Abstract: A meat-aging apparatus is disclosed. The meat-aging apparatus comprises: a photographing unit for photographing meat stored in the meat-aging apparatus; an illumination unit for irradiating light to the meat; a storage unit for storing recipe information for aging the meat according to the type or state of the meat; and a processor for determining the type or state of the meat on the basis of a photographed image, and controlling the illumination unit to irradiate light to the meat according to the recipe information corresponding to the determined type or state of the meat in order to age the meat.

Abstract: The disclosure relates to a method of supporting monitoring of an encrypted data communication session of a first device, the method comprising: receiving a signal for initiating a communication session with a second device; generating an encryption key for encryption of the communication session; determining whether a monitoring signal is received for the communication session; and transmitting information about the encryption key to the second device by using a predetermined packet based on the determination.

Abstract: An electronic device may include a processor, a communication module to establish a wireless link with an output device, and a transmit buffer in which an audio packet to be transmitted to the output device through the wireless link is stored. The processor may be configured to control the communication module to transmit an audio packet, which is encoded at a first bit rate, stored in the transmit buffer to the output device, to store, in the transmit buffer, an audio packet, which is encoded at a second bit rate lower than the first bit rate, when a state of the transmit buffer fails to satisfy a threshold condition, and to control the communication module to transmit the audio packet encoded at the second bit rate to the output device.

Abstract: A portable electronic device includes an audio input device and a processor. The processor is configured to obtain audio input data including a noise signal having an audio feature through the audio input device, to filter the audio input data using a neural network model to generate first audio output data, and to filter the first audio output data without using the neural network model to generate second audio output data. The first audio output data has a first changed audio feature corresponding to the audio feature and the second audio output data has a second changed audio feature corresponding to the audio feature.

Abstract: A binaural decoder for an MPEG surround stream, which decodes an MPEG surround stream into a stereo 3D signal, and a decoding method thereof. The method includes dividing a compressed audio stream and head related transfer function (HRTF) data into subbands, selecting predetermined subbands of the HRTF data divided into subbands and filtering the HRTF data to obtain the selected subbands, decoding the audio stream divided into subbands into a stream of multi-channel audio data with respect to subbands according to spatial additional information, and binaural-synthesizing the HRTF data of the selected subbands with the multi-channel audio data of corresponding subbands.

Abstract: A secure communication apparatus may include a security module for generating an encrypted bitstream by encrypting at least a portion of data forming a bitstream and inserting at least a portion of key information used in the encryption into the bitstream and for decrypting encrypted data by acquiring at least a portion of key information for the decryption from a received encrypted bitstream, and a communication module for transmitting and receiving the encrypted bitstream.

Abstract: An electronic device may include a processor, a communication module to establish a wireless link with an output device, and a transmit buffer in which an audio packet to be transmitted to the output device through the wireless link is stored. The processor may be configured to control the communication module to transmit an audio packet, which is encoded at a first bit rate, stored in the transmit buffer to the output device, to store, in the transmit buffer, an audio packet, which is encoded at a second bit rate lower than the first bit rate, when a state of the transmit buffer fails to satisfy a threshold condition, and to control the communication module to transmit the audio packet encoded at the second bit rate to the output device.

Abstract: Provided is a method of a device transmitting integrity check data. The method includes establishing a voice communication channel with at least one other device, determining a size of a packet to be transmitted through the established voice communication channel based on a bandwidth of the communication channel, detecting a user's voice from an input signal, selectively inserting integrity check data for checking the integrity of data to be transmitted into the packet based on a result of the detection, and transmitting the packet to the at least one other device.

Abstract: A device and a method for processing an image by a multimedia device that supports encryption and decryption are provided. The device includes a thumbnail image of an original image is obtained and the original image is encrypted using a first encryption scheme. An encrypted image frame is generated such that the encrypted image frame includes an identity field in which marker information is recorded between a first image field in which the obtained thumbnail image is recorded and a second image field in which the encrypted original image is recorded. The marker information indicates whether the encrypted image frame includes the second image field.

Abstract: Provided are an apparatus and a method for encoding and decoding audio signals, in which when determining a masking threshold according to a psychoacoustic model, accurate results may be obtained for a short window-based audio signal as well as for a long window-based audio signal. The apparatus for encoding audio signals according to the present invention comprises a masking threshold determining unit configured to determine, on the basis of a frame length of a first window having a divided audio signal, a masking threshold for a second window that has a different frame length from that of the first window.

