Computer system with a common audio input for its audio circuitry
AssigneeSamsung Electronics Co., Ltd.
InventorSung-Dong Yang
Life of this patent
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Abstract
A portable computer system includes an audio circuit and a common audio input socket coupled to the audio circuit. This audio circuit has a controller and two amplifiers. Two types of external audio devices is to be coupled to the common audio input socket. The controller controls the two amplifiers alternately depending upon the audio type of the external audio device coupled to the common audio input socket. In a preferred embodiment, a first amplifier is provided for amplifying stereo audio signals and a second amplifier for amplifying a mono audio signal. When the controller detects a mono audio device, the microcontroller disables the first amplifier. Detecting a stereo audio device, the controller disables the second amplifier.
Claims23
A computer system having an audio circuit, comprising:
- an audio input socket for electrically connecting either of a first type audio device and a second type audio device, the first and second type audio devices generating a first and second type audio signals;
- a first amplifier for amplifying the first type audio signal;
- a second amplifier for amplifying the second type audio signal;
- and
- a controller for checking whether the first type audio device is coupled to the audio input socket or the second audio device is coupled to the audio input socket, and alternately controlling the first and the second amplifiers depending upon the alternate connection of the first and second type audio devices, said controller always disabling only one of said first and said second amplifier based on whether said first or said second type audio signal is input to said audio input socket.
A sound card for a computer that automatically recognizes and receives mono and stereo signals, comprising:
- an audio input socket for connecting either mono or stereo type devices;
- a first amplifier for amplifying mono type audio signals;
- a second amplifier for amplifying stereo type audio signals;
- and
- a microcontroller for switching off said second amplifier when a mono type device is connected to said audio input socket and for switching off said first amplifier when a stereo type device is connected to said audio input socket.
A computer system having a sound card, comprising:
- an audio input jack having a right input channel and a left input channel, said audio input jack accommodating both mono type devices as well as stereo type devices, said right channel of said audio input jack being grounded when a mono type device is connected to said audio input jack;
- a first amplifier for amplifying stereo type device audio signals;
- a second amplifier for amplifying mono type device audio signals;
- and
- a controller for switching off said first amplifier when a mono type device is connected to said audio input jack and switching off said second amplifier when a stereo type device is connected to said audio input jack, said controller being controlled by a voltage generated at said right input channel of said audio input jack.
A computer system having an audio circuit, comprising:
- an audio input socket for electrically connecting either of a first type audio device and a second type audio device, the first and second type audio devices generating a first and second type audio signals;
- a first amplifier for amplifying the first type audio signal;
- a second amplifier for amplifying the second type audio signal;
- and
- a controller for checking whether the first type audio device is coupled to the audio input socket or the second audio device is coupled to the audio input socket, and alternately controlling the first and the second amplifiers depending upon the alternate connection of the first and second type audio devices, each of said first and said second amplifiers having two inputs and one output, one of said two inputs being a control signal that is used to disable the amplifier, said control signal not being an audio signal.
Dependencies are inferred from the claim text.