Cipher Modulation for Optical Camera Communication with Digital Signage

Optical Camera Communication (OCC) is visible light communication between an LED and a camera. OCC has attracted considerable attention as a license-free and low-cost wireless communication. A practical scenario for mobile OCC is to obtain information by scanning the digital signage with users' smartphones. However, to the best of our knowledge, there are no modulation schemes for embedding optical signals in human-perceivable content. Therefore, in this paper we propose a modulation scheme called Signage Cipher Modulation (SCM) for OCC. The aim of the SCM is to embed optical signals in a human-visible video content in digital signage. It integrates data communication with advertising and cinematic content. We have formulated the performance limit of the SCM, and then confirmed its performance with experimental results.