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HIM
features:
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MPEG
I-frame encoder for 800x600 screen
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Supports
both 4:1:1 and 4:4:4 chroma formats (the latter format is preferred
for screens with fine text)
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Upto
2 frames/sec (for 1Mbps) and upto 20 frames/ sec (for 1Mbps) encoding
rates
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RGB-to-YCC
conversion, I-frame MPEG encoding, frame rate control, and keyboard/
touchscreen/ mouse control data multiplexing with MPEG data are implemented
on a single TMS320C6201B DSP. Routing of received keyboard/ touchscreen/
mouse data to microcontroller is also implemented by the DSP.
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Direct
(analog) input from PC's VGA connector
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Keyboard/
touchscreen/ mouse control data multiplex and keyboard/ touchscreen/
mouse data demultiplex are implemented on a MC68HC705P6A microcontroller
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DIM
features:
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MPEG
I-frame decoder for 800x600 LCD screen
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Automatic
detection of 4:1:1 and 4:4:4 chroma formats
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Keyboard/
touchscreen/ mouse control data demultiplexing (from received data
also containing MPEG data), I-frame MPEG decoding and YCC-to-RGB conversion
are implemented on a single TMS320C6201B DSP. Routing of keyboard/
touchscreen/ mouse data from microcontroller is also implemented by
the DSP.
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Video
output to standard TFT display's (18-bit parallel 3.3V TTL interface)
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Keyboard/ touchscreen/ mouse control data demultiplex and keyboard/
touchscreen/ mouse data multiplex are implemented on a MC68HC705P6A
microcontroller
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Choice of RS-485 or fiber-optic link from HIM to DIM. RS-485 supports
1 Mbps in both directions, while the fiber-optic link supports 10
Mbps from HIM to DIM and 1Mbps in the reverse direction
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