Method of cutting window covering

A method of cutting a window covering, comprising:

• providing a window covering cutting apparatus comprising an input device, a position detecting device, a cutting device, a manual operating member, a limit assembly and a signal processing circuit;
• utilizing the input device to receive a mounting mode, cutting size information and identification information of the window covering to be cut;
• utilizing the position detecting device to detect a position of the limit assembly and generate a position detecting value corresponding to the position of the limit assembly;
• utilizing the signal processing circuit to generate adjusted position information and target position information according to the mounting mode, the cutting size information, the identification information and the position detecting value;
• manually adjusting the manual operating member to move the limit assembly until the adjusted position information substantially equals to the target position information;
• and
• making at least a first end of the window covering abut against the limit assembly, and utilizing the signal processing circuit to configure the cutting device to cut the first end of the window covering;
• wherein the limit assembly comprises a blocking member and a moving member which are connected in a concurrently movable manner, and the blocking member is provided to be abutted against by the first end of the window covering;
• when the limit assembly is driven by the manual operating member to move, the moving distance of the moving member is in a constant proportional relationship with the moving distance of the blocking member;
• wherein the limit assembly further comprises a backward position detector electrically coupled to the moving member;
• when the cutting device starts cutting and performs a feed movement from a starting point, the backward position detector is triggered by the cutting device to generate an activating signal to the moving member, and the moving member brings the blocking member to move from a localization position to a backward position, in which the blocking member in the backward position is spaced from the first end of the window covering by a predetermined distance;
• after the cutting device has finished cutting and in response to a returning movement of the cutting device to the starting point, the backward position detector is triggered again by the cutting device to generate a resetting signal to the moving member, and the moving member brings the blocking member to move from the backward position back to the localization position.