Digital IP Cores
and Subsystems

Our family of microcontroller and microprocessor related cores includes capable and competitive 32-bit BA22s and the best-available set of proven 8051s.

32-bit Processors
BA2x Family Overview

Secure Processors
Geon - Secure Execution

Application Processors
BA25 Adv. App. Processor
BA22 Basic App. Processor

Cache-Enabled Embedded
BA22 Cache-Embedded

Embedded Processors
BA22 Deeply Embedded
BA21 Low Power
BA20 PipelineZero

Processor-Based AMBA® Subsystems
Family Overview
AHB Low-Power
AHB Performance/Low-Power
AXI Custom Performance

AMBA Bus Infrastructure Cores
See Peripherals Cores >

Efficiently compress media or data with these high-performance hardware codecs. See the video and image compression Family Page for a media compression overview.

 H.264 Video Decoders
Low Latency Constrained
  Baseline Profile

Low-Power Constrained
  Baseline Profile

 H.265 HEVC Decoders
Main Profile

Companion Cores
Image Processing
CAMFE Camera Processor
Network Stacks
40G UDPIP Stack
1G/10G UDPIP Stack
• Hardware RTP Stack
  – for H.264 Encoders
  – for H.264 Decoders
  – for JPEG Encoders
IEEE 802.1Qav & 802.1Qbv

• MPEG Transport Stream

JPEG Still & Motion

Lossless & Near-Lossless

Lossless Data Compression
GZIP Compressor
GUNZIP Decompressor
GZIP Reference Designs
    • for Intel FPGAs
    • for Xiinx FPGAs

Easily integrate memories, peripherals, and hardware networking stacks into SoCs.

Display Controllers

Device Controllers
smart card reader

Flash Controllers
Parallel Flash
Parallel Flash for AHB
Universal Serial NOR/NAND
   Flash for AHB

Quickly complete the standard parts of your SoC with these memory and peripheral controllers, interfaces, and interconnect cores.

Octal/Quad/Dual/Single SPI
Quad SPI
Single SPI
SPI to AHB-Lite

Master/Slave Controller
Master  • Slave

These encryption cores make it easy to build security into a variety of systems.

GEON SoC Security
GEON Security

Encryption Primitives
AES, Programmable
Key Expander
Single, Triple

Hash Functions
SHA-3 (Keccak)

JPEG-LS Encoder

  • Highly Efficient Numerically Lossless Compression
    • Better compression ratio than most lossless compression algorithms (JPEG2000, PNG, etc.)
  • Near-Lossless Compression
    • Enables greater compression with visually lossless quality by constraining the maximum difference between reconstructed and original image samples
  • Maximum image resolution of 64Kx64K, or higher with via support for oversize image dimension parameters
  • Up to 16 bits per color sample; up to four color components

Easy to Use and Integrate

  • Run-time programmable input and encoding parameters
    • Image resolution, number of color components, color depth
    • Maximum reconstruction error, Point-Transform, Local Gradient, Reset Frequency
  • Automatic program-once encode-many operation
  • AXI4-Stream interfaces for image and compressed data, and 32-bit wide APB for register access
  • Dedicated, easy-to-use timestamps interface

Versions and Throughput

  • Area-optimized JPEG-LS-E-S: one sample per cycle

    • 40,000 eq. gates and up to 500 Msamples/sec on a typical 28nm technology

  • Throughput optimized JPEG-LS-E-F:  synthesis-configurable number of samples per cycle


  • Source code RTL (Verilog) or Targeted FPGA Netlist

  • Bit Accurate Model

  • Sample simulation and synthesis scripts

  • Verification testbenches

  • Comprehensive documentation

Contact Sales
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+1 201.391.8300

Downloads (PDFs)

Related Products

Useful References

Blog Posts

JPEG-LS-E Lossless & Near-Lossless JPEG-LS Encoder

The JPEG-LS-E core implements a highly-efficient, low-power, lossless and near-lossless image compression engine that is compliant to the JPEG-LS, ISO/IEC 14495-1 standard.

Based on LOCO-I (LOw COmplexity LOssless COmpression for Images), the JPEG-LS algorithm leads in numerically lossless compression efficiency, attaining compression ratios similar or superior to those obtained with more advanced algorithms such as JPEG2000. JPEG-LS also enables hardware implementations with a much smaller silicon footprint and lower memory requirements, thanks to its lower computational complexity and line-based processing. Further, the Near-Lossless mode of the JPEG-LS standard makes higher compression ratios and visually lossless compressed images feasible, allowing the user to set the maximum acceptable difference between a reconstructed and an original image sample.

