Abstract: A Totem Pole PFC circuit includes at least one fast-switching leg, a slow-switching leg, and a control unit. Each fast-switching leg includes a fast-switching upper switch and a fast-switching lower switch. The slow-switching leg is coupled in parallel to the at least one fast-switching leg, and the slow-switching leg includes a slow-switching upper switch and a slow-switching lower switch. The control unit receives an AC voltage with a phase angle, and the control unit includes a current detection loop, a voltage detection loop, and a control loop. The control loop generates a second control signal assembly to respectively control the slow-switching upper switch and the slow-switching lower switch. The control loop controls the second control signal assembly to follow the phase angle, and dynamically adjusts a duty cycle of the second control signal assembly to turn on or turn off the slow-switching upper switch and the slow-switching lower switch.

Abstract: A foldable electronic apparatus is provided and includes a base unit and a display unit. The display unit includes a main panel body having a first side and a bottom side substantially perpendicular to each other, and the bottom side is connected to the base unit; a first folding module disposed on the first side; a first side panel body disposed on the first folding module, and the first side panel body is able to transform between a first unfolded state and a first folded state relative to the main panel body with the first folding module as an axis; and a flexible screen disposed on the main panel body, the first folding module and the first side panel body, and the flexible screen includes a first bendable area corresponding to the first folding module.

Abstract: A method for fabricating nonenzymatic glucose sensor, which comprises steps of: (a) providing a bottom substrate; (b) preparing a graphene layer on the bottom substrate; (c) depositing plural amount of zinc oxide (ZnO) seed crystals on the graphene layer; (d) growing the ZnO seed crystals into columnar nanorods with hydrothermal method; (e) coating a thin film of cuprous oxide (Cu2O) on the surface of the ZnO nanorods by electrochemistry-based electrodeposition; and (f) grafting single-walled carbon nanotubes (SWCNTs) on surface of the Cu2O thin film, by using Nafion fixative composited with SWCNTs. The structure of the above sensor, therefore, comprises a bottom substrate and other components orderly assembled on it, including, from inside to outside, a graphene layer, plural amount of ZnO nanorods, a Cu2O thin film, plural amount of SWCNTs, and the Nafion fixative. Accordingly, the sensor has advantages of low cost, rapid response, and easy for preservation.

Abstract: A flexible screen comprises a multi-layer display structure and a covering structure. The multi-layer display structure includes an outer surface and an inner surface opposite to the outer surface, and the inner surface faces towards the foldable electronic device. The covering structure is disposed on the outer surface of the multi-layer display structure and includes a substrate layer and a plurality of nano-protrusions. The nano-protrusions are formed in array on at least one side of the substrate layer. The flexible screen can transform between an unfolded state and a folded state, and a bending section is partially formed when the flexible screen is in the folded state. The nano-protrusions located in the bending section can release the stress generated in the bending section when the flexible screen transform between the unfolded state and the folded state.

Abstract: A foldable electronic device is provided and includes a central base, a torque module, two wing members, two transmission members, two panel bodies, two connecting rods, two drop plates, a synchronous module and a flexible screen. The torque module is disposed on the central base, the wing members pivot relative to the central base, the transmission members are pivotally connected to the torque module and the central base, the panel bodies pivot relative to the wing members and linearly slide relative to the transmission members, the connecting rods pivot relative to the wing members, the drop plates pivot relative to the panel bodies and the connecting rods, the synchronous module drives the transmission members to reverse synchronously, and the flexible screen is arranged on the panel bodies, the drop plates and the wing members and includes a bendable area.

Abstract: A femtocell, a femtocell gateway and an access rejection method thereof are provided. A wireless network system comprises a wireless device, a plurality of the femtocells, the femtocell gateway and a core network server. The wireless device has a Subscriber Identification and the core network server stores a Closed Subscribers Group Identification of the femtocells. The femtocell gateway receives an access rejection message corresponding to the Subscriber Identification of the wireless device from the core network server, and transmits the access rejection message to the femtocells. Each femtocell records the Subscriber Identification in a rejection list thereof, and it is capable of adding/deleting Subscriber Identifications in its rejection list.

Abstract: The present disclosure relates to a Completely Automated Public Turing Test to tell Computers and Humans Apart (CAPTCHA) image authentication method and system. The CAPTCHA image authentication method comprises the steps of: collecting a plurality of first objects; defining a plurality of variables so as to be used as basis for classifying and dividing the plural first objects into M groups accordingly while allowing each group in the M groups to correspond to at least one variable selected from the plural variables; selecting at least one group from the M groups while further grading and dividing the first objects in the selected group into subgroups of N grades based upon a standard unit of the variable corresponding to the selected group; sorting and storing the subgroups of N grades; and selecting a plurality of authentication objects from the subgroups of N grades to be used in an authentication process.

Abstract: The present invention discloses an electronic device, a cloud storage system, a method thereof and a tangible embodied computer readable medium. The cloud storage system comprises at least one server and an electronic device. The at least one server provides a plurality of cloud storage spaces for accessing data. The electronic device comprises a storage management interface and is connected to each of the servers via Internet in order to access the cloud storage space. Wherein, the cloud storage spaces are integrated as a virtual storage space by the electronic device for a user to access data therefrom. The user can concurrently access the cloud storage spaces through the storage management interface of the electronic device, or access one of the cloud storage spaces by multi-thread or multi-process so as to raise the access speed.

Abstract: The present disclosure relates to a Completely Automated Public Turing Test to tell Computers and Humans Apart (CAPTCHA) image authentication method and system. The CAPTCHA image authentication method comprises the steps of: collecting a plurality of first objects; defining a plurality of variables so as to be used as basis for classifying and dividing the plural first objects into M groups accordingly while allowing each group in the M groups to correspond to at least one variable selected from the plural variables; selecting at least one group from the M groups while further grading and dividing the first objects in the selected group into subgroups of N grades based upon a standard unit of the variable corresponding to the selected group; sorting and storing the subgroups of N grades; and selecting a plurality of authentication objects from the subgroups of N grades to be used in an authentication process.

Abstract: A femtocell, a femtocell gateway and an access rejection method thereof are provided. A wireless network system comprises a wireless device, a plurality of the femtocells, the femtocell gateway and a core network server. The wireless device has a Subscriber Identification and the core network server stores a Closed Subscribers Group Identification of the femtocells. The femtocell gateway receives an access rejection message corresponding to the Subscriber Identification of the wireless device from the core network server, and transmits the access rejection message to the femtocells. Each femtocell records the Subscriber Identification in a rejection list thereof, and it is capable of adding/deleting Subscriber Identifications in its rejection list.