DualDisc is a type of double-sided optical disc product developed by a group of record companies including EMI Music, Universal Music Group, Sony/BMG Music Entertainment, Warner Music Group, and 5.1 Entertainment Group^[1] and now under the aegis of the Recording Industry Association of America (RIAA). It features an audio layer similar to a CD (but not following the Red Book CD Specifications) on one side and a standard DVD layer on the other. In this respect it is similar to, but distinct from, the DVD Plus invented in Europe by Dieter Dierks and covered by European patents. Image File history File links No higher resolution available. ... “Optical media” redirects here. ... The EMI Group (LSE: EMI) is a British music company comprising of the major record company EMI Music which operates several labels, based in Kensington in London, England, and EMI Music Publishing, based in New York. ... Universal Music Group (UMG) is the largest business group and family of record labels in the recording industry. ... Sony Music Entertainment is a major global record label controlled by the Sony Corporation. ... This article does not cite any references or sources. ... The RIAA Logo. ... A compact disc or CD is an optical disc used to store digital data, originally developed for storing digital audio. ... Red Book is the standard for audio CDs (Compact Disc Digital Audio system, or CDDA). ... Size comparison: A 12 cm Sony DVD+RW and a 19 cm Dixon Ticonderoga pencil. ... DVD Plus, known as DualDisc in the United States, is an optical disc storage technology that combines the technology of DVD and CD in one disc. ...

DualDiscs first appeared in the United States in March 2004 as part of a marketing test conducted by the same five record companies who developed the product. The test involved thirteen titles being released to a limited number of retailers in the Boston, Massachusetts, and Seattle, Washington, markets. The test marketing was seen as a success after 82% of respondents to a survey (which was included with the test titles) said that DualDiscs met or exceeded their expectations. In addition, 90% of respondents said that they would recommend DualDisc to a friend.^[2] Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... The record industry is the part of the music industry that earns profit by selling sound recordings of music. ... Nickname: Location in Massachusetts, USA Coordinates: , Country United States State Massachusetts County Suffolk County Settled 1630 Incorporated (city) 1822 Government  - Mayor Thomas M. Menino (D) Area  - City  89. ... “Seattle” redirects here. ...

DualDisc titles received a mass rollout to retailers throughout the United States in February, 2005, though some titles were available as early as November, 2004. The recording industry had nearly 200 DualDisc titles available by the end of 2005 and over 2,000,000 units had been sold by the middle of that year.^[3] Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ...

Technical details

How a DualDisc works

DualDiscs appear to be based on double-sided DVD technology such as DVD-10, DVD-14 and DVD-18 except that DualDisc technology replaces one of the DVD sides with a CD. The discs are made by fusing together a standard 0.6 mm-thick DVD layer (4.7-gigabyte storage capacity) to a 0.9 mm-thick CD layer (60-minute or 525-megabyte storage capacity), resulting in a 1.5 mm-thick double-sided hybrid disc that contains CD content on one side and DVD content on the other. Image File history File links DualDisc example. ... DVD (commonly Digital Versatile Disc or Digital Video Disc) is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. ... DVD is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. ... DVD (commonly Digital Versatile Disc or Digital Video Disc) is an optical disc storage media format that can be used for data storage, including movies with high video and sound quality. ... A gigabyte (derived from the SI prefix giga-) is a unit of information or computer storage equal to 1000³ bytes or 1024³ bytes (1000³ = one billion). ... ReBoot character, see Megabyte (ReBoot). ...

The challenge for the designers of DualDisc was to produce a dual-sided disc which was not too thick to play reliably in slot-loading drives, while the CD side was not too thin to be tracked easily by the laser. DVD Plus, though conceptually similar, uses a thicker CD layer and thus is more likely to get stuck in a slot-loading player (although this appears to be almost unknown); DualDisc takes the other course by thinning the CD layer.

