Abstract: In one example in accordance with the present disclosure, an electronic device is described. The electronic device includes a wireless controller. The wireless controller is to establish a first wireless connection between the electronic device and a peripheral device to receive a unique identifier for a second electronic device. The wireless controller is also to establish, based on the unique identifier for the second electronic device, a second wireless connection between the electronic device and the second electronic device. The electronic device includes a wireless transceiver to wirelessly transfer data to the second electronic device through the second wireless connection.

Abstract: A particle charger with sheath air flow for enhancing charging efficiency includes a housing and a discharge wire. The housing has a charging chamber for accommodating the discharge wire, a particle inlet, a sheath air inlet, an outlet and an accelerating channel. A clean sheath air is guided through the sheath air inlet into the charging chamber to surround charged particles, reducing deposition of charged particles on the inside wall of the housing. A relatively small annular gap of accelerating channel accelerates the charged particles to exit the particle charger, and therefore minimized the particle electrostatic loss due to depositing on the inner surface of the housing. Additionally, uncharged particles approach the discharge wire axially, and charged particles move away radially. It is helpful for the charged particles to diffuse rapidly and uniformly, thereby enhancing the charging efficiency.

Abstract: A particle charger with sheath air flow for enhancing charging efficiency includes a housing and a discharge wire. The housing has a charging chamber for accommodating the discharge wire, a particle inlet, a sheath air inlet, an outlet and an accelerating channel. A clean sheath air is guided through the sheath air inlet into the charging chamber to surround charged particles, reducing deposition of charged particles on the inside wall of the housing. A relatively small annular gap of accelerating channel accelerates the charged particles to exit the particle charger, and therefore minimized the particle electrostatic loss due to depositing on the inner surface of the housing. Additionally, uncharged particles approach the discharge wire axially, and charged particles move away radially. It is helpful for the charged particles to diffuse rapidly and uniformly, thereby enhancing the charging efficiency.

Abstract: A system and method for searching video scenes stored in an electronic device includes acquiring video captions of the video and dividing the video captions into a plurality of caption segments, creating a plurality of caption files to contain the plurality of caption segments, and dividing the video into a plurality of video clips according to the plurality of caption segments. The system and method further includes searching the plurality of caption files for caption segments comprising keywords, and determining the video clips corresponding to searched caption files.