Abstract: An integrated circuit (IC) with active and dummy device cell arrays and a method of fabricating the same are discloses. The IC includes a substrate, an active device cell, and a dummy device cell. The active device cell includes an array of source/drain (S/D) regions of a first conductivity type disposed on or within the substrate and an array of gate structures with a first gate fill material disposed on the substrate. The dummy device cell includes a first array of S/D regions of the first conductivity type disposed on or within the substrate, a second array of S/D regions of a second conductivity type disposed on or within the substrate, and an array of dual gate structures disposed on the substrate. Each of the dual gate structures includes the first gate fill material and a second gate fill material that is different from the first gate fill material.

Abstract: An audiovisual device includes an input interface configured to receive a character indication signal, a display unit configured to display a video and output an audio signal of the video, wherein the video includes a plurality of characters, and the audio signal includes a plurality of audio tracks, and a processor configured to perform calculation on a motion waveform of each of the characters in the video and a plurality of sound waveforms of the audio tracks to generate a plurality of correlation coefficients, and determine a character audio track of each of the characters according to the correlation coefficients of each of the characters. The processor extracts a target character audio track corresponding to the character indication signal, and controls the display unit to adjust a relative volume between the target character audio track and other audio tracks among the audio tracks when receiving the character indication signal.

Abstract: A control method of video playback comprises: utilizing a display interface to display a plurality of frames of a video, and utilizing an audio output interface to output an audio signal of the video; utilizing an input interface to receive an indication signal; utilizing a processor to acquire a target character pattern in a current frame of the display interface according to the indication signal, wherein the indication signal indicates a frame coordinate, and the target character pattern corresponds to the frame coordinate and corresponds to one of the plurality of character motions; utilizing the processor to extract a determined audio track corresponding to the target character pattern from the audio signal according to a relation between the plurality of character motions and the plurality of pre-processed audio tracks; utilizing the processor to control the audio output interface to output the determined audio track.

Abstract: The present disclosure discloses a system for improving stereophonic sound, including a filter, a first speaker, a second speaker, a microphone, and a processor. The processor is configured to apply a filter matrix on an input signal to generate a filtered sound signal. The first speaker is electrically connected to the filter and emits a first sound signal according to the filtered sound signal. The second speaker is electrically connected to the filter and emits a second sound signal according to the filtered sound signal. The microphone is configured to receive the first and the second sound signal to obtain an actual sound signal. The processor is configured to compare the actual sound signal with a desired sound signal and obtain a sound signal error, and to adjust the filter matrix according to the sound signal error so that the actual sound signal approximates the desired sound signal.

Abstract: A notebook computer includes a base, a speaker module and a top cover. The base includes a keyboard frame and a bottom cover. The keyboard frame is disposed on the bottom cover. The speaker module includes a speaker cover and a speaker main body. The speaker cover is disposed on the bottom cover to form a resonance chamber between the speaker cover and the bottom cover. The speaker main body is disposed on the speaker cover and located in the resonance chamber. The top cover is pivotally connected to the base.

Abstract: A playback method of infrared remote control audiovisual device comprises: utilizing a display interface and an audio output interface to output frames and an audio signal of a video; utilizing an infrared sensor to receive a first indication signal; pausing a playback of the display interface and an output of the audio output interface according to the first indication signal, so that the display interface displays a paused frame; utilizing the infrared sensor to receive a second indication signal; determining a target character pattern of a target block in the paused frame according to the second indication signal; extracting a determined audio track corresponding to the target character pattern from the audio signal according to a relation between the pre-processed character feature sets and pre-processed audio tracks; controlling the display interface to resume the playback and controlling the audio output interface to output the determined audio track.

Abstract: A 3D recording and playing method is applied to a laptop which has sound receiving elements and two audio output elements. The 3D recording and playing method comprises receiving input signals by the sound receiving elements, localizing and separating the input signals so as to obtain preliminarily processed signals, filtering each of the preliminarily processed signal using a head related transfer function to generate a left channel signal and a right channel signal, generating a left channel signal set according to the left channel signal corresponding to each of the preliminarily processed signals, and generating a right channel signal set according to the right channel signal corresponding to each of the preliminarily processed signals, and outputting the left channel signal set and the right channel signal set by the two audio output elements respectively.

Abstract: The disclosure provides a centrifugal fan structure. The centrifugal fan structure includes a top case, a body, a fan, and a muffler pipe. The top case includes an air inlet. The body includes a sidewall, a tongue part, and a bottom case. The sidewall and the tongue part are disposed on the bottom case. The sidewall includes an opening. The fan is disposed in the body, and includes a shaft and a plurality of fan blades connected to the shaft. The muffler pipe is disposed on the sidewall, and the opening of the muffler pipe is corresponding to the opening of the sidewall. The length of the muffler pipe is proportional to the wavelength of the blade passing frequency of the fan.

Abstract: The disclosure provides an airflow generator. The airflow generator includes a casing, a fan blade and a muffling part. The casing has an air inlet, an air outlet, an accommodating space and a bypass opening connected to one another. The fan blade is disposed in the accommodating space. The muffling part is located outside the accommodating space and is disposed at the bypass opening. The muffling part has an airflow channel, and the airflow channel is connected to the accommodating space via the bypass opening. The fan blade is capable of sucking ambient air into the accommodating space via the air inlet so as to create an air current throughout the accommodating space and to force the air current to flow into the airflow channel via the bypass opening.

Abstract: A method for enhancing sound volume includes the following steps: delivering a sound-source signal comprising a low-frequency signal to a processor by a set of sound-source equipment; generating a sound-enhancing signal by the processor according to the low-frequency signal within a delay period; and outputting an enhanced sound source signal comprising the low-frequency signal and the sound-enhancing signal to a speaker by the processor; wherein a waveform of the sound-enhancing signal is identical to a waveform of the low-frequency signal, and the delay period causes a phase difference between the sound-enhancing signal and the low-frequency signal.

