Nibble 33.2 - Compact Disc Varieties

Part 2 on the Compact Disc (PART 1)





Writable CDs, Videos on CDs, and the CD-ROM 
will be explored in more detail in future nibbles.

References and Further info

This has been the most intense researching I have done so far for the Snacking Otaku, finding any information on the development of obscure formats. they were A LOT of rabbit holes, including an early CD-based console by Mattel developed in 1987-88, which seems almost non-existent! They are articles mentioning it been in the works. And that's it. (sigh)

As a result, this list of references is very long....

Museum of Obsolete Media

The history of the CD - The CD family

SECONDARY STORAGEDEVICES

Compact Disc Story - Kees Schouhamer Immink (Journal of the Audio Engineering Society, May 1998)

Origins and Successors of the Compact Disc: Contributions of Philips to Optical Storage - J.B.H. Peek, J.W.M Bergmans, J. A. M. M. van Haaren, Frank Toolenaar, S.G. Stan (Springer Netherlands, 2009, ISBN: 9781402095535)

https://dutchaudioclassics.nl - Great website cataloguing Philips early work on the CD.

Philips Historical Products

http://cdfs.com/index-cdfs.html

Digital Audio Technology: a guide to CD, MiniDisc,SACD,DVD(A), MP3 and DAT - Jan Maes and Marc Vercammen (Focal Press, 2001, ISBN: 978-1-136-11861-6)
Upgrading and Repairing PCs -  Scott Mueller (Pearson Education, 2015, ISBN: 978078975610)
A Detailed Timeline of Compact Disc Technology - Benj Edwards (Vintage Computing and Gaming, 2015)
CD-R/DVD: Disc Recording Demystified - Lee Purcell (McGraw-Hill, 2000, ISBN; 0-07-135715-7)
1980s CD + G (CDG) Releases - (New Directions in Music, 2019)
The CD+G Museum - An online collection of the CD+G graphics you missed out on seeing.

CD, or Not CD? - Larry White & Elinor Stecker (Popular Photography, Oct 1992)

Kodak, Intel Define Strategy To Bridge Pictures With Digital Imaging - Intel News Release (September 1998)

Kodak Picture CDImaging Resource (November 1999)

Compact Disc Video Hits the Streets - Barry Fox (New Scientist, 19th March 1987)

Interactive video gets the full motion treatment - Barry Fox (New Scientist, 31st March 1990)
White Book Opens New Chapter in Digital Standards - Barry Fox (New Scientist, 10th July 1993)

Compact Disc Formats - George Cole (Television, April 1990)

Developments in CD Technology – George Cole (Television, December 1990)

Hardware Pact to Clear Way For Video CD Format - Peter Dean (Billboard, 10th July 1993)

www.videohelp.com/vcd

www.techtarget.com/searchstorage/definition/VCD

Pandora’s digital box: From the periphery to the center, or the one of many centers - www.davidbordwell.net (2012)

archive.ph/20120914065916/http:/www.iki.fi/znark/video/svcd/overview

Videodiscs in Healthcare: A Guide to the Industry – (Stewart Publishing, 1988, ISBN; 9780936999081)

Enhanced CDs Get Long-awaited Blue Book Specs - Marilyn A. Gillen (Billboard, 17 June 1995)

Rykodisc is First Label to Release CD PlusMarilyn A. Gillen (Billboard, 29th July 1995)

New Music Media Faces Numerous Growing PainsMarilyn A. Gillen (Billboard, 23rd December 1995)

www.sa-cd.net/faq

Beyond the X Rating - Logan Decker (Maximum PC, September 2001)

https://www.discogs.com/release/1543940-The-Flaming-Lips-This-Here-Giraffe

Lists of shaped CDs - Discogs

https://distrowatch.com/table.php?distribution=lnxbbc

The Rainbow Book CD Varieties

What a deal the Compact Disc was in electronics in the 1980s can’t be understated. While PCs and Macs were lumbered with 5-10MB hard drives and floppy disks that can barely store ONE, here was a portable medium capable of recording 650MB (or more, with a bit of track squeezing). And all of it can be accessed randomly. It didn’t take long for the CD to find other applications beyond just audio. Philips and Sony began work making the CD a computer data format in 1983. Eventually, in 1985, the first CD-ROM drives were made for PCs (Macs had to wait until 1988). From then on, the CD saw a lot of applications beyond just music. CDs became the medium of choice for interactive content, such as games. Then CDs became recordable. CDs that recorded photographs and video came and data capacity increased. These changes are documented and specified in a set of “Rainbow Books,” beginning with the Red Book of 1980, which defined the original audio CD.

