adv611 Analog Devices, Inc., adv611 Datasheet

adv611

Manufacturer Part Number

adv611

Description

Closed Circuit Tv Digital Video Codec

Manufacturer

Analog Devices, Inc.

Datasheet

1.ADV611.pdf (46 pages)

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GENERAL DESCRIPTION

The ADV611/ADV612 are low cost, single chip, dedicated func-

tion, all-digital-CMOS-VLSI devices capable of supporting

visually loss-less to 7500:1 real-time compression and decom-

pression of CCIR-601 digital video at very high image quality

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

FEATURES

Programmable “Quality Box”

Industrial Temperature Range (ADV612)

Hardware Frame Rate Reduction

100% Bitstream Compatible with the ADV601 and

Precise Compressed Bit Rate Control

Field Independent Compression

8-Bit Video Interface Supports CCIR-656 and Multi-

General Purpose 16- or 32-Bit Host Interface with

PERFORMANCE

Real-Time Compression or Decompression of CCIR-601

Compression Ratios from Visually Loss-Less to 7500:1

Visually Loss-Less Compression At 4:1 on Natural

APPLICATIONS

CCTV Cameras and Systems

Time-Lapse Video Tape Recorders

Time-Lapse Video Disk Recorders

Wireless CCTV Cameras

Fiber CCTV Systems

ADV601LC

plexed Philips Formats

512 Deep 32-Bit FIFO

to Video:

Images (Typical)

720

288 @ 50 Fields/Sec — PAL

243 @ 60 Fields/Sec — NTSC

COMPONENT

VIDEO I/O

I/O PORT

DIGITAL

VIDEO

ADV611/

ADV612

FUNCTIONAL BLOCK DIAGRAM

CONTROL

QUALITY

BOX

LOCATION, SIZE AND CONTRAST CONTROL

256K

INTERPOLATOR

DECIMATOR &

TRANSFORM

WAVELET

MANAGER

FILTERS,

ON-CHIP

BUFFER

DRAM

16-BIT DRAM

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

levels. The chips integrate glueless video and host interfaces

with on-chip SRAM to permit low part count, system level

implementations suitable for a broad range of applications.

The ADV611/ADV612 are 100% bitstream compatible with

the ADV601. The ADV611/ADV612 comes in a 120-lead

LQFP package.

The ADV611/ADV612 are video encoders/decoders optimized

for closed circuit TV (CCTV) applications. With the ADV611/

ADV612, you can define a portion of each video field to be at a

higher quality level relative to the rest of the field. This “quality

box” feature significantly increases compression of less impor-

tant background details, while retaining the image’s overall

context. Additionally, the unique subband coding architecture

of the ADV611/ADV612 offer many application-specific

advantages. A review of the General Theory of Operation and

Applying the ADV611/ADV612 sections will help you get the

most use out of the ADV611/ADV612 in any given application.

The ADV611/ADV612 accept component digital video through

the Video Interface and outputs a compressed bitstream though the

Host Interface in Encode Mode. While in Decode Mode, the

ADV611/ADV612 accept compressed bitstream through the Host

Interface and outputs component digital video through the Video

Interface. The host accesses all of the ADV611/ADV612’s control

and status registers using the Host Interface. Figure 2 summarizes

the basic function of the part.

ANALOG

SENSOR

SIGNAL

IMAGE

VIDEO

SUBBAND STATISTICS

QUANTIZER

& ENTROPY

CODING

DECODER

DIGITIZER

BIN WIDTH CONTROL

ADV7185

Closed Circuit TV Digital

Figure 1. Typical Application

World Wide Web Site: http://www.analog.com

I/O PORT

& FIFO

HOST

ADV611/

ADV612

ADV611/ADV612

16/32

ADSP-21xx

HOST

Video Codec

QUALITY BOX CONTROLS

FROM REMOTE SITE

(continued on page 2)

SERIAL

OR PARALLEL

BITSTREAM FOR

TRANSMISSION

OR STORAGE

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