Once decoded, the output pictures are passed to a sophisticated video sub-system that performs video
enhancement and scaling functions. Contrast enhancement, hue adjustment, video scaling, video
interpolation, pan-scan, letter-box, and zoom are also supported. The scalar supports both up-scaling
and down-scaling of images and video. The scalar can also mix in multiple graphics and OSD layers
for the final display. The integrated video encoder supports all video resolutions from traditional
NTSC/PAL to 1080p high definition video output thru the on-chip triple video DACs.
The integrated Audio AMRISCTM RISC processor performs advanced digital audio decoding and
postprocessing. The micro-coded engine provides support for all existing audio formats and it also
hasenough flexibility to accommodate new audio standards. Popular audio formats like MPEG, LPCM,
Dolby. AC-3 5.1, HDCD, MP-3, WMA, AAC, RealAudio and FLAC can be supported.
The AML7228 also integrated two USB 2.0 High Speed OTG controllers and PHYs for connecting to
USB hard disk, FLASH memory. The AVOS drivers and applications for AML7228 firmware includes
the basic USB device driver, USB protocol stacks to support bulk and INTR transfer, Hub,
Mass-Storage (MS) class, Picture Transfer Protocol (PTP) and PictBridge protocol. The AVOS USB
firmware also supports multiple file systems and includes flexible file transfer functions between USB
devices.
I410 PIC12F675
A microprocessor to power-on the TV set when receiving the power-on code from RS232.
ViewSonic Corporation Confidential - Do Not Copy VTMS2431
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