Abstract: A modulation device includes a substrate, an electrostatic discharge protection element, an electronic element, and a driving element. The substrate has an active region. The electrostatic discharge protection element is arranged around the active region. The electronic element is disposed in the active region. The driving element is electrically connected to the electronic element.

Abstract: The present disclosure provides a method for preparing a composition including mesenchymal stem cells, extracellular vesicles produced by the mesenchymal stem cells, and growth factors, the composition prepared by the method, and use of the composition for treating arthritis. The composition of the present disclosure achieves the effect of treating arthritis through various efficacy experiments.

Abstract: The present disclosure provides an electronic wearable device. The electronic wearable device includes a first module having a first contact and a second module having a second contact. The first contact is configured to keep electrical connection with the second contact in moving with respect to each other during a wearing period.

Abstract: A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector.

Abstract: A projector focusing method includes acquiring a plane angle of a light beam and acquiring a first distance and a second distance between two sides of a light beam edge displayed on a projection plane and a time of flight device after the time of flight device emits the light beam to the projection plane, acquiring a plane equation of the projection plane according to the first distance and the second distance, acquiring an optical axis vector of a digital micro-mirror device (DMD) disposed inside the projector, designating target coordinates of the DMD, converting the target coordinates to the projection target coordinates on the projection plane according to the plane equation, acquiring an customized emitting vector according to the projection target coordinates and a lens position of the projector, and acquiring an ideal focal distances of the projector according to the customized emitting vector and the optical axis vector.

Abstract: A projection system includes a projector, a depth sensor, an inertia measurement unit and a processor. The depth sensor and the inertia measurement unit are fixed at the projector. A projection method includes the inertia measurement unit performing a 3-axis acceleration measurement to generate an orientation of the projector, the depth sensor detecting a plurality of coordinates of a plurality of points on a projection surface, the processor performing a keystone correction according to at least the plurality of coordinates of the plurality of points on the projection surface to generate a calibrated projection region, the processor generating a set of data according to at least the orientation of the projector, the calibrated projection region and the plurality of coordinates, and the projector projecting a pre-warped image onto the projection surface according to the set of data.

Abstract: A waste container includes a metal body (11) having a peripheral wall (111) defining a compartment (112) for receiving a garbage bag (15). Mounted above the body (11) is a cover (13) having a lid (133) movable between an open position and a closed position. An electrostatic device (2) is mounted to the cover (13) and operably connected to the lid (133). The lid (133) is moved from the open position to the closed position when the human body is within a detection range of a sensor (21) of the electrostatic device (2). A hollow frame (12) is mounted between the body (11) and the cover (13) and includes a perimeter wall (121) made of non-electrically conductive material. The body (11) is spaced from the cover (13) by the perimeter wall (121) and located outside the detection range of the sensor (21), preventing electrostatic interaction between the body (11) and the sensor (21).