Proposals may be either full solutions or may consist simply of possible tools or improvements that might be used to achieve the stated requirements.
The advanced display stream coding system intends to meet these objectives:
The advanced display stream coding system will have the following properties:
Download the CfT]]>
NEWARK, CA – December 16, 2014 – The Video Electronics Standards Association (VESA®), developer of the DisplayPort™ standard created as the ultimate digital display interface, today reported that DisplayPort adoption, VESA membership and DisplayPort-related specification development have all increased over the past year. This points to the growing demand for DisplayPort and related standards, fueled by displays with 4K and higher resolution, as well as smaller devices with more flexible connectivity.
DisplayPort device certification grew to 1,395 devices to date in 2014, up from 805 devices at the beginning of the year. In 2014, VESA added 13 new member companies for a total of 224 members. Also during this past year, VESA released several DisplayPort-related standards, including DisplayPort 1.3, DisplayPort Alt Mode on USB Type-C, DockPort and Display Stream Compression.
“DisplayPort was developed as a PC to monitor interface, and those markets are where it is currently seeing great success. DisplayPort penetration into PCs is expected to increase over 26 percent annually through 2018. In addition, LCD PC monitor penetration is expected to grow at 56 percent per year,” said Brian O’Rourke, senior principal analyst at IHS. “DisplayPort benefits from its high throughput, which can easily accommodate HD video bandwidths, as well as its integration into PC chipsets from all major vendors.”
“Momentum for DisplayPort is picking up at a steady clip, thanks to a number of emerging technology applications that require the degree of flexibility and performance that the DisplayPort standard enables,” said VESA board of directors chair Alan Kobayashi, fellow and executive R&D management for DisplayPort Group at MegaChips Technology America. “We currently count among our partners more than 200 of the world’s largest semiconductor and electronics companies, who support the DisplayPort standard because they recognize the advantages it affords compared to older standards such as DVI and VGA, as well as HDMI, for advanced products such as forthcoming 8K video displays.”
DisplayPort Roots Remain Strong
Originally developed by the PC industry through VESA, DisplayPort quickly became the next-generation video/audio interface for desktop and portable computer systems. Highly extensible and royalty-free, the standard offers the highest display performance available, as well as unique capabilities such as multiple monitor support. Initial adoption by system OEMs has been driven by ease of integration into chips designed for computers, tablets, phones and displays.
New DisplayPort Developments
While originally intended to be used with its own specified connector, the flexibility and extensibility of DisplayPort has taken it in new directions. Similar to USB, DisplayPort is based on a data packet structure, and has the ability to be easily transported across different connection types and even with other data. This packetization is also what makes it flexible while being backward compatible, and allows it to support various format converters, including DisplayPort to VGA, DVI and HMDI adaptors.
The Thunderbolt™ standard developed by Apple and Intel, as well as the VESA DockPort™ standard, utilizes DisplayPort protocol to transport display and audio data. In 2015, products will be launched using the new USB Type-C connector that also support DisplayPort over this connector, using the DisplayPort Alt Mode standard published by VESA earlier this year. In addition, the DisplayPort protocol is supported by the WiGig standard, unveiled last year by the Wi-Fi Alliance.
On another front, Embedded DisplayPort (eDP) is becoming the embedded display interface of choice for very high-resolution displays in all-in-one PCs, notebooks and tablets. In early 2015, VESA will release eDP version 1.4a, which includes support for 5K x 3K resolution, borrowing from DisplayPort version 1.3.
eDP 1.4a also supports VESA’s new Display Stream Compression (DSC) standard, released in April 2014. DSC was defined in collaboration with the MIPI Alliance and is optimized for portable system embedded display applications. VESA is currently beginning development on a similar standard for displays requiring a higher compression rate that is also intended for industry-wide use in other display interface standards.
Another key development announced earlier this year is the addition of AdaptiveSync to the DisplayPort standard. AdaptiveSync enhances gaming action and video playback through active frame rate control, providing smoother and better-quality images. It also allows seamless reduction in the display refresh rate, lowering system power and extending battery life.
