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4K Video Scaler IP Core
The VID_SCALER_4K IP Core is a studio quality video scaler optimized for 4K / UHD video or above. The architecture permits seamless scaling (either up or down) depending on the chosen scale factor and the decimation or interpolation parameters.
Internally, the video scaler is comprised of an input decimation section, a polyphase filter core section and an output interpolation section. In addition, the scaler is capable of processing two RGB pixels per clock and, as such, is able to support 4K+ pixel rates on most mid-range FPGA and SoC devices.
The polyphase filter core uses a 24-bit accumulator and a bank of polyphase FIR filters with 16 phases or interpolation points. All filter coefficients are programmable, allowing the user to define a wide range of filter characteristics if required. By default, the polyphase filter kernel uses a Lanczos2 windowed-sinc function that gives excellent all round performance.
Pixels flow into and out of the video scaler in accordance with a simple valid-ready streaming protocol. The scaler may also be easily adapted to use standard AXI4-stream interfaces which are popular with many vendors of FPGA, SoC and ASIC devices.
Internally, the video scaler is comprised of an input decimation section, a polyphase filter core section and an output interpolation section. In addition, the scaler is capable of processing two RGB pixels per clock and, as such, is able to support 4K+ pixel rates on most mid-range FPGA and SoC devices.
The polyphase filter core uses a 24-bit accumulator and a bank of polyphase FIR filters with 16 phases or interpolation points. All filter coefficients are programmable, allowing the user to define a wide range of filter characteristics if required. By default, the polyphase filter kernel uses a Lanczos2 windowed-sinc function that gives excellent all round performance.
Pixels flow into and out of the video scaler in accordance with a simple valid-ready streaming protocol. The scaler may also be easily adapted to use standard AXI4-stream interfaces which are popular with many vendors of FPGA, SoC and ASIC devices.
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Block Diagram of the 4K Video Scaler IP Core