Because the 0.9 mm thickness of the DualDisc CD layer does not conform to Red Book CD Specifications, which call for a layer no less than 1.1 mm thick, some CD players may not be able to play the CD side of a DualDisc due to a phenomenon called spherical aberration. As a result, the laser reading the CD side might get a "blurry" picture of the data on the disc; the equivalent of a human reading a book with glasses of the wrong strength. Engineers have tried to get around this by making the pits in the CD layer larger than on a conventional CD. This makes the CD side easier for the laser to read; equivalent to the book using bigger print to make it easier to see, even if the person's glasses are of the wrong strength. The downside to this, however, is that the playing time for the CD layer of some early DualDiscs decreased, from the standard 74 minutes of a conventional CD, to around 60 minutes, although this early limitation now appears to have been overcome. Red Book is the standard for audio CDs (Compact Disc Digital Audio system, or CDDA). ... Focal plane Longitudinal sections In optics, spherical aberration is an image imperfection that occurs due to the increased refraction of light rays that occurs when rays strike a lens or mirror near its edge, in comparison with those that strike nearer the center. ...

Because the DualDisc CD layer does not conform to Red Book specifications, Philips and Sony have refused to allow DualDisc titles to carry the CD logo and most DualDiscs contain one of two warnings: Red Book is the standard for audio CDs (Compact Disc Digital Audio system, or CDDA). ... Philips HQ in Amsterdam Koninklijke Philips Electronics N.V. (Royal Philips Electronics N.V.), usually known as Philips, (Euronext: PHIA, NYSE: PHG) is one of the largest electronics companies in the world, founded and headquartered in the Netherlands. ... Sony Corporation ) is a Japanese multinational corporation and one of the worlds largest media conglomerates with revenue of $66. ...

• "This disc is intended to play on standard DVD and CD players.
  May not play on certain car, slot load players and mega-disc changers."
• "The audio side of this disc does not conform to CD specifications and therefore not all DVD and CD players will play the audio side of this disc."

The DVD side of a DualDisc completely conforms to the specifications set forth by the DVD Forum and DualDiscs have been cleared to use the DVD logo. Size comparison: A 12 cm Sony DVD+RW and a 19 cm Dixon Ticonderoga pencil. ... CD may stand for: Compact Disc Canadian Forces Decoration Cash Dispenser (at least used in Japan) CD LPMud Driver Centrum-Demokraterne (Centre Democrats of Denmark) Certificate of Deposit ÄŒeské Dráhy (Czech Railways) Chad (NATO country code) Chalmers Datorförening (computer club of the Chalmers University of Technology) a 1960s... The DVD Forum is an international organization composed primarily of hardware and software companies that use and develop the DVD format. ...

Hopes for DualDisc

Record companies have two main hopes for DualDiscs; the first being that they will eventually replace CDs as the preferred media for purchase at music retailers,^[4] and the second being that the inclusion of bonus DVD content at a price similar to a conventional CD will help to slow down online music piracy by giving consumers more incentive to buy their music through retailers.^[5][6] Some titles such as Devils & Dust by Bruce Springsteen and Straight Outta Lynwood by "Weird Al" Yankovic have been released in the United States on DualDisc only. The Cathach of St. ... Devils & Dust is the thirteenth studio album by Bruce Springsteen, and his third folk album (after Nebraska and The Ghost of Tom Joad, respectively). ... Bruce Frederick Joseph Springsteen (born September 23, 1949) is an influential American singer, songwriter, and guitarist. ... Singles from Straight Outta Lynwood Released: August 21, 2006 Released: September 12, 2006 Released: September 26, 2006 Released: March 19, 2007 Straight Outta Lynwood is the twelfth album by Weird Al Yankovic. ... This article is about the musician himself. ...

