Electronic apparatus
AssigneeKabushiki Kaisha Toshiba
InventorJunko Shimoharada
Life of this patent
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Abstract
According to one embodiment, an electronic apparatus includes a speaker, a terminal, an amplifier, a battery, a power supply circuit, and a controller. The terminal is configured to input an audio signal from an external device. The amplifier is configured to amplify the audio signal which is input from the terminal, and to output audio from the speaker. The power supply circuit is configured to supply power from the battery to the amplifier. The controller is configured to control the power supply circuit, based on a residual capacity of the battery and a preset battery level, in order to supply the power to the amplifier when the electronic apparatus is in a non-operative state.
Claims12
An electronic apparatus comprising:
- a speaker;
- a terminal configured to receive an audio signal from an external device;
- an amplifier configured to amplify the audio signal received from the terminal, and to output the amplified audio signal to the speaker;
- a battery;
- a power supply circuit configured to supply power from the battery to the amplifier when no external power is supplied;
- a switch configured to switch between a first path by which a sound controller operating when the electronic apparatus is in an operative state is connected to the amplifier and a second path by which the terminal and the amplifier are connected to each other without passing through the sound controller;
- and
- a controller configured to change the switch over to the second path when the electronic apparatus is in a first non-operative state or a second non-operative state, to control power supply from the power supply circuit to the amplifier based on residual capacity of the battery and a preset first battery level, when the electronic apparatus is in the first non-operative state, and to control the power supply from the power supply circuit to the amplifier, based on the residual capacity of the battery and a preset second battery level different from the preset first battery level, when the electronic apparatus is in the second non-operative state.
A method of amplifying an audio signal when an electronic apparatus is in a non-operative state, comprising:
- connecting a plug connected to an external device to a terminal of the electronic apparatus in a first non-operative state and a second non-operative state, wherein the terminal is configured to receive an audio signal from the external device,
- determining whether a residual capacity of a battery is greater than a preset battery level or whether the electronic apparatus is connected to an external power source,
- switching between a first path by which a sound controller operating when the electronic apparatus is in an operative state is connected to an amplifier and a second path by which the terminal and the amplifier are connected to each other without passing through the sound controller;
- supplying power to an amplifier when the residual capacity of the battery is greater than a first battery level in the first non-operative state or when the electronic apparatus is connected to the external power source;
- supplying power to the amplifier when the residual capacity of the battery is greater than a second battery level different from the first battery level in the second non-operative state or when the electronic apparatus is connected to the external power source;
- and
- amplifying the audio signal received from the terminal by use of the amplifier and outputting the amplified audio signal to the speaker.
Dependencies are inferred from the claim text.