Stylus charging case

摘要

Embodiments of the present invention relate to a portable charging case that can serve as both a charging base and a protective carrying case for a rechargeable stylus. The portable charging case can enable a quick connect and release of the stylus using magnetic force for magnetic engagement of the stylus to the charging base. The charging base may include a logic board that dynamically changes the polarity of the charge coming in through the charging base charging contacts. Such a dynamic change of polarity can recharge the stylus irrespective of the polarity alignment between the stylus charging terminals and the charging base charging contacts.

主权项

1. A charging case for a rechargeable stylus comprising:
a charger body portion having a first and second end and including,
a receptacle disposed at the first end and presenting a receiving face adapted to interface with a charging block of a stylus for magnetic association therewith, the stylus charging block being disposed at a first end of the stylus and presenting a plurality of ferromagnetic charging terminals;a magnetic element fixed adjacent the receptacle opposite the receiving face and configured to magnetically secure the charger body portion relative to the charging block of the stylus;circuitry coupled to a communications bus and operable to carry electrical signals therefrom;a plurality of charging contacts in electrical communication with the circuitry and configured to associate with the plurality of ferromagnetic charging terminals, with each charging contact extending into the receptacle and operably contacting a respective charging terminal upon association of the charger body portion with the charging block of the stylus; a plurality of LEDs being electrically connected to the circuitry and circumferentially disposed inside the charger body portion, the plurality of LEDs operable to simultaneously emit light for indicating a charge status of the stylus; and a light diffusing ring radially interposed between the plurality of LEDs and exterior of the charger body portion, the light diffusing ring adapted to provide an illusion of a single light source when light is emitted from the plurality of LEDs.