Abstract: The present application discloses a method, an apparatus, a system, and a storage medium for calibrating an exterior parameter of an on-board camera, relating to the field of autonomous driving technologies. A specific implementation scheme of the method in the application is: preprocessing two frames of images of a former frame and a latter frame collected by the on-board camera; performing feature point matching on the two preprocessed frames of images to obtain matched feature points; determining a moving posture of the on-board camera according to the matched feature points; determining a conversion relationship between a vehicle coordinate system and an on-board camera coordinate system according to the moving posture, and obtaining the external parameter of the on-board camera relative to a vehicle body.

Abstract: A shift register unit includes a shift circuit having first, second, and third power supply signal terminals respectively coupled to first, second, and third power supply lines configured respectively to transmit first, second, and third power supply signals; and configured to respond to the first or second power supply signal and output the signal from a first node to an output terminal; a signal generating circuit respectively coupled to the first and second power supply lines and the first node, and configured to output the second power supply signal to the first node when an electric potential of the first power supply signal is an effective potential, and output the first power supply signal to the first node when the electric potential of the second power supply signal is an effective potential, wherein the electric potentials of the first and second power supply signals are complementary to each other.

Abstract: A self-service parcel cabinet, comprising: a main-body part (1), a sorting apparatus (2), a parking apparatus (3), and a control device. The main-body part is a hollow structure opened at the top. At least part of the hollow structure is formed by multiple self-service parcel lockers (11) surroundingly arranged. The parking apparatus is provided on top of the main-body part and comprises a drone landing pad (31). Provided on the drone landing pad is a channel allowing passing of a parcel delivered by the drone and directly facing the opening at the top.

Abstract: A message processing request is received from a channel partner device, where the message processing request includes a ciphertext message encrypted in a trusted execution environment (TEE) of a service provider device based on a service processing request that includes a plaintext message of the ciphertext message, and where the service processing request requests at least a portion of the plaintext message to be sent to a target user. A first smart contract deployed in a blockchain of the blockchain network is invoked using a TEE of a blockchain node of a blockchain network. The ciphertext message is decrypted based on the first smart contract to obtain the plaintext message. The plaintext message is sent to an operator device to forward the at least a portion of the plaintext message to the target user.

Abstract: A liquid crystal display panel and a manufacturing method of same are provided. The liquid crystal display panel comprises: a first substrate; a second substrate disposed opposite to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a sealant bonding the first substrate with the second substrate and sealing the liquid crystal layer; and a light-shielding layer, wherein the light-shielding layer is located on a side of the second substrate away from the first substrate. The liquid crystal display panel comprises a display area and a non-display area, the light-shielding layer comprises a first part and a second part, the first part is located in the non-display area, and the second part is located in the display area.

Abstract: A cleaning method of a cleaning robot, a chip, and a cleaning robot. The cleaning method of the cleaning robot includes: moving forward and along a first lateral direction to form a first cleaning path; moving backward to form a second cleaning path; moving forward and along a second lateral direction to form a third cleaning path, where the second lateral direction is opposite to the first lateral direction; and repeatedly performing the first cleaning path, the second cleaning path, and the third cleaning path in turn. The cleaning method of the cleaning robot improves the cleaning effect by repeatedly performing a three-segment series of paths.

Abstract: A method for manufacturing a display substrate, a display substrate and a display device are provided. The method for manufacturing a display substrate includes: forming, on a base substrate, a concave-convex structure extending in a direction identical to an extending direction of a signal transmission line; and forming the signal transmission line on the concave-convex structure.

Abstract: The present invention provides a draw device. The draw device includes a draw head, a draw opening, a draw tube, at least one pressure hole, and at least one flow guiding channel. The at least one flow guiding channel is respectively arranged corresponding to the at least one pressure hole. Each flow guiding channel communicates with the corresponding pressure hole to take out a drawn liquid inside the pressure hole.

Abstract: A digital microfluidic device includes a thin film transistor driving substrate. The thin film transistor driving substrate includes a first base substrate; a plurality of sample actuating units; a plurality of sample position detecting units; a dielectric insulating layer on a side of the plurality of sample actuating units and the plurality of sample position detecting units distal to the first base substrate; and a first hydrophobic layer on a side of the dielectric insulating layer distal to the first base substrate. Each of the plurality of sample actuating units includes a first electrode configured to drive transportation of a liquid droplet on the digital microfluidic device. Each of the plurality of sample position detecting units includes a photosensor configured to detect presence or absence of the liquid droplet on a position corresponding to the photosensor.

Abstract: A light-emitting device and a manufacturing method thereof are provided. The light-emitting device includes an anode, a luminous layer, and a cathode, which are disposed in a stacked manner, and a material of the luminous layer includes a perovskite material. A first transport layer is further provided between the luminous layer and the anode, and the first transport layer is configured to transport holes. Alternatively, a second transport layer is further provided between the cathode and the luminous layer, and the second transport layer is configured to transport electrons.

