Abstract: A semiconductor memory, comprising a negative voltage providing unit, which is used for providing a first negative voltage to a word line during a read operation, and comprises: a clamping unit that comprises an input end, a control end and an output end, wherein the input end is coupled to a common ground end of the memory, and the control end is used for receiving a first signal; an energy storage capacitor, a first end of which is coupled to the output end, and a second end that is used for receiving a second signal; and a negative voltage providing end which is coupled to the first end, wherein the clamping unit is used for: pulling the voltage at the output end to the voltage at the input end when the first signal is “0”; and clamping the output end at a clamping voltage when the first signal is “1”.

Abstract: A screen transmission processing method and device. The method includes determining that a source device is connected to a screen transmission device, wherein the screen transmission device is configured to be in a communication connection with a target device with which a pairing is completed; determining that a screen transmission client has been installed in the source device; determining that the screen transmission client is in a state to be updated; in response to the state to be updated, acquiring an update file of the screen transmission client from the target device through the screen transmission device; and according to the update file, updating the screen transmission client.

Abstract: A floating structure and basic module of a floating structure are presented. The floating structure includes multiple lower floating bodies, an upper structure, and intermediate connection structures. The multiple lower floating bodies include multiple distributed elongated floating bodies. The floating bodies are spaced from each other by a certain distance. The sum of the displacement volumes of the floating bodies is greater than the displacement volume when the floating structure as a whole is fully loaded. The intermediate connection structures include at least multiple connection structures in a first direction, the first direction intersecting the horizontal plane. A connection structure in the first direction corresponds to a single elongated floating body connected to three or more spaced structures. The cross-section width of each intermediate connection structure in the horizontal direction is less than the width of the corresponding elongated floating body.

Abstract: A highly safe large floating structure, and a basic module of a very large floating structure, includes multiple lower floating bodies, an upper structure, and intermediate connection structures. The multiple lower floating bodies include multiple distributed strip-shaped floating bodies. The floating bodies are spaced from each other by a certain distance. The sum of the displacement volumes of the floating bodies is greater than the displacement volume when the floating structure as a whole is fully loaded. The intermediate connection structures include at least multiple connection structures in a first direction, the first direction intersecting the horizontal plane. A connection structure in the first direction corresponds to a single strip-shaped floating body connected to three or more spaced structures. The cross-section width of each intermediate connection structure in the horizontal direction is less than the width of the corresponding strip-shaped floating body.

Abstract: A head-up display with variable focal length includes a projector which provides a beam with image, a magnifier lens module which is disposed on the route of the beam, and an array of lens which is movably disposed between the projector and the magnifier lens module. The beam forms an inter-image after passing the array of lens, then forms a virtual image after passing the magnifier lens module. To change the position of the virtual image, adjust the relative position between the array of lens and the magnifier lens module. A dispersion angle of the array of lens is ?d, a magnification of the magnifier lens module is M, a distance between the virtual image and user's eyes is VID, a visible range of user's eyes is Et, and satisfies the relationship as following: ?d=M*2*cot?1 (2VID/Et).

Abstract: A head-up display with variable focal length includes a projector which provides a beam with image, a magnifier lens module which is disposed on the route of the beam, and an array of lens which is movably disposed between the projector and the magnifier lens module. The beam forms an inter-image after passing the array of lens, then forms a virtual image after passing the magnifier lens module. To change the position of the virtual image, adjust the relative position between the array of lens and the magnifier lens module. A dispersion angle of the array of lens is ?d, a magnification of the magnifier lens module is M, a distance between the virtual image and user's eyes is VID, a visible range of user's eyes is Et, and satisfies the relationship as following: ?d=M*2*cot?1 (2VID/Et).