92results about How to "Data is valid" patented technology

A semiconductor device for providing a reliable data valid window includes a drive control unit configured to output a driving power control signal in response to an internal clock and a command signal; a sub-drive voltage supply unit configured to supply sub-drive voltages; a main drive unit configured to generate a delay-locked loop (DLL) clock by driving the internal clock with a main drive voltage; a sub-drive unit configured to drive the internal clock with the sub-drive voltage in response to the driving power control signal; and a data output driver configured to drive and output a data signal in sync with the DLL clock, wherein the main drive unit and the sub-drive unit share their output terminal.

The invention discloses a tilt rotor test device, which comprises a rack, a universal hinge structure, a rotor measurement structure and a tilt driving structure, and is characterized in that the universal hinge structure comprises a first rotating shaft and a second rotating shaft which are perpendicular to each other, the first rotating shaft is mounted on the rack, and the rotor measurement structure is mounted on the second rotating shaft; the driving end of the tilting driving structure can drive the rotor measuring structure to rotate around the first rotating shaft, and the supporting end of the tilting driving structure can move in the direction parallel to the first rotating shaft; the rotor measuring structure is installed on one rotating shaft of the universal hinge structure, multi-degree-of-freedom rotation of the rotor measuring structure is achieved, tilting of the rotor measuring structure can be controlled under the driving effect of the tilting driving structure, the tilting working process of a rotor can be simulated, and the test accuracy is improved. And different side inclination directions of the rotor wing are realized by virtue of movement of the supporting end of the tilting driving structure, so that a working condition which is closer to the actual condition is simulated, and more effective data are obtained.

The invention discloses an advanced three-dimensional electrical resistivity cross-hole computed tomography (CT) solitary stone detection system carried by a shield tunneling machine and a detection method. The system comprises an advanced drilling device capable of drilling at least four drill holes in the rock surface. The multiple drill holes form a three-dimensional detection space. The advanced drilling device comprises a drilling machine. The bottom of the drilling machine is movably fixed to a rail on the inner circumference of a shield. A drill bit of the drilling machine penetrates through an advanced grouting hole of the shield. The system further comprises a detection electrode coupling device which stretches into the drill holes, is provided with a plurality of electrodes, and is capable of releasing electrolytes to the electrodes. The detection electrode coupling device is connected with a host machine used for applying a three-dimensional space electric field through a cable. The advanced three-dimensional electrical resistivity cross-hole CT solitary stone detection system carried by the shield tunneling machine and the detection method have the beneficial effects that the defects that holes cannot be drilled in a cutter head of the shield tunneling machine, or a drilling device cannot be installed on a tunnel face are effectively overcome; the advanced drilling device is installed in the shield of the shield tunneling machine, and advanced drilling is achieved through the advanced grouting hole in the shield of the shield tunneling machine; and difficulty in the prior art is overcome, and simplicity and convenience are achieved.