Christie CP2220 User Manual page 81

Control
3: 3D Sync Input
Mode
4: L/R Display
Reference
5: Frame Rate N:M
6: L/R Display
Sequence
7: 3D Sync Polarity
8: Dark Time
9: Output Delay
10: Phase Delay
FRAME RATE N:M NOTES
These N:M ratios define how many frames to display per number of frames that
form one complete image. For all 3D use, the denominator is 2, indicating that 2
frames (left and right) are combined into every complete display frame. For non-3D,
it is 1 frame. Set it to the highest rate possible without image cropping.
CP2220 User Manual
020-100420-08 Rev.1 (5-2014)
Description
Specifies whether a specific frame of input data has left eye or right eye data.
Use GPI (polarity = true) or (polarity = inverted): Select if you are using a single 3D signal requiring a
separate 3D stereo sync input at the GPIO.
Use Selected Input Port (polarity = true) or (polarity = inverted): Select if your 3D source provides
separate left and right data via 2 cables at the HD-SDI A and HD-SDI B SMPTE ports. This assumes
the 3D stereo sync signal is included with the image data inputs rather than supplied separately at the
GPIO port.
Use White Line Code (true and inverted): Select only if using a single 3D input signal in which an
embedded white line at the bottom of each frame identifies left vs. right, and an additional separate 3D
stereo sync input at the GPIO port is not present. The bottom row of the left-eye sub-field should be
pure white for the left-most 25% of the pixel row and pure black for the remainder of the row. The
bottom row of the right-eye sub-field should be pure white for the left-most 75% of the pixel row and
pure black for the remainder of the row.
Use Line Interleave: For use with 3D source data only. When specified, the TI system will de-interleave
each line into the left image or right image in memory as specified. Line interleave can be used with PsF
3D data (left and right data for one field, then left and right data for second field).
Specifies which frame of eye data to display during a specific display frame. This signal is referenced to
the display frame rate which is specified by the Frame Rate N:M.
Sets how many frames to display per number of frames that form one complete image. Increase the
display frame rate to reduce flicker from your source(s).
Defines the frame order (L-R or R-L) required for 3D perspective. This option only has meaning when
the Frame Rate factor M is equal to 2. For this case, 2 input frames of data are required to constitute a
complete frame of image data. This parameter tells the system which frames go together to make a
complete image. NOTE: When using Line Interleave as the 3D Sync Input Mode, ensure that Left
(L1R1 L2R2) is selected.
Keeps 3D stereo sync output the same as input (true) or reversed (inverted).
True: 3D L/R sync output from GPO will match L/R sync input.
Inverted: 3D L/R sync output from GPO will be the opposite of sync input (left = right, right = left).
Creates a blank time interval between left and right frames to allow for LCD shutter glasses, Z screen,
or rotating 3D wheel to synchronize the output. See Dark Time and Output Delay Notes below. Values
between 0 and 65535 are accepted. Tap the Launch Dialog button to enter the dark time value.
The non-image time in Microseconds (μ). Offset 3D stereo sync output in relation to dark time interval.
Acceptable values are between -32768 and 32767 are accepted where a positive offset = delay and
negative offset = start early. Tap Launch Dialog to enter the output delay value.
The degree of reference between the left and right sync output. Values between -180 and 180 are
accepted. Tap Launch Dialog to enter the phase delay value.
Section 6: Cinema Projector Menus
EXAMPLE
4:2 = 4 frames displayed
2 frames per image
6-21