Home Digital Media Resources

Industry Organizations, Standards, Formats

    by Douglas Dixon

• Standards Organizations
• Digital Media Interface Formats
• Digital Media Networking Formats - DLNA, UPnP
• Digital Media Transmission Formats - Cable, Power Line
• Home A/V Networking Technology - Wireless displays

See also:

Digital Video Editing References  (FireWire / DV)
Wireless Media Resources  (Wireless interface formats)
PC Technology Resources  (PC Interfaces)

Standards Organizations

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Digital Media Interface Formats

Digital Video Display Interfaces

• Consumer-friendly cabling for digital home entertainment systems 
• High-bandwidth uncompressed digital video connections at HDTV resolutions
• See article - Content Protection Technology for Consumer Electronics

DVI (Digital Visual Interface)

• Universal lossless display interface with plug and play connections
• Supports up to HDTV resolutions at fast refresh rates with dual links
• Based on Silicon Image T.M.D.S. interface
• Adopted by Digital Display Working Group (DDWG) - www.ddwg.org
      Lead by Intel, Compaq, Fujitsu, Hewlett Packard, IBM, NEC, Silicon Image.
• DVI 1.0 Specification - 4/2/99 - 76 pp - www.ddwg.org/lib/dvi_10.pdf

HDMI (High-Definition Multimedia Interface)

• General digital interface specification for connecting consumer electronics products
• Uncompressed, all-digital audio/video interface
      plus content protection: High-bandwidth Digital Content Protection (HDCP)
• Standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable
      Quality: Digital video, no analog conversions, softness and ghosting
      Ease-of-use: Combines video and multi-channel audio into single cable
      Intelligence: Two-way communication between source and the DTV
          Enables automatic configuration of best format, one-touch play
      HD Content-Ready: Future Blu-ray HD movies will not be viewable in HD resolutions over analog
• Supports interconnecting multiple sources and sinks (inputs and outputs)
      Uses packet protocol to transmit video, audio, and auxiliary data such as configuration and status
• Standard cable can work at lengths up to 10 meters without repeater
• Works with DVI: Connect with DVI devices through converter cable
      HDMI adds to DVI: Audio (up to 8-channels uncompressed), Smaller connector 
           YUV color space, CEC (Consumer Electronics Control), CEA-861B InfoFrames
• Formats: Transmits all ATSC HDTV video standards
      supports 8-channel, 192kHz, uncompressed digital audio
      and all currently-available compressed formats (such as Dolby Digital and DTS)
• Defined by the HDMI Founders - www.hdmi.org
      Hitachi, Matsushita (Panasonic), Philips, Silicon Image, Sony, Thomson, Toshiba.
• High-Definition Multimedia Interface Specification Version 1.1
      May 20, 2004, 206 pages - www.hdmi.org/download/HDMI_Specification_1.1.pdf

HDMI Versions

• HDMI 1.1: DVD Audio
• HDMI 1.2: One Bit Audio format, SuperAudio CD's DSD (Direct Stream Digital)
      Better support for PCs, including: HDMI Type A connector, native PC RGB or YCbCr CE color space, 
      support future low-voltage (i.e., AC-coupled) sources, such as PCI Express
• HDMI 1.2a: Consumer Electronic Control (CEC) features and command sets
      Updated HDMI Compliance Test Specification (CTS)
      Cable and connector testing and Authorized Testing Center (ATC) submission requirements

HDMI 1.3

• Adds new lossless digital audio formats plus bandwidth for future enhancements
• Higher speed: single-link bandwidth to 340 MHz (10.2 Gbps) for future HD display devices
• Deep Color: 10-bit, 12-bit and 16-bit (RGB or YCbCr) color depths (was 8-bit), over one billion colors
• Broader color space: Adds "x.v.Color" (consumer name for IEC 61966-2-4 xvYCC color standard)
      Display any color viewable by the human eye
• New mini connector: For small portable devices such as HD camcorders and still cameras
• Lip Sync: Automatic audio synching
• New HD lossless compressed digital audio formats: Dolby TrueHD and DTS-HD Master Audio
      Already supports high-bandwidth uncompressed digital audio 
          all currently-available compressed formats (such as Dolby Digital and DTS)