Costs versus conventional CDs

In the US, the cost of a DualDisc at retail versus that of a conventional CD varies depending on the title but, on average, a DualDisc costs about $1.50 to $2.50 USD more than the same title on CD.^[7] Some DualDisc titles such as Mr. A-Z by Jason Mraz and In Your Honor by the Foo Fighters have enhanced packaging which increases the retail cost of the DualDisc version of the albums over their CD counterparts more than the average. There are also other factors which go into the additional costs such as production, marketing etc. ISO 4217 Code USD User(s) the United States, the British Indian Ocean Territory,[1] the British Virgin Islands, East Timor, Ecuador, El Salvador, the Marshall Islands, Micronesia, Palau, Panama, Caicos Islands, and the insular areas of the United States Inflation 2. ... Mr. ... Jason Thomas Mraz (born June 23, 1977) is an American singer-songwriter, born and raised in Mechanicsville, Virginia, a suburb of Richmond. ... In Your Honor is the fifth album by Foo Fighters, first released on June 13, 2005 internationally (as In Your Honour in the UK) and a day later in the United States. ... This article is about the band. ...

Common DVD content

What one finds on the DVD side of a DualDisc title will vary. Common content includes:

• The entire reprinted album in higher-quality stereophonic and/or surround sound.
• Documentaries
• Music videos
• The artist's discography
• A link to the artist's website
• There are sometimes film-and-soundtrack DualDisks.

Stereophonic means having two channels of audio. ... Multichannel audio is the name for a variety of techniques for expanding and enriching the sound of audio playback by recording additional sound channels that can be reproduced on additional speakers. ... Documentary film is a broad category of visual expression that is based on the attempt, in one fashion or another, to document reality. ... A music video (also video clip, promo) is a short film or video meant to present a visual representation of a popular music song. ... This article or section does not cite its references or sources. ... A website (alternatively, Web site or web site) is a collection of Web pages, images, videos and other digital assets that is hosted on one or several Web server(s), usually accessible via the Internet, cell phone or a LAN. A Web page is a document, typically written in HTML...

Audio types

The CD side of a DualDisc contains standard 16-bit LPCM audio sampled at 44.1 kHz. On the DVD side, most record companies, with the notable exception of Sony Music, provide the album's music in both high-resolution, 24-bit DVD-Audio (typically at a sample rate of 96 or 192 kHz for stereo and 48 or 96 kHz for surround sound) and lower-resolution, 16-bit Dolby Digital sound (typically sampled at 48 kHz). This is done to allow consumers with DVD-Audio players access to very high-resolution stereophonic and/or surround sound versions of the album while also providing the lower-resolution Dolby Digital stereophonic and/or surround sound which is compatible with any DVD player. Linear pulse code modulation (LPCM) is a method of encoding audio information digitally. ... ... The DVD-Audio logo. ... Dolby Digital is the marketing name for a series of lossy audio compression technologies by Dolby Laboratories. ...

Because Sony has a high-resolution audio format, SACD, in the marketplace which directly competes with DVD-Audio (see next section), Sony Music, as a general rule, only provides 16-bit, 48 kHz sampled LPCM stereophonic (and sometimes Dolby Digital Surround) sound on the DVD side of their DualDiscs. The sound is compatible with any DVD player; however, it does not provide the higher fidelity and resolution of 24-bit, high sample-rate DVD-Audio. Super Audio CD (SACD) is a read-only optical audio disc format aimed at providing much higher fidelity digital audio reproduction than the compact disc. ...

Competition

The biggest competition to DualDisc is the hybrid Super Audio CD (SACD), which was developed by Sony and Philips Electronics, the same companies that created the CD. DualDiscs and hybrid SACDs are competing solutions to the problem of providing higher-resolution audio on a disc that can still be played on conventional CD players. ImageMetadata File history File links Sacd_model. ... Super Audio CD (SACD) is a read-only optical audio disc format aimed at providing much higher fidelity digital audio reproduction than the compact disc. ... Sony Corporation ) is a Japanese multinational corporation and one of the worlds largest media conglomerates with revenue of $66. ... Philips HQ in Amsterdam Koninklijke Philips Electronics N.V. (Royal Philips Electronics N.V.), usually known as Philips, (Euronext: PHIA, NYSE: PHG) is one of the largest electronics companies in the world, founded and headquartered in the Netherlands. ...

DualDiscs take the approach of using a double-sided disc to provide the necessary backwards compatibility; hybrid SACDs are a one-sided solution that instead use two layers: a conventional CD layer and a high-resolution layer.

