Abstract: An operation training system for ultrasound includes a sensing device, a data processing device and a display device. The sensing device is configured to sense a hand movement signal and a voice signal. The data processing device is configured to analyze the hand movement signal, control the virtual hand to move the virtual probe in the virtual scene and perform virtual ultrasound detection, and generate an answer content corresponding to the voice signal based on the question-and-answer model. The display device is configured to display the virtual scene and play the answer content.

Abstract: Present invention teaches to build a Roman shade window curtain with enhanced child safety features built into the space between a front shade and a rear shade, where the “free play” of a lift cord is limited due to the “V” hole shape of a V-lock component and the outward pulling is also limited with the use of a safety connector generally place in between the mid vertical point of two rib pieces.

Abstract: Present invention teaches to build a Roman shade window curtain where a roller shade is used in the back side of said window curtain, to provide for the release/retraction control, resulting in a “cord-less” control for the actuation of a Roman shade, which hangs down from a special head rail on top, with the roller shade fabrics slideably travel down the gaps between each horizontal fold created by the rib, clip and rib rod.

Abstract: Present invention teaches to make a Roman shade window curtain where a sliding locking mechanism is provided at the bottom beam of the rolling spool at the back side of the Roman shade, where the engaging positions between the rolling spool bottom beam and the pair of auxiliary rods can be set according to user preference, by sliding the locking tubes towards the middle to move the engaging point up and down, and by sliding the licking tubes to the left and right extremities for engaging the bottom to the desired fold line on the Roman shade.

Abstract: Present invention teaches to make a Roman shade window curtain where a sliding locking mechanism is provided at the bottom beam of the rolling spool at the back side of the Roman shade, where the engaging positions between the rolling spool bottom beam and the pair of auxiliary rods can be set according to user preference, by sliding the locking tubes towards the middle to move the engaging point up and down, and by sliding the licking tubes to the left and right extremities for engaging the bottom to the desired fold line on the Roman shade.

Abstract: Present invention teaches to build a Roman shade window curtain where a roller shade is used in the back side of said window curtain, to provide for the release/retraction control, resulting in a “cord-less” control for the actuation of a. Roman shade, which hangs down from a special head rail on top, with the roller shade fabrics slideably travel down the gaps between each horizontal fold created by the rib, clip and rib rod.

Abstract: A type of fabric window shades that produce desirable wavy pattern, even at the state of full deployment, is disclosed and claimed herein. Horizontal junctions of two layers, with back layers shortened in each fold, produce desired wavy pattern comparable to that of Roman shades, at the shades' naturally deployed state, even without pulling up/down the window shade.