The DBox is a DVB satellite and cable digital television integrated receiver decoder ( set-top box ). They were distributed widely for use with Pay television channels. It was commissioned by the Kirch group's DF1, an early German provider of digital television that later merged with Premiere . The hardware was developed and produced by Nokia though later also produced by Philips and Sagem under license.
24-478: (Redirected from Dbox ) D-Box (variously capitalised and punctuated) may refer to: D-BOX Technologies , a Canadian company which produces motion simulation systems DBox or DBox 2 , German digital television decoders by Nokia D-Box drift assist system for RC cars by Hobby Products International dbox, an email storage format used by Dovecot (software) D-box (also D'box and D box, short for "destruction box"),
48-458: A consensus is reached to proceed to the next stage, the draft becomes a Draft International Standard (DIS) and is sent for another ballot. After a review and comments issued by NBs and a resolution of comments in the working group, a Final Draft International Standard (FDIS) is typically issued for a final approval ballot. The final approval ballot is voted on by National Bodies, with no technical changes allowed (a yes/no approval ballot). If approved,
72-562: A mode intended for internal development. It is then possible to take a backup copy of the original operating system (including vital micro-code images for the MPEG decoder chipset ) and flash an image based on Linux to the device. In addition to the Linux kernel and drivers, a significant amount of code is needed to allow the DBox2 to function as a digital receiver. This code is all maintained under
96-569: A restructuring process within SC 29 , in which "some of the subgroups of WG 11 (MPEG) [became] distinct MPEG working groups (WGs) and advisory groups (AGs)" in July 2020. Prof. Jörn Ostermann of University of Hannover was appointed as Acting Convenor of SC 29/WG 11 during the restructuring period and was then appointed Convenor of SC 29's Advisory Group 2, which coordinates MPEG overall technical activities. The MPEG structure that replaced
120-475: A set of tools that are available, and Levels define the range of appropriate values for the properties associated with them. Some of the approved MPEG standards were revised by later amendments and/or new editions. The primary early MPEG compression formats and related standards include: MPEG-4 AVC was chosen as the video compression scheme for over-the-air television broadcasting in Brazil (ISDB-TB), based on
144-463: A single open-source project - TuxBox. There is, however, a choice of user-interfaces that can be used, the most popular being Neutrino and Enigma. Enigma is also used on the Dreambox . The DBox2 does not have a hard disk or other internal storage. Modules have however become available for attaching IDE hard drives and SATA hard drives and MMC and SD flash memory cards . Support for these
168-404: A structure within certain proteins, such as cyclins , involved in the cell cycle D-box, a construction feature in the leading edge of some airplane wings, from the spar forward, which provides strength and minimizes twisting. D-box, a linear component of the bricklayer function Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
192-402: Is a joint group of video coding experts from ITU-T Study Group 16 (VCEG) and ISO/IEC JTC 1/SC 29/WG 11 (MPEG) created in 2017, which was later audited by ATR-M audio group, after an exploration phase that began in 2015. JVET developed Versatile Video Coding (VVC, MPEG-I Part 3, ITU-T H.266), completed in July 2020, which further reduces the data rate for video coding by about 50%, as compared to
216-812: Is included in some software distributions. MPEG The Moving Picture Experts Group ( MPEG ) is an alliance of working groups established jointly by ISO and IEC that sets standards for media coding, including compression coding of audio , video , graphics, and genomic data; and transmission and file formats for various applications. Together with JPEG , MPEG is organized under ISO/IEC JTC 1 / SC 29 – Coding of audio, picture, multimedia and hypermedia information (ISO/IEC Joint Technical Committee 1, Subcommittee 29). MPEG formats are used in various multimedia systems. The most well known older MPEG media formats typically use MPEG-1 , MPEG-2 , and MPEG-4 AVC media coding and MPEG-2 systems transport streams and program streams . Newer systems typically use
240-426: Is produced for audio and video coding standards is typically called a test model. When a sufficient confidence in the stability of the standard under development is reached, a Working Draft (WD) is produced. When a WD is sufficiently solid (typically after producing several numbered WDs), the next draft is issued as a Committee Draft (CD) (usually at the planned time) and is sent to National Bodies (NBs) for comment. When
264-620: Is the last stage of an approval process that starts with the proposal of new work within a committee. Stages of the standard development process include: Other abbreviations: A proposal of work (New Proposal) is approved at the Subcommittee level and then at the Technical Committee level (SC 29 and JTC 1, respectively, in the case of MPEG). When the scope of new work is sufficiently clarified, MPEG usually makes open "calls for proposals". The first document that
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#1732801523694288-541: The MPEG-2 Video standard (ISO/IEC 13818-2) as ITU-T H.262. Sakae Okubo (NTT), was the ITU-T coordinator and chaired the agreements on its requirements. Joint Video Team (JVT) was joint project between ITU-T SG16 /Q.6 (Study Group 16 / Question 6) – VCEG (Video Coding Experts Group) and ISO/IEC JTC 1/SC 29/WG 11 – MPEG for the development of a video coding ITU-T Recommendation and ISO/IEC International Standard. It