Lasers in conventional CD players have a different wavelength (typically around 780 nm) than those in SACD players (650 nm). Hybrid SACDs possess a special high density layer that is transparent to the conventional CD player's laser but is partially reflected by the SACD player's laser. When a hybrid SACD is placed into a conventional CD player, the laser beam passes through the high-resolution layer and is reflected by the conventional layer at the regular 1.2 mm distance. The result is that the hybrid disc plays as normal. The wavelength is the distance between repeating units of a wave pattern. ...

When a hybrid disc is placed into an SACD player, the laser is partially reflected by the high-resolution layer (at 0.6 mm distance) before it can reach the conventional layer. If a conventional CD is placed into an SACD player, the laser will read the disc without incident since there is no high-resolution layer to reflect. Because of the difference between the working distances of CDs and SACDs, the aperture of the lens in the SACD player must be adjusted to obtain the correct focal length.^[8][9] a big (1) and a small (2) aperture For other uses, see Aperture (disambiguation). ... The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror. ...

Hybrid SACDs claim a higher compatibility rate with conventional CD players than DualDisc, due to the fact that hybrid SACDs conform to Red Book standards. However, a SACD or SACD-capable DVD player is required to take advantage of the enhanced SACD layer. With a DualDisc, consumers can use their existing DVD player to hear surround mixes. (DVD-Audio capable players are required for higher-resolution audio, if present.) It is currently estimated that 75% of households in the United States have at least one DVD player.^[10] Red Book is the standard for audio CDs (Compact Disc Digital Audio system, or CDDA). ...

In addition, several SonyBMG titles whose regular editions include copy protection programs (such as XCP and SunnComm) do not feature the software on the DualDisc versions. XCP - the XML Control Protocol - is a drop-in replacement for traditional Transmission Control Protocol, or TCP. External links XCP Consortium Categories: Internet protocols | XML | TLAs ... SunnComm International Inc. ...

Criticisms

There are numerous criticisms about DualDiscs, ranging from size to DualDiscs being more fragile than conventional CDs.

Consumer complaints

In addition to the possible inability for some CD players to read a DualDisc properly, other consumer criticisms of DualDisc include:

• The 1.5 mm-thick disc can get jammed in slot loading computer DVD drives, DVD players, slot-loading CD players (such as car CD players) and mega-changers. This may even damage the disc. Additionally, in top-loading CD-players with a separate (magnetic) puck placed on top of the disc to clamp it down while spinning, the thicker disc may cause the puck not to hold steadily on top of the disc, causing it to fly off during playback.
• For any CD player, the thinner CD layer makes reading the CD side of a DualDisc harder than reading a conventional CD. Thus, anomalies such as small scratches, fingerprints or disc tilt may cause tracking errors more easily than those same anomalies would on a conventional CD. Since disc damage is inevitable over time, this can mean a reduction in a DualDisc's effective lifetime compared to a CD.
• Players that use a DVD drive (whether the player plays DVDs or not: some high-spec CD players are like this) can generally not play the CD side. This problem (and those above) could be completely solved by manufacturing using a different material for the disc. The DVD side of a DualDisc is required to offer at least the same quality of audio as the CD side (eg 16-bit, 48kHz PCM) or better, so as a result owners of DVD players should simply play the DVD side. (However, this is not necessarily as simple as playing a CD: you have to navigate menus; although DVD-A content should be authored so as not to require a video monitor.)
• The recommended 60-minute limit of the CD side prohibits it from including the entire content of some conventional CDs (although this limitation may have been overcome). When record companies have wanted to issue extended content that exceeds the current capabilities of DualDisc (eg a very long CD side or requiring a double-layer DVD, which is currently under development for DualDisc), they have generally opted for a "DoubleDisc" package: a single package containing a regular CD and a DVD-Audio/Video disc.
• Since both sides of the disc are used for data, a label cannot appear on either side of the disc. The only way that a consumer knows which side is CD and which is DVD is by looking at the center ring of the disc where it is marked. However there are now labelling technologies that are transparent to laser light but visible in normal light, which can in theory be used to label any type of double-sided disc.
• Some consumer CD-ROM drives may have difficulty ripping audio tracks from the CD side

For the process of sawing wood along the grain, see Rip saw. ...

