Abstract: The federated learning system includes a moderator and client devices. Each client device performs a method for verifying model update as follows: receiving a hash function and a general model; training a client model according to the general model and raw data; calculating a difference as an update parameter between the general model and the client model, sending the update parameter to the moderator; inputting the update parameter to the hash function to generate a hash value; sending the hash value to other client devices, and receiving other hash values; summing all the hash values to generate a trust value; receiving an aggregation parameter calculated according to the update parameters; inputting the aggregation parameter to the hash function to generate a to-be-verified value; and updating the client model according to the aggregation parameter when the to-be-verified value equals the trust value.

Abstract: A memory device including a base semiconductor die, conductive terminals, memory dies, an insulating encapsulation and a buffer cap is provided. The conductive terminals are disposed on a first surface of the base semiconductor die. The memory dies are stacked over a second surface of the base semiconductor die, and the second surface of the base semiconductor die is opposite to the first surface of the base semiconductor die. The insulating encapsulation is disposed on the second surface of the base semiconductor die and laterally encapsulates the memory dies. The buffer cap covers the first surface of the base semiconductor die, sidewalls of the base semiconductor die and sidewalls of the insulating encapsulation. A package structure including the above- mentioned memory device is also provided.

Abstract: A memory device including a base semiconductor die, conductive terminals, memory dies, an insulating encapsulation and a buffer cap is provided. The conductive terminals are disposed on a first surface of the base semiconductor die. The memory dies are stacked over a second surface of the base semiconductor die, and the second surface of the base semiconductor die is opposite to the first surface of the base semiconductor die. The insulating encapsulation is disposed on the second surface of the base semiconductor die and laterally encapsulates the memory dies. The buffer cap covers the first surface of the base semiconductor die, sidewalls of the base semiconductor die and sidewalls of the insulating encapsulation. A package structure including the above-mentioned memory device is also provided.

Abstract: An optical element driving mechanism includes a movable assembly, a fixed assembly, and a driving assembly. The movable assembly is configured to be connected to an optical element. The movable assembly is movable relative to the fixed assembly. The driving assembly is configured to drive the movable assembly to move relative to the fixed assembly in a range of motion. The optical element driving mechanism further includes a positioning assembly configured to position the movable assembly at a predetermined position relative to the fixed assembly when the driving assembly is not operating.

Abstract: An integrated circuit is provided and includes a multi-bit cell having multiple bit cells disposed in multiple cell rows. The bit cells include M bit cells, M being positive integers. A first bit cell of the bit cells and a M-th bit cell of the bit cells are arranged diagonally in different cell rows in the multi-bit cell. The multi-bit cell includes first to fourth cell boundaries. The first and second boundaries extend in a first direction and the third and fourth boundaries extend in a second direction different from the first direction. The first bit cell and a second bit cell of the bit cells abut the third cell boundary, and the first bit cell and a (M/2+1)-th bit cell of the bit cells abut the first cell boundary.

Abstract: A device for locking lens and a method for the same are provided. The device is used in a voice-coil motor of a photographing module of a cell phone. The voice-coil motor has a lens-stand for a lens being turned to a locking depth inside. The device includes a circumgyration-stop instrument having a first sustaining surface, and a focusing ring having a turning end. A turn-locking length of the turning end is equal to the locking depth inside. The device includes a circumgyration-stop preventing a pressure being persisted to apply on the lens as the focusing ring finishes the turn of the lens. The first turn-stop surface props the first sustaining surface as the focusing ring is turned to an extremity of the turn-locking length. The focusing ring accordingly escapes the circumgyration-stop instrument for finishing the focusing of the lens in the lens-stand.

Abstract: A device and a method for locking lens in a lens holder are provided, wherein the lens is configured in a voice-coil motor (VCM) of a camera module of a cell phone and the VCM has a lens holder for a lens being fixed inside. The device includes a circumgyration stop instrument having a bottom surface for urging against the top surface of the lens holder for preventing a lateral stress and a lateral movement from occurring on the lens holder while the circumgyration stopping unit is coupled with the lens holder.

Abstract: A lens-fastening apparatus for assembling a voice coil motor of a camera module is provided. The voice coil motor has a lens holder. The lens-fastening apparatus includes a guiding plate; a rotation stopping jig having a central and a lateral portions, disposed on the guiding plate, and fit with the lens holder for stopping a rotation of the lens holder; a focusing ring for rotating the lens; a first pressing device pressing the central portion of the rotation stopping jig to fasten the rotation stopping jig on the guiding plate; and a second pressing device pressing the lateral portion of the rotation stopping jig.

Abstract: A double-layer container equipped with temperature warning device comprises a double-layer container and a temperature sensor device, wherein the temperature sensor device is disposed in a segregated store space formed at the bottom end of the double-layer container for detecting temperature of food or soup loaded in the container. A detected signal is transmitted from a temperature sensor to a microprocessor for judging to lighten a specified LED and meanwhile drive a speaker to play a corresponding song or rhythm for easy discrimination of the temperature range of the food or the soup and thereby to protect a user against being scalded.