公开(公告)号：US09942576B2

公开(公告)日：2018-04-10

申请号：US14862016

申请日：2015-09-22

Applicant: Apple Inc.

Inventor： Andrew Belk ,  Alessio Centazzo ,  Daniel R. Fletcher ,  William M. Bumgarner

IPC: H04M1/00 ,  H04N21/00 ,  H04N21/41 ,  H04N21/436 ,  H04N21/443

CPC classification number: H04N21/00 ,  H04N21/4126 ,  H04N21/43615 ,  H04N21/4436

Abstract: There is a need to provide an intuitive way for a battery-powered device to send a low battery notification to another device that can properly notify a user that the battery-powered device has a low battery. The user can be notified by the other device even after the battery-powered device has exhausted its battery to the point where it can no longer report its battery state. A second electronic device (e.g., a remote control) can send a low battery notification to a first electronic device (e.g., a set-top box) so that the first electronic device can alert a user that the second electronic device has a low battery.