Data communications via limited length audio jack

Abstract

Methods, systems, and apparatus for selectively communicating data and audio over a limited-size audio plug. A host device determines whether an audio accessory or a data communicating accessory is plugged therein via a signal, or lack thereof, communicated to the host device via the audio plug of the accessory. The host device then either communicates audio or data over the audio plug contacts that are typically used only for audio communication based on whether its connected to an audio accessory or data communicating accessory. An audio plug may also include a split-ring contact where multiple, independent contacts are formed in place of a single tip, ring, or sleeve contact. The split-ring contact may be used for communicating audio and/or data.

1 .- 30 . (canceled) 
     
     
         31 . An electronic device comprising:
 a plug connector including a base and an insertion element, the insertion element being coupled to and extending linearly from the base, the insertion element including a plurality of plug contacts arranged linearly between the base and a tip of the insertion element, the plurality of plug contacts including: a tip contact arranged at the tip of the insertion element, and a ring contact arranged between the tip contact and the base; and   communication circuitry coupled to the plug connector and operable to:   establish data communication over the tip contact and the ring contact.