RECD: A Platform of Automated Encrypted Certificate Distribution in Cinema LED Screen

With the widespread adoption of Light Emitting Diode (LED) display technology and its significant share increase in global market, LED display technology is also stepping into the cinema display area by improving display quality in theater. To enhance its share in the cinema display equipment market, research related to cinema LED screen is becoming increasingly important. Before the emergence of cinema LED screen, the primary equipment is laser projectors with Digital Light Processing (DLP) display technology produced by Texas Instruments Incorporated. While DLP display is limited to 4K resolution for Digital Micromirror Device (DMD) chip's restriction, Cinema LED screens have broken the limitation to lead the display technology. Now Digital Cinema Initiatives LLC (DCI), the standard setting organization, has developed a separate measurement standard specifically for cinema LED screens, which highlights its primality. However, the high cost of cinema LED screens compared to traditional laser projectors remains a challenge. To address this, many manufacturers provide box-office sharing or installment cases, however, raising concerns about safeguarding the rights of both equipment manufacturers and cinema operators, particularly regarding payment collection in above scenarios. In response, this paper proposes a Real-time Encrypted Certificate Distribution (RECD) platform for manufacturers using technologies such as Raspberry Pi, .NET Core, RabbitMQ, OpenSSL and Elastic Compute Service (ECS). This platform manages the validity of encrypted certificates for cinema LED screens, automates certificate distribution to ensure cinema operations, and allows halting certificate issuance in case of payment difficulties. Our platform reduces management costs and protects the rights of equipment manufacturers, facilitating the promotion of LED cinema screens in the market.