Manufacturer warnings

A number of electronics companies such as Lexicon,^[11] Marantz,^[12] Mark Levinson,^[13], Onkyo,^[14] Panasonic,^[15] Pioneer,^[16] and Sony (both its Computer Entertainment and Electronics divisions)^[17][18] issued statements warning consumers about possible problems with playing DualDisc titles on their equipment. Lexicon is an audio equipment manufacturing company, founded in 1971. ... This article or section does not cite its references or sources. ... Mark Levinson, now owned by Madrigal Audio Laboratories is a company specializing in high-end digital audio processors, integrated amplifiers, power amplifiers, pre amplifiers, and CD players. ... Onkyo the company Onkyo Corporation ) is a Japanese consumer electronics manufacturer, specializing in home cinema and audio equipment. ... Panasonic is an international brand name for Japanese electric products manufacturer Matsushita Electric Industrial Co. ... Old Pioneer Logo (Until 1998) Pioneer Corporation ) (TYO: 6773 ) is a Japanese multinational corporation that specializes in digital entertainment products, based in Tokyo, Japan. ... Sony Corporation ) is a Japanese multinational corporation and one of the worlds largest media conglomerates with revenue of $66. ... Sony Computer Entertainment, Incorporated ) (SCEI) is a Japanese video game company specializing in a variety of areas in the video game industry, mostly in video game consoles and is a full subsidiary of Sony Corporation that was established on November 16, 1993 in Tokyo, Japan. ...

These warnings ranged in severity from DualDiscs just not working with the equipment to actual damage to the disc and/or equipment. Meridian Audio, Ltd., on the other hand, issued a statement that "no harm or damage whatsoever" would be caused to the player or the disc if DualDiscs were used on their equipment, but noted that their players with DVD drives would not reliably play the CD layer. Boothroyd Stuart Meridian is a British manufacturer of high-end high-fidelity audio and video equipment. ...

Legal controversy

There has been some controversy surrounding the DualDisc format, as Dieter Dierks, the inventor of the DVD Plus specification, claims that DualDisc technology is in violation of his European patents.^[19][20] This delayed the release of DualDisc titles in Europe, with them eventually hitting European shores in September 2005. The first British artist to announce a DualDisc release of his album was Sony/BMG recording artist Will Young. http://shopping. ... DVD Plus, known as DualDisc in the United States, is an optical disc storage technology that combines the technology of DVD and CD in one disc. ... William Robert Young (born January 20, 1979) is an English singer and actor. ...

DualDisc releases

For a list of current and planned DualDisc releases, see List of DualDisc releases. Since its mass rollout, some of 2004 and 2005s most popular albums have been released on DualDisc in the hopes that the extra exposure will help the new technology gain acceptance in the marketplace. ...

Test releases

Below is a list of the thirteen initial DualDisc titles released as part of the test marketing. Some of these DualDisc titles are now out of print.

• Burzum's Draugen - Rarities
• 3 Doors Down's Away from the Sun
• AC/DC's Back In Black
• Audioslave's self-titled album
• Barenaked Ladies' Everything to Everyone
• David Bowie's Reality
• Dave Brubeck's Time Out (recalled due to licensing issues)
• Donald Fagen's The Nightfly
• The Donnas' Gold Medal (recalled due to a mastering error which resulted in one track being omitted from the album)
• Good Charlotte's The Young and the Hopeless
• Linkin Park's Reanimation
• P.O.D.'s Payable on Death
• R.E.M.'s Automatic for the People
• Andrew W.K.'s The Wolf

