Abstract: a resistance adjustable power generator having: an operating unit that receives commands of a user and is able to switch the resistance adjustable power generator to either a release mode or a resistance mode; a resistance generating unit that receive the commands from the operating unit and provides adjustable multiple levels of resistance to a connecting device, with the resistance generating unit having a resistance controlling center, multiple resistance generator, and an output controlling center; and a battery electrically connects to the resistance generating unit.

Abstract: This invention reveals an electric bicycle system including an electric bicycle and a docking device. When the electric bicycle is uprightly prop against the docking device, the electric bicycle can be driven with a pedal, making the electric bicycle system a training equipment.

Abstract: The present invention provides a method for updating and displaying information, which comprises a matrix program that operates as a program to analyze a data list and to form a table separately by setting a plurality of keywords, then produce an alive matrix map after the analysis result is matched and the table is created; therefore, the alive matrix map can add new data lists without repeating the tedious setting steps.

Abstract: A bicycle anti-stripping chainring has a body, multiple wide teeth, and multiple narrow teeth. The wide teeth and the narrow teeth are alternately formed on and protrude from an outer periphery of the body at spaced intervals. Each wide tooth has a width wider than a wide of each narrow tooth. At least one of the wide teeth has two side faces inclined in a same direction and staggered a tangential direction of the body. With the arrangement of the wide teeth and the narrow teeth of the present invention, a chain can engage with the different widths of the wide teeth and the narrow teeth tightly, and this can provide a anti-stripping effect to the chain when a bicycle is in use.

Abstract: A contactless generator includes a generating module and a magnetic module. The generating module includes an energy converter and a rotator. The rotator has a surface and mechanical energy when rotating and is rotatable relative to the energy converter. The magnetic module is mounted on the surface of the rotator, aligned with the energy converter, and produces a intrinsic magnetic field. The intrinsic magnetic field is subjected to a contactless active force from an external contactless moving metallic object and drives the rotator to rotate. The energy converter converts mechanical energy of the rotator when rotating into electricity by a converting means.