Patent ID: 11930231
Assignee: JCDECAUX SA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. An advertisement digital display system comprising at least one server and multiple digital display devices, wherein:
said at least one server is adapted to generating playlists based on advertisement display campaigns, each playlist being intended to be read by one or more of said digital display devices, each playlist comprising at least one series of identifiers of digital content items to be read sequentially over one or more predetermined time periods, but not comprising loading addresses of digital content items or digital fingerprints of digital content items, each digital display device corresponding to one specific playlist generated by said at least one server;
said at least one server is adapted to generating repetitively, for each digital display device, a respective download manifest comprising at least respective loading addresses of digital content items, said download manifests being larger files than said playlists and being generated less frequently than said playlists by said at least one server;
the digital display devices are adapted to updating their playlists and download manifests, this updating comprising:, c1) polling said at least one server, at predetermined intervals, by each digital display device, in order to determine whether said at least one server has a new playlist corresponding to said digital display device and to determine whether said at least one server has a new download manifest corresponding to said digital display device;, c2) if it is determined that said at least one server has a new playlist for said digital display device, then loading said new playlist on the digital display device; if it is determined that said at least one server has a new download manifest for said digital display device, then loading said new download manifest on the digital display device;, c3) if a new download manifest has been loaded from the server, determining, by said digital display device, what new digital content item(s) are referenced in said new download manifest;, c4) and downloading, by said digital display device, said new digital content item(s) from the corresponding respective address(es) indicated in the new download manifest, and storing said new digital content item(s) on said digital display device;
each digital display device is adapted to reading the digital content items previously downloaded and corresponding to a playlist in effect for this digital display device and for displaying these digital content items on a digital screen belonging to said digital display device.