Instruction manual

HDE-3000 - 81 -
Current HDE-3000 Implementation
The HDE-3000 software release version 1.35 meets all of the requirements listed in the
previous sections. The HDE-3000 can encode all current popular EIA-608 caption files, and
it will easily be able to encode EIA-708 caption files when they emerge.
When the HDE-3000 encodes an EIA-608 caption file, it “up converts” or “transcodes”
the EIA-608 captions to EIA-708. To do this, it interprets the EIA-608 captions and creates
EIA-708 captions that will produce the same display on an EIA-708 decoder that the EIA-
608 captions will produce on an EIA-608 decoder. The EIA-708 captions produced by this
“up conversion” or “transcoding” process are referred to as “derived EIA-708 captions”.
The HDE-3000 also creates and encodes a list of caption service descriptors. It encodes
one caption service descriptor for each encoded caption service.
As per the requirements of the specifications, the HDE-3000 encodes the EIA-608
captions, the “derived” EIA-708 captions, and the caption service descriptors into the VANC
area of the HD video. The HDE-3000 also decodes and displays all of this data for
monitoring purposes.