Abstract: Systems and methods provide multi-function authentication. One exemplary method includes receiving a request to opt into multi-function authentication. A primary operation-based key is generated by the communication device, the operation-based key accessible based on authentication of the user and available for use after the authentication. The primary key is imported, by an application, into a secure key data structure, such that it is only accessible by the application. When the biometric authentication of the user is successful, the communication device transmits to an account server an indication that the user is eligible for multi-function authentication. The communication device receives a time-based secondary key from the account server, wherein the time-based key is useable only during a defined interval. The application links the secondary key to the primary key and imports the secondary key into the data structure such that it is only accessible via the primary key.

Abstract: A central lock for a folding tent includes a central lock rod, an upper lock plate fixedly disposed at one end of the central lock rod, and a lower lock plate assembly detachably connected to the other end of the central lock rod. An elastic locking member and an unlocking mechanism used to control the elastic locking member to be locked are disposed in the lower lock plate assembly. The elastic locking member includes an arc-shaped portion provided integrally and two horizontal locking rods extending inwards from a gap of the arc-shaped portion. A lower end portion of the central lock rod is provided with a locking groove used in cooperation with the locking rod and a clamping and locking portion located at a lower end of the locking groove.

Abstract: A central locking apparatus for a folding tent includes a top plate, a bottom plate assembly, and a center rod disposed between the top plate and the bottom plate assembly. The bottom plate assembly includes a bottom plate, a wrench assembly rotatably connected to the bottom plate, and a limit sleeve slidably connected in the bottom plate. The wrench assembly abuts on the limit sleeve, and the wrench assembly is capable of driving the limit sleeve to slide. A limiting component is disposed at a lower end of the center rod, the limiting component may be built into the bottom plate to fit the limit sleeve in a locking manner, and a first elastic element is disposed between the limit sleeve and the bottom plate through fitting.

Abstract: The present disclosure discloses a map display method performed at a terminal. The method includes: obtaining a real scene image of a current location and target navigation data of navigation from the current location to a destination; determining, according to the current location and the target navigation data, virtual navigation prompt information to be overlaid in the real scene image; determining, according to a device configuration parameter of a target device capturing the real scene image, a first location on which the virtual navigation prompt information is overlaid in the real scene image; performing verification detection on the current device configuration parameter; and overlaying the virtual navigation prompt information on the first location when the current device configuration parameter passes through the verification detection. According to the present disclosure, an AR technology is applied to the navigation field so that map display manners are more diverse and diversified.

Abstract: In a road shoulder extraction method, three-dimensional scan data of a plurality of frames is obtained. At least one high spatial point in the three-dimensional scan data of the plurality of frames is removed, to obtain three-dimensional scan data sets of the plurality of frames. A search is performed for a curvature change point and an elevation change point in each of the three-dimensional scan data sets of the plurality of frames. A search is performed for a road shoulder location point in the three-dimensional scan data set of each of the plurality of frames according to the curvature change point and the elevation change point in the three-dimensional scan data set of the respective frame. The road shoulder location point in the three-dimensional scan data set of each of the plurality of frames is extracted according to a preset algorithm. The extracted road shoulder location points are connected to obtain a road shoulder line.

Abstract: Systems and methods provide multi-function authentication. One exemplary method includes receiving a request to opt into multi-function authentication. A primary operation-based key is generated by the communication device, the operation-based key accessible based on authentication of the user and available for use after the authentication. The primary key is imported, by an application, into a secure key data structure, such that it is only accessible by the application. When the biometric authentication of the user is successful, the communication device transmits to an account server an indication that the user is eligible for multi-function authentication. The communication device receives a time-based secondary key from the account server, wherein the time-based key is useable only during a defined interval. The application links the secondary key to the primary key and imports the secondary key into the data structure such that it is only accessible via the primary key.