Cover of Hvis Lyset Tar Oss (en:If the light takes us) Burzum began in 1991 as a prominent and influential Norwegian black metal solo project of Varg Vikernes (born Kristian Vikernes). ... 3 Doors Down is an American alternative rock band formed in Escatawpa, Mississippi in 1996. ... Away from the Sun is an album by 3 Doors Down, released on November 12, 2002. ... This article is about about the band. ... Singles from Back in Black Released: 1980 Released: 1981 Released: 1981 For other uses, see Back in Black (disambiguation). ... Audioslave was an alternative/hard rock supergroup that consisted of the instrumentalists of Rage Against the Machine: Tom Morello (guitar), Tim Commerford (bass and back-up vocals) and Brad Wilk (drums), together with Chris Cornell of Soundgarden (lead vocals and rhythm guitar) as their lead singer. ... Audioslave is the eponymous debut album by hard rock/alternative rock band Audioslave and was released in November, 2002 (see 2002 in music). ... Barenaked Ladies (often abbreviated BNL or occasionally BnL) is a Canadian alternative rock band currently composed of Jim Creeggan, Kevin Hearn, Steven Page, Ed Robertson, Tyler Stewart, and formerly Andy Creeggan. ... Everything to Everyone is the eighth full-length album by Barenaked Ladies and their seventh studio album. ... David Bowie (IPA: []) (born David Robert Jones on 8 January 1947) is an English singer, songwriter, actor, multi-instrumentalist, producer, arranger and audio engineer. ... Reality is an album by David Bowie, released in 2003 (see 2003 in music). ... David Warren Brubeck (born December 6, 1920 in Concord, California[1]), better known as Dave Brubeck, is a U.S. jazz pianist. ... // Track listing Blue Rondo à la Turk - 6:44 Strange Meadowlark - 7:22 Take Five - 5:24 Three to Get Ready - 5:24 Kathys Waltz - 4:48 Everybodys Jumpin - 4:23 Pick Up Sticks - 4:16 All pieces composed by Dave Brubeck, except Take Five, by Paul Desmond. ... Donald Jay Fagen (born January 10, 1948 in Passaic, New Jersey) is an American musician and songwriter, best known as co-writer, co-founder, singer, and pianist with the jazz-rock band Steely Dan. ... The Nightfly is the first solo album by Steely Dan member Donald Fagen, released in 1982 (see 1982 in music). ... This article is about the band. ... Gold Medal is an album by American band The Donnas, released in 2004. ... Good Charlotte is a Pop Punk band from Waldorf, Maryland that formed in 1996. ... The Young and the Hopeless is the second album by Good Charlotte, released on October 1, 2002. ... Linkin Park is a rock band from Agoura Hills, California. ... Singles from Reanimation Released: July 15, 2002 Released: 2002 For reanimation of the dead, see Undead. ... This biographical article does not cite any references or sources. ... Payable on Death is the fifth studio album, and third major label release by Californian rap metal quartet P.O.D.. This is also the first album to include Jason Truby. ... This article is about the band. ... Automatic for the People is R.E.M.s eighth album, and their third major label release for Warner Bros. ... This article or section does not cite any references or sources. ... This article about a musical group, band, singer, musician, album, or song does not make it clear whether the subject meets the WikiProject Music criteria for importance. ...

