Basic Description

The AL701C is a 4 channel QUAD-screen video controller designed for accepting digital video input sources. It provides 2 analog output ports and 2 digital output ports. The AL701C supports 4 channel 8-bit ITU-R-656 4:2:2 interface inputs, dual 8/16-bit digital outputs, and dual analog video outputs.

Specifications and 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 for external encoders)
• 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

Application Scenarios

The AL701C can be used in various applications such as TV, camcorder, VCR, and other devices that require video processing and control. It is suitable for both consumer and professional use.

Comparison

• Supports multiple video formats
• Provides 4 independent video inputs
• Supports PIP function
• Offers programmable picture overlay
• Provides video loss and motion detection
• Supports various types of video decoder

• AL701C does not support external encoders for analog video outputs