Abstract: An electronic device is provided. The electronic device includes a display, a communication circuit, a memory, and a processor operatively connected to the display, the communication circuit, and the memory, wherein the processor is configured to detect a pen event for the display to obtain a frequency, to establish a communication connection with an electronic pen using the communication circuit to obtain switch information and a device identification (ID), to obtain an electronic pen connection record from the memory, to determine a type of the electronic pen based on the device ID, to determine an operation mode of the electronic pen based on the switch information when the switch information is obtained, and to perform a predetermined function based on at least one of the frequency, the electronic pen connection record, the type of the electronic pen, or the operation mode.

Abstract: Provided is an electronic device and a voice recognition method. The electronic device includes: a memory configured to store at least one instruction, and a processor electrically connected to the memory. The processor is and configured to execute the at least one instruction to: obtain a sound signal corresponding to an utterance, and recognize a voice signal included in the sound signal, based on a determination that a portion of the sound signal corresponds to at least one of a plurality of noise categories, the plurality of noise categories corresponding to a plurality of environments in which a plurality of voice models of voice signals are generated.

Abstract: A frequency multiplier includes a capacitor circuit having a plurality of capacitors therein, and is responsive to a differential input signal applied to an inverting input node and a non-inverting input node thereof. A frequency multiplication circuit (FMC) is provided, which has a plurality of transistors therein. The FMC is configured to receive components of the differential input signal passing through the plurality of capacitors, and multiply a frequency of the components of the differential input signal. A plurality of inductor loads are provided, which are connected to an inverting output node and a non-inverting output node of the FMC, and are configured to convert a current signal generated by the FMC into a voltage signal.

Abstract: Provided is an electronic device that includes a first processor for receiving an audio signal, performing first voice recognition on the audio signal, and transferring a driving signal to a second processor based on a result of the first voice recognition. The second processor performs second voice recognition based on a voice signal by the first voice recognition or the audio signal, in response to the driving signal.

Abstract: Provided is an electronic device that includes a first processor for receiving an audio signal, performing first voice recognition on the audio signal, and transferring a driving signal to a second processor based on a result of the first voice recognition. The second processor performs second voice recognition based on a voice signal by the first voice recognition or the audio signal, in response to the driving signal.

Abstract: Provided is an electronic device that includes a first processor for receiving an audio signal, performing first voice recognition on the audio signal, and transferring a driving signal to a second processor based on a result of the first voice recognition. The second processor performs second voice recognition based on a voice signal by the first voice recognition or the audio signal, in response to the driving signal.