Standards

 

Green AV use standards for system Design for both audio and video, and in other contexts based on experience and mathematical calculation.

The Society of Motion Picture and Television Engineers ( SMPTE ) for cinema design 

ANSI / InfoComm 2M- 2010 Standard Guide for Audiovisual Design and Coordination Processes

Image calculation: ANSI/INFOCOMM V202.01:2016 

HDR Glossary 

Arc minute – The angle subtended by 1/60 of one degree, or alternatively, 1/21600 of a circle. Due to the physical structure of the eye and the size and arrangement of photoreceptor cells in the retina, 1 arc minute is the generally accepted limit of human visual acuity.

CEA-861.3 – A standard released by the Consumer Electronics Association (now known as the Consumer Technology Association – CTA) to specify HDR static metadata exchange using InfoFrames and EDID. The HDMI 2.0a and DisplayPort 1.4 speci cations cite CEA-861.3 mechanisms to support HDR. 

D65 – Reference white point for the BT.709, DCI-P3, and BT.2020 color gamuts. D65 corresponds to a color temperature of 6500 K and has coordinates of xW = 0.3127, yW = 0.329 on the CIE chromaticity diagram.

DCI-P3 – Color space speci ed by the Digital Cinema Initiative and standardized in SMPTE 428-1. It covers 45.5% of the CIE color gamut.

Dolby Vision – A proprietary high dynamic range video format developed by Dolby Laboratories for video content creation, distribution, and playback.

Gamma – A video display EOTF characterized by a power law relationship between the on-screen luminance and the input video signal where: Luminance = (Input Signal) gamma

HDR10 – A high dynamic range media pro le de ned by the Consumer Electronics Association for IP, HDMI, or other video delivery sources to incorporate SMPTE ST 2084 EOTF; 4:2:0 chroma subsampling for compressed video; 10 bits per color; ITU-R BT.2020 color gamut; and SMPTE ST 2086, MaxFALL, MaxCLL metadata.

Hybrid Log Gamma (HLG) – A high dynamic range video format jointly developed by the BBC and NHK to be backward compatible with standard dynamic range displays. HLG is not natively compatible with other HDR formats such as HDR10 and Dolby Vision. HLG streamlines live HDR broadcast operations by eliminating the need for additional metadata required by HDR10 and Dolby Vision.

ITU-R BT.709 – A set of parameter values for high de nition television systems for production and international program exchange recommended by the International Telecommunication Union. De ned video parameters include:

• Resolution: 1920x1080, progressive or interlaced
• Color depth: 8 or 10 bits per color
• Frame rate (Hz): 60, 59.94, 50, 30, 29.97, 25, 24, 23.98
• Chroma sampling: 4:4:4 or 4:2:2
• Primary colors and white point coordinates that cover 35.9% of the CIE color gamut:

• Red: xR = 0.640, yR=0.330
• Green: xG = 0.300, yG = 0.600 • Blue: xB = 0.150, yB = 0.060
• White: xW = 0.3127, yW = 0.329 

 

TU-R BT.2020 – A set of parameter values for ultra-high definition television systems for production and international program exchange recommended by the International Telecommunication Union. De ned video parameters include:

• Resolution: 3840x2160 or 7680x4320 
• Color depth: 10 or 12 bits per color 
• Frame rate (Hz): 120, 119.88, 100, 60, 59.94, 50, 30, 29.97, 25, 24, 23.98
• Chroma sampling: 4:4:4, 4:2:2, or 4:2:0
• Primary colors and white point coordinates that cover 75.8% of the CIE color gamut:
• Red: xR = 0.708, yR=0.292
• Green: xG = 0.170, yG = 0.797 • Blue: xB = 0.131, yB = 0.046
• White: xW = 0.3127, yW = 0.329

MaxCLL – Maximum content light level – video stream metadata that indicates the highest luminance value of any pixel in the entire content stream.

MaxFALL – Maximum frame average light level – video stream metadata that indicates the highest average luminance value of any frame in the entire content stream.

Perceptual Quantizer (PQ) – A video display EOTF optimized for high dynamic range with maximum luminance of 10,000 nits. It was initially developed by Dolby Laboratories and has been standardized as SMPTE ST 2084.

Retina Display – A video display whose pixel structure cannot be discerned by someone with normal human visual acuity when viewed at a speci ed distance.

SL-HDR1 – A high dynamic range video streaming system jointly developed by STMicroelectronics, Philips International B.V., CableLabs, and Technicolor R&D France and standardized as ETSI TS 103 433. SL-HDR1 involves deconstruction of HDR video to SDR video plus dynamic, content-dependent metadata. The results of the deconstruction are encoded and transported as a standard HEVC or AVC stream, which can be decoded by HDR-capable receivers and is also backward compatible with SDR receivers.

Transfer Function – The relationship between a system’s output signal and its input signal. The transfer function characterizes system behavior and de nes how the system transforms the input signal into the output signal. A video broadcast system may be characterized by a series of transfer functions:

• OOTF – Opto-Optical Transfer Function, the end-to-end relationship between an image viewed at a video display and the light that was captured by a camera. The OOTF can be further separated into the camera’s transfer function (OETF), signal processing and artistic adjustments performed during production and distribution, and the display’s transfer function (EOTF).

• OETF – Opto-Electronic Transfer Function, the relationship between a camera’s input (captured light) and the camera’s electronic output signal.

