecting whether or not said external unit is in a first state where said external unit is close to said terminal unit;
• second detecting means for detecting whether or not said external unit which has been already connected to said terminal unit is in a second state;
• and
• control means for, when said second detecting means detects that said external unit which has been connected to said terminal unit is not in the second state before said first detecting means detects that said external unit is not in the first state, discontinuing the power supply to said circuit and for, when said first detecting means detects that said external unit is not in the first state after said second detecting means detects that said external unit is not in the second state, reconnecting the power supply to said circuit.

A power supply control circuit for controlling power supply to a circuit when an external unit is connected to and disconnected from a terminal unit to which said circuit is coupled, said power supply control circuit comprising:

• first detecting means for detecting whether or non said external unit is in a first state where said external unit is close to said terminal unit;
• second detecting means for detecting whether or not said external unit which has been already connected to said terminal unit is in a second state;
• and
• control means for controlling the power supply to said circuit in accordance with detecting results obtained by said first detecting means and said second detecting means, said control means having:
• first means for, when said first detecting means detects that said external unit is in the first state before said second detecting means detects that said external unit is in the second state, discontinuing the power supply to said circuit and for, when said second detecting means detects that said external unit is in the second state after said first detecting means detects that said external unit is in the first state, reconnecting the power supply to said circuit;
• and
• second means for, when said second detecting means detects that said external unit which has been connected to said terminal unit is not in the second state before said first detecting means detects that said external unit is not in the first state, discontinuing the power supply to said circuit and for, when said first detecting means detects that said external unit is not in the first state after said second detecting means detects that said external unit is not in the second state, reconnecting the power supply to said circuit.

A computer game machine comprising:

• a cartridge slot into which a cartridge is to be connected;
• a main circuit, coupled to said cartridge slot, for carrying out a process in accordance with information supplied from said cartridge connected to said cartridge slot;
• first detecting means for detecting whether or not a cartridge is in a first state where said cartridge is close to said cartridge slot;
• second detecting means for detecting whether or not said cartridge which has been already connected to said cartridge slot is in a second state;
• and
• control means for, when said first detecting means detects that said cartridge is in the first state before said second detecting means detects that said cartridge is in the second state, discontinuing power supply to said main circuit and for, when said second detecting means detects that said cartridge is in the second state after said first detecting means detects said cartridge is in the first state, reconnecting the power supply to said main circuit.

A computer game machine comprising:

• a cartridge slot into which a cartridge is to be connected;
• a main circuit, coupled to said cartridge slot, for carrying out a process in accordance with information supplied from said cartridge connected to said cartridge slot;
• first detecting means for detecting whether or not a cartridge is in a first state where said cartridge is close to said cartridge slot;
• second detecting means for detecting whether or not said cartridge which has been already connected to said cartridge slot is in a second state;
• and
• control means for, when said second detecting means detects that said cartridge which has been connected to said cartridge slot is not in the second state before said first detecting means detects that said cartridge is not in the first state, discontinuing the power supply to said main circuit and for, when said first detecting means detects that said cartridge is not in the first state after said second detecting means detects that said cartridge is not in the second state, reconnecting the power supply to said main circuit.

A computer game machine comprising:

• a cartridge slot into which a cartridge is to be connected;
• a main circuit, coupled to said cartridge slot, for carrying out a process in accordance with information supplied from said cartridge connected to said cartridge slot;
• first detecting means for detecting whether or not a cartridge is in a first state where said cartridge is close to said cartridge slot;
• second detecting means for detecting whether or not said cartridge which has been already connected to said cartridge slot is in a second state;
• and
• control means for controlling the power supply to said main circuit in accordance with detecting results obtained by said first detecting means and said second detecting means, said control means having:
• first means for, when said first detecting means detects that said cartridge is in the first state before said second detecting means detects that said cartridge is in the second state, discontinuing the power supply to said main circuit and for, when said second detecting means detects that said cartridge is in the second state after said first detecting means detects that said cartridge is in the first state, reconnecting the power supply to said circuit;
• and
• second means for, when said second detecting means detects that said cartridge which has been connected to said cartridge slot is not in the second state before said first detecting means detects that said cartridge is not in the first state, discontinuing the power supply to said main circuit and for, when said first detecting means detects that said cartridge is not in the first state after said second detecting means detects that cartridge is not in the second state, restarting the power supply to said circuit.