In-flight entertainment systems controlling Bluetooth broadcast rates of time messages and timing offsets by video display units to user terminals
US10362347B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2018 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Jun 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An inflight entertainment system includes video display units that communicate with user terminals through Bluetooth signaling and include a network interface communicating with a content server and a satellite network interface and/or a ground network interface. A time reference message is received which contains a master time reference from the satellite network interface and/or the ground network interface. A local time generator is updated based on the master time reference. Rate request messages are received from the user terminals containing indications of time broadcast rates requested by the user terminals. A scheduled time broadcast rate is determined based on the indications of the time broadcast rates requested by the user terminals. The video display unit transmits, through a Bluetooth transceiver at time instances which are determined based on the scheduled time broadcast rate, broadcast time messages that each contain an indication of a present local time of the video display unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.