Abstract: A method and apparatus for determining lane center line are provided. The method may include obtaining a target lane in a first road segment from a database, the first road segment being a road segment having a changed lane quantity, the target lane being an added or subtracted lane, two side lane lines of the target lane being respectively connected to two side lane lines of a first lane at two endpoints of a first end of the target lane, the two side lane lines of the target lane intersecting at an intersection point at a second end of the target lane and the intersection point being connected to a side lane line of a second lane.

Abstract: An indicator circuit (10) includes a first light emission device (R1 and D1) configured to be driven by a first voltage (Von) to emit light; a second light emission device (R2 and D2) configured to be driven by a second voltage (Vstb) to emit light; and a control device (Q1, D3 and R3) configured to be driven by the first voltage (Von) and the second voltage (Vstb) to allow the first light emission device (R1 and D1) to be driven when the first voltage (Von) is active but the second voltage (Vstb) is not active and not to allow the first light emission device (R1 and D1) to be driven when the first voltage (Von) and the second voltage (Vstb) are active.

Abstract: A method for calibrating a laser scanning device is performed at a computing device. After obtaining, based on at least two frames obtained by a laser scanning device, first coordinates of a surface feature element in each frame of point cloud data, the computing device determines, based on map data of the target region of a vehicle, second coordinates of the surface feature element in each frame of point cloud data in a vehicle coordinate system. For each frame of point cloud data, the computing device determines a pose offset of each frame of point cloud data according to the first and second coordinates of the surface feature element and calculates a value of a laser extrinsic parameter of the laser scanning device according to pose offsets of the at least two frames of point cloud data, to calibrate the laser scanning device.

Abstract: Aspects of the disclosure provide a method for processing point cloud data. A plurality of frames of the point cloud data collected from an environment surrounding a pathway are classified into categories based on distances between three-dimensional points of respective frames of the point cloud data and a reference plane of the respective frame of the point cloud data. The distances indicate heights of the three-dimensional points of the plurality of frames of the point cloud data. The frames of the point cloud data of a same one of the categories that matches a pathway object are merged. Candidate point cloud data of three-dimensional points having distances from the pathway that satisfy a predetermined condition is extracted from the merged frames of the point cloud data. Point cloud data conforming to a feature of the pathway object is extracted from the candidate point cloud data.

Abstract: A method for acquiring traffic sign information includes acquiring an image of a scene comprising a traffic sign, the image being obtained by photographing the scene, using a photographing apparatus, acquiring first laser data of the scene, the first laser data being obtained by performing laser scanning on the scene, and the first laser data being of a plurality of first laser points, performing spatial clustering on the plurality of first laser points to obtain candidate point sets, acquiring a spatial distribution feature of respective laser points in each of the candidate point sets, determining at least one point set corresponding to the traffic sign in the candidate point sets, based on the spatial distribution feature, extracting image data of the traffic sign, from the image, using the at least one point set corresponding to the traffic sign, and extracting sign information of the traffic sign, from the image data.

Abstract: In a road shoulder extraction method, three-dimensional scan data of a plurality of frames is obtained. At least one high spatial point in the three-dimensional scan data of the plurality of frames is removed, to obtain three-dimensional scan data sets of the plurality of frames. A search is performed for a curvature change point and an elevation change point in each of the three-dimensional scan data sets of the plurality of frames. A search is performed for a road shoulder location point in the three-dimensional scan data set of each of the plurality of frames according to the curvature change point and the elevation change point in the three-dimensional scan data set of the respective frame. The road shoulder location point in the three-dimensional scan data set of each of the plurality of frames is extracted according to a preset algorithm. The extracted road shoulder location points are connected to obtain a road shoulder line.

Abstract: The present disclosure provides a tablet computer. The tablet computer includes a battery and a voltage regulator circuit, wherein the voltage regulator circuit includes a step-up circuit for raising a voltage supplied by the battery in order to utilizing the raised voltage to charge an external device connected with the tablet computer.

