Sanyo DVD-DX500 Service Manual page 7

CIRCUIT OPERATIONAL DESCRIPTION
MPEG Decoder
The signal read from DVD disc is output into the RF signal and Servo related signal through
the RF IC and they are input into the MPEG decoder and processed the MPEG decoding
and divided into video/audio signal. The video signal is output into the analog audio signal
through the built-in encoder block and also the audio signal into the audio DAC through the
audio decoder block.
MPEG decoder consists of existing MPEG-2 decoder and single chip combined the digital sig-
nal processing part which is the core technology of DVD player with the Servo controller.
) DVD Servo And MPEG-2 Decoder : MT389D
MediaTek MT389 is a DVD player system-on-chip (SOC) which incorporates advanced
features like high quality TV encoder and state-of-art de-interlace processing. The
MT389 enables consumer electronics manufacturers to build high quality, cost-effec-
tive DVD players, portable DVD players or any other home entertainment audio/video
devices.
Based on MediaTek's world-leading DVD player SOC architecture, the MT389 is the
3rd generation of the DVD player SOC. It integrates the MediaTek 2nd generation
front-end analog RF amplifier and the Servo/MPEG AV decoder.
The progressive scan of the MT389D utilized advanced motion-adaptive de-interlace
algorithm to achieve the best movie/video playback. It also supports a 3:2 pull down
algorithm to give the best film effect. The 08MHz/2-bit video DAC provides users a
whole new viewing experience.
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DVD Player System Diagram
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2005-12-29 8:58:39