Abstract: A digital exposure machine and an exposure control method thereof are disclosed. The exposure control method of the digital exposure machine includes: determining a scanning direction of the digital exposure machine, wherein a plurality of sub-pixels in an array include multiple rows of sub-pixels arranged in the scanning direction, the multiple rows of sub-pixels including a first row of sub-pixels in the scanning direction; determining a starting scanning position, the starting scanning position being located on an outer side of the first row of sub-pixels in the scanning direction; and performing a plurality of scannings to expose a display region of the first display substrate to be exposed, wherein a scanning pitch for each of the plurality of scannings is integer times of a pitch of two adjacent rows of sub-pixels of the first display substrate in the scanning direction.

Abstract: An over-current protection circuit for composite transistor devices is provided, connected between an input terminal and a load, and including: a control-terminal voltage-generation module whose output voltage varies with its input voltage when driven by a first voltage, wherein the output voltage of the control-terminal voltage-generation module serves as a control-terminal voltage; a composite transistor device, connected between the control-terminal voltage-generation module and the load, configured to conduct in response to the control-terminal voltage and a second voltage to generate an output current flowing through the load; and an over-current protection module, connected between the composite transistor device and the load, wherein when the output current of the composite transistor device exceeds a preset limit, a clamping voltage is applied to the composite transistor device by the over-current protection module to limit a current flowing through the composite transistor device, thereby limiting th

Abstract: An over-current protection circuit for composite transistor devices is provided, connected between an input terminal and a load, and including: a control-terminal voltage-generation module whose output voltage varies with its input voltage when driven by a first voltage, wherein the output voltage of the control-terminal voltage-generation module serves as a control-terminal voltage; a composite transistor device, connected between the control-terminal voltage-generation module and the load, configured to conduct in response to the control-terminal voltage and a second voltage to generate an output current flowing through the load; and an over-current protection module, connected between the composite transistor device and the load, wherein when the output current of the composite transistor device exceeds a preset limit, a clamping voltage is applied to the composite transistor device by the over-current protection module to limit a current flowing through the composite transistor device, thereby limiting th

Abstract: The present disclosure relates to an image processing method and apparatus, and a storage medium. The method includes: performing feature extraction on a to-be-processed image to obtain an intermediate processing image; performing segmentation processing on the intermediate processing image to obtain a first segmentation result; and performing structure reconstruction on the first segmentation result according to structure information of the first segmentation result, to obtain a final segmentation result of a target object in the to-be-processed image. According to the embodiments of the present disclosure, further correction of the segmentation result of the to-be-processed image can be implemented according to the structure information of the target object in the to-be-processed image, thereby improving the integrity and the accuracy of the segmentation result, and then improving the precision of image processing.

Abstract: Provided in the invention is an SCR system urea mixer. The SCR system urea mixer comprises an outer pipe and an inner pipe arranged in the outer pipe. The outer pipe comprises an air inlet cone pipe (11) and an air inlet straight pipe (12) connected with the air inlet cone pipe (11). The inner pipe comprises an air inlet rectifying pipe (21) and a porous pipe (22). The porous pipe (22) is sleeved outside the air inlet rectifying pipe (21). The air inlet rectifying pipe (21) is provided with an airstream rotating mechanism (211), and the airstream rotating mechanism (211) is used for rotating exhaust gas which enters into the air inlet cone pipe (11). A rotating structure and a porous structure are used in the SCR system urea mixer, so that urea and engine exhaust are fully mixed; and the SCR system urea mixer is provided with heat preservation measures to prevent the crystallization of the urea.

Abstract: A method for detecting frequency offset of an oscillator includes: receiving an oscillation signal having an oscillation frequency; generating a self-mixing signal according to the oscillation signal; performing frequency division upon the self-mixing signal to obtain a down-converted self-mixing signal; obtaining a down-converted self-mixing frequency corresponding to a maximum power in a specific frequency range of the down-converted self-mixing signal; and computing a frequency offset of the oscillation frequency according to at least the oscillation frequency and the down-converted self-mixing frequency. A related circuit is also disclosed.

Abstract: A method for detecting frequency offset of an oscillator includes: receiving an oscillation signal having an oscillation frequency; generating a self-mixing signal according to the oscillation signal; performing frequency division upon the self-mixing signal to obtain a down-converted self-mixing signal; obtaining a down-converted self-mixing frequency corresponding to a maximum power in a specific frequency range of the down-converted self-mixing signal; and computing a frequency offset of the oscillation frequency according to at least the oscillation frequency and the down-converted self-mixing frequency. A related circuit is also disclosed.