DisplayPort at CES
At CES 2015 in Las Vegas, VESA will feature multiple demonstrations that illustrate the power and flexibility of DisplayPort and related standards. These include:
More information about these demos can be found at http://www.vesa.org/news-events/press-kits/.
To view these demos and learn more about DisplayPort, please visit VESA at CES, January 6-9, 2015, Las Vegas Convention Center, South Hall – 1, Booth 20624. More information on DisplayPort is also available at http://www.displayport.org/.]]>
Adv-DSC is planned to target applications that require a lower bits per pixel (bpp) compressed bit rate than DSC v1.1, i.e. significantly less than 8bpp, while still providing visually lossless subjective coding quality at least as good as DSC v1.1. In exchange for such improved compression, Adv-DSC will require more complex encoders and decoders than DSC v1.1.
The VESA DSC Task Group seeks input from other standardization bodies and potential users of Adv-DSC regarding their specific applications of and requirements for a new coding system standard.
This Call for Requirements seeks specific requirements for a new coding system (Adv-DSC) that will target a lower bpp compressed rate than DSC v1.1 with greater complexity than DSC v1.1 and much less complexity than JCT-VC’s HEVC (High-Efficiency Video Coding) with Screen Content Coding Extensions. Responses should indicate the applications envisioned for Adv-DSC, and specific requirements including:
Please include other relevant requirements or flexible control of the coding system not specifically mentioned above.
Similar to DSC v1.1, VESA’s fundamental system goals are:
Typically expected transport applications include:
Picture quality assessment will rely on industry standards in display viewing and subjective evaluation defined by ISO 9241-303 and ISO/IEC DIS 29170-2, respectively, as well as other proprietary subjective evaluation techniques with either static or scrolling pictures and video clips. Test content for evaluating subjective quality is expected to include images or video with challenging text and graphics, continuous tone images and synthesized test materials.
VESA’s standardization process order is:
Please submit requirements to VESA before December 8, 2014, 17:00 US Pacific Standard Time to the VESA Moderator at firstname.lastname@example.org.
Questions regarding this Call for Requirements can be sent to the VESA Moderator at email@example.com and Mr. Dale Stolitzka, Task Group Chairman, at firstname.lastname@example.org.
[i] DSC v1.1 compresses displays streams in real-time at ≥8bpp bit rate for RGB and YCbCr 4:4:4 input, up to 12 bits/component. Subjective testing results are available to the VESA membership.]]>
NEWARK, CA (21 October 2014) – The Video Electronics Standards Association (VESA®) will offer a free, comprehensive half-day workshop covering the capabilities, technical background and compliance test plans for DisplayPort 1.3 and DisplayPort Alternate Mode (‘Alt Mode’) on USB Type-C Connector. Announced last month, these two DisplayPort standards significantly expand the capabilities and user benefits for the widely used audio/video (A/V) interface.
The DisplayPort Alt Mode on USB Type-C Standard combines DisplayPort A/V data, SuperSpeed USB data and 100W of power onto a single cable and connector with the convenience of reversible plug orientation and cable direction. DisplayPort 1.3 increases the maximum transport rate to 32.4 Gbit/sec, enabling a single DisplayPort cable to drive multiple 4K displays, 4K at 120Hz or 5K displays. These new capabilities and benefits enable many new use cases for computers, tablets, smartphones, displays and docking stations, while maintaining compatibility with VGA, DVI and HDMI 2.0 through inexpensive adapters.
Co-sponsored by VESA and Allion Test Labs, the free half-day workshop will occur:
When: Thursday November 13, 2014 from 1:00 PM to 4:30 PM CST
Where: The Westin Taipei
133 Nanjing East Road, Section 3
Taipei 104 Taiwan
Workshop attendees will have the opportunity to meet and interact with DisplayPort experts face-to-face and learn about the resources available to VESA members. Designed for managers, engineers and program administrators, the Workshop agenda will include the following topics:
The Workshop is FREE and open to VESA members and non-members. A detailed agenda will be emailed to each registrant before the Workshop date.
Interested parties can Register Online to attend the Workshop.
For more information on VESA, please visit http://www.vesa.org/.
