Abstract: An earphone assembly includes a casing, at least one secondary cable, at least one earphone, and at least one reel mechanism. The casing includes an assembly chamber. The earphone electrically connects to the casing by the secondary wire. The reel mechanism is received in the assembly chamber, and controls a length of the secondary cable extending from the assembly chamber. A portable electronic device using the earphone assembly is also provided.

Abstract: A system and method for signing an electronic document obtains a signing tag and document content from a data base to generate an extensible markup language (XML) file of the electronic document. The system and method further converts the XML file to an extensible stylesheet language formatting objects (XSL-FO) file, and converts the XSL-FO file to a portable document format (PDF) file. Furthermore, the method obtains a signing position of the PDF file according to the signing tag and inserts an electronic signature into the PDF file according to the signing position.

Abstract: The present invention relates to a storing structure of a wireless mouse for storing a wireless signal receiver therein. The storing structure of the wireless mouse includes a cover member, a carrier and a carrier door. The cover member includes a receiving portion therein. The carrier is disposed in the receiving portion and movable to be protruded from the cover member. The carrier door is pivotally coupled to the carrier.

Abstract: An air purifier includes an outer casing and an ionizer module. The outer casing has a top portion, a bottom portion having an electrode opening, an air purifying cavity defining between the top and bottom portion, and a peripheral opening communicating with the air purifying cavity. The ionizer module includes a power unit and an ionizing electrode unit. The ionizing electrode unit is detachably slid into the air purifying cavity through the electrode opening of the bottom portion of the outer casing, wherein the ionizing electrode unit has a top terminal end arranged to electrically contact with the power unit to ionize the ambient air for emitting ozone thereto when the ambient air is circulated through the peripheral opening along the ionizing electrode unit.