AL37204 - AverLogic Technologies, Inc.

AL37204

Video ASIC for 4 Channel multiplexing

Applications

Time Division Multiplexer

Digital Video Recorde r

Video Server

General Description

AL37204 is an ASIC solution for QUAD, Color

Multiplexer, DVR and Video Server in CCTV system.

It can support 4 camera inputs multiplexer for triplex

operation. The input data interface is CCIR656 4:2:2

8-bit format. It has (Max.) 3 output paths for flexible

combination of live/ spot monitoring, play and

VCR/DVR recording. The output data interface has

the analog s-video/ composite/ RGB progressive and

digital CCIR656 YUV 4:2:2 8-bit and progressive

RGB 4:4:4 24-bit video formats in NTSC/PAL video

system. (NTSC: 30 frame/sec, PAL: 25 frame/sec).

Direct m em ory access (D M A) allo ws im age data to b e

uploaded to PC. DDR memory is supported via a

direct video frame buffer interface for quick replay.

Via serial I2C interface or host parallel bus, the fully

programmable registe r sets allow fl exi ble con tro l of

the video window overlay, OSD display, VBI, and

input/output channel source selection etc.

More features offered include PIP, POP, channel

freeze, scaling down, re-play function, OSD function,

VBI decoding and encoding, zoom ing with H/ V linea r

interpolation, anti-rolling, image panning/ flipping/

mirroring, channel switching, priority (weighting)

recording, GOP recording for DVR, video loss/ blind

detection and motion detection that increase the value

of a high quality system designn.

External Device Interface

- Image CODEC Interface

- AL37204 to achieve 4-ch multiplexer

- 8 bit Host Parallel interface & I2C serial interface

- 16-bit DDR Interface (256/512M bit, 133MHz)

- Color Video Decoder/Encoder Interface

Electric Characteristic

- Operating voltage: 1.8 volt (Core), 3.3 volt (I/O)

- Operating temperature range : 0 ~ 70кк

- 216 Pin LQFP package

- 27 MHz main clock

- Low power

General Features

- Support NTSC and PAL standards

- Triple x opera tion suppo rt rea l-time monitori ng ,

recording, and playback independently

4 channels live multiplexing with 1 chip, 8/16

channels non-real-time multiplexing with 1 chip

(NTSC: 30 frame/sec, PAL: 25 frame/sec)

Programmable size/location, panning flipping,

mirroring and tilting for every channel

Internal scaling function (1/2, 1/3, 1/4, 2/3, 3/4)

- Support PIP /POP, and anti-rolling channel switching

- Individual channel freeze operation

- Support linear Zooming function for monitoring

and playback modes(with independent vertical and

horizontal linear interpolation)

- Embedded internal OSD; BMP Image overlay and

flexible font display

- Direct connection to video decoder/ encoder, TV

monitor, VCR, MPEG/M-JPEG CODEC IC

- No dirty frame during channel switching under

monitoring, recording and playback mode

- Support DDR (16-bit) interface more 4G bits

memory

- Support 4/ 8/ 16 channels GOP recording function

of full, semi-full channel and QUAD frame output

- Priority (weighting) recording of special event

channels (internal or external alarms)

- Support individual channel video loss/ blind

detection; last still image displayed at the specified

channel when video-loss detected

Support individual channel motion detection in

hardware and software; programmable motion area/

velocity / sens it ivity

Last image captured before alarm events triggered

for indiv idual chan nel

More Prog rammable setting s for special alarm events

Support channel-switching (Max. 4 channel per

decoder) feature at front video decoder

- Programmable brightness, contrast and saturation

function

VBI insertion and extraction

Channel index information access and control by

host interfac e

Individual channel replay function directly from

DD R memor y

Support VCR/ DVR playback

React VCR/ DVR external triggering signal in

time- lapse reco rding mode

Programmable channel indexing for recording

Application Block Diagram

TV decoder

TVP5150

SAA7113/4

TW9903

etc.

Satellite Receiver

CCD Camera

Time Division M ultiplexer

DVR

Video Server

Real-Time

Multiplexer

Controller

4 ch @ 1x AL37204

CMOS Camera

IP Camera

Monitor

LCD panel

Digital Recorder

(HDD, CDRW)

VCR/D-VHS

Webcam

Video

Digital Video Recorder

(HDD, DVD) TV decoder

TVP5150

SAA7113/4

TW9903

etc.

VCR/D-VHS

AverLogic Technologies, Corp.

4F, No. 514, Sec. 2, Cheng Kung Rd. ,

Nei-Hu Dist., Taipei, Taiwan

Tel: +886 2-27915050

Fax: +886 2-27912132

E-mail: sales@averlogic.com.tw

URL: http://www.averlogic.com.tw

More Features

The AL37304 OSD windows provide overlay of

various graphic images like pop-up menu, camera

index, programmable bitmap or message text, etc.

High quality multi-channel and adjustable zoom

display with less aliasing provides full control of

digital magnification of any camera for closer view. It

can output the digital YUV and RGB format at the

same tim e for m onitoring, record ing and comp ression.

Advanced motion detection with programmable

detection mask and sensitivity level of each camera.

Accessib le registe r/data of moving vector for track ing.

User can decide which image frame will be displayed

or recorded on monitor/VCR/- DVR output when

events triggered. It supports 4/8/16 Channel GOP

recording (Max. 15 frame/Group,  1.5G bits) and

>256 fields (>12 G bits) for replay. It can support 4 x

1G bits memory in total. Proprietary priority

(weighting) recording makes the interested channels

almost l ik e liv e recording with minor control lab le los s

of other channels recording. Flexible alarm handling

for priority (or exclusive) alarm events recording and

monitoring at individual channel. All input channels

including camera and playback channels will support

replay feature.

AverLogic’s proprietary digital and analog signal

processing tec hnol og ies cre ate a h ig h qua lity tear fre e,

flicker free and anti-aliasing display. The AL37204

provides a cost-effective and flexible solution for all

applications of security related system.

AverLogic Technologies, Inc.

90 Great Oaks Blvd, suite 204,

San Jose, California 95119, USA

Tel: 1 408 361-0400

Fax: 1 408 361-0404

E-mail: sales@averlogic.com

URL: http://www.averlogic.com