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Smart city
Smart City HDMI Interface Board
Core Features
● Superior video interface capability
Supports up to 4 HDMI inputs and 2 HDMI outputs, enabling simultaneous connection and processing of multiple HD video sources to meet the needs of smart city applications such as multi-screen surveillance and information dissemination.
● Flexible real-time video processing
Implemented on FPGA hardware, this system enables seamless video switching, image stitching, OSD subtitle overlay (including time, location, and information), and color space conversion, with extremely low latency and real-time responsiveness.
● Supports high resolution and formats
Supports video processing and output up to 4K@30Hz, and is compatible with multiple resolutions and refresh rates, making it suitable for a wide range of large-screen displays and monitors.
● Industrial-grade reliability design
Utilizing industrial-grade chips and a precision PCB design, it supports 7x24-hour uninterrupted and stable operation, meeting the stringent requirements of critical infrastructure in smart cities.
● Software and hardware are customizable.
FPGA logic can be custom-developed to meet customer requirements, easily adapting to specific protocols, functions, or algorithms and safeguarding customers’ differentiated advantages.
Email: sales@sengkeda.com
Core specification parameters
| Parameter Category | Detailed indicators |
| Main processor | Xilinx XC7A100T-2FGG676I FPGA |
| Logic unit | 101, 440 Logic Cells |
| Block storage | 4,860 Kb Block RAM |
| DSP Slices | 240 DSP48E1 Slices |
| Maximum processing resolution | 3840x2160@30Hz (4K UHD) |
| Video input interface | 4x HDMI 1.4/2.0 Rx (configurable) |
| Video output interface | 2x HDMI 1.4/2.0 Tx |
| System memory | Onboard 1GB DDR3 (32-bit) |
| Configure the memory | Onboard 128Mb SPI Flash |
| Power supply | DC +12V (motherboard), total board power consumption < 10W (typical) |
| Operating temperature | 0°C ~ +70°C (Commercial grade) / -40°C ~ +85°C (Industrial grade optional) |
Interface Information
| Interface Type | Quantity/Specification | Function Description and Smart City Applications |
| HDMI input | 4x HDMI Type-A female connector | Connect to signal sources such as cameras, computers, set-top boxes, and video conferencing terminals. Supports HDCP 1.4/2.2. |
| HDMI output | 2x HDMI Type-A female connector | Output to display devices such as monitors, video walls, and projectors. Supports independent or mirrored output. |
| Control and Data Interface | 1x UART (TTL level) | Receive instructions from the host computer and perform control operations such as mode switching and OSD content updates. |
| 1x 100 Mbps/1 Gbps Ethernet (RJ45) | For remote status monitoring, firmware upgrades, or transmission of network video streams. | |
| Multi-channel GPIO | Used for status indication, external triggering, or controlling peripheral devices. | |
| Expansion interface | 1x PMOD interface | Used to expand sensors, communication modules (such as LoRa, Zigbee), and other components, enhancing IoT capabilities. |
| Debugging interface | 1x JTAG | For FPGA program downloading and debugging. |
| Power interface | 1x DC Jack (5.5x2.1mm) | +12V DC power input. |
Software and Features
- Multi-View: Supports multiple display modes, including 4-split screen, Picture-in-Picture (PIP), and Picture-by-Picture (PBP).
- OSD Overlay (On-Screen Display): Text, images, and timestamps can be overlaid onto video footage in real time via serial port commands.
- Seamless Switching: When switching video sources, there’s no black screen and no flickering—enjoy a smooth experience.
- Auto-Scaling: Automatically detects the resolution of the input signal and scales it to the output resolution.
- Color Enhancement: Supports adjustment of brightness, contrast, and saturation.
Software and Development Support
- Development environment: Xilinx Vivado Design Suite.
- Provide basic IP cores: HDMI input/output control core, DDR3 control core, and video processing (scaling, overlay) IP core.
- Provide reference designs: Offer reference project source code for multi-screen displays to accelerate customer development.
- Technical Support: Provide Board Support Packages (BSPs) and technical documentation to assist customers with secondary development.
Typical application scenarios
- Smart City Command Center: Integrates multiple surveillance video feeds, GIS maps, and data dashboards into a single TV wall for unified output.
- Digital Signage and Information Dissemination: Centrally manage the content displayed on multiple screens in locations such as shopping malls, stations, and hospitals.
- Video conferencing system: Switch between the local computer’s PPT presentation and the remote meeting screen, and overlay meeting information.
- Educational Recording System: Switch between multiple camera angles, including close-ups of the lecturer, students, and PPT slides.
- Security Monitoring Center: Used as a video matrix to switch any input channel to any output channel.
Keywords：Smart City HDMI Interface Board
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Guangzhou SENGKEDA Technology Co., Ltd
Contact: Elaine Huang
Service hotline: +86 20 8792 5274
Email: sales@sengkeda.com
Company Address: Building D, No. 1, Cai Pin Road, Science City, Huangpu District, Guangzhou, Guangdong Province
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