Abstract: A video conference system, a video conference apparatus and a video conference method are provided. The video conference system includes a video conference apparatus and a display apparatus. The video conference apparatus includes an image detection device, a sound source detection device, and a processor. The image detection device obtains a conference image of a conference space. When the sound source detection device detects a sound generated by a sound source in the conference space, the sound source detection device outputs a positioning signal. The processor receives the positioning signal, and determines whether a real face image exists in a sub-image block of the conference image corresponding to the sound source according to the positioning signal to output the image signal. The display apparatus displays a close-up conference image including the real face image according to the image signal.

Abstract: A video conference system, a video conference apparatus and a video conference method are provided. The video conference system includes a video conference apparatus and a display apparatus. The video conference apparatus includes an image detection device, a sound source detection device, and a processor. The image detection device obtains a conference image of a conference space. When the sound source detection device detects a sound generated by a sound source in the conference space, the sound source detection device outputs a positioning signal. The processor receives the positioning signal, and determines whether a real face image exists in a sub-image block of the conference image corresponding to the sound source according to the positioning signal to output the image signal. The display apparatus displays a close-up conference image including the real face image according to the image signal.

Abstract: A multimedia playing system includes an audio outputting device and a multimedia player. The audio outputting device includes a connecting plug and a distance detector. The distance detector generates a distance detecting signal if the distance detector detects the presence of a nearby object. The multimedia player is communicated with the audio outputting device through the connecting plug so as to transmit an output audio signal to the audio outputting device. The distance detecting signal is transmitted to the multimedia player through the connecting plug. The multimedia player generates a prompt event to the audio outputting device if the time duration of continuously receiving the distance detecting signal exceeds a time threshold.

Abstract: An audio system utilizes a method for detecting and adjusting a sound field effect thereof. The audio system includes a first speaker and a second speaker. The first speaker is used to emit a first sound signal, and the second speaker is used to emit a second sound signal. The method for adjusting the sound field effect includes the steps of detecting a specific position and adjusting the first speaker or the second speaker based on the specific position to focus the first sound signal and the second sound signal on the specific position.

Abstract: An acoustic calibration sound system includes a coordinate position detecting device and a host. The coordinate position detecting device is used for detecting a position of a listener in a space plane and issuing a corresponding position signal. The host outputs an audio signal. The host has an acoustic characteristic parameter matrix containing multiple acoustic characteristic parameters related to multiple positions in the space plane. The host selects a corresponding acoustic characteristic parameter in response to the position signal. According to the selected acoustic characteristic parameter, the host adjusts the audio signal.

Abstract: A multimedia playing system includes an audio outputting device and a multimedia player. The audio outputting device includes a connecting plug and a distance detector. The distance detector generates a distance detecting signal if the distance detector detects the presence of a nearby object. The multimedia player is communicated with the audio outputting device through the connecting plug so as to transmit an output audio signal to the audio outputting device. The distance detecting signal is transmitted to the multimedia player through the connecting plug. The multimedia player generates a prompt event to the audio outputting device if the time duration of continuously receiving the distance detecting signal exceeds a time threshold.

Abstract: The invention provides an audio system and a method for detecting and adjusting a sound field effect thereof. The audio system includes a first speaker and a second speaker. The first speaker is used to emit a first sound signal, and the second speaker is used to emit a second sound signal. The method for adjusting the sound field effect includes the steps of detecting a specific position and adjusting the first speaker or the second speaker based on the specific position to focus the first sound signal and the second sound signal on the specific position.

Abstract: The invention discloses an illuminated sign display assembly including a transparent substrate, a multilayer circuit structure, a light reflecting casing, and at least one light emitting unit. The multilayer circuit structure is disposed on the transparent substrate, and a hollow portion is formed on the multilayer circuit structure. The light reflecting casing is fixed on the transparent substrate by a welding process and covers the hollow portion of the multilayer circuit structure. The light emitting unit is disposed on the transparent substrate and located in the light reflecting casing. The light reflecting unit is electrically connected to the multilayer circuit structure. Once the multilayer circuit structure is powered on, the light emitted by the light emitting unit will be reflected by the light reflecting casing and then passes through the hollow portion of the multilayer circuit structure and the transparent substrate, so as to form an illuminated sign.

Abstract: The invention relates to a portable digital device with an intuitive browsing function and an operating method thereof. A start unit is enabled to allow the value and direction of a gravity acceleration variation to be sensed. According to the gravity acceleration variation, a sensing signal is provided for a control unit, and then the control unit operates a user interface based on the sensing signal. Therefore, users are able to operate the digital device instinctively and obtain variable operating effects by varying the displacement.

Abstract: The present invention relates to a digital television receiving device and a method for adjusting digital television signals thereof. The method comprises: receiving a GPS signal; obtaining a moving velocity of the digital television receiving device according to the GPS signal; looking up a parameter table to obtain one frequency adjusting value of the digital television signal corresponding to the moving velocity; and adjusting the frequency of the received digital television signal according to the frequency adjusting value of the moving velocity.

Abstract: The present invention provides a power supply and computer using the same. The power supply includes a housing having a first surface and second surface. An audio input connector is arranged on the first surface for receiving audio signal. An audio output connector is arranged on the second surface. An AC to DC power conversion module is arranged in the housing for converting AC power into DC power. An audio power amplification module is arranged in the housing for amplifying the audio signal and outputting the amplified audio signal via the audio output connector. A DC to DC power conversion module is arranged in the housing and connected to the AC to DC power conversion module for converting the DC power supplied by the AC to DC power conversion module.