Abstract: The present disclosure provides an electron source operating method, the electron source including at least one emission site fixed on a tip, the emission site being a reaction product formed by metal atoms of a surface of the tip and gas molecules under an electric field, and the operating method comprises emitting electrons by controlling operating parameters of the electron source.

Abstract: The present disclosure provides a method of regenerating an electron source, the electron source including at least one emission site fixed on a needle tip, and the emission site including a reaction product formed by metal atoms and gas molecules. The method includes regenerating the electron source in situ if an emission capability of the electron source satisfies a regeneration condition.

Abstract: The present disclosure provides a method of manufacturing an electron source. The method includes forming one or more fixed emission sites on at least one needle tip, the fixed emission sites including a reaction product formed by metal atoms on a surface of the needle tip and gas molecules.

Abstract: Provided are a battery module, a secondary battery and a cap plate assembly. The battery module includes a plurality of secondary batteries arranged in sequence. The secondary battery includes an electrode assembly, a case and a cap plate assembly. The electrode assembly is received in the case and the cap plate assembly is connected to the case. The cap plate assembly includes a cap plate, an explosion-proof sheet and a fixing piece. The cap plate is disposed with a through hole, the explosion-proof sheet is disposed at the cap plate and seals the through hole, and the explosion-proof sheet has a weak region. The fixing piece connects the cap plate and the explosion-proof sheet. The fixing piece has a lower melting point than the cap plate and the explosion-proof sheet.

Abstract: Embodiments of object detection method, device, apparatus and a computer-readable storage medium are provided. The method can include: obtaining an enclosing frame of a target object in an input image; according to the enclosing frame, determining a reference frame from a predetermined candidate frame set comprising a plurality of candidate frames; generating a size-related feature according to a size of the reference frame and a size of the enclosing frame; and detecting an object in the input image by applying the size-related feature in a machine learning model. In an embodiment of the present application, the object detection is performed by using a feature related to an object size, that is, the prediction criterion related to the object size is added to an original feature in a machine learning model, thereby further improving the accuracy of the object detection.

Abstract: The present invention discloses a lithium ion battery, including a battery shell, a battery top cap mounted on the battery shell, and a relief valve provided on the battery shell and/or the battery top cap; the lithium ion battery further includes a safety protection device that is provided on the battery shell and/or the battery top cap and that fixedly fits with the relief valve; where the safety protection device includes a baffle plate opposite to the relief valve, a side wall and a gas flow channel structure; the side wall extends, from the baffle plate, toward the battery shell or the battery top cap, and is connected with the battery shell or the battery top cap; and the gas flow channel structure is formed on the side wall.

Abstract: A computer-implemented image composition method and apparatus, wherein, after a user selects a base image from a plurality of sequential images, and specifies an area to be modified, the content of the specified area in the base image is replaced with the content of a corresponding area in the remaining images one by one, and the base image after the replacement is output for a user's previewing and determination. It is possible to improve the quality of the images sequentially captured by applying the present disclosure.

Abstract: A computer-implemented image composition method and apparatus, wherein, after a user selects a base image from a plurality of sequential images, and specifies an area to be modified, the content of the specified area in the base image is replaced with the content of a corresponding area in the remaining images one by one, and the base image after the replacement is output for a user's previewing and determination. It is possible to improve the quality of the images sequentially captured by applying the present disclosure.

Abstract: A method of outputting video content from a digital media server to a digital media renderer includes providing a digital media controller to select a digital media renderer for video playback, sending a playback request from the digital media controller to the selected digital media renderer, the selected digital media renderer requesting data from the digital media server in response to receiving the playback request from the digital media controller, and the digital media server capturing video and capturing audio. The method further includes the digital media server encoding the captured video and the captured audio to respectively produce encoded video and encoded audio, outputting the encoded video and the encoded audio from the digital media server to the selected digital media renderer, and playing the encoded video and the encoded audio on the selected digital media renderer.

Abstract: A method of outputting video content from a digital media server to a digital media renderer includes providing a digital media controller to select a digital media renderer for video playback, sending a playback request from the digital media controller to the selected digital media renderer, the selected digital media renderer requesting data from the digital media server in response to receiving the playback request from the digital media controller, and the digital media server capturing video and capturing audio. The method further includes the digital media server encoding the captured video and the captured audio to respectively produce encoded video and encoded audio, outputting the encoded video and the encoded audio from the digital media server to the selected digital media renderer, and playing the encoded video and the encoded audio on the selected digital media renderer.