• EOTF – Electro-Optic Transfer Function, the relationship between a video display’s input signal and the on-screen luminance generated by the display. 

 

Data Rate Required for Video Signals

Resolution

Frame Rate

Chroma Sampling

Pixel Clock

8-Bit Color

10-Bit Color

1080p / 2K

60 Hz

4:4:4

148.5 MHz

4.46 Gbps

5.57 Gbps

4K

30 Hz

4:4:4

297.00 MHz

8.91 Gbps

11.14 Gbps

4K

60 Hz

4:2:0

594.00 MHz

8.91 Gbps1

11.14 Gbps1

4K

60 Hz

4:4:4

594.00 MHz

17.82 Gbps

22.28 Gbps

 

Bandwidth Capabilities of Current Digital Video Formats

Standard

Bandwidth

Color Sampling

UHD @ 30 Hz

UHD @ 60 Hz

HDMI 1.4a

10.2 Gbps

4:4:4

1 cable, 8-bit

2 cables, 8-bit

4 cables, 10-bit

4 cables, 10-bit

HDMI 2.0

18.0 Gbps

4:4:4

1 cable, 10-bit

1 cable, 8-bit

2 cables, 10-bit

HDMI 2.0

18.0 Gbps

4:2:0

n/a

1 cable, 10-bit

DisplayPort 1.1a

10.8 Gbps

4:4:4

1 cable, 8-bit

2 cables, 8-bit

4 cables, 10-bit

DisplayPort 1.2

21.6 Gbps

4:4:4

1 cable, 10-bit

1 cable, 10-bit

HD-SDI

1.485 Gbps

4:2:2

4 cables, 10-bit

n/a

3G-SDI

2.97 Gbps

4:2:2

n/a

4 cables, 10-bit

 

Connections

Resolutions

Color Sampling

Color Depth Support

Available Products

1 x HDMI 2.0

1 x 4096x2160 @ 60 Hz 1 x 3840x2160 @ 60 Hz

4:4:4

8-bit color

Consumer grade 4K at panel televisions.

More displays and sources expected to be released.

1 x HDMI 2.0

1 x 4096x2160 @ 60 Hz 1 x 3840x2160 @ 60 Hz

4:2:0

10-bit color

No available devices at the time of this writing.

1 x HDMI 1.4a
1 x DisplayPort 1.1a

1 x 4096x2160 @ 30 Hz 1 x 3840x2160 @ 30 Hz

4:4:4

8-bit color

Apple Macbook Pro Computer Graphics Cards

Professional grade 4K Flat Panel Displays from multiple manufacturers

Consumer grade 4K Flat Panel Televisions

1 x DisplayPort 1.2

1 x 3840x2160 @ 60 Hz 1 x 4096x2160 @ 60 Hz

4:4:4

10-bit color

Computer Graphics Cards

Professional grade 4K Flat Panel Displays from multiple manufacturers

Displays from multiple manufacturers

Professional grade 4K Projectors from multiple manufacturers

4 x HDMI 1.4a
4 x DVI
4 x DisplayPort 1.1a

4 x 1920x1080 @ 60 Hz 4 x 2048x2160 @ 60 Hz

4:4:4

10-bit color

REDRAY® Media Player Computer Graphics Cards

Professional grade 4K Flat Panel Displays from multiple manufacturers

Professional grade 4K Projectors from multiple manufacturers

4 x 3G-SDI

4 x 1920x1080 @ 60 Hz 4 x 2048x1080 @ 60 Hz

4:2:2

10-bit color

Broadcast equipment

Professional grade 4K Flat Panel Displays from multiple manufacturers

Professional grade 4K Projectors from multiple manufacturers

2 x DisplayPort 1.1a 2 x HDMI 1.4a

2 x 1920x2160 @ 60 Hz 2 x 2048x2160 @ 60 Hz

4:4:4

8-bit color

Computer Graphics Cards

Professional grade 4K Flat Panel Displays from multiple manufacturers

Professional grade 4K Projectors from multiple manufacturers

The importance of light
Brightness, or more properly luminance is a measurement of the amount of light from a display . Luminance is often used to characterize the reflection from a surface , diffuse surfaces. The luminance indicates how much light will be reflected from the surface from a particular angle. Luminosity is a very important indicator of how light is displayed.
Targets for the luminance depends on the amount of ambient light in the display environment. The reason for this is that the level of ambient light affects the image by lowering the contrast ratio . Higher luminance helps to maintain a good contrast performance in environments with ambient light. Each screen will have enough brightness for viewing environment , where it was used . Here as the starting point in what context the screen to be used. In the case of an auditorium where you can control the ambient light can be used in smaller projectors. Is it a conference room with a lot of natural light from large windows , it may be an idea to look at technologies other than projection.
 
There are several things to be considered when choosing hardware for a project.
Should it run 24/7
What is the heat release must be designed with larger air conditioners and thus more power , in many cases, it pays to look at other, more green technologies have not have as high power consumption .
Is it special demands on the quality of speech output on the audio system .
What betrakningsafstanden and betrakningsvinklen .
To be used camera and it should be broadcast .
How do you want to serve the AV system , that it is easy for employees to use the system and you get the best possible use of investment.
Should I pay cash or is it more attractive to a lease agreement, so the cost is spread over the system's life expectancy.
I deal with that right guaranteed in place so you do not even have to change parts during the guarantee period .

 

 

 

ANSI AVIXA Member HDMI 2,0 4K HDR ultra HD