OmniTek Webcam 2.3 Manual Do Utilizador
OmniTek XR User Guide, Software Release 2.3
Page 101
Note:
In all, an extensive amount of information can be displayed. If simply opening and closing
sections of the hierarchy doesn’t give you the display you need, you can ‘filter’ the
information down to just those items you are interested in (and save the filtering you
select). This is described in the section starting on page 119.
sections of the hierarchy doesn’t give you the display you need, you can ‘filter’ the
information down to just those items you are interested in (and save the filtering you
select). This is described in the section starting on page 119.
SMPTE 337 Preamble
The section relating to the SMPTE 337 Preamble displays the following information:
Sync word 1
For data burst containing 16-bit Dolby-E data, this should be 0xF872
For data burst containing 20-bit Dolby-E data, this should be 0x6F872
For data burst containing 24-bit Dolby-E data, this should be 0x96F872
For data burst containing 20-bit Dolby-E data, this should be 0x6F872
For data burst containing 24-bit Dolby-E data, this should be 0x96F872
Sync word 2
For data burst containing 16-bit Dolby-E data, this should be 0x4E1F
For data burst containing 20-bit Dolby-E data, this should be 0x54E1F
For data burst containing 24-bit Dolby-E data, this should be 0xA54E1F
For data burst containing 20-bit Dolby-E data, this should be 0x54E1F
For data burst containing 24-bit Dolby-E data, this should be 0xA54E1F
Bit depth
16-, 20- or 24-bit
Data Type
28 (for Dolby-E)
Data mode
0 for 16-bit; 1 for 20-bit; 2 for 24-bit
Error flag
1 if the data may contain errors
Burst
information
information
Data type, Data stream number
Both 0 for Dolby-E
Length code
Unsigned integer giving the number of data bits burst payload. Limited to
65535 for 16-bit data; 1048575 for 20-bit data; 16777215 for 24-bit data
65535 for 16-bit data; 1048575 for 20-bit data; 16777215 for 24-bit data
Guard Band Position
The video line at which the Dolby frame was found to start. This line number will be
shown in red if any frame since the last reset has been found to start outside the Guard
Band. (The frame(s) with this error can be found by studying the log.) With the “Errors”
showing the total number of Guard band Position errors since the last reset.
shown in red if any frame since the last reset has been found to start outside the Guard
Band. (The frame(s) with this error can be found by studying the log.) With the “Errors”
showing the total number of Guard band Position errors since the last reset.
Dolby-E Frame
The remainder of the Dolby-E display comprises the data within the metadata section of
the Dolby frame, together with the results of some validity checks that can readily carried
out on this data. In particular, OmniTek XR reports discontinuities in frame count, invalid
time codes and CRC errors.
the Dolby frame, together with the results of some validity checks that can readily carried
out on this data. In particular, OmniTek XR reports discontinuities in frame count, invalid
time codes and CRC errors.
The range of information transmitted as Dolby-E Metadata is very extensive. However,
the names used for the items follows the naming used in the Dolby specification, so
detailed information about the individual elements shown within any section may obtained
by studying the Dolby specification. The following description just gives brief information
about the different sections of this data.
the names used for the items follows the naming used in the Dolby specification, so
detailed information about the individual elements shown within any section may obtained
by studying the Dolby specification. The following description just gives brief information
about the different sections of this data.
Sync Segment
This is the part of the Dolby-E frame that is used to establish synchronization. It includes
a sync word, together with details of the bit depth and a flag indicating whether bitstream
keys are used in the frame.
This is the part of the Dolby-E frame that is used to establish synchronization. It includes
a sync word, together with details of the bit depth and a flag indicating whether bitstream
keys are used in the frame.
The following table shows the sync word that should be used in the different cases:
Bit Depth
Key Present
Sync Word
16 False 0x078E
True
0x078F
20 False 0x0788E
True
0x0788F
24 False
0x07888E
True
0x07888F