Abstract: A portable electronic device may identify an accessory device coupled thereto and its corresponding functionality utilizing a single channel utilized to provide power to the accessory device. Upon establishing a connection between the portable electronic device and the accessory device, the accessory device may transmit a message to the portable electronic device. The message may be decoded in order to identify the specific accessory device connected to the portable electronic device. Subsequently, the portable electronic device may alter its behavior to suit an application or function of the accessory device, thus leading to a more positive user experience.

Abstract: An electronic device case comprises a housing having a pivotable light arm and a receptacle. The light arm may be displaced between a stowed position and a use position. When in the use position, the light arm reduces the amount of glare light and increases the uniformity of light distribution to effectively illuminate the display of the electronic device. The receptacle comprises a lip over-molded to a base. The lip may be formed of a material that is more flexible than a material forming the base.

Abstract: A receptacle may include a locking mechanism for retaining a plug in a mated condition. For example, the locking mechanism may engage with a hole formed in at least one prong of the plug. The locking mechanism may include at least one locking pin that moves to a retracted position during insertion of the plug into the receptacle, and that moves to an engaged position when the hole in the prong aligns with the locking pin. In some implementations, an electrical connection is not formed until the locking pin at least begins to engage with the hole in the prong. In some instances, an electrical contact may move into electrical connection with the prong as the locking pin engages with the hole in the prong. Furthermore, in some implementations, the receptacle may be included in a plug adapter for securely mating a plug with the plug adapter.

Abstract: An apparatus for movably joining structures is disclosed. In one embodiment of the invention, the apparatus provides at least one rotational degree of freedom of movement, while providing electrical coupling. In another embodiment of the invention, the apparatus provides at least two rotational degrees of freedom of movement.