Abstract: A flexible printed circuit board can prevent itself from breaking without losing its flexibility, avoid significantly damaging the operation of an electronic device in the event that a part of the flexible printed circuit board is broken, and warn the user about the occurrence of a breakage. The flexible printed circuit board includes: a connecting portion that is formed at an end of a signal wire for transmitting an electric signal; a signal wiring portion in which a plurality of unidirectionally aligned signal wires are disposed in a vicinity of the connecting portion; a breakage detection portion in which the signal wires are not disposed and that is formed at one of side edges of the signal wiring portion; and a through hole formed between the breakage detection portion and the signal wiring portion.

Abstract: A multilayer flexible printed circuit board disclosed in the present application is a multilayer flexible printed circuit board in which a ground layer, an insulating layer and a signal wiring layer in which signal wiring is formed are laminated in sequence, with the multilayer flexible printed circuit board including a protruding portion protruding laterally, and a ground that is electrically connected to the ground layer being formed on at least one surface of the protruding portion, in order to have shielding properties that can cope with high speed signal transmission performed via the signal wiring layer.

Abstract: A multilayer flexible printed circuit board disclosed in the present application is a multilayer flexible printed circuit board in which a ground layer, an insulating layer and a signal wiring layer in which signal wiring is formed are laminated in sequence, with the multilayer flexible printed circuit board including a protruding portion protruding laterally, and a ground that is electrically connected to the ground layer being formed on at least one surface of the protruding portion, in order to have shielding properties that can cope with high speed signal transmission performed via the signal wiring layer.

Abstract: A flexible printed circuit board can prevent itself from breaking without losing its flexibility, avoid significantly damaging the operation of an electronic device in the event that a part of the flexible printed circuit board is broken, and warn the user about the occurrence of a breakage. The flexible printed circuit board includes: a connecting portion that is formed at an end of a signal wire for transmitting an electric signal; a signal wiring portion in which a plurality of unidirectionally aligned signal wires are disposed in a vicinity of the connecting portion; a breakage detection portion in which the signal wires are not disposed and that is formed at one of side edges of the signal wiring portion; and a through hole formed between the breakage detection portion and the signal wiring portion.

Abstract: An information processing apparatus which comprising a recording section for recording information in a removable recording medium, a switch, a computer, a power supply section for supplying power to the recording section and the computer, and an operating system which is software for controlling the computer. The power supply section controls power supply to the recording section and the computer individually and, only the power supply to the recording section is controlled ON/OFF corresponding to a state of the switch. The operating system conducts a processing based on a presumption that the recording section is not connected. Under the above-described configuration, when there is no access made to the recording section, the power supply is disconnected not only to the recording section but also to a constituent part used for making access to the recording section. Thus the advantage of low-power operation is further enhanced.

Abstract: An information processing apparatus which comprises a recording section for recording information in a removable recording medium, a switch, a computer, a power supply section for supplying power to the recording section and the computer, and an operating system which is software for controlling the computer. In which, the power supply section controls power supply to the recording section and the computer individually, only the power supply to the recording section is controlled ON/OFF corresponding to a state of the switch. The operating system conducts a processing based on a presumption that the recording section is not connected to. Under the above-described configuration, when there is no access made to the recording section, the power supply is disconnected not only to the recording section but also to a constituent part used for making access to the recording section. Thus the advantage of low-power operation is further enhanced.