Communication between a host device and an accessory using multiple-endpoint identification

摘要

Techniques for facilitating communication between a portable media device (PMD) and an accessory via multiple communication paths. The accessory has a unique accessory identifier that it can send to the PMD upon establishing a connection via each communication path. The PMD can determine whether the same accessory is connected via multiple communication paths based on the accessory identifier received via each communication path. The PMD can route information to the accessory and control routing of information from the accessory based on the set of communication paths that are currently connected and can dynamically change the routing as communication paths are connected and disconnected.

主权项

1. A method for communicating between a host device and one or more accessories, the method comprising:
establishing, by the host device, a first communication path, wherein establishing the first communication path includes receiving, by the host device, a first accessory identifier via the first communication path; establishing, by the host device, a second communication path, wherein establishing the second communication path includes receiving, by the host device, a second accessory identifier via the second communication path; determining, by the host device, whether the first accessory identifier and the second accessory identifier are the same; in the event that the first accessory identifier and the second accessory identifier are the same, determining, by the host device, that the same accessory is connected via both the first communication path and the second communication path; and in the event that the first accessory identifier and the second accessory identifier are not the same, determining, by the host device, that a first accessory is connected via the first communication path and a different accessory is connected via the second communication path.