Abstract: An information processing apparatus includes a jack, a noise-canceling section, a judgment section, and a first regulation section. The jack is connectable with a plug of a headphone including a microphone, outputs a first signal to the headphone, and inputs a second signal from the microphone. The noise-canceling section generates a third signal that cancels a noise component around the headphone based on the second signal input from the jack and enables an operation of superposing the third signal on the first signal. The judgment section judges whether at least one of the first signal and the second signal exceeds a predetermined level. The first regulation section regulates an operation of the noise-canceling section when the judgment section detects that the predetermined level is exceeded.

Abstract: An information processing apparatus includes a jack, a noise-canceling section, a judgment section, and a first regulation section. The jack is connectable with a plug of a headphone including a microphone, outputs a first signal to the headphone, and inputs a second signal from the microphone. The noise-canceling section generates a third signal that cancels a noise component around the headphone based on the second signal input from the jack and enables an operation of superposing the third signal on the first signal. The judgment section judges whether at least one of the first signal and the second signal exceeds a predetermined level. The first regulation section regulates an operation of the noise-canceling section when the judgment section detects that the predetermined level is exceeded.

Abstract: The present invention provides a liquid crystal display device that can regulate a visual field angle and a contrast that matches a using state. There is provided a liquid crystal display device having a plurality of scanning lines and a plurality of signal lines provided by intersecting the scanning lines and having pixel capacitors including a pixel electrode, a common electrode and a liquid crystal layer, formed at the intersecting portions of the plurality of the scanning lines and the plurality of the signal lines, which includes a common voltage regulating unit that supplies a common electrode voltage to the common electrode, a storage unit that stores a parameter for generating a common electrode voltage value for obtaining a predetermined view angel distribution for every view angle, and a control unit that controls the common electrode voltage generated by the common voltage regulating unit by selecting the parameter stored in the storage unit.