描述 Description

GENERAL DESCRIPTION
The SAA7118 is a video capture device for applications at the image port of VGA controllers.
Philips X-VIP is a new multistandard comb filter video decoder chip with additional component processing, providing high quality, optionally scaled, video.
The SAA7118 is a combination of a four-channel analog preprocessing circuit including source selection, anti-aliasing filter and ADC with succeeding decimation filters from 27 to 13.5 MHz data rate. Each preprocessing channel comes with an automatic clamp and gain control. The SAA7118 combines a Clock Generation Circuit (CGC), a digital multistandard decoder containing two-dimensional chrominance/luminance separation by an adaptive comb filter and a high performance scaler, including variable horizontal and vertical up and downscaling and a brightness, contrast and saturation control circuit.FEATURES
Video acquisition/clock
? Up to sixteen analog CVBS, split as desired (all of the
?? CVBS inputs optionally can be used to convert e.g.
?? Vestigial Side Band (VSB) signals)
? Up to eight analog Y + C inputs, split as desired
? Up to four analog component inputs, with embedded or
?? separate sync, split as desired
? Four on-chip anti-aliasing filters in front of the
?? Analog-to-Digital Converters (ADCs)
? Automatic Clamp Control (ACC) for CVBS, Y and C (or VSB) and component signals
? Switchable white peak control
? Four 9-bit low noise CMOS ADCs running at twice the
?? oversampling rate (27 MHz)
? Fully programmable static gain or Automatic Gain
?? Control (AGC), matching to the particular signal
?? properties
? On-chip line-locked clock generation in accordance with “ITU 601”
? Requires only one crystal (32.11 or 24.576 MHz) for all standards
? Horizontal and vertical sync detection. (Continue...)APPLICATIONS
? PC-video capture and editing
? Personal video recorders (time shifting)
? Cable, terrestrial, and satellite set-top boxes
? Internet terminals
? Flat-panel monitors
? DVD-recordable players
? AV-ready hard-disk drivers
? Digital televisions/scan conversion
? Video surveillance/security
? Video editing/post production
? Video phones
? Video projectors
? Digital VCRs.

特性 Features

Video acquisition/clock
? Up to sixteen analog CVBS, split as desired (all of the
?? CVBS inputs optionally can be used to convert e.g.
?? Vestigial Side Band (VSB) signals)
? Up to eight analog Y + C inputs, split as desired
? Up to four analog component inputs, with embedded or
?? separate sync, split as desired
? Four on-chip anti-aliasing filters in front of the
?? Analog-to-Digital Converters (ADCs)
? Automatic Clamp Control (ACC) for CVBS, Y and C (or VSB) and component signals
? Switchable white peak control
? Four 9-bit low noise CMOS ADCs running at twice the
?? oversampling rate (27 MHz)
? Fully programmable static gain or Automatic Gain
?? Control (AGC), matching to the particular signal
?? properties
? On-chip line-locked clock generation in accordance with “ITU 601”
? Requires only one crystal (32.11 or 24.576 MHz) for all standards
? Horizontal and vertical sync detection. (Continue...)

應(yīng)用 Application

? PC-video capture and editing
? Personal video recorders (time shifting)
? Cable, terrestrial, and satellite set-top boxes
? Internet terminals
? Flat-panel monitors
? DVD-recordable players
? AV-ready hard-disk drivers
? Digital televisions/scan conversion
? Video surveillance/security
? Video editing/post production
? Video phones
? Video projectors
? Digital VCRs.