Abstract: A binaural decoder for an MPEG surround stream, which decodes an MPEG surround stream into a stereo 3D signal, and a decoding method thereof. The method includes dividing a compressed audio stream and head related transfer function (HRTF) data into subbands, selecting predetermined subbands of the HRTF data divided into subbands and filtering the HRTF data to obtain the selected subbands, decoding the audio stream divided into subbands into a stream of multi-channel audio data with respect to subbands according to spatial additional information, and binaural-synthesizing the HRTF data of the selected subbands with the multi-channel audio data of corresponding subbands.

Abstract: A method of managing an image by an electronic device may include: generating a first encryption image by encrypting a first image; acquiring bitstream data corresponding to a second image related to the first image; generating a changed image by combining at least some of the bitstream data and the first encryption image; and transmitting the changed image to an external electronic device.

Abstract: A binaural decoder for an MPEG surround stream, which decodes an MPEG surround stream into a stereo 3D signal, and a decoding method thereof. The method includes dividing a compressed audio stream and head related transfer function (HRTF) data into subbands, selecting predetermined subbands of the HRTF data divided into subbands and filtering the HRTF data to obtain the selected subbands, decoding the audio stream divided into subbands into a stream of multi-channel audio data with respect to subbands according to spatial additional information, and binaural-synthesizing the HRTF data of the selected subbands with the multi-channel audio data of corresponding subbands.

Abstract: A meat-aging apparatus is disclosed. The meat-aging apparatus comprises: a photographing unit for photographing meat stored in the meat-aging apparatus; an illumination unit for irradiating light to the meat; a storage unit for storing recipe information for aging the meat according to the type or state of the meat; and a processor for determining the type or state of the meat on the basis of a photographed image, and controlling the illumination unit to irradiate light to the meat according to the recipe information corresponding to the determined type or state of the meat in order to age the meat.

Abstract: A method of encrypting data transmitted from a first device to a second device, performed by using an Advanced Encryption Standard (AES) encryption algorithm, includes obtaining size information of an encryption key and size information of data that is to be encrypted and includes a plurality of bits; encrypting a first bit group, which is at least one bit corresponding to a size of the encryption key, among the plurality of bits, by using the encryption key; selecting a third bit group, which is at least one bit of the encrypted first bit group based on size information of the encryption key and a size of a second bit group including bits that are different from the first bit group among the plurality of bits; and encrypting the second bit group and the selected third bit group by using the encryption key.

Abstract: A portable electronic device includes an audio input device and a processor. The processor is configured to obtain audio input data including a noise signal having an audio feature through the audio input device, to filter the audio input data using a neural network model to generate first audio output data, and to filter the first audio output data without using the neural network model to generate second audio output data. The first audio output data has a first changed audio feature corresponding to the audio feature and the second audio output data has a second changed audio feature corresponding to the audio feature.

Abstract: The disclosure relates to a method of supporting monitoring of an encrypted data communication session of a first device, the method comprising: receiving a signal for initiating a communication session with a second device; generating an encryption key for encryption of the communication session; determining whether a monitoring signal is received for the communication session; and transmitting information about the encryption key to the second device by using a predetermined packet based on the determination.

Abstract: An apparatus and method for a sensor network, machine-to-machine (M2M) communication, machine type communication (MTC), and Internet of things (IoT) are disclosed. The disclosure may be applied to, for example, intelligent services related to the above technologies, in conjunction with smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail business, security, and safety related services. The method includes generating first image data by resizing original image data to a predetermined size, inserting watermark data into the first image data, and adding difference data corresponding to the difference between the original image data and the first image data to second image data that is image data in which the watermark data is inserted.

Abstract: A binaural decoder for an MPEG surround stream, which decodes an MPEG surround stream into a stereo 3D signal, and a decoding method thereof. The method includes dividing a compressed audio stream and head related transfer function (HRTF) data into subbands, selecting predetermined subbands of the HRTF data divided into subbands and filtering the HRTF data to obtain the selected subbands, decoding the audio stream divided into subbands into a stream of multi-channel audio data with respect to subbands according to spatial additional information, and binaural-synthesizing the HRTF data of the selected subbands with the multi-channel audio data of corresponding subbands.

Abstract: Provided is a method of a device transmitting integrity check data. The method includes establishing a voice communication channel with at least one other device, determining a size of a packet to be transmitted through the established voice communication channel based on a bandwidth of the communication channel, detecting a user's voice from an input signal, selectively inserting integrity check data for checking the integrity of data to be transmitted into the packet based on a result of the detection, and transmitting the packet to the at least one other device.