HDMI 1.4 - Announced 5/09, Spec by 6/09

• Ethernet networking - Share bi-directional 100 Mb/sec communication for IP data (new cables)
• 4K x 2K Resolution - High-definition (HD) 4X  1080p, same resolution as many digital theaters
      Includes 3840 x 2160 at 24Hz/25Hz/30Hz, 4096 x 2160 at 24Hz
• Expanded Support For Color Spaces: More accurate life-like colors when connected to digital still camera
      Color spaces designed specifically for digital still cameras: sYCC601, Adobe RGB, AdobeYCC601
• Audio Return Channel: Send audio upstream for processing and playback
• 3D Over HDMI - Common 3D formats and resolutions, input/output, up to dual-stream 1080p resolution
• Micro HDMI Connector: Significantly smaller 19-pin connector for portable devices, 1080p resolutions
      Approximately 50% smaller than existing HDMI Mini Connector
• Automotive Connection System: Designed for in-vehicle HD content distribution
      Designed for  rigors and environmental issues found in automobiles, such as heat, vibration, noise

HDMI Cables

• Standard HDMI Cable (category 1) - Data rates up to 1080i/60 (75 Mhz)
• High Speed HDMI Cable (category 2) - Data rates beyond 1080p (340 Mhz)
      includes Deep Color and all 3D formats of the 1.4 spec
• Standard HDMI Cable with Ethernet - with Ethernet connectivity
• High Speed HDMI Cable with Ethernet - with Ethernet connectivity
• Automotive HDMI Cable - Connect external HDMI-enabled devices to in-vehicle HDMI devices

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Digital Media Networking Formats

Universal Plug and Play (UPnP)

• Simple and robust connectivity between stand-alone devices and PCs from different vendors
      Consumer electronics, intelligent appliances, mobile devices
• 848 members: Computing, printing and networking; Consumer electronics; 
      Home appliances, automation, control and security; Mobile products.
• www.upnp.org

Digital Living Network Alliance (DLNA)

• Open standards and widely available industry specifications
• Enable wired and wireless interoperable network of Personal Computers (PC), 
      Consumer Electronics (CE) and mobile devices in the home 
      enabling a seamless environment for sharing and growing new digital media and content services
• Consumers are acquiring, viewing and managing an increasing variety of digital content 
      on their PCs, consumer electronics products and mobile devices. 
      They want to be able to easily and conveniently enjoy this content using any electronic device, 
      and from any location in their home, and beyond.
• Established 2003 
• More than 250 companies: consumer electronics, computer and mobile device manufacturers, 
•     component and software developers.
• 6/04 - First DLNA Interoperability Guidelines for DLNA Certified products
• 3/06, 10/06 - DLNA Interoperability Guidelines, version 1.5
      Support RTP for A/V streaming, QoS over entire network, AVC (MPEG-4) video, Bluetooth
      More home and mobile devices,  printers
      Link protection for secure transmission of protected digital content
• www.dlna.org

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Digital Media Transmission Formats

Home Networking Technology 

MoCA (Multimedia over Cable Alliance)

• Fastest: theoretical 270 Mbps, actual 135 Mbps
• Low latency rate 5 milliseconds actual usage, vs. 20 to 30 for HomePlug AV and HPNA
• Minimal interference from other TV signals and no interference from household appliances or devices, operation on a protected signal above the 850 MHz spectrum that ensures no interference with cable TV, digital broadcast satellite or other media
• Verizon - 100 Mbps Actiontec router for FiOS TV customers
• www.mocalliance.org

HomePlug Powerline Alliance - Electrical Wiring

• High-speed powerline networking - Most pervasive wiring in the home
• Uses frequencies in the range of 2 to 28 MHz
• HomePlug AV - 2005 - maximum theoretical data rate of up to 200 Mbps, security 128-bit AES
• HomePlug Turbo - 2004 - 85 Mbps 
• HomePlug 1.0 - 2001 - 14 Mbps, security 56-bit DES
• HomePlug Access BPL (Broadband Power Line) - to-the-home broadband access technology
• Command and Control - 9/07 - communications layers (PHY/MAC spec)
      low-speed, very low-cost technology
• Smart Energy - Joint HomePlug Powerline Alliance and ZigBee Alliance
      Wired and wireless communication between utility companies and everyday household devices 
      such as smart thermostats and appliances (home area network (HAN) devices
• 5/09 - ZigBee/HomePlug Smart Energy profile selected by U.S. Department of Energy and the National Institute of Standards and Technology (NIST) as an initial interoperable standard for HAN devices and communications and information model
• www.homeplug.org

