Abstract: The invention relates to an iso-focus control system for emission laser light and target detection light, including a beam iso-focus detection unit, a control unit, a target light defocusing correction unit and an emission laser light defocusing correction unit; wherein the beam iso-focus detection unit is configured to detect the defocusing amount of the target detection light and the defocusing amount of the emission laser light; the control unit is configured to control the target light defocusing correction unit according to the defocusing amount of the target detection light, and control the emission laser light defocusing correction unit according to the defocusing amount of the emission laser light so that the difference between the defocusing amounts of the corrected target detection light and the corrected emission laser light is within a set range.

Abstract: The present invention relates to a parallelism control system of an emission laser light optical axis and a target tracking optical axis, including an optical axis parallelism detection unit, a control unit, a target tracking optical axis correction unit and an emission laser light optical axis correction unit; wherein the optical axis parallelism detection unit is configured to detect the offset amount of the target tracking optical axis and the offset amount of the emission laser light optical axis; the control unit is configured to control the target tracking optical axis correction unit according to the offset amount of the target tracking optical axis, and control the emission laser light optical axis correction unit according to the offset amount of the emission laser light optical axis.

Abstract: An embodiment of the disclosure relates to the field of data transmission, in particular to a data transmission method and a data transmission device, for solving the problems of low data transmission efficiency and poor Direct Memory Access (DMA) performance in a method of arbitrating each DMA channel in a round-robin mode and transmitting data according to an arbitration result. The method in the embodiment of the disclosure includes that: for each DMA channel, an arbitration unit corresponding to the channel among a plurality of arbitration units is determined according to transmission performance corresponding to data in the channel; and when data in channels corresponding to at least two arbitration units need to be transmitted, the data are transmitted according to priorities of the at least two arbitration units.

Abstract: An embodiment of the disclosure relates to the field of data transmission, in particular to a data transmission method and a data transmission device, for solving the problems of low data transmission efficiency and poor Direct Memory Access (DMA) performance in a method of arbitrating each DMA channel in a round-robin mode and transmitting data according to an arbitration result. The method in the embodiment of the disclosure includes that: for each DMA channel, an arbitration unit corresponding to the channel among a plurality of arbitration units is determined according to transmission performance corresponding to data in the channel; and when data in channels corresponding to at least two arbitration units need to be transmitted, the data are transmitted according to priorities of the at least two arbitration units.

Abstract: A performance test apparatus includes a control unit, an image taking device, and a base having a table and a frame mounted to the table. The image taking device includes at least one image taker and at least one parallel light source. The at least one image taker is movably mounted to the frame and electrically connected to the control unit. The at least one parallel light source faces the table and is electrically connected to the control unit. The least one parallel light source includes a plurality of spot light sources. The control unit controls on/off of the at least one parallel light source, so that the at least one parallel light source flickers at a high frequency.

Abstract: A performance test apparatus includes a control unit, an image taking device, and a base having a table and a frame mounted to the table. The image taking device includes at least one image taker and at last one parallel light source. The at least one image taker is movably mounted to the frame and electrically connected to the control unit. The at least one parallel light source faces the table and is electrically connected to the control unit. The least one parallel light source includes a plurality of spot light sources. The control unit controls on/off of the at least one parallel light source, so that the at least one parallel light source flicker at a high frequency.

Abstract: A process of preparing superconducting magnesium diboride powder by heating an admixture of solid magnesium and amorphous boron powder or pellet under an inert atmosphere in a Mg:B ratio of greater than about 0.6:1 at temperatures and for time sufficient to form said superconducting magnesium diboride. The process can further include exposure to residual oxygen at high synthesis temperatures followed by slow cooling. In the cooling process oxygen atoms dissolved into MgB2 segregated to form nanometer-sized coherent Mg(B,O) precipitates in the MgB2 matrix, which can act as flux pinning centers.