| 摘要 |
Provided is a system and corresponding methods for a network of indoor modular signs. The indoor signs are composed of various modules which are combined to make the signs fully contained and operable. The modules include paper and e-paper based displays and frames as well as power line communication devices. The invention includes: a network of modular signs within an indoor area, a computing station with prerecorded data, and said data is presented as scheduled on the electronic paper-like display modules and power line communication networks that provide both power and data to the displays.
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