Functional Description
10.4.1.2
Video Playback
10.4.1.2.1 Deinterlacing Support
For display on a progressive computer monitor, interlaced data that has been
formatted for display on interlaced monitors (TV) needs to be de-interlaced. The
simple approaches to de-interlacing create unwanted display artifacts. More advanced
de-interlacing techniques have been developed to provide a high-quality, effective
solution. The Motion Adaptive Deinterlacing supported in the GMCH greatly reduces
the feathering artifacts typical with Weave deinterlacing and the jaggies typically
associated to Bob deinterlacing. Clear, sharp text is another benefit on Intel’s Motion
Adaptive Deinterlacing technique.
10.5
Display Interfaces
The GMCH has three display ports, one analog and two digital. Each port can transmit
data according to one or more protocols. The digital ports are connected to an
external device that converts one protocol to another. Examples of this are TV
encoders, external DACs, LVDS transmitters, and TMDS transmitters. Each display
port has control signals that may be used to control, configure and/or determine the
capabilities of an external device.
The GMCH has one dedicated display port, the analog port. SDVO ports B and C are
multiplexed with the PCI Express graphics interface and are not available if an
external PCI Express graphics device is in use. When a system utilizes a PCI Express
graphics connector, SDVO ports B and C can be utilized via an ADD2/Media Expansion
(Advanced Digital Display 2) card. Ports B and C can also operate in dual-channel
mode, where the data bus is connected to both display ports, allowing a single device
to take data at twice the pixel rate.
•
The GMCH’s analog port uses an integrated 400 MHz RAMDAC that can directly
drive a standard progressive scan analog monitor up to a resolution of 2048x1536
pixels with 32-bit color at 75 Hz.
•
The GMCH’s SDVO ports are each capable of driving a 270-MP pixel rate. Each
port is capable of driving a digital display up to 1600x1200 @ 60 Hz. When in
dual-channel mode, the GMCH can drive a flat panel up to 2048x1536 @ 75 Hz or
dCRT/HDTV up to 1920x1080 @ 85 Hz.
The GMCH is compliant with DVI Specification 1.0. When combined with a DVI
compliant external device and connector, the GMCH has a high speed interface to a
digital display (e.g., flat panel or digital CRT).
Datasheet
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INTEL [ INTEL ]