For more information about DisplayPort 1.3 and the DisplayPort Alternate Mode for the USB Type-C Standard, please visit http://www.displayport.org.]]>
NEWARK, CA (22 September 2014) – The Video Electronics Standards Association (VESA®), working in liaison with the USB 3.0 Promoter Group, today announced the publication of the DisplayPort Alternate Mode (“Alt Mode”) on USB Type-C Standard. Using the DisplayPort Alt Mode, a USB Type-C connector and cable can deliver full DisplayPort audio/video (A/V) performance, driving monitor resolutions of 4K and beyond, SuperSpeed USB (USB 3.1) data and up to 100 watts of power–over a single cable. The DisplayPort Alt Mode can also drive adaptors that support the huge installed base of existing DisplayPort, HDMI, DVI, and VGA displays.
VESA utilized the Alternate Mode functional extension of the USB Type-C specification in the development of this new Standard. The DisplayPort Alt Mode repurposes some or all of the four existing SuperSpeed USB lanes to deliver full DisplayPort performance, and uses other signaling available in the USB Type-C connector for DisplayPort’s AUX channel and HPD (Hot Plug Detection) function. This enables computers, tablets, smartphones, displays, and docking stations to implement the new USB Type-C connector at both ends while using the DisplayPort Standard over USB Type-C to transmit high-resolution A/V along with USB data and power.
Devices supporting DisplayPort Alt Mode on a USB Type-C connector can also connect to an existing DisplayPort device using a reversible USB Type-C to DisplayPort converter cable. Video source devices that support DisplayPort Alt Mode on a USB Type-C connector can use an appropriate adaptor to drive an HDMI, DVI or VGA display. All adaptors and converter cables will comply with all USB Type-C characteristics, including reversible plug orientation and cable direction.
“The USB Type-C specification was developed to provide consumers with a robust connector for everything from mobile devices to PCs, and when combined with SuperSpeed USB 10 Gbps and USB Power Delivery, it truly enables a single cable solution for the market,” said Jeff Ravencraft, USB-IF President and COO. “The USB-IF is also in the process of developing joint port identification guidelines. We’re working with VESA to ensure consumers can recognize when DisplayPort Alt Mode is supported on USB Type-C devices.”
Like USB, DisplayPort uses a packetized data structure and differential AC-Coupled signal “lanes” that carry high speed data with an embedded clock. This allows the same electrical circuits and cables to carry either SuperSpeed USB data, at up to 10 Gbps per lane, or DisplayPort, at up to 8.1 Gbps per lane, as defined in the new DisplayPort 1.3 Standard. Early implementations of DisplayPort Alt Mode USB Type-C devices will likely use existing DisplayPort 1.2a capabilities that support up to 5.4 Gbps per lane. Using 5.4 Gbps across all four high-speed lanes will support up to 4K (4096 x 2160) display resolutions at a 60Hz frame rate with up to 30-bit color.
By leveraging USB Type-C’s flexibility, the DisplayPort Alt Mode can choose to transmit on just one or two of the four available lanes, so that the other two lanes can be used for SuperSpeed USB data at the same time. In a docking station connection, for example, the use of two lanes for DisplayPort at 8.1 Gbps per lane would allow simultaneous transfer of SuperSpeed USB data (up to 10 Gbps in each direction) while also supporting a 4K UHD (3840 x 2160) DisplayPort monitor. The dock can also be configured with DisplayPort protocol converters to support HDMI, VGA and/or DVI monitors. When using all four lanes for DisplayPort Alt Mode, which could drive a monitor with up to 5K (5120 x 2880) resolution, USB 2.0 data can still be carried across the USB Type-C connection using separate pins dedicated for that function.
“DisplayPort has played a vital role in advancing display performance and connectivity for platforms that are increasingly integrated and compact,” said Craig Wiley, Senior Director of Marketing at Parade Technologies, VESA Board member, and VESA Marketing Task Group Chair. “In addition to the dedicated DisplayPort connector, the DisplayPort Standard has become an important ingredient in other wired interfaces, such as ThunderBolt™, DockPort™, MyDP™, and Embedded DisplayPort™. The opportunity to utilize the USB Type-C specification to develop the DisplayPort Alternate Mode helps further VESA’s vision of common-place high performance video interfaces.”
