Abstract: Embodiments of this application provide a packet transmission method and apparatus, and relate to the field of communication technologies. When the packet transmission method is applied, a first packet may be determined by using a first device, where packet fields of the first packet include an authentication identifier field, an authentication code field, and at least one candidate authentication field, and the authentication identifier field indicates a field that is in the at least one candidate authentication field and that corresponds to the authentication code field; and then the first packet is sent.

Abstract: A method for inversion of a path mileage and offset by using a known coordinate point, comprising: based on coordinates of a known point P and curve elements of a start location and an end location of a curve element, first segmenting or not segmenting the curve element according to a corner of the curve element to obtain a plurality of curve sub-elements (AiBi), and calculating curve elements of the curve sub-elements (AiBi); taking any curve sub-element (AiBi) to calculate a half chord length S and a straight corner ?, and performing precision determination and convergence correction according to S and ?, the point P being always effective with respect to the curve sub-element (AiBi) in the correction process; and performing cyclic convergence calculation to finally obtain a distance from the point P to any point on a chord line or an arc line as an offset of the curve sub-element (AiBi) corresponding to the point P and to obtain a mileage of the curve sub-element (AiBi) corresponding to the point P.

Abstract: A method for inversion of a path mileage and offset by using a known coordinate point, comprising: based on coordinates of a known point P and curve elements of a start location and an end location of a curve element, first segmenting or not segmenting the curve element according to a corner of the curve element to obtain a plurality of curve sub-elements (AiBi), and calculating curve elements of the curve sub-elements (AiBi); taking any curve sub-element (AiBi) to calculate a half chord length S and a straight corner ?, and performing precision determination and convergence correction according to S and ?, the point P being always effective with respect to the curve sub-element (AiBi) in the correction process; and performing cyclic convergence calculation to finally obtain a distance from the point P to any point on a chord line or an arc line as an offset of the curve sub-element (AiBi) corresponding to the point P and to obtain a mileage of the curve sub-element (AiBi) corresponding to the point P.

Abstract: An automatic clamping holder for a mobile device includes a base, a bottom support arm, left and right clamping arms, left and right pressing arms, and a trigger mechanism. The base is provided with left and right slide grooves. A first elastic member is disposed in each of the left and right slide grooves. The holder is provided with the trigger mechanism and the left and right pressing arms for controlling the opening and closing of the holder. The mobile device can be placed in or taken out from the holder more quickly and flexibly, thereby providing convenience for the user.

Abstract: An articulated full-automatic rotary clamping holder includes a rear base, a bottom support arm, a left holding arm and a right holding arm. The rear base is fixedly connected with a return elastic member extending vertically for returning the bottom support arm upward. One end of the return elastic member is fixed to the rear base. Another end of the return elastic member is connected to the bottom support arm.

Abstract: An articulated full-automatic rotary clamping holder includes a rear base, a bottom support arm, a left holding arm and a right holding arm. The rear base is fixedly connected with a return elastic member extending vertically for returning the bottom support arm upward. One end of the return elastic member is fixed to the rear base. Another end of the return elastic member is connected to the bottom support arm.

Abstract: An automatic clamping holder for a mobile device includes a base, a bottom support arm, left and right clamping arms, left and right pressing arms, and a trigger mechanism. The base is provided with left and right slide grooves. A first elastic member is disposed in each of the left and right slide grooves. The holder is provided with the trigger mechanism and the left and right pressing arms for controlling the opening and closing of the holder. The mobile device can be placed in or taken out from the holder more quickly and flexibly, thereby providing convenience for the user.

Abstract: Disclosed in the present invention is a support capable of fully-automatically performing rotary clamping by means of linkage between a gear and a rack. The support includes a back side base, a bottom supporting arm, a left-side gripping arm and a right-side gripping arm. A left-side vertical spur rack portion and a right-side vertical spur rack portion are disposed on the left and right sides of the bottom supporting arm. A left-side gear engages with the left side of the left-side vertical spur rack portion, and a right-side gear engages with the right side of the right-side vertical spur rack portion. An inner end of the left-side gripping arm is connected to the left-side gear, an inner end of the right-side gripping arm is connected to the right-side gear, the left-side gripping arm rotates with the left-side gear, and the right-side gripping arm rotates with the right-side gear.

Abstract: A full-automatic horizontal clamping holder includes a rear base, a bottom support arm, a left holding arm and a right holding arm mounted to the rear base. The full-automatic horizontal clamping holder further includes a return elastic member extending vertically for returning the bottom support arm upward. A linkage assembly is provided between the bottom support arm and the left and right holding arms for linking the left and right holding arms to horizontally move inward or outward so as to clamp or release a mobile phone.

