株式会社テクノマセマティカル

Fixed Length Visually Lossless Compression


RGB/YCbCr version

RAW (Bayer) version

Single component version

Product Name

Fixed Length Visually Lossless Compression [RGB/YCbCr]

Product Overview

TMC’s original compression algorithm enables to compress and decompress the images to ​fixed-length with completely independent small block units. By using this technology, the memory capacity, data transmission bandwidth, and power consumption required for image data processing can be significantly reduced.

Model Numbers

Compression rate Model Numbers Image Format/Bit Depth Processing Block Size Throughput
Compress Decompress
1/2 TM273O3 RGB / 8bpc 2 row 2 col. 1 pixel / clk 1 pixel / clk
1/2 TM273Q3 RGB / 8bpc 1 row 4 col. 1 pixel / clk 1 pixel / clk
1/3 TM273P3 RGB / 8bpc 2 row 8 col. 4 pixel / clk 4 pixel / clk
1/3 TM27363 RGB / 12bpc 2 row 8 col. 2 pixel / clk 4 pixel / clk
1/4 TM273I3 RGB / 8bpc 4 row 4 col. 2 pixel / clk 4 pixel / clk
1/4 TM273F3 RGB / 10bpc 4 row 4 col. 2 pixel / clk 4 pixel / clk
1/6 TM273M3 RGB / 10bpc 4 row 4 col. 2 pixel / clk 4 pixel / clk
1/3 TM273H3 YCbCr444 / 8bpc 2 row 8 col. 2 pixel / clk 4 pixel / clk
1/6 TM273E3 YCbCr422 / 10bpc 4 row 8 col. 4 pixel / clk 4 pixel / clk

Features

Optimized design according to the application have achieved a compact circuit size and ultra-low power consumption performance. In addition, by using a small rectangular pixel set (block) as the processing unit, it has the following features.

  • Random access and Partial updates
  • Easy to extract the location of the compressed data
  • Easy parallel processing of compression
  • Low latency

Specification

Compression Format TMC’s original Format
Compression Unit Block (Block size is fixed for each IP )
Compression rate Fixed rate per block
Rate control Not necessary
Interface Specification Data and Data Enable

This IP supports both color spaces of YCbCr and YUV.

Application Examples


Product Name

Fixed Length Visually Lossless Compression [RAW (Bayer)]

 

Product Overview

TMC’s original compression algorithm enables to compress and decompress the Raw format images to ​fixed-length with completely independent small block units. By using this technology, the memory capacity, data transmission bandwidth, and power consumption required for Raw image data processing can be significantly reduced.

Model Numbers

  • Multi-bit depth support version       : TM273xx
  • Variable compression ratio version：TM273xx

Features

  • Independently compressed in blocks of 8×8 components, allowing random access and partial updates using these blocks as the minimum unit.
  • Easy to extract the location of the compressed data
  • Easy parallel processing of compression
  • Low latency

Specification

Compression Format TMC’s original Format
Compression Unit 8 row 8 col.
Compression rate Fixed rate per block
Rate control Not necessary
Interface Specification Data and Data Enable
Multi-bit depth support version Input    : Compatible with 8, 10, 12, 14, 16 bits

Output : 256 bits
Variable compression ratio version Bit depth                : 12 bits

Compression rate : Switchable compression ratio: 30/50/75％

Application Examples


Product Name

Fixed Length Visually Lossless Compression [Single Component]

Product Overview

TMC’s original compression algorithm enables to compress and decompress each component of images to ​fixed-length with completely independent small block units. By using this technology, the memory capacity, data transmission bandwidth, and power consumption required for various format image data processing can be significantly reduced.

Model Numbers

  • 8bpc version   :  TM273xx
  • 10bpc version: TM273xx

Features

  • As the processing is performed as grayscale, any formats such as RGB/YCbCr can be used.
  • Independently compressed in blocks of 1×8 components, allowing random access and partial updates using these blocks as the minimum unit.
  • Easy to extract the location of the compressed data
  • Easy parallel processing of compression
  • Low latency

Specification

Compression Format TMC’s original Format
Compression Unit 1 row 8 col.
Compression rate 1/2
Rate control Not necessary
Interface Specification Data and Data enable

 

Application Examples

As shown in the figure below, this IP is ideal for the applications where each component signal has a different destination,