HD-PLC - High Definition Power Line Communication

• Uses existing electric power lines for data transmission
• Frequency band between 2 and 28 MHz
• Electrical voltage is big and alternatively slow, while a data signal's voltage is small and alternatively fast
      Waves have different frequencies, no cross interference when combined
• Theoretical maximum data transmission rate is up to 210 Mbps
• Security: Network authentication and AES 128-bit encryption technology
• Products:
      PLC, WiFi bridge and PoE bridge
      PLC-networked AV equipment
      USB-PLC bridge solution for extending the use of USB devices throughout the home
      PLC-based POS system for retail businesses
      LED streetlights incorporating IP security cameras and PLC
      PLC adapters and routers for sharing broadband access in the home
• CEPCA, CE (Consumer Electronics) Power Line Communication Alliance, established May 2005
      www.cepca.org
• HD-PLC Alliance, established September 2007
      www.hd-plc.org
• Panasonic

Home Phoneline Networking Alliance - HomePNA - HPNA 

• Existing copper phone lines for in-home networking 
• Recently added ability to network over coax as well
• International Telecommunications Union, HomePNA 3.0 (G.9954) 
• Data rates of up to 240 Mbps, average data rate of 107 Mbps
• www.hpna.org

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Home A/V Networking Technology 

High Definition Audio-Video Network Alliance (HANA)

• Incorporated October 2005
• Members from IT, content provider, service provider , consumer electronics industry segments.
• Mission to utilize existing standards and technologies to create a design guideline for secure High Definition AV networks that will advance commercial deployment of products and services and will enhance the consumer HD entertainment experience
• Focus initially on IEEE 1394/FireWire
• www.hanaalliance.org

WirelessHD (WiHD)

• Formed in 2006, 40 companies
      Intel, LG, Panasonic, NEC, SAMSUNG, SiBEAM, Sony, Toshiba 
• Next generation wireless digital network interface specification for consumer electronics products.
• Wireless streaming high-definition content between source devices and high-definition displays
• Combine uncompressed high-definition video, multi-channel audio, intelligent format and control data, and Hollywood approved content protection
• Uncompressed HD video, audio and data transmission, scalable to future high-definition A/V formats
• High-speed wireless, multi-gigabit technology in the unlicensed 60 GHz band
• Smart antenna technology to overcome line-of-sight constraints of 60 GHz
• Secure communications, Device control for simple operation of consumer electronics products
• Error protection, framing and timing control techniques for a quality consumer experience
• Architected and optimized for wireless display connectivity,
• First generation high-speed rates up to 4 Gbps at ten meters for CE, PC, and portable devices 
• Core technology theoretical data rates as high as 25 Gbps
• 1/08 - WirelessHD 1.0 Specification
• www.wirelesshd.org

Pulse~LINK - Ultra Wideband (UWB)

• CWave Whole-Home Interactive HD solution 
• Whole-home distribution of interactive HD multimedia content over a hybrid wired/wireless network
• Room-to-room distribution of multiple HDTV streams and multimedia content 
      over both coax and wireless connections simultaneously from the same chipset
• Multiple simultaneous HDTV streams with "Trick Play" (pause, fast forward and rewind capabilities) 
• Data rates more than 400 Mbps
• MAC/Baseband/RF chipset exceeds 1Gbps in UWB communications
• www.pulselink.net

DisplayLink - Networked Displays

• Extended display to multiple monitors -- Real-time video playback across a USB link
• High-performance Hardware Rendering Engine (HRE) network display chips and Virtual Graphics Card (VGC) software that power high-quality, fully interactive 32-bit true-color graphics 
• Adaptive compression algorithm and graphics protocol can also transmit graphics over other standard network interfaces, including wireless USB, Ethernet or Wi-Fi
• www.displaylink.com

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