For more information on VESA, please visit http://www.vesa.org/.
For more information about DisplayPort and the DisplayPort Alternate Mode for the USB Type-C specification, please visit http://www.displayport.org. For a presentation visit http://www.displayport.org/news-room/dp-related-presentations/ For a list of FAQs click here.
For more information on the USB Implementers Forum (USB-IF), or the USB Type-C specification, please visit www.usb.org.]]>
Newark, CA (15 September 2014) – The Video Electronics Standards Association (VESA®) announced the release of the DisplayPort 1.3 audio / video (A/V) standard. An update to the widely used DisplayPort 1.2a standard, this latest version increases the maximum link bandwidth to 32.4 Gbps, with each of four lanes running at a link rate of 8.1 Gbps/lane—a 50% increase from the previous version of the DisplayPort standard. Allowing for transport overhead, DisplayPort’s 32.4 Gbps combined link rate delivers 25.92 Gbps of uncompressed video data.
The increased bandwidth enables higher resolution monitors, including recently announced 5K monitors (with pixel resolutions of 5120 x 2880) using a single DisplayPort cable, without the use of compression. It will also enable higher resolutions when driving multiple monitors through a single connection using DisplayPort’s Multi-Stream feature, such as the use of two 4K UHD monitors, each with a pixel resolution of 3840 x 2160, when using VESA Coordinated Video Timing.
DisplayPort 1.3 continues to support video conversion to VGA, DVI and HDMI. DisplayPort 1.3 adds support for HDCP 2.2 and HDMI 2.0 with CEC (Consumer Electronics Control), which enhances DisplayPort’s utility for television applications, including 4K video with copy protection. The new standard adds support for the 4:2:0 pixel structure, a video format commonly used on consumer digital television interfaces, which enables support for future 8K x 4K displays.
DisplayPort 1.3 also enhances DisplayPort’s value for multi-function interfaces that combine data transport, A/V transport and other capabilities on a single cable. It further refines protocols that enable DisplayPort to share a single cable with other data types. With its higher 8.1 Gbps per-lane link rate, DisplayPort 1.3 can support a single UHD monitor with 60Hz refresh and 24-bit color over two lanes, while assigning the remaining two lanes to increase capacity for alternate data types, such as SuperSpeed USB data as allowed in DockPort™. DisplayPort is the A/V transport standard used by DockPort, Thunderbolt™ and other wired and wireless multi-function interface standards.
“While becoming a mainstream video standard, DisplayPort continues to be at the cutting edge of A/V transport,” said VESA Board of Directors Chair Alan Kobayashi, Fellow & Executive R&D Management for DisplayPort Group at MegaChips Technology America. “These new enhancements to DisplayPort will facilitate both higher resolution displays, as well as easier integration of DisplayPort into multi-protocol data transports, which will satisfy consumer’s desire for simplicity and ease-of-use.”
The DisplayPort standard is offered to VESA members without any license fee. For more information about DisplayPort, please visit http://www.displayport.org or connect with us on YouTube. For a presentation see http://www.displayport.org/news-room/dp-related-presentations/ For a list of FAQs click here.]]>
NEWARK, CA (3 June 2014) – The Video Electronics Standards Association (VESA®) today announced the release of the DockPort standard. Developed by several VESA member companies, DockPort is an optional extension of the DisplayPort standard that will allow USB 3.1 data and DC power for battery charging to be carried over a single DisplayPort connector and cable that also carries high-resolution audio/video (A/V) data.
This new extension of the DisplayPort standard is fully backward compatible with all existing DisplayPort devices. When a DockPort-enabled DisplayPort source—such as a computer or tablet—is connected with a DockPort-enabled DisplayPort sink—such as a display monitor or docking station—A/V plus USB data and power will be transferred over a common cable through a single connector. If either the source or sink device is not a DockPort-enabled, then source and sink will recognize only the DisplayPort A/V data stream.
