Abstract: Embodiments of this application disclose a board, an optical module, a media access control (MAC) chip, a digital signal processor (DSP), and an information processing method. The board in the embodiments of this application includes a MAC chip, a DSP, and an equalizer. The MAC chip is configured to send first information to the DSP at an optical network unit (ONU) online stage, where the first information includes a first ONU identifier. The DSP is configured to receive the first information, and determine a first reference equalization parameter, where the first reference equalization parameter is related to the first ONU identifier. The DSP is further configured to set an equalization parameter of the equalizer to the first reference equalization parameter.

Abstract: A foldable tension spring mattress, wherein a vertical pressure is converted into a tension by means of a wrapping blanket; the tension acts on the periphery of a spring net and is converted into a pulling force acting on coil springs and penetrating springs; and then the pulling force is uniformly dispersed to each of the coil springs, so that the local overstressing of the coil springs and the penetrating springs is avoided, thereby preventing the spring net and the penetrating springs from being arched and sunken. As a result, the mattress may keep good elasticity all the time, which further increases the comfort level of the spring mattress. The present solution may alleviate the plastic deformation of the coil springs to further increase the comfort level of the spring mattress and improve the elasticity and durability of the spring mattress.

Abstract: A foldable tension spring mattress, wherein a vertical pressure is converted into a tension by means of a wrapping blanket; the tension acts on the periphery of a spring net and is converted into a pulling force acting on coil springs and penetrating springs; and then the pulling force is uniformly dispersed to each of the coil springs, so that the local overstressing of the coil springs and the penetrating springs is avoided, thereby preventing the spring net and the penetrating springs from being arched and sunken. As a result, the mattress may keep good elasticity all the time, which further increases the comfort level of the spring mattress. The present solution may alleviate the plastic deformation of the coil springs to further increase the comfort level of the spring mattress and improve the elasticity and durability of the spring mattress.

Abstract: A storage device includes a first case, a second case, and a winding body. The first case includes a first connecting portion. The second case includes a second connecting portion. The winding body winds an object thereon. The first connecting portion is slidably coupled within the second connecting portion. The winding body is sleeved over the second connecting portion.

Abstract: A storage device includes a first case, a second case, and a winding body. The first case includes a first connecting portion. The second case includes a second connecting portion. The winding body winds an object thereon. The first connecting portion is slidably coupled within the second connecting portion. The winding body is sleeved over the second connecting portion.

Abstract: A computing device performs a method to analyze a STEP (standardized exchange of product) formatted file of a measurement graphics, and to predefine one or more graphic keywords and graphics analysis modes in a storage device of the computing device. The method extracts a content keyword and a content character string from each line of the STEP formatted file, and analyzes the content keywords and the content character strings to obtain shell data of the graphic elements. The method further draws a geometrical shell of the measurement graphics according to the shell data using a curve meshing method, marks boundaries of the geometrical shell using an indication mark, and displays the measurement graphics with the indication mark on a display device of the computing device.

Abstract: In a method and a computing device for establishing a coordinate system on a surface of an object, a three dimensional computer aided design (CAD) model of the surface of the object is converted to a two dimensional UV plane. A triangular mesh model of the CAD model is generated. Points are selected from the triangular mesh model, and real points that corresponding to the points are sampled on the surface of the object. A conversion matrix is computed by aligning the real points and the points selected from the triangular mesh model; and the coordinate system is established according to the conversion matrix.

Abstract: In a method for analyzing a STEP formatted file of a measurement graphics using a computing device, one or more graphic keywords and graphics analysis modes are predefined in a storage device of the computing device. The method extracts a content keyword and a content character string from each line of the STEP formatted file, and analyzes the content keywords and the content character strings to obtain shell data of the graphic elements. The method further draws a geometrical shell of the measurement graphics according to the shell data using a curve meshing method, marks boundaries of the geometrical shell using an indication mark, and displays the measurement graphics with the indication mark on a display device of the computing device.