Lumagen Radiance Mini-3D - Manual (Page 13)

Section 2 – Overview
Radiance Mini rev 091211 5
Block Diagram
The function of the Radiance is to act as a video switch, process the selected video source and then output
video in the appropriate format and resolution. Standard definition (SD), enhanced-definition (ED), high-
definition (HD) video inputs, plus a number of PC formats are supported. Video inputs are converted to
progressive video (if necessary) and are then scaled to the video output resolution.
Interlaced video has been in use for more than 50 years and is still the most common video format. It
displays half of the lines of picture information each sixtieth (or fiftieth) of a second. Each half of the image
is called a field and displays either all the even lines, or all the odd lines. So, an entire image, called a
frame, takes a thirtieth (or twenty-fifth) of a second to display on the screen. An “i” suffix on the resolution
specification is used to indicate interlaced formats.
In contrast, progressive video presents each frame as a whole. A “p” suffix on the resolution specification is
used to indicate progressive formats. Converting interlaced video to progressive video is referred to as
“deinterlacing.”
The Radiance is comprised the following major functional sections:
• Video input selection and video decoding
•
Video deinterlacing
• Video filtering and scaling
• Video output of HDMI digital video
The functional blocks are shown below.
HDCP encryption is supported for the HDMI inputs. If the signal is encrypted, the HDMI inputs are
decrypted, processed, scaled and then re-encrypted for output as HDMI. For HDCP encrypted inputs, a
HDCP capable display is required.
If the video input is interlaced, it is first deinterlaced into a progressive format. User enabled noise reduction
algorithms are then applied. Proprietary No-ring™ scaling algorithms are used to scale the resulting
progressive video to the optimal size for the display.
As part of the scaling process, digital filtering is used to enhance the image detail. This enhancement allows
standard definition inputs, such as DVDs, to appear to be much higher resolution. This is especially valuable
when standard-definition sources are viewed on the large screen sizes common in home theaters.
Commands can be sent to the Radiance by infrared remote or via the serial RS232 port. The RS232 port is
used for software updates. Setup is done with the on-screen menu. User functions (e.g. select input) use
direct commands.