“As computing platforms become increasingly mobile, it becomes necessary to reduce the number of external connectors,” explained Steve Belt, Corporate Vice President – Strategic Alliances & Solutions Enablement AMD, a VESA member company. “With DockPort, VESA has developed a technology standard that enhances elegant docking designs, reduces mobile form factors, and enriches the user experience with streamlined, one-cable access to a wide range of external displays, peripherals and storage.”
DockPort is the first royalty-free industry standard that combines these three essential interface functions into a single connector. VESA first revealed its intention to develop this standard at the 2014 International Consumer Electrics Show. It anticipates that several vendors will demonstrate DockPort-enabled DisplayPort systems at Computex Taiwan, which begins today.
“Until today, most mobile computing platforms required three separate interfaces to support power charging, data transmission and external video,” said Chris Griffith, Business Development Manager for Consumer and Computing Interface at Texas Instruments, a VESA member company. “With DockPort, VESA has elegantly merged this ungainly tangle of wires into a single, sleek connector, combining power charging with the industry’s most popular data transport—USB—and the industry’s highest-speed A/V transport—DisplayPort. DockPort can reduce system implementation cost as designers can reduce external connectors and simplify docking implementations.”
VESA is developing a compliance test protocol to certify systems that meet the DockPort standard. Systems that satisfy this test protocol will be permitted to display VESA’s new DockPort logo on their packaging as a guide for consumers seeking this capability.
“The new DockPort standard demonstrates the enormous adaptability of the DisplayPort standard,” according to VESA Board Chair Alan Kobayashi, Fellow & Executive R&D Management for DisplayPort Group at MegaChips Technology America. “On the one hand, DisplayPort is a flexible A/V transport protocol that easily coexists with other protocols, like USB—it plays nicely with others. On the other hand, DisplayPort is also a robust and proven connector design whose electro-mechanical properties can accommodate data and power over a common passive copper cable and interface.”
The DockPort standard is offered to VESA members without any license fee. For more information about DisplayPort, please visit http://www.displayport.org or connect with us on YouTube. To see VESA’s official DockPort-enabled DisplayPort consumer logo, please visit http://www.vesa.org/wp-content/uploads/2014/06/DockPort_Logo.jpg]]>
NEWARK, CA (27 May 2014) – The Video Electronics Standards Association (VESA®) today announced the election of new Board of Directors leadership. Alan Kobayashi of MegaChips has been elected Board Chair; Syed Athar Hussain has been re-elected Vice Chair; and Richard Hubbard of Texas Instruments has been elected Secretary/Treasurer. The new leadership slate will serve one-year terms of office.
Alan Kobayashi, VESA’s new Board Chair, is Fellow & Executive R&D Management for DisplayPort Group at MegaChips Technology America. Based in San Jose, CA, Mr. Kobayashi has served in a variety of senior corporate technology roles, and he has been an author of VESA’s DisplayPort Standard and served as Chair of the DisplayPort Task Group, the Leader of the organization’s PHY/Link Layer Compliance Sub-groups, and as a VESA Board member. Mr. Kobayashi holds several dozen patents in the area of A/V transport and display.
“VESA’s work developing standards and establishing compliance test protocols is of strategic importance to the entire video display ecosystem,” explained Alan Kobayashi. “I hope to help guide the organization as we continue to enhance our existing, widely adopted standards, while also developing solutions for the industry’s emerging video challenges.
Re-elected as Vice Chair of the VESA Board, Syed Athar Hussain is a Display Domain Fellow at AMD. Syed is a significant contributor to a variety of VESA standards
Richard Hubbard, VESA’s new Board Secretary / Treasurer, has more than 12 years of experience as a senior video technologist at Texas Instruments, where he has responsibility for video standard implementation, compliance, strategy and new product definition. He has also served as TI’s designated representative to other global standards organizations.
“Our new Board officers represent the deep technical depth and corporate breadth of the VESA organization, ”said Bill Lempesis, VESA Executive Director. “As we continue to develop important enhancements to our standards to support 4K UHD video, low power consumption, and broad interoperability, we will rely on the experience and insight of our volunteer Board to guide the development of VESA.”