Abstract: A full-automatic horizontal clamping holder includes a rear base, a bottom support arm, a left holding arm and a right holding arm mounted to the rear base. The full-automatic horizontal clamping holder further includes a return elastic member extending vertically for returning the bottom support arm upward. A linkage assembly is provided between the bottom support arm and the left and right holding arms for linking the left and right holding arms to horizontally move inward or outward so as to clamp or release a mobile phone.

Abstract: A full-automatic horizontal clamping holder includes a rear base, a bottom support arm, a left holding arm and a right holding arm mounted to the rear base. The full-automatic horizontal clamping holder further includes a return elastic member extending vertically for returning the bottom support arm upward. A linkage assembly is provided between the bottom support arm and the left and right holding arms for linking the left and right holding arms to horizontally move inward or outward so as to clamp or release a mobile phone.

Abstract: Disclosed in the present invention is a support capable of fully-automatically performing rotary clamping by means of linkage between a gear and a rack. The support includes a back side base, a bottom supporting arm, a left-side gripping arm and a right-side gripping arm. A left-side vertical spur rack portion and a right-side vertical spur rack portion are disposed on the left and right sides of the bottom supporting arm. A left-side gear engages with the left side of the left-side vertical spur rack portion, and a right-side gear engages with the right side of the right-side vertical spur rack portion. An inner end of the left-side gripping arm is connected to the left-side gear, an inner end of the right-side gripping arm is connected to the right-side gear, the left-side gripping arm rotates with the left-side gear, and the right-side gripping arm rotates with the right-side gear.

Abstract: A parallelogram linkage automatic clamping holder includes a rear base, a bottom support arm, a left clamping arm, a right clamping arm, and a return elastic member. When in use, the bottom support arm is moved downward by the weight of a mobile phone. By the deformation principle of the parallelogram, clamping parts move inward obliquely upward to clamp the mobile phone automatically. The clamping surfaces of the clamping parts don't have an angle change to ensure that the mobile phone has a larger contact surface with the clamping surfaces, providing a better clamping effect.

Abstract: A parallelogram linkage automatic clamping holder includes a rear base, a bottom support arm, a left clamping arm, a right clamping arm, and a return elastic member. When in use, the bottom support arm is moved downward by the weight of a mobile phone. By the deformation principle of the parallelogram, clamping parts move inward obliquely upward to clamp the mobile phone automatically. The clamping surfaces of the clamping parts don't have an angle change to ensure that the mobile phone has a larger contact surface with the clamping surfaces, providing a better clamping effect.

Abstract: A full-automatic horizontal clamping holder includes a rear base, a bottom support arm, a left holding arm and a right holding arm mounted to the rear base. The full-automatic horizontal clamping holder further includes a return elastic member extending vertically for returning the bottom support arm upward. A linkage assembly is provided between the bottom support arm and the left and right holding arms for linking the left and right holding arms to horizontally move inward or outward so as to clamp or release a mobile phone.

Abstract: Embodiments of the present disclosure provide an information processing method and an electronic device. The method comprises: modulating a first audio signal associated with a first channel in a first sound source file onto a first ultrasound signal to obtain a first modulated ultrasound signal; modulating a second audio signal associated with a second channel in a second sound source file onto a second ultrasound signal to obtain a second modulated ultrasound signal; transmitting a first ultrasound wave associated with the first modulated ultrasound signal, such that the first ultrasound wave, once reflected by a first reflection plane, produces a first audible sound signal corresponding to the first audio signal; and transmitting a second ultrasound wave associated with the second modulated ultrasound signal, such that the second ultrasound wave, once reflected by a second reflection plane, produces a second audible sound signal corresponding to the second audio signal.

Abstract: A multi-functional support pole and a rotation telescopic control structure thereof are provided. The multi-functional support pole includes a base, a first rigid tube, a second rigid tube, a third rigid tube, a rotation telescopic control assembly, a vertical rotation folding control assembly, and an apparatus mounting portion to realize the functions of a 360-degree horizontal rotation, an up-down extension, a vertical rotation angle adjustment, and so on. The size of the support pole is reduced after folding. The whole support pole is mainly composed of rigid tubes to improve the structural strength of the support pole and the stability of use.

Abstract: Embodiments of the present disclosure provide an information processing method and an electronic device. The method comprises: modulating a first audio signal associated with a first channel in a first sound source file onto a first ultrasound signal to obtain a first modulated ultrasound signal; modulating a second audio signal associated with a second channel in a second sound source file onto a second ultrasound signal to obtain a second modulated ultrasound signal; transmitting a first ultrasound wave associated with the first modulated ultrasound signal, such that the first ultrasound wave, once reflected by a first reflection plane, produces a first audible sound signal corresponding to the first audio signal; and transmitting a second ultrasound wave associated with the second modulated ultrasound signal, such that the second ultrasound wave, once reflected by a second reflection plane, produces a second audible sound signal corresponding to the second audio signal.