Abstract: A hand-up initiating and responding method and interactive system in a multi-party video activity are disclosed. The hand-up initiating method in a multi-party video activity includes: step 1) pressing a hand-up button, sending a hand-up message, and updating a hand-up status in a local video window and hand-up statuses in a local roster; step 2) releasing the hand-up button, and starting countdown; step 3) sending a hand-up cancellation message and updating the hand-up status in the local video window and the hand-up statuses in the local roster at the end of the countdown; and step 4) if the hand-up button is pressed again within the countdown time, skipping to step 2) without sending a hand-up message. The present invention provides a special interactive mode, in which when a participant raises a question, an initiator can perceive in real time and respond in time.

Abstract: A cryptographic acceleration card included in a blockchain integrated station sends negotiation information to a provider of a new disk image, where the negotiation information is used by the provider to determine a deployment key, and where the new disk image is used to update an old disk image included in the blockchain integrated station. The cryptographic acceleration card receives a new hash value encrypted by the provider using the deployment key, where the new hash value corresponds to the new disk image. The cryptographic acceleration card replaces an old hash value corresponding to the old disk image with the new hash value, where the new hash value is compared with a current hash value of a disk image included in the blockchain integrated station to determine whether the disk image matches the new disk image.

Abstract: Examples in this application disclose data check computer-implemented methods, media, and systems. One example computer-implemented method includes retrieving, by a trusted execution environment (TEE), a check-triggering instruction from a server, where the check-triggering instruction is configured to trigger the TEE to perform a consistency check on basic data of a user to be identified, in response to the check-triggering instruction, retrieving, by the TEE, encrypted standard basic data of the user from a trusted institution, retrieving, by the TEE, encrypted basic data of the user from a first institution, retrieving, by the TEE, the basic data of the user by decrypting the encrypted basic data, performing, by the TEE, the consistency check on the basic data of the user based on the encrypted standard basic data to obtain a check result, and sending, from the TEE, the check result to a second institution.

Abstract: The present invention provides a thin film transistor and a manufacturing method thereof. The thin film transistor includes a substrate, a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode and a drain electrode, and a passivation layer. Both structures of the source electrode and the drain electrode are a three-layered metal structure, and the three-layered metal structure is a titanium tantalum/copper/titanium tantalum structure. Therefore, after the passivation layer is applied to the source electrode and the drain electrode, a bulging problem of the passivation layer can be effectively improved, and thus the thin film transistor has better plasticity and can be used for flexible displays.

Abstract: The present disclosure provides an organic light emitting diode (OLED) display device, including a support member, a central frame disposed on the display support member. A left frame slidably connected to the central frame. A right frame slidably connected to the central frame. The OLED display is rolled up or stretched by sliding the left frame and the right frame. Therefore, space of large display is reduced, and convenience of carrying is enhanced.

Abstract: A method for decoding an encoded code stream is provided. The method may include obtaining the encoded code stream. The method may include determining a plurality of code blocks based on the encoded code stream. The method may include determining a plurality of bit-planes for each of the plurality of code blocks, the plurality of bit-planes ranging from a most significant bit-plane to a least significant bit-plane. The method may include determining at least one query-plane for each of the plurality of bit-planes. The method may further include decoding each of the plurality of bit-planes based on the at least one query-plane.

Abstract: A system for controlling a rotation of an object on a touch screen includes a touch screen interface, a single touch setting module for detecting a single touch action, a single touch driving module for receiving information from the single touch setting module and activating a rotating action on the object, and an image processing module including an object rotating module which rotates the object and an object scaling module which scales the object size to fit with the touch screen interface. A method for controlling a rotation of an object on a touch screen interface includes executing single touch, activating a rotating action, rotating the object, and stopping the rotating action of the object. There is a predetermined time between the activating the rotating action and the executing single touch. When the object executes the rotation action, the object size is scaled to fit with the touch screen interface.

Abstract: A dual band antenna element suitable for use in a compact multiband antenna array is described. The dual band antenna element may have a main radiating direction with a first radiating element for use in a first frequency band, a first electrically closed ring for use in the first frequency band galvanically isolated from and arranged at a predetermined distance from the first radiating element in the main radiating direction. The first ring) may at least partially overlap the first radiating element in the main radiating direction. The dual band antenna element may also have a second radiating element for use in a second frequency band, where the second radiating element is arranged within a circumference of the first radiating element and is arranged substantially at the predetermined distance (D) from the first radiating element in the radiation direction.

Abstract: The present invention discloses a mobile phone holder with an automatic clamping function. The mobile phone holder includes a base and an automatic clamping mechanism. The automatic clamping mechanism includes a clamping arm, a gear, a one-way ratchet, a key spring, a button, and a driving component. The clamping arm is slidably mounted on the base, a clamping space is defined between the clamping arm and the base, the clamping arm is provided with a rack portion, the gear is rotatably mounted in the base, the rack portion is engaged with the gear, the one-way ratchet is mounted above the gear, the one-way ratchet rotates along with the gear, the key spring is elastically clamped between the gear and the one-way ratchet, ratchet teeth are disposed on the upper end of the one-way ratchet, a clamping slot is disposed on the base, the button is mounted above the one-way ratchet.