Notes

1. ^  Alex Vegia, Music industry banks on DualDisc, Associated Press, August 26, 2004.
2. ^  DualDisc Guide, accessed August 13, 2005.
3. ^  DualDiscs Getting Popular, The Online Reporter Issue 446, May 28, 2005.
4. ^  DualDisc Artists Holding Top Spots, billboardpostplay.com, May 19, 2005
5. ^  Joshua O'Connell, New DualDisc Format Ups the Ante Against Music Piracy, The Fairfield Mirror, March 17, 2005.
6. ^  Anthony Breznican, DualDisc breaks sound barrier, USA Today, April 25, 2005.
7. ^  DualDisc: CD and DVD on One Disc, accessed August 13, 2005.
8. ^  Sony Corporation and Royal Philips Electronics, Super Audio CD - A Technical Overview, 2001, p7 bottom-left diagram.
9. ^  Super Audio CD, Digital Audio Industrial Supply, 2004.
10. ^  75% of US households have a DVD player, ZDNet Research, April 6, 2005.
11. ^  Statement Regarding the "DualDisc" Format, Lexicon, December 23, 2004.
12. ^  Important Notice About Dual Disc, Marantz, April 5, 2005.
13. ^  Statement Regarding the "DualDisc" Format, Mark Levinson Madrigal Audo Laboratories, December 23, 2004.
14. ^  Onkyo "DualDisc" Question, Onkyo, accessed August 13, 2005.
15. ^  DualDisk, Panasonic, accessed August 13, 2005.
16. ^  Important Notice About "DualDisc" To Prevent Product Damage, Pioneer Electronics, accessed August 13, 2005.
17. ^  Consumer Alerts - DualDisc, Sony Computer Entertainment America, March 31, 2005.
18. ^  Brian Moura, Sony Electronics Issues Warning About Dual Disc Compatibility With Sony Disc Players, High Fidelity Review, November 4, 2004.
19. ^  Stuart M. Robinson, DualDisc The Hybrid CD/DVD Disc - The DVD Plus Saga... (Part Two), High Fidelity Review, November 2, 2004.
20. ^  Dieter Dierks patent search from the European Patent Organisation

The Associated Press, or AP, is an American news agency, the worlds largest such organization. ... is the 238th day of the year (239th in leap years) in the Gregorian calendar. ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... is the 225th day of the year (226th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... May 28 is the 148th day of the year (149th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... is the 139th day of the year (140th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... is the 76th day of the year (77th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... USA Today is a national American daily newspaper published by the Gannett Company. ... is the 115th day of the year (116th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... is the 225th day of the year (226th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... Sony Corporation ) is a Japanese multinational corporation and one of the worlds largest media conglomerates with revenue of $66. ... Philips HQ in Amsterdam Koninklijke Philips Electronics N.V. (Royal Philips Electronics N.V.), usually known as Philips, (Euronext: PHIA, NYSE: PHG) is one of the largest electronics companies in the world, founded and headquartered in the Netherlands. ... Year 2001 (MMI) was a common year starting on Monday (link displays the 2001 Gregorian calendar). ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... is the 96th day of the year (97th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... December 23 is the 357th day of the year (358th in leap years) in the Gregorian calendar. ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... is the 95th day of the year (96th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... December 23 is the 357th day of the year (358th in leap years) in the Gregorian calendar. ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... is the 225th day of the year (226th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... is the 225th day of the year (226th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... is the 225th day of the year (226th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... Sony Computer Entertainment is a division of Sony Corporation which produces PlayStation, Playstation 2 and PlayStation 3 hardware and games including online games. ... March 31 is the 90th day of the year in the Gregorian calendar (91st in leap years), with 275 days remaining. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... is the 308th day of the year (309th in leap years) in the Gregorian calendar. ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... is the 306th day of the year (307th in leap years) in the Gregorian calendar. ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... The European Patent Organisation (EPO or EPOrg in order to distinguish it from the European Patent Office, which is one of the two organs of the organisation [1]) is a public international organisation set up by the European Patent Convention (EPC). ...

References

• Surroundablog, August 26, 2004
• The Online Reporter, Issue 446, May 28-June 3, 2005
• Billboard, 2005-05-19
• International Herald Tribune, 2005-03-21
• USA Today, 2005-04-25
• Columbia ISA DualDisc Guide
• High Fidelity Review, 2004-11-02
• RedBook CD Audio specifications, November, 1991 (pp. 3)
• European Patent Office

External links

• Official DVDplus Website
• DVDplus Licensees
• Official Website
• DualDisc licensing
• "DVD Forum Approves DualDisc", a 14 June 2004 Gizmodo entry
• The Music Goes on Side A and the Flip Side Is a DVD
• DualDisc rollout challenged by Euro patent holder
• Onkyo USA statement about compatibility
• Pioneer Electronics statement about compatibility
• Panasonic statement about compatibility
• Marantz statement about compatibility
• Sony Electronics FAQ with statements about compatibility