312-596: The DBox2 based Dreambox ) use particularly common among enthusiasts and those who intend to obtain services without payment . It also enables the receiver to store digital copies of DVB MPEG transport streams on networked filesystems or broadcast the streams as IPTV to VideoLAN and XBMC Media Center clients. In 2001, following the bankruptcy of Kirch Media , production of the D-box ceased. However, many devices continue to be traded second-hand (often using online auction sites) and fairly high prices are paid because of
336-607: The MPEG base media file format and dynamic streaming (a.k.a. MPEG-DASH ). MPEG was established in 1988 by the initiative of Dr. Hiroshi Yasuda ( NTT ) and Dr. Leonardo Chiariglione ( CSELT ). Chiariglione was the group's chair (called Convenor in ISO/IEC terminology) from its inception until June 6, 2020. The first MPEG meeting was in May 1988 in Ottawa, Canada . Starting around
360-625: The ability to gain services without payment. For this reason, there are also a significant number of, mostly German language, web sites and forums devoted to the devices. When the device was in production, both free and pay TV were limited to the SD resolution (e.g., PAL and NTSC ), thus it is not possible to receive today's programs in HD with any of the D-Boxes or to modify them accordingly. Since 1997 an alternative operating system has been available for
384-438: The digital television system of Japan (ISDB-T). An MPEG-3 project was cancelled. MPEG-3 was planned to deal with standardizing scalable and multi-resolution compression and was intended for HDTV compression, but was found to be unnecessary and was merged with MPEG-2; as a result there is no MPEG-3 standard. The cancelled MPEG-3 project is not to be confused with MP3 , which is MPEG-1 or MPEG-2 Audio Layer III. In addition,
408-479: The following standards, while not sequential advances to the video encoding standard as with MPEG-1 through MPEG-4, are referred to by similar notation: Moreover, more recently than other standards above, MPEG has produced the following international standards; each of the standards holds multiple MPEG technologies for a variety of applications. (For example, MPEG-A includes a number of technologies on multimedia application format.) A standard published by ISO/IEC
432-576: The former Working Group 11 includes three Advisory Groups (AGs) and seven Working Groups (WGs) The first meeting under the current structure was held in August 2024, with MPEG 147 MPEG-2 development included a joint project between MPEG and ITU-T Study Group 15 (which later became ITU-T SG16), resulting in publication of the MPEG-2 Systems standard (ISO/IEC 13818-1, including its transport streams and program streams ) as ITU-T H.222.0 and
456-577: The predecessor of the Dbox2, the Dbox. This was DVB98 (later DVB2000), developed by a single programmer. Despite programming the hardware directly using machine code, DVB2000 is superior in many respects relative to the original software. For the DBox2, an effort was created to port the Linux operating system. This is now the most popular choice. Installation involves first putting the box into its debug-mode ,
480-519: The then-current ITU-T H.265 / HEVC standard, and the JCT-VC was merged into JVET in July 2020. Like JCT-VC, JVET was co-chaired by Jens-Rainer Ohm and Gary Sullivan, until July 2021 when Ohm became the sole chair (after Sullivan became the chair of SC 29). The MPEG standards consist of different Parts . Each Part covers a certain aspect of the whole specification. The standards also specify profiles and levels . Profiles are intended to define
504-574: The time of the MPEG-4 project in the late 1990s and continuing to the present, MPEG had grown to include approximately 300–500 members per meeting from various industries, universities, and research institutions. On June 6, 2020, the MPEG section of Chiariglione's personal website was updated to inform readers that he had retired as Convenor, and he said that the MPEG group (then SC 29/WG 11) "was closed". Chiariglione described his reasons for stepping down in his personal blog. His decision followed
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#1732801523694528-569: The title D-Box . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=D-Box_(disambiguation)&oldid=1179409931 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages DBox2 The combination of third-party developers and network connectivity which facilitates card sharing , makes DBox2 (and
552-483: Was a group of video coding experts from ITU-T Study Group 16 (VCEG) and ISO/IEC JTC 1/SC 29/WG 11 (MPEG). It was created in 2010 to develop High Efficiency Video Coding (HEVC, MPEG-H Part 2, ITU-T H.265), a video coding standard that further reduces by about 50% the data rate required for video coding, as compared to the then-current ITU-T H.264 / ISO/IEC 14496-10 standard. JCT-VC was co-chaired by Prof. Jens-Rainer Ohm and Gary Sullivan. Joint Video Experts Team (JVET)
576-631: Was formed in 2001 and its main result was H.264/MPEG-4 AVC (MPEG-4 Part 10), which reduces the data rate for video coding by about 50%, as compared to the then-current ITU-T H.262 / MPEG-2 standard. The JVT was chaired by Dr. Gary Sullivan, with vice-chairs Dr. Thomas Wiegand of the Heinrich Hertz Institute in Germany and Dr. Ajay Luthra of Motorola in the United States. Joint Collaborative Team on Video Coding (JCT-VC)
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