[ZORAN Corporation]

GENERAL DESCRIPTION
The ZR36050 is a high-speed JPEG Image Compression Processor that performs the algorithm specified by the JPEG Baseline and JPEG Lossless standards for high-quality image compression and expansion of continuous-tone color or monochrome images. The ZR36050 performs Discrete Cosine Transform (DCT), quantization and variable-length encoding for image compression (coding), and the corresponding inverse operations for expansion (decoding).

FEATURES
■ Implements JPEG Baseline image compression and  expansion, including:
   - DCT/IDCT operations
   - Quantization
   - Variable length coding/decoding
■ Full support of the JPEG Baseline standard, including:
   - Bit and byte stuffing
   - JPEG markers including restart (RST), application (APP),  and comment (COM)
■ JPEG Lossless compression and expansion
■ DMA/SLAVE bus interface
■ Motion video (30 frames/sec) compression/expansion  capability for CCIR resolution (720 x 480)
■ “Fast Preview” option
   - Preview of “thumbnail” version of images (up to 25x faster)
■ Bit rate control option
   - Guarantees compressed image file size
■ Low cost solution
   - Low cost single chip
   - Support for inexpensive memories
   - Requires minimal host intervention
■ TTL compatible
■ 27 and 21 MSamples/sec data-rate
■ Standby mode for very low power consumption
■ 100-pin plastic quad flat-pack (PQFP) packaging

APPLICATIONS
■ Computer and multimedia add-in boards
■ Full-motion video compression/expansion
■ Digital still cameras and peripherals
■ Security and industrial systems
■ Videophones and color FAX machines
■ Color printers and scanners
■ Fixed bit rate image transmission devices
■ Cost-sensitive image compression systems