ZR36050PQC-21中文资料JPEG IMAGE COMPRESSION PROCESSOR数据手册Zoran规格书

描述 Description

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 mono chrome 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) packagingAPPLICATIONS
■ 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

特性 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