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HD Player Chapter 7: Soft Edging/Display Overlap
49 Rev. 6.4
Chapter 7: Soft Edging/Display Overlap
The following techniques can be employed to produce high resolution, high brightness displays:
Videowall
The term videowall refers to an image built up by stacking display devices. A Videowall typically uses a complex
digital video processor to split an incoming video source into the multiple outputs sent to the display.
Videowalls offer a very high brightness, high-resolution display in a small physical space. They do, however, have
the negative characteristic that the borders (called mullions) between each display segment are visible and often
distracting.
Single Projector
If space is available in front of, or behind the screen, a single projector system can be used to fill the display with
a single image. The display resolution is limited to the resolution of the projector. Projectors capable of delivering
a large bright image also require expensive and fragile lamps that typically have a limited life.
Introducing Soft Edging
Soft Edging or “Display Overlap” is a technique for generating a single image on a screen when using multiple
projectors. This results in a seamless display that shows no signs of being made up of spliced-together images
from separate projectors.
A soft edged display provides the benefits of both the Videowall and the Single Projector with few of their flaws.
Multiple projection systems allow the designer to utilize smaller and less expensive projectors to display an image
on the same screen area that would otherwise require a single larger and more expensive projector. This technique
achieves greater total pixel resolution and more brightness (lumens), at a lower cost.
Achieving a soft-edged display is a two-step process.
1. Overlap part of the image from each projector with its neighbor in order to ensure a seamless display. A
typical installation would require 5% of the image to be in the overlap.
2. Adjust the video output in the overlap to correct for the “doubling” of light output that occurs in the
overlap region between adjacent projectors. The HD Player utilizes sophisticated digital processing to
implement this brightness adjustment.
The following illustration gives an example of a three projector wide display showing the overlap concept (The
projectors are identified as #1 – Left, #2 - Center and #3 – Right, when viewed from the projection location)
- Preface 3
- Document History 4
- Trademarks 4
- Table of Contents 5
- Main Features 11
- 10 Rev. 6.4 12
- The MS9200P 13
- 12 Rev. 6.4 14
- The MS9100P 15
- The MS9100D 16
- 15 Rev. 6.4 17
- MS9100D (Desktop player) 18
- To start the Media Player 18
- To play a different clip 19
- 18 Rev. 6.4 20
- To Load a Clip 21
- To Play a Clip 22
- The File Menu 22
- The View Menu 22
- Click here to 23
- Output Format 25
- Output Mode 26
- Audio Mode 26
- Genlock Mode 26
- 25 Rev. 6.4 27
- The Playlist 29
- The Clip Properties Dialog 30
- Clip name 31
- Timecode 31
- Stopped 33
- Frame Counter 34
- Current Timecode 34
- Mode Indicators 34
- Transport/Output Controls 35
- Fast Forward/Loop Slider 36
- Confidence Display 36
- The Log Window 37
- The File Information Window 38
- The Status Bar 39
- 38 Rev. 6.4 40
- Video on at startup 41
- Audio on at startup 41
- Enable AV Sync 42
- Base Channel Number 42
- Audio Output Format 42
- Output Standard 42
- Advanced 43
- Click here 44
- 43 Rev. 6.4 45
- Chapter 6: Timecode 46
- Stop At 48
- Play At 49
- Loop Input to Output 49
- Timecode Cable 50
- Videowall 51
- Single Projector 51
- Introducing Soft Edging 51
- 50 Rev. 6.4 52
- 51 Rev. 6.4 53
- 52 Rev. 6.4 54
- 53 Rev. 6.4 55
- 54 Rev. 6.4 56
- 55 Rev. 6.4 57
- Black Correction 58
- 57 Rev. 6.4 59
- Chapter 8: Genlock 60
- Genlock Standalone/Master 61
- Genlock ES-Gen 61
- Genlock Cable 62
- To change a BCS setting: 63
- Return to default 63
- Saturation 64
- 63 Rev. 6.4 65
- 64 Rev. 6.4 66
- To create a new Method 67
- 67 Rev. 6.4 69
- 68 Rev. 6.4 70
- Enter port 71
- RJ45 Pinout 72
- To Run Telnet 73
- Command Structure 73
- Command Reference 74
- OK or ERROR 75
- Media Management Commands 76
- Playlist Commands 77
- 77 Rev. 6.4 79
- 78 Rev. 6.4 80
- 79 Rev. 6.4 81
- Examples 83
- ES 4000 83
- Available Player Commands 84
- Command Action 84
- Chapter 13: Video Outputs 85
- HDSDI: MS9200P 86
- Synchronized playback 87
- 86 Rev. 6.4 88
- 87 Rev. 6.4 89
- 88 Rev. 6.4 90
- 89 Rev. 6.4 91
- 90 Rev. 6.4 92
- An Introductory Note 93
- Ethernet Communication 93
- TCP/IP Addressing 93
- The IP Address 94
- Choosing IP Addresses 95
- The Subnet Mask 96
- Pinging a Device 97
- Example 1: A successful Ping 98
- What is MPEG? 99
- I, B and P frames 100
- Groups Of Pictures - GOP 100
- System Stream 101
- Program Stream 101
- Transport Stream 102
- 101 Rev. 6.4 103
- Primary Video Output 104
- 8 Blue Ground 104
- Secondary Video Output 104
- Digital Video Decoder 105
- Flexible Format Converter 106
- Video Output Formats 106
- System Control Aids 107
- Glossary 108
- HD Player Index 109
- 107 Rev. 6.4 109
- 108 Rev. 6.4 110
- 109 Rev. 6.4 111
- 110 Rev. 6.4 112
- 111 Rev. 6.4 113
- 112 Rev. 6.4 114
- 113 Rev. 6.4 115
- 114 Rev. 6.4 116
- 115 Rev. 6.4 117
- 116 Rev. 6.4 118
- 117 Rev. 6.4 119
- 118 Rev. 6.4 120
- 119 Rev. 6.4 121
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