VESA represent more than 200 companies involved in video technology. Corporate members include AMD, Apple, Broadcom, Cisco, Dell, Google, Hewlett-Packard, Intel, Lenovo, LG Electronics, MediaTek, Microsoft, Mitsubishi, NVIDIA, Panasonic, Samsung, Sharp, Sony, STMicroelectronics, Texas Instruments, Toshiba and dozens of other global technology leaders.]]>
NEWARK, CA (12 May 2014) – The Video Electronics Standards Association (VESA®) today announced the addition of ‘Adaptive-Sync’ to its popular DisplayPort™ 1.2a video interface standard. This technology delivers several important capabilities to computer users: Adaptive-Sync provides smoother, tear-free images for gaming and judder-free video playback. It also significantly reduces power consumption for static desktop content and low frame rate video.
Computer monitors normally refresh their displays at a fixed frame rate. In gaming applications, a computer’s CPU or GPU output frame rate will vary according to the rendering complexity of the image. If a display’s refresh rate and a computer’s render rate are not synchronized, visual artifacts—tearing or stuttering—can be seen by the user. DisplayPort Adaptive-Sync enables the display to dynamically match a GPU’s rendering rate, on a frame-by-frame basis, to produce a smoother, low latency, gaming experience.
In applications where the display content is static—such as surfing the web, reading email, or viewing a slide presentation—DisplayPort Adaptive-Sync allows the display refresh rate to be reduced seamlessly, lowering system power and extending battery life.
During the playback of lower frame rate video content, Adaptive-Sync allows the source to optimize transport of the video format leveraging OS and DisplayPort interfaces. In addition to providing smoother video playback, the lower frame rate enabled by Adaptive-Sync also reduces power demand, extending battery life.
“DisplayPort Adaptive-Sync enables a new approach in display refresh technology, ” said Syed Athar Hussain, Display Domain Architect, AMD and VESA Board Vice Chairman. “Instead of updating a monitor at a constant rate, Adaptive-Sync enables technologies that match the display update rate to the user’s content, enabling power efficient transport over the display link and a fluid, low-latency visual experience.”
Adaptive-Sync is a proven and widely adopted technology. The technology has been a standard component of VESA’s embedded DisplayPort (eDP™) specification since its initial rollout in 2009. As a result, Adaptive-Sync technology is already incorporated into many of the building block components for displays that rely on eDP for internal video signaling. Newly introduced to the DisplayPort 1.2a specification for external displays, this technology is now formally known as DisplayPort Adaptive-Sync.
“VESA is constantly evaluating new methods and technologies that add value to both the end user and our OEM member companies. Adaptive-Sync delivers clearly visible advantages to the user for gaming and live video, and contributes to the development of sleeker mobile system designs by reducing battery power requirements, ”said Bill Lempesis, VESA Executive Director. “VESA has developed a test specification to certify Adaptive-Sync compliance. Systems that pass Adaptive-Sync compliance testing will be allowed to feature the official Adaptive-Sync logo on their packaging, informing consumers which DisplayPort-certified displays and video sources offer Adaptive-Sync.”
Implementation of DisplayPort Adaptive-Sync is offered to VESA members without any license fee.
For more information about DisplayPort, please visit http://www.displayport.org or connect with us on YouTube.]]>
NEWARK, CA (April 22, 2014) – The Video Electronics Standards Association (VESA®), working in liaison with the MIPI® Alliance, announce the finalization and availability of the Display Stream Compression (DSC) Standard, version 1.0.
VESA developed the DSC standard as an industry-wide compression standard for video interfaces, offering visually lossless performance and low latency. DSC has been adopted into VESA’s embedded DisplayPort (eDP™) v1.4 and into MIPI Display Serial Interface (DSI) Specification v1.2, which are used for embedded display interfaces within mobile systems, including smartphones, tablets and laptops. It is anticipated that the DSC standard will also be used for external display interfaces to computer monitors and televisions.
