A method for controlling curtain position of a curtain assembly includes a motor and a control unit. The motor includes a detection unit for detecting the working current of the motor. When the curtain moves upward and stops, the detection unit detects the working current increases. The detection unit sends a signal to a processor of the control unit to judge that the curtain reaches the upper-most position. Then the control unit stops the motor and demands the motor to operate reversely a range to lower the curtain slightly. The curtain that is lowered by operating the motor reversely is defined as at a limited position. When the curtain is lowered by the motor, the lower-most position of the curtain is defined by a pre-set number of revolutions of the motor. The pre-set number of revolutions of the motor is set by the control unit.

The present invention relates to a roman shade curtain which can improve the atmosphere of a curtain and the interior design of a home as the curtain is unfolded or folded up in a stepwise manner like lace and, particularly, to a roman shade curtain having viewing parts which enable outdoor viewing and light transmission. The present invention implements a new type roman shade curtain comprising viewing parts formed at intervals and formed of materials such as mesh, and a sub-curtain for opening and closing of the viewing parts, the sub-curtain being able to selectively open and close the viewing parts, such that a user can view the outside or enable outside light to enter through the viewing parts, as necessary.

The present invention relates to a roman shade curtain which can improve the atmosphere of a curtain and the interior design of a home as the curtain is unfolded or folded up in a stepwise manner like lace and, particularly, to a roman shade curtain having viewing parts which enable outdoor viewing and light transmission. The present invention implements a new type roman shade curtain comprising viewing parts formed at intervals and formed of materials such as mesh, and a sub-curtain for opening and closing of the viewing parts, the sub-curtain being able to selectively open and close the viewing parts, such that a user can view the outside or enable outside light to enter through the viewing parts, as necessary.

A cordless retractable shade including an operating system for the shade that varies a biasing force of a spring to counterbalance the shade. The bottom rail of a retractable shade can be raised or lowered, and due to the operating system remains in any selected position of the covering between fully extended and fully retracted, without the use of operating cords. The system includes a method of negating and reversing the spring bias effect at a strategic position whereby the flexible vanes of the shade can be adjusted between open and closed.

A cordless retractable shade including an operating system for the shade that varies a biasing force of a spring to counterbalance the shade. The bottom rail of a retractable shade can be raised or lowered, and due to the operating system remains in any selected position of the covering between fully extended and fully retracted, without the use of operating cords. The system includes a method of negating and reversing the spring bias effect at a strategic position whereby the flexible vanes of the shade can be adjusted between open and closed.

The invention is related to window blind automation and provides a removable device for blind control and automation. The invention is also related to a method for blind control and automation. The device is attached to window blinds headrail with magnets, hooks or other means and the tilter or the cords are put inside the mechanism. The device has a hole where the adaptor is inserted. There are different types of small adaptors for different types of tilters. There is a light sensor for ambient light which might be hidden under semi-transparent plastic or be visible on the enclosure. In the lower part of the drawing the version for vertical blinds is shown. At the side of the verticals there is a metal shaft and the device connects to it with a gear wheel. For verticals, the device is attached to the side of the headrail.

The invention is related to window blind automation and provides a removable device for blind control and automation. The invention is also related to a method for blind control and automation. The device is attached to window blinds headrail with magnets, hooks or other means and the tilter or the cords are put inside the mechanism. The device has a hole where the adaptor is inserted. There are different types of small adaptors for different types of tilters. There is a light sensor for ambient light which might be hidden under semi-transparent plastic or be visible on the enclosure. In the lower part of the drawing the version for vertical blinds is shown. At the side of the verticals there is a metal shaft and the device connects to it with a gear wheel. For verticals, the device is attached to the side of the headrail.

A window covering is provided. The window covering may include a frame mountable within a window return. The frame includes up to four frame members. The four frame members include a first side member having a first light stop, a second side member having a second light stop, a top member having a top light stop, and a bottom member having a bottom light stop. The top member may be coupled between top ends of the first side member and the second side member and the bottom member may be coupled between bottom ends of the first side member and the second side member to form a rectilinear shaped frame. A window covering may be coupled within the frame, wherein the light stops reduce a light gap between the window covering and the frame.

A window covering is provided. The window covering may include a frame mountable within a window return. The frame includes up to four frame members. The four frame members include a first side member having a first light stop, a second side member having a second light stop, a top member having a top light stop, and a bottom member having a bottom light stop. The top member may be coupled between top ends of the first side member and the second side member and the bottom member may be coupled between bottom ends of the first side member and the second side member to form a rectilinear shaped frame. A window covering may be coupled within the frame, wherein the light stops reduce a light gap between the window covering and the frame.

A sun blinds system for light conditions control in a room or space. The space or room with one or more windows may have a set of sun blinds that have a position to cover the whole or part of the window to prevent to an extent, as desired by an occupant or occupants, sunlight from entering the space. Parameters such as space light level, glare, weather conditions, time of year and day, cloud cover, space temperature and occupancy may be entered in a database. A learning supervisor may determine the position of the sun blinds in view of the parameters and previous manual sun blinds' settings by occupants, and provide the position to a sun blinds controller.