Abstract: A powder filtering mechanism includes a connecting part, a main body, a duct, a suction device and a bracket. The connecting part is in communication with a powder inlet. Moreover, plural filters are disposed within an accommodation space of the main body. The suction device is in communication with the main body. The bracket supports a micro-particle adsorption structure. During operation of the suction device, flying dust of excess construction powder is inhaled into the powder inlet, and a portion of the flying dust is transferred to the accommodation space. After the portion of the flying dust is filtered by the plural filters in multiple filtering steps, micro-particles of flying dust passing through the plural filters are transferred to the micro-particle adsorption structure so as to be adsorbed by the micro-particle adsorption structure.

Abstract: A powder recycling machine includes a casing, a powder collector, a dust-sucking system and a dust-removing system. An accommodation space within the casing is divided into a first space and a second space by a partition plate. The powder collector is disposed within the first space for collecting excess powder from the first space. The dust-sucking system includes a connector, a cyclone separator and a first suction device. The connector, the cyclone separator, the first suction device and the powder collector are sequentially in communication with each other through plural transmission ducts. The dust-removing system includes a second suction device. The first space, the second suction device and the powder collector are sequentially in communication with each other through plural guiding ducts. After the excess powder suspended in the first space is introduced into the dust-removing system, the excess powder is transferred to the powder collector.

Abstract: Signaling and feedback schemes of channel variation information from WLAN receiver are proposed. WLAN receiver performs channel tracking and obtains channel variation information. The signaling and feedback of channel variation information can help WLAN transmitter to decide when to apply travelling pilots or mid-amble in the transmission. Furthermore, the channel variation information can assist WLAN transmitter for scheduling the next transmission properly and thereby enhancing the system performance of WLAN.

Abstract: A powder recycling system includes a powder feeder, a remaining powder collector, a bridge breaker, a block powder filter, a cyclone separator, a particulate filter cleaner, an air pressure generation device and an electrostatic precipitator. The powder feeder provides a construction powder to a construction platform. The remaining powder collector for collects the remaining powder. The cyclone separator is used to separate the large-size powdery particles and the small-size powdery particles of the remaining powder from each other through a rotating gaseous stream. The large-size powdery particles fall down to the powder feeder due to gravity, and the small-size powdery particles of the remaining powder is removed from the rotating gaseous stream and transmitted to the particulate filter cleaner. After the small-size powdery particles of the remaining powder are filtered by the particulate filter cleaner, the suspended small-size powdery particles are transmitted to the electrostatic precipitator.

Abstract: Techniques and examples pertaining to frame synchronization for dynamic frame rate in dual-camera applications are described. A change in brightness in ambient lighting may be detected when an electronic apparatus operates in a dual-camera mode utilizing images captured by a first image sensor and a second image sensor. In response to the detected change in brightness in the ambient lighting, frame rates of the first image sensor and the second image sensor may be synchronized.

Abstract: A rapid prototyping apparatus includes a construction platform, a movable platform, a first lift/lower mechanism and a second lift/lower mechanism. The construction platform includes a powder feeder, a construction chamber and a powder collector. The powder feeder provides construction powder. A rapid prototyping process is performed in the construction chamber. Excess construction powder is collected in the powder collector. The first lift/lower mechanism is disposed under the powder feeder. The second lift/lower mechanism is disposed under the construction chamber and the powder collector. After the rapid prototyping process is completed, the collected excess construction powder in the powder collector and the excess construction powder in the construction chamber are pushed back to the powder feeder by the powder-pushing element, and the construction powder at a topmost layer of the powder feeder is compacted by the powder-pushing element.

Abstract: A powder filtering mechanism includes a connecting part, a main body, a duct, a suction device and a bracket. The connecting part is in communication with a powder inlet. Moreover, plural filters are disposed within an accommodation space of the main body. The suction device is in communication with the main body. The bracket supports a micro-particle adsorption structure. During operation of the suction device, flying dust of excess construction powder is inhaled into the powder inlet, and a portion of the flying dust is transferred to the accommodation space. After the portion of the flying dust is filtered by the plural filters in multiple filtering steps, micro-particles of flying dust passing through the plural filters are transferred to the micro-particle adsorption structure so as to be adsorbed by the micro-particle adsorption structure.

Abstract: A powder recycling machine includes a casing, a powder collector, a dust-sucking system and a dust-removing system. An accommodation space within the casing is divided into a first space and a second space by a partition plate. The powder collector is disposed within the first space for collecting excess powder from the first space. The dust-sucking system includes a connector, a cyclone separator and a first suction device. The connector, the cyclone separator, the first suction device and the powder collector are sequentially in communication with each other through plural transmission ducts. The dust-removing system includes a second suction device. The first space, the second suction device and the powder collector are sequentially in communication with each other through plural guiding ducts. After the excess powder suspended in the first space is introduced into the dust-removing system, the excess powder is transferred to the powder collector.

Abstract: A powder recycling system for a three-dimensional rapid prototyping apparatus is provided. The powder recycling system includes a sealed main body, a negative pressure generator, an air pressure generator, a lighting unit and a heater. When an excess powder removing process is performed to remove excess powder from a three-dimensional object, the excess powder is sieved by a screen mesh and collected by a powder collector. Consequently, the excess powder is recycled.

Abstract: A powder recycling system includes a powder feeder, a remaining powder collector, a bridge breaker, a block powder filter, a cyclone separator, a particulate filter cleaner, an air pressure generation device and an electrostatic precipitator. The powder feeder provides a construction powder to a construction platform. The remaining powder collector for collects the remaining powder. The cyclone separator is used to separate the large-size powdery particles and the small-size powdery particles of the remaining powder from each other through a rotating gaseous stream. The large-size powdery particles fall down to the powder feeder due to gravity, and the small-size powdery particles of the remaining powder is removed from the rotating gaseous stream and transmitted to the particulate filter cleaner. After the small-size powdery particles of the remaining powder are filtered by the particulate filter cleaner, the suspended small-size powdery particles are transmitted to the electrostatic precipitator.

Abstract: An automatic powder recycling apparatus includes a housing, a plurality of isolation elements, an air-blowing device, a powder filtering member, a recycling member and an air-inhaling device. A sealed space is defined within the housing. The air-blowing device is disposed within the sealed space for removing the powder attached on the surface of the finished product. The air-inhaling device is in communication with the first receptacle for allowing the first receptacle to be in a negative pressure state. When the powder on the finished product is removed by the air-blowing device and directed to the powder filtering member by the air-inhaling device, the powder is filtered and blocked by the powder filtering member. When the air-inhaling device is disabled, the powder blocked by the powder filtering member naturally falls down to the recycling member.

Abstract: An automatic powder recycling apparatus includes a housing, a plurality of isolation elements, an air-blowing device, a powder filtering member, a recycling member and an air-inhaling device. A sealed space is defined within the housing. The air-blowing device is disposed within the sealed space for removing the powder attached on the surface of the finished product. The air-inhaling device is in communication with the first receptacle for allowing the first receptacle to be in a negative pressure state. When the powder on the finished product is removed by the air-blowing device and directed to the powder filtering member by the air-inhaling device, the powder is filtered and blocked by the powder filtering member. When the air-inhaling device is disabled, the powder blocked by the powder filtering member naturally falls down to the recycling member.