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AL701

QUAD Video Processor

AverLogic Technologies Inc 

AL700/701/710

1 General Description

AL700/701/710 is a 4 channel QUAD-screen video controller that can accept digital video input

sources, provides 2 analog output ports (not for AL701), 2 digital output ports, and memory direct

access mode allowing images to be uploaded onto a PC. AL700/701/710 not only supports 4

channel 8-bit ITU-R-656 4:2:2 interface inputs, dual 8/16-bit digital outputs for successive process

and dual analog (TV encoder embedded, not for AL701) video outputs for TV, Camcorder, VCR,

etc. SDRAM memory is supported via a direct video frame buffer interface. Through I2C serial or

proprietary parallel bus, fully programmable register set allows flexibility of control of video

window overlay, OSD display, input channel select or output source select.

OSD (On Screen Display) windows provide overlay of various graphics images such as Pop-up

menu, logo bitmap or message text, etc. Other functions provided by AL700/701/710, such as PIP

(Picture In Picture), 2X zoom with vertical and horizontal interpolation, anti-rolling and motion

detection, can increase the value and power of a security system design. Averlogic’s proprietary

digital and analog signal processing technologies create a high quality tear free, flicker free and anti-

aliasing display. The AL700/701/710 provides a cost-effective solution for all applications of

security related system.

All parts are available in 208-pin PQFP packages.

2 Features

! Accepts NTSC, PAL and SECAM video formats

! Supports 4 independent 656/601 8-bit video inputs

! Supports multiplexing function for 2 channels using one decoder

! Provides 2 independent 656/601 8/16-bit digital outputs

! Provides 2 independent S-video/Composite analog video outputs (no need external encoders,

not for AL701)

! Picture location selectable

! Supports PIP (Picture-In-Picture) function

! Supports programmable picture overlay and layer priority

! Displays picture at arbitrary channels of 1,2,3 and 4

! Provides channel switching without rolling

! Freeze individual channel

! Provides video loss detection and motion detection

! 2X zoom with vertical and horizontal interpolation

! Provides embedded OSD (On Screen Display) and supports external OSD function

! Supports BMP image overlay and Non-fixed font display

! Provides fading effects for OSD overlay

! Supports various types of video decoder and 1Mx16 or 4Mx16 SDRAM

! Supports registers programming via I2C serial or proprietary parallel interface

! Supports uploading image data onto PC

! Provides horizontal image mirroring

! Available in 208-pin 28*28mm PQFP

! Note: AL710 only supports Black & White video mode

©2001,2002-Copyright by AverLogic Technologies, Corp. Preliminary Version C1.1 4

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