The CCSDS-122-E encoder IP core from Alma Technologies is a complete and self-contained implementation of the CCSDS 122.0-B-1 image data compression standard.
It offers numerically lossless or Lossy image data compression with up to 16-bit pixel dynamic range.
The encoder accepts the uncompressed image data in standard raster-scan pixel order and outputs standalone and fully compliant CCSDS 122.0-B-1 byte-stream format.
The CCSDS-122-E is designed for enabling high-rate data compression with low silicon resource usage and without needing an external memory device for its operation.
It is available for ASIC or AMD-Xilinx, Efinix, Intel, Lattice and Microsemi FPGA and SoC based designs.
The CCSDS 122.0-B-1 standard fits the compression requirement for a wide range of spaceborne two-dimensional spatial image data.
In these applications the requirement is for a scalable data reduction, with the option to use lossless or lossy compression,
using a memory-efficient and reduced complexity algorithm that results in a fast, low-power and compact hardware implementation.
The Alma Technologies CCSDS-122-E encoder implementation realizes all these expected benefits and supports both lossless and lossy
compression with a pixel dynamic range of up to 16 bits.
The CCSDS 122.0-B-1 standard was developed to balance between compression performance and complexity. Similar to JPEG 2000,
it utilizes a two-dimensional Discrete Wavelet Transform (DWT) for image data decorrelation. CCSDS 122.0-B-1
uses a 9/7 integer DWT for the lossless compression, while a 9/7 float DWT is also specified for improved lossy
compression efficiency, especially at low bit-rates. Both DWT options are available by the CCSDS-122-E core.
For complete control by the application of the lossy compression ratio, the CCSDS-122-E includes also the optional rate control
functionality that is provisioned by the standard. Compared to JPEG 2000, CCSDS 122.0-B-1 achieves similar lossless and lossy compression efficiency.
The CCSDS-122-E is designed with simple, fully controllable and FIFO-like, streaming input and output interfaces. It is a complete and autonomous
encoder, not needing any host system CPU or GPU support for its operation. Being carefully designed and rigorously verified,
the CCSDS-122-E is a reliable and easy-to-use and integrate IP core.
IP Deliverables
Clear text VHDL RTL source for ASIC designs, or pre-synthesized and verified Netlist for FPGA and SoC devices
Release Notes, Design Specification and Integration Manual documents
Bit Accurate Model (BAM) and test vector generation binaries, including sample scripts
Self checking testbench environment, including sample BAM generated test cases
Simulation and sample Synthesis (for ASICs) or Place & Route (for FPGAs) scripts
Specifications »
Symbol
Features
CCSDS 122.0-B-1 Compliant, Complete and Standalone Operation
Full compliance to the CCSDS 122.0-B-1 specification
Numerically lossless or lossy compression
Up to 16 bits pixel dynamic range
Both integer and float 9/7 DWT
Integrated rate control
Operation without external memory
CPU/GPU-less, complete and standalone implementation
Smooth System Integration
Full abstraction of the internal implementation and CCSDS122.0-B-1 details from the top level I/O and its operation
Simple, microcontroller like, programming interface
High-speed, flow controllable, streaming I/O data interfaces
Simple and FIFO like
Avalon-ST compliant (ready latency 0)
AXI4-Stream compliant
Designed for both FPGA and ASIC implementations with user configurable architecture before synthesis
Configurable maximum supported image width
Configurable maximum supported pixel dynamic range (up to 8-, 12- or 16-bit)
Configurable DWT filter(s)
Integer only
Float only
Both integer and float
Trouble-Free Technology Map and Implementation
Fully portable, self-contained RTL source code
Strictly positive edge triggered design
D-type only Flip-Flops
Fully synchronous operation
No special timing constraints needed
No false or multi-cycle paths
« DescriptionDownloads »
Literature
CCSDS-122-E designer's reference manual
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