Abstract: The present invention discloses a television backlight driving device and the driving method thereof, the said television backlight driving device comprises: an AC-DC module and an LED driving module; when a power is on, the said AC-DC module transforms an input supplied AC power into a DC power before supplying to the backlight LED lightstrip; comparing to the existing backlight driving methods, there is no second process of DC-DC needed, saving a system cost of the power, and improving an efficiency of the system; when the LED driving module determines the detection current larger than the preset current but smaller than the first threshold, a constant-current output for LED current is controlled by adjusting the duty ratio; when the detection current is larger than the first threshold or smaller than the preset current, the LED driving module feeds back the detection current to the AC-DC module; the AC-DC module then controls the DC voltage according to the detection current; different methods for adjustme

Abstract: An indicator circuit (10) includes a first light emission device (R1 and D1) configured to be driven by a first voltage (Von) to emit light; a second light emission device (R2 and D2) configured to be driven by a second voltage (Vstb) to emit light; and a control device (Q1, D3 and R3) configured to be driven by the first voltage (Von) and the second voltage (Vstb) to allow the first light emission device (R1 and D1) to be driven when the first voltage (Von) is active but the second voltage (Vstb) is not active and not to allow the first light emission device (R1 and D1) to be driven when the first voltage (Von) and the second voltage (Vstb) are active.

Abstract: The present invention discloses a television backlight driving device and the driving method thereof, the said television backlight driving device comprises: an AC-DC module and an LED driving module; when a power is on, the said AC-DC module transforms an input supplied AC power into a DC power before supplying to the backlight LED lightstrip; comparing to the existing backlight driving methods, there is no second process of DC-DC needed, saving a system cost of the power, and improving an efficiency of the system; when the LED driving module determines the detection current larger than the preset current but smaller than the first threshold, a constant-current output for LED current is controlled by adjusting the duty ratio; when the detection current is larger than the first threshold or smaller than the preset current, the LED driving module feeds back the detection current to the AC-DC module; the AC-DC module then controls the DC voltage according to the detection current; different methods for adjustme

Abstract: The present disclosure provides a tablet computer. The tablet computer includes a battery and a voltage regulator circuit, wherein the voltage regulator circuit includes a step-up circuit for raising a voltage supplied by the battery in order to utilizing the raised voltage to charge an external device connected with the tablet computer.

Abstract: Disclosed is an auto-diluting and rinsing apparatus, comprising: a concentrated detergent container for holding concentrated detergent to be diluted; a diluter container for holding diluter, which is used to dilute the concentrated detergent; and a diluted detergent container for holding diluted detergent for rinsing, which are formed by mixing the concentrated detergent and the diluter; wherein the concentrated detergent container and the diluter container are communicated with a high pressure gas source, respectively, and the apparatus further comprising: a gas path controller, configured to control the diluted detergent container to be communicated with a low pressure gas source via a first gas path during a dilution process; and to be communicated with a high pressure gas source during a rinsing process.

Abstract: The present invention provides a grating photometer comprising a light splitting box, a preamplifier box, a photodiode array and optical assembly. The light splitting box has a light splitting chamber. There are provided a first extinction hole and second extinction hole respectively on the side wall of the light splitting chamber and on the preamplifier box to correspond to zero order spectrum line. The first hole is a through hole and the second hole is a blind hole. The configuration of the first and second extinction holes direct the zero order spectrum to go into the second extinction hole, as a result, generates a rather small number of stray light in the light splitting chamber coming from the scattering of the zero order spectrum from the second extinction hole, thus suppresses effectively the stray light and improves the signal-to-noise ratio of the photometer.

Abstract: Disclosed is an auto-diluting and rinsing apparatus, comprising: a concentrated detergent container for holding concentrated detergent to be diluted; a diluter container for holding diluter, which is used to dilute the concentrated detergent; and a diluted detergent container for holding diluted detergent for rinsing, which are formed by mixing the concentrated detergent and the diluter; wherein the concentrated detergent container and the diluter container are communicated with a high pressure gas source, respectively, and the apparatus further comprising: a gas path controller, configured to control the diluted detergent container to be communicated with a low pressure gas source via a first gas path during a dilution process; and to be communicated with a high pressure gas source during a rinsing process.