VooDoo DCR 6000, Planning & Installation Manual

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1. General DCR 6024/6128/6000
1 – 17 Planning and Installation – Rev. 1 / 7. 2001
1.6.2 DTV PROCESSOR DTV 6024
Digital serial input signal is a serial data stream composed of digital samples of a
component video signal Y / P
R
/ P
B
.
The signal formats for video are described in the SMPTE 274M. SMPTE 292M de-
scribes the signal parameters for serial interfaces.
The system uses an 10(8) bit quantization for Luminance and a 8 bit quantization
for chrominance.
SCCV Scanning Converter
The digital serial video input signals are fed to the board SCCV. The signal is con-
verted from serial into parallel. Progressive signals are converted into a segmented
signal. For progressive and segmented frame modes (24, 25, 23.97 fr/sec) 2 LSB
bits from the 10 bit Y are separated and stored in a memory and inserted as lines
of the frame. In case of 8 bit signal processing and 10 bit input, a rounding process
is integrated.
VINP Video Input Processor
The selected input data are fed to the serial parallel converter and converted into
4 channel parallel luminance data (Y) and 4 channel chrominance data (Pb/Pr).
After line shuffling, parity bytes for the outer error correction coding are added.
CODC 1-4 Inner Coder/Decoder
The coded data are fed to the board CODC. On this board, the coded data are fur-
ther shuffled in a field basis.
After mixing with the audio data, parity bytes for the inner error correction coding
are added.
In the channel encoder, the eight bits data are transformed into 12 bits data, then
the sync words are added.
A head delay compensates for the timing difference between each channel,
caused by the difference of the mechanical position of each head on the head-
wheel.
Finally, the data are converted to serial data (8 channel record data, 2 bit parallel),
and sent to the Tapedeck as ”record data” via the buffer board I/O1.
The digital audio interface meets the AES-/EBU- standard AES 3, 1992.
A total of 12 (10) channels or 6 (5) stereo pairs is available for the digital recording
of audio signals, it uses a sampling frequency of 48 kHz and 20 to 24 bit linear quan-
tization.
Digital Video
Interfaces
Video Record
AES-/EBU-
Standard