Description

The AT76C101 is an Image Compression/Decompression Processor that performs the JPEG Baseline Algorithm. The system is capable of high quality compression and decompression of continues-tone color or monochrome images. The AT76C101 performs the Discrete Cosine Transform, Quantization, and Entropy Encoding during the compression stage and carries out all inverse operations during the decompression phase. The AT76C101 uses an external SRAM as working memory, which is accessed by an onchip video interface.

Features

• Compatible with the JPEG Baseline Standard as Defined by ISO IS 109 18-1

• Highly-integrated, Low-cost Single Chip Solution

• Up to 40 Mbytes/sec Sustained Compression Rate

• Maximum Processing Rate of 1.6 million pixels/sec

• Supports 8-bit Grayscale and YUV 4:2:2 Color Space Input and Output Formats

• Handles Images of Size up to 1024 x 1024 Pixels

• Fast DCT/IDCT Processor On-chip

• User-defined Quantization and Huffman Tables

• Support for Fast as well as Slow/Inexpensive Memories

• Provides Direct Interface for Microcontroller/Microprocessor Access

Applications

The AT76C101 JPEG Processor is optimized for use in the following applications:

• Digital Cameras

• Color Printers and Plotters

• Low-cost Image Compression Systems

• Video Editing (3-4 frames/sec at CCIR 720 x 480 Image Resolution)