Toshiba TDP-D1 Service Manual page 95

DMD Frame Overview
The DLPTM DDP1000 based component set provides a highly integrated, high performance
DLP solution, which enables manufacturers to create small size, high brightness projectors. The
component set, when implemented with the proposed reference design, provides all the electronics
required to drive and control the DLPTM display sub system on about 10 to 12 in2 of PWB.
The DDP1000 ASIC integrates an embedded ARM7 microprocessor and FPGA/ASIC
functionality on to a single chip. A single Flash memory is utilized for ARM7 code and DMD
sequence information. With a Double-Data-Rate (DDR) DMD output up to 60MHz, the DDP1000
supports faster DMD load times giving more flexibility to system designers for color and brightness
tradeoffs and improved video performance. To support the higher bandwidth DMD interface, the
DDP1000 utilizes a high bandwidth single 128Mbit or 256Mbit Direct RDRAM memory. In addition
to a more integrated DLP solution, the DDP1000 also offers improved image quality through
advances in DLP image processing. As with prior DLP electronics solutions, image data is 100%
digital from the input port to the image projected on the display screen. Digital input is accepted
from the 24-bit RBG/YUV image input port up to the native DMD resolution. The DDP1000
processes the digital input and converts the data into a bitplane output format to drive the DMD
image bus. The DDP1000 provides improved boundary dispersion and a new blue-noise spatial
temporal multiplexing (STM) algorithm for improved low level noise performance. In addition to
degamma, color space conversion, white peaking, contrast and brightness image adjustments, the
DDP1000 offers enhanced color correction allowing independent adjustment of primary and
secondary colors and white point. The DDP1000 also provides a new dark histogram function to
enhance the contrast and brightness of certain images. The DDP1000 provides system level control
for the lamp and color wheel and support for fan control. The DDP1000 based product offers 2x
color wheel operation for RGWB and RGWBRGB color wheels and 3x color wheel operation for
RGWB wheels. The 2x RGWBRGB and 3x RGWB configurations offer reduction in color
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