Abstract: An integrated detection test device for a drill bit and a rotary blowout preventer and a detection method thereof are provided. The test device includes a support frame, a rotary shaft is mounted on the support frame, and an upper end of the rotary shaft is connected to a piston rod of a first hydraulic cylinder fixed on the support frame; and the rotary shaft is connected to a driving device through a rotary disc sleeved outside the rotary shaft. A pit sinking to a fixing plane of the support frame is arranged below the support frame; and an L-shaped track and a transport vehicle slidably connected to the track are mounted in the pit and used to transport the rotary blowout preventer or the drill bit test bench to a test position.

Abstract: A multifunctional rotary blowout preventer test device and a method thereof are provided. The device includes a test box body and a rotary blowout preventer body, a base is fixedly connected inside the test box body with screws, and two first receiving blocks are fixedly connected to a top of the base with screws. Through the arrangement of the structures such as a motor and an output shaft, the motor is started, the output shaft is driven to rotate, a rotating rod is driven to rotate, a forward-rotating screw rod and a reverse-rotating screw rod are driven to rotate, a right-moving sliding block and a left-moving sliding block are driven to move.

Abstract: A robotic lawnmower comprising a robotic body and a trimmer mechanism. A mount column hole is arranged in a side face of the robotic body. The trimmer mechanism includes a mount, a trimmer head and a drive motor. The mount includes a stand and a connection portion. The connection portion is fixedly connected to the stand and configured to be inserted into the mount hole. The trimmer head is rotatably arranged on a bottom face of the stand. The drive motor is configured to drive the trimmer head to rotate. The robotic lawnmower with the trimmer mechanism is capable of covering and trimming the areas within a specific width distant from the edges of the lawns, which effectively solves the problem that the conventional robotic lawnmowers are incapable of covering and trimming such areas of the lawns, reduces manual workload, and lowers cost of manpower.

Abstract: A method and system for playing background music and key tone based on an embedded browser, and a digital television receiving terminal. The method comprises: analyzing and downloading web data, intercepting protocol registration events, and sending a background music start command when the background music need to be played; analyzing transport stream (TS) data pushed by a server, obtaining data required for playing the background music, and playing the background music; and receiving a key operation command from a user, analyzing the TS data pushed by the server when playing the background music, obtaining data required for playing key tone, and playing the key tone instructed in the key operation command. With the preceding method, system and digital television receiving terminal, defects in concurrently playing multi-channel audio data are overcome and the background music and key tone can be played concurrently.

Abstract: A method and system for playing background music and key tone based on an embedded browser, and a digital television receiving terminal. The method comprises: analyzing and downloading web data, intercepting protocol registration events, and sending a background music start command when the background music need to be played; analyzing transport stream (TS) data pushed by a server, obtaining data required for playing the background music, and playing the background music; and receiving a key operation command from a user, analyzing the TS data pushed by the server when playing the background music, obtaining data required for playing key tone, and playing the key tone instructed in in the key operation command. With the preceding method, system and digital television receiving terminal, defects in concurrently playing multi-channel audio data are overcome and the background music and key tone can be played concurrently.

Abstract: A system and method is provided for downloading and uploading resource files, image files, and/or other files to and from a mobile phone using AT commands. An extended set of AT commands is defined for managing these files. The extended set of AT commands may then be used to directly download and upload files, or may be embodied in a software program for downloading and uploading files. The extended set of AT commands may also be used to manage and modify the resource files, image files, and other files, and to download, manage, and modify directories in the mobile phone.