Complete FPGA Projection Correction Solution

BergLogic provides an FPGA projection-correction solution for high-end projectors, laser TVs, simulators and immersive displays. Real-time 4K at 120fps requires only one 64-bit DDR4 memory group. The reconfigurable architecture combines multiple geometry modes with image-quality processing while providing an alternative technology and sourcing path to fixed-function ASICs.

4K@120fpsmaximum real-time performance

45°maximum Keystone range

4 modesgeometry correction types

1×64-bitDDR4 memory group

Complete Functional Block Diagram

Video enters the FPGA through the selected interface. The geometry engine applies Keystone, pincushion, barrel or asymmetric warping, integrates configurable 2×–4× scaling, and selects bilinear or bicubic interpolation according to image-quality and resource targets. One 64-bit DDR4 memory group supports frame access. Image filtering repairs jagged warp edges and smooths internal regions; warp post-processing handles crop and output-region control. Output timing then generates the target resolution, refresh rate and synchronization, while configuration management supports runtime updates.

BergLogic FPGA projection correction block diagram showing video input, geometry correction, image filtering, warp post-processing, output timing, configuration management and one 64-bit DDR4 group supporting 4K@120fps — Complete FPGA projection correction and image-quality path using one 64-bit DDR4 group at 4K@120fps

Technical Specifications

Feature	Specification
Video interfaces	V-by-One, HDMI, LVDS and others, with project-specific input/output combinations
Performance	Real-time projection geometry correction up to 4K@120fps
Correction modes	Keystone, pincushion, barrel and asymmetric warping
Keystone range	Up to 45° with arbitrary four-point perspective transform
Geometry scaling	Configurable 2×–4× scaling integrated in the correction engine
Warp post-processing	Image crop and output-region control
Output timing	Target resolution, refresh rate and synchronization generation
External memory	Only one 64-bit DDR4 memory group for 4K at 120fps
Interpolation	Bilinear / bicubic, configurable for quality and resources
Image filtering	Repairs jagged warp edges and smooths internal image regions
Configuration management	Unified runtime control of warp, filter, crop, scale and output parameters

Maximum frame rate and supported resolution depend on pixel format, color depth, video-interface configuration and FPGA speed grade. Final specifications are project-specific.

Core Advantages

Lower external-memory demand: Real-time 4K at 120fps projection correction uses only one 64-bit DDR4 memory group, reducing memory devices, PCB routing, power and BOM pressure.
A more resilient sourcing path: The FPGA implementation offers an alternative to fixed-function ASIC architectures, supporting a diversified solution strategy and reducing dependence on one technology or supply source.
Broader image-quality enhancement: Compared with a fixed-function ASIC pipeline, the reconfigurable FPGA can integrate interpolation, edge anti-aliasing, internal smoothing, crop and output control, with room for project-specific expansion.
One geometry engine supports Keystone, pincushion, barrel and asymmetric warping for varied projector installations.
V-by-One, HDMI, LVDS and other video I/O combine with configuration management for automatic correction or sensor-calibration systems.

Integration and Delivery

BergLogic can deliver projection geometry correction IP, image filtering and post-processing, configuration management, output timing generation, multiple video-interface integrations, a 64-bit DDR4 architecture, FPGA reference design and production-oriented optimization.

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