Abstract: A noise cancellation device includes a voice receiving module, a distance measuring module, a noise cancellation module and a speaker module. The voice receiving module is configured to receive a noise. The distance measuring module is configured to send a distance measuring signal to an object, and calculate distance information of the object according to a reflected distance measuring signal reflected by the object. The noise cancellation module is connected to the voice receiving module and the distance measuring module, and is configured to generate a reverse phase signal of the noise according to the noise. The speaker module is connected to the noise cancellation module, and is configured to generate an anti-noise according the reverse phase signal, and sound the anti-noise according to the distance information.

Abstract: A noise cancellation device includes a voice receiving module, a distance measuring module, a noise cancellation module and a speaker module. The voice receiving module is configured to receive a noise. The distance measuring module is configured to send a distance measuring signal to an object, and calculate distance information of the object according to a reflected distance measuring signal reflected by the object. The noise cancellation module is connected to the voice receiving module and the distance measuring module, and is configured to generate a reverse phase signal of the noise according to the noise. The speaker module is connected to the noise cancellation module, and is configured to generate an anti-noise according the reverse phase signal, and sound the anti-noise according to the distance information.

Abstract: The disclosure provides a centrifugal fan structure. The centrifugal fan structure includes a top case, a body, a fan, and a muffler pipe. The top case includes an air inlet. The body includes a sidewall, a tongue part, and a bottom case. The sidewall and the tongue part are disposed on the bottom case. The sidewall includes an opening. The fan is disposed in the body, and includes a shaft and a plurality of fan blades connected to the shaft. The muffler pipe is disposed on the sidewall, and the opening of the muffler pipe is corresponding to the opening of the sidewall. The length of the muffler pipe is proportional to the wavelength of the blade passing frequency of the fan.

Abstract: A centrifugal fan module includes a housing and a fan. The housing includes a top cover, a bottom cover, a first side wall, and a plurality of second side walls. The first side wall is connected between the top cover and the bottom cover to surround and form an accommodating space and has a plurality of through holes therein. The second side walls are connected between the top cover and the bottom cover, are connected to the first side wall, and are located outside of the accommodating space. A chamber is formed between the first side wall and any one of the second side walls, and the accommodating space is communicated with the chambers through the through holes respectively. The fan is rotatably disposed in the accommodating space.

Abstract: An apparatus of fan heat dissipation comprises a fan component, a resonator and a speaker component. The fan component is located below a device in parallel and configured to dissipate heat from the device. The resonator is located below the fan component, and a working region is located between the bottom of the fan component and the top of the resonator. The speaker component is formed with the resonator, and the resonator serves as a cabinet for the speaker component. Furthermore, the resonator is the Helmholtz resonator.

Abstract: An electronic device includes a housing, at least one cover, and a hard disk. The housing having an accommodating space, an inner surface, an outer surface, and at least one through hole communicating with the inner surface and the outer surface. The cover located at an outer side of the housing in which a chamber is formed between at least one portion of the cover and at least one portion of the outer surface, and the chamber is communicating with the accommodating space through the through hole. The hard disk disposed in the accommodating space.

Abstract: Heat dissipation component includes a fan unit, a first housing, and an airflow-guiding plate. The fan unit includes a fan blade portion, and a fan housing including a first air-guided cap and a second air-guided cap. The second air-guided cap, having a fan inlet, is disposed on the first air-guided cap. The fan blade portion is disposed between the first air-guided cap and the second air-guided cap, and pivotally-connected to the fan housing at the second air-guided cap. The first housing is disposed on a side of the second air-guided cap away from the first air-guided cap. An inlet airway is formed between the first housing and the fan unit. The airflow-guiding plate is disposed between the first housing and the second air-guided cap, and extended from outline of the main fan inlet toward outline of the inlet airway and away from the main fan inlet.

Abstract: Heat dissipation component includes a fan unit, a first housing, and an airflow-guiding plate. The fan unit includes a fan blade portion, and a fan housing including a first air-guided cap and a second air-guided cap. The second air-guided cap, having a fan inlet, is disposed on the first air-guided cap. The fan blade portion is disposed between the first air-guided cap and the second air-guided cap, and pivotally-connected to the fan housing at the second air-guided cap. The first housing is disposed on a side of the second air-guided cap away from the first air-guided cap. An inlet airway is formed between the first housing and the fan unit. The airflow-guiding plate is disposed between the first housing and the second air-guided cap, and extended from outline of the main fan inlet toward outline of the inlet airway and away from the main fan inlet.

Abstract: An apparatus of fan heat dissipation comprises a fan component, a resonator and a speaker component. The fan component is located below a device in parallel and configured to dissipate heat from the device. The resonator is located below the fan component, and a working region is located between the bottom of the fan component and the top of the resonator. The speaker component is formed with the resonator, and the resonator serves as a cabinet for the speaker component. Furthermore, the resonator is the Helmholtz resonator.

Abstract: A system for controlling fan noise includes a fan, a sensor, a signal processing unit, a net structure, and a piezoelectric element. The fan has an airflow inlet and an airflow outlet. The sensor is disposed near the airflow outlet and is used for receiving a sound signal made by the fan. After the signal processing unit receives the sound signal sent by the sensor, the signal processing unit provides an inversed phase signal by analysis and computation. The net structure is disposed at the airflow inlet. The piezoelectric element is disposed on the net structure. When the piezoelectric element receives the inversed phase signal provided by the signal processing unit, the piezoelectric element vibrates the net structure, so that the net structure generates an inversed phase sound to offset a noise made by the fan.