The JPEG-LS-E core delivers the full compression efficiency of the standard in a compact and easy-to-use hardware block. The core interfaces to the system via standardized AMBA® interfaces: it accepts images and outputs compressed data via AXI4-Stream interfaces, and provides access to its control and status registers via a 32-bit APB interface. After its registers are programmed, the core can encode an arbitrary number of images without requiring any further assistance or action from the system. Users can optionally insert timestamps or other metadata in the compressed stream using a dedicated AXI Streaming interface.

The core is designed with industry best practices, and its reliability has been proven through both rigorous verification and silicon validation. The deliverables include a complete verification environment and a bit-accurate software model.

This core can be mapped to any Intel, Lattice, MicroSemi, or Xilinx programmable device, or to any ASIC technology, provided sufficient silicon resources are available. Please contact CAST Sales to get accurate characterization data for your specific implementation requirements. Meanwhile, we provide the following representative results (each in a new pop-up window):

ASIC numbers Altera numbers Xilinx numbers


The core is available in two versions: size-optimized JPEG-LS-ES and scalable throughput JPEG-LS-EF. The JPEG-LS-ES version uses just 40K gates, provides a throughput of one sample per cycle, and requires only one image line of buffering. A single JPEG-LS-ES core can compress several hundreds of Msamples per second when mapped on an ASIC technology. The scalable-throughput JPEG-LS-EF version can process multiple samples per cycle by internally aggregating a user-defined number of JPEG-LS-ES cores. It is suitable for compressing images or video with ultra-high resolutions and/or frame rates.

Block Diagram

JPEG-LS-E Lossless & Near-Lossless JPEG-LS Encoder

Silicon Resources Utilization

The encoder core can be mapped to any ASIC technology. The JPEG-LS-ES version requires about 40k gates and can run up to 500MHz in a typical 28nm technology. The size of a JPEG-LS-EF version depends on its configuration: please consult with CAST to get accurate characterization data for your target technology and required core configuration.


The core as delivered is warranted against defects for ninety days from purchase. Thirty days of phone and email technical support are included, starting with the first interaction. Additional maintenance and support options are available.


The core is available in source code RTL (Verilog) or as an FPGA netlist, and its deliverables include everything required for successful implementation:


The JPEG-LS-E is suitable for systems requiring numerically or visually lossless compression of images or video of potentially high color or greyscale accuracy. Application areas include medical Imaging (DICOM), aerospace imaging or surveillance, and advanced driver assistance systems.

JPEG-LS Compression Efficiency

Despite its lower computational complexity JPEG-LS offers exceptionally high lossless compression efficiency. JPEG-LS is expected to outperform PNG, and to provide similar compression ratios as lossless JPEG 2000 for both color and greyscale images.

The following shows the lossless compression advantage of JPEG-LS over other, more complex algorithms using several indicative example images.

JPEG-LS-E Lossless & Near-Lossless JPEG-LS Encoder compression advantage graphic

JPEG Cores available from CAST

The JPEG-LS-E is one member of the JPEG family of JPEG encoder and decoder cores that CAST offers. The following table summarizes the family members and highlights their basic features.

  JPEG IP Cores JPEG-LS IP Cores

JPEG Encoder

JPEG Encoder

Ultra Fast Extended
JPEG Encoder

JPEG Decoder

JPEG Decoder

Ultra Fast Extended
JPEG Decoder

JPEG-LS Encoder

JPEG-LS Decoder

Function Encoder Decoder Encoder Decoder
Compression Type  Lossy Lossless/Lossy
Compression Standard JPEG — ISO/IEC 10918-1 JPEG-LS —  ISO/IEC 14495-1
Supported Standard Modes Baseline Sequential DCT Baseline Sequential DCT and Extended Sequential DCT Lossless& NEAR lossless Baseline Sequential DCT and Extended Sequential DCT Lossless & NEAR lossless
Motion JPEG Payload included included included included included included not supported not supported
Sub-sampling Formats Any with up to four components including Single–color, 4:4:4, 4:2:2, 4:2:0
Max. Image Resolution 64k x 64k 64k x 64k > 64k x 64k
Max. Sample Depth 8 12 12 8 12 12 16
Rate control included included included N/A N/A N/A N/A
Raster Conversion Included – Optionally Instantiated Included – Optionally Instantiated N/A
Color Samples/Cycle 1 1 1 to 32 1 1 1 to 32 1 to 32 1 to 32
ASIC Area  (eq. Gates) 70k 80k 120k1 65k 75k 110k1 40K2 40K2
Available in RTL Source Code not supported included included not supported included included included included
Available as targeted netlist included included included included included included included included


1) Silicon Resources for two samples/cycle configuration, and 12 bits per color sample.

2) Silicon Resources for one sample/cycle configuration, and 8 bits per color sample.




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