Abstract: A memory device comprises an input interface configured to receive an erase request indicating a memory portion to be erased and control circuitry configured to trigger erasing information stored by memory cells of at least a part of the indicated memory portion of the memory device by writing a predefined pattern into the memory cells during an automatic refresh cycle.

Abstract: A child safety seat is provided and includes a seat body, a driving portion and a detection mechanism. The driving portion is rotatably connected to the seat body. The detection mechanism includes a detector and a trigger mechanism. The detector is in a non-working state when the trigger mechanism is in an open state. The detector is in a working state when the trigger mechanism is in a closed state. The driving portion is rotatably operated to switch the trigger mechanism from the open state to the closed state, so as to switch the detector to the working state. The child safety seat can prevent a dangerous scenario where a child is left in a car.

Abstract: The present invention discloses an individualized orthodontic appliance with axis correction functions, comprising No. 1-7 individualized lingual brackets connected in series by an archwire. Each individualized lingual bracket includes a base plate and a bracket body connected with the base plate. In the No. 1-7 individualized lingual brackets, the underside of the bracket body of at least two of the individualized lingual brackets is disposed with a crimpable hook with a through hole and the through holes are connected in series by an ortho-axial wire. In this invention, the underside of the bracket body is disposed with the crimpable hook with the through hole and the ortho-axial wire is used to pass through the through holes. In this way, the underside of the bracket body can produce the corresponding orthodontic force while the crown of tooth is moving during the orthodontic treatment. The positions of the teeth roots can also be gradually corrected.

Abstract: The present invention discloses a method for manufacturing a positioning tray and a bracket with a positioning hook for manufacturing the positioning tray. The method for manufacturing the positioning tray comprises the following steps: acquiring an original dental impression and an ideal dental impression; transforming the ideal dental impression to a three-dimensional digital model and drawing each bracket body; drawing a positioning hook on the bracket body; making a wax pattern of a bracket with the positioning hook by using a wax pattern machine; casting, with the wax pattern as a mould core, a blank of the bracket with the positioning hook which then receives surface treatment; after the surface treatment, assembling the bracket with the positioning hook to the original dental impression and performing film lamination to obtain a positioning tray, and finally removing the positioning hook to obtain the bracket matching the positioning tray.

Abstract: This invention discloses a method of performing an authentication on an identity module card by an electronic communication device through installing an identification software provided by a telecommunication service provider into an electronic communication device to identify whether a subscriber identity module card is installed therein, and request a user to input an authentication data provided by the telecommunication service provider into the electronic communication device for enabling the electronic communication device to execute the booting procedure for communicating with others through the telecommunication service provider.

Abstract: This invention discloses a method of performing an authentication on an identity module card by an electronic communication device through installing an identification software provided by a telecommunication service provider into an electronic communication device to identify whether a subscriber identity module card is installed therein, and request a user to input an authentication data provided by the telecommunication service provider into the electronic communication device for enabling the electronic communication device to execute the booting procedure for communicating with others through the telecommunication service provider.