Increasing display resolution and higher refresh rates present challenges for small-display mobile devices and laptops, as well as large external displays. As display resolutions increase, the interface payload capacity must increase either with more power-consuming bandwidth, video data compression, or both. Displays going beyond 4K resolutions will push the video data rate beyond the current limits of the interface standards. For example, standard 1080p displays require a video data rate of 3.5 gigabits/sec; 4K displays at 60Hz require 14 gigabits/sec; and future 8K displays will require over 50 gigabits/sec. VESA’s DSC standard version 1.0 enables up to 66 percent data rate reduction, extending battery life in mobile systems and laptops, while simplifying the electrical interface requirements for future 4K and 8K displays.
“VESA recognized the need for display interface compression in mobile devices to extend battery life without compromising visual quality,” said Dale Stolitzka, VESA Display Stream Compression Task Group Chairman and member of Samsung Display America Laboratory. “In addition, on-going development of DisplayPort standards, which includes 8K resolution support, foresaw the need for compression because of inherent limits in the existing display interface cables. VESA realized that compression was becoming a common need in the industry, and that a standard compression coding system could meet these common display interface needs.”
“We are pleased to have contributed to the development of the DSC standard through our liaison agreement with VESA,” said Joel Huloux, Chairman of the Board, MIPI Alliance. “We came to the same conclusion, regarding the need for a video interface compression standard, and realized that both organizations and the industry would benefit through this collaborative effort. DSC enables a single codec for system chips that have multiple interfaces.”
The VESA DSC Task Group, in collaboration with the MIPI Alliance Display Working Group, co-defined requirements for a high quality compression specification that meets the needs of today’s varied display usage, which includes a wide range of image types from still graphics and text overlaps, to photography and video. The new coding system also addresses usage on a wide variety of display types, sizes and viewing conditions.
Unlike more complex compression algorithms, such as MPEG, the DSC standard uses a less complex algorithm that provides a lower compression rate, and consumes fewer system resources including power. DSC provides low latency, which is important for interactive systems. Through extensive subjective testing of the standard, DSC is shown to deliver visibly lossless performance for graphics, text, images and video. The DSC encoding algorithm is based on delta pulse code modulation (DPCM), an Indexed Color History (ICH), an entropy encoder and a rate buffer that guarantees video data throughput for any possible display content.
The DSC standard is available for free to VESA members and for $350 for non-members. For additional technical information on DSC, please see the “VESA Display Stream Compression” white paper at http://www.vesa.org/wp-content/uploads/2014/04/VESA_DSC-ETP200.pdf.
VESA eDP v1.4 and MIPI DSI v1.2 are available to the members of the respective organizations.
For more information about DisplayPort, please visit http://www.displayport.org or connect with us on YouTube.
For more information about MIPI, please visit www.mipi.org. For more information about MIPI DSI, please visit http://www.mipi.org/specifications/display-interface.
The Video Electronics Standards Association (VESA) is an international, non-profit standards association representing a global network of more than 200 hardware, software, computer, display and component manufacturers committed to developing and promoting the electronics industry. VESA has an established 24-year track record of creating and supporting simple, universal and cross-product solutions for today’s video and electronics industry. The association’s standards include DisplayPort™, the industry replacement for DVI, LVDS and VGA. DisplayPort utilizes a state-of-the-art digital protocol and provides an expandable foundation to enable astonishing digital display experiences. For more information about VESA, visit www.vesa.org.
About MIPI Alliance
MIPI Alliance (MIPI) develops interface specifications for mobile and mobile-influenced industries. Founded in 2003, the organization has more than 250 member companies worldwide, more than 15 active working groups, and has delivered more than 45 specifications within the mobile ecosystem in the last decade. Members of the organization include handset manufacturers, device OEMs, software providers, semiconductor companies, application processor developers, IP tool providers, test and test equipment companies, as well as camera, tablet and laptop manufacturers. For more information, please visit www.mipi.org.
VESA®, DisplayPort™ and eDP™ are trademarks, service marks, registered trademarks, and/or registered service marks owned by VESA. MIPI®, M-PHY® and UniProSM are trademarks, service marks, registered trademarks, and/or registered service marks owned by MIPI Alliance. All other trademarks, service marks, registered trademarks, and registered service marks are the property of their respective owners.]]>