 

Rainbow Books

Nine colour-coded “Rainbow Books” were created from 1980 to 2000, to specify multiple formats of Compact Disc, from the original audio CD (specified by the Red Book) to Double-density compact discs (specified by the Purple Book).

 

Red Book (1980)

Published by Philips and Sony in 1980, the Red Book set the standards for the Compact Disc Digital Audio format, released in 1982. It was adopted as an international standard by the IEC in 1987, becoming IEC 60908.

 

CD-DA

The Red Book set the following specifications for the Compact Disc Digital Audio -

·       The audio must be recorded in 2-channels of two-part 16-bit pulse code modulated samples sampled at a frequency of 44,100Hz.

·       Maximum total playing time - 74 minutes

·       Minimum play time of a track - 4 seconds

·       Maximum possible number of tracks – 99

·       Maximum number of index points on a track – 99

·       The International Standard Recording Code (ISRC) must be used when cataloguing recordings.

·       Data is subdivided into sectors that are 1/75th of a second in length, each containing 2352 bytes.

·       Each sector is assigned 98 control bytes, which encode up to 8 subchannels of information – P Q R S T U V and W. Only P and Q were used in CD-DA.

 

Using the other subchannels

The Red Book was later amended to include a number of audio CD formats with additional information recorded in the originally unused subchannels R S T U V and W.

 

CD-Text

Released in September 1996, CD-Text is an extension to the Red Book audio CD backed by Sony. These are normal audio CDs with additional text information, such as track titles, artist names, etc. Text is stored in subchannels R to W, in a format compatable with the Interactive Text Transmission System (ITTS), a system used to encode text information on digital media to display on devices playing it.

 

The Interactive Text Transmission System is what is in use when a digital audio device displays the artist’s name and song title of the track that is playing. ITTS became IEC standard 61866 in 1997, and is used on MiniDisc and digital radio systems.

 

CD+G

CD+G are audio CDs with additional computer graphics. They can play music in any CD player, but if you connect a TV to a CD+G player, you’ll see graphics on the screen as the music plays. These graphics are stored in subchannels R to W. The first CD+G release was the comedy album Eat or Be Eaten, by The Firesign Theatre, in 1985.

 

The graphics stored on CD+Gs are of a 16 colour (4-bit) palette, rendered in 6x12 pixel tiles, covering a screen area of only 288 x 192 pixels, surrounded by a solid colour border one tile thick. The total raster covered 300 x 216 pixels of screen area.

 

Apart from dedicated karaoke machines, CD+G graphics can be displayed from a number of consumer devices, including the NEC TurboGrafx-CD, the Philips CD-i, the 3DO console system, the Sega CD and Saturn, the Commodore Amiga CD32 and CDTV, the Atari Jaguar CD and the Pioneer LaserActive. Some stand-alone DVD players can display them.

 

Amiga CD32 (1993)

 

CD+EG/CD+XG

CD+EG is an improved spec, standardized in 1991. It offers a 256-colour (8-bit) palette and effects in the same pixel area in a backward compatible manner. But it has rarely been used commercially.

 

CD+MIDI

Developed by Warner New Media, these audio CDs also contain MIDI (Musical Instrument Digital Interface) information. This allows one to manipulate the music recorded, having it been played through electronic instruments or allow one to isolate that guitar solo. The first CD+MIDI was released at the National Association of Music Merchants (NAMM) winter trade show in 1992.

 

Musical Instrument Digital Interface (MIDI) is a electronic communication system designed to create a standard connection between electronic musical instruments and computers. It was created by Dave Smith and Chet Wood of Sequential Circuits and introduced in 1981.

 

Yellow Book (1983)

Philips and Sony (with some collaboration with Microsoft) began work making the Compact Disc a medium for interactive content in 1983, publishing the Yellow Book in October. That work initially led to Philips’ CD-i multimedia platform and the Green Book. At the same time, Sony and others concentrated on an alternative CD-based format. Everyone was working on their own system, until Philips, Sony, Microsoft, Apple, and a few other computer companies decided to meet up in the High Sierra Hotel and Casino, near Lake Tahoe, California, in November 1985. There, they decided on a standard filing format for the CD-ROM. After many monthly meetings, in May 1986, the group published the High Sierra Format system for CD-ROMs. ECMA International adopted it (with a few modifications) as standard ECMA-119 in December 1986. ECMA then submitted this to the ISO, which led to that becoming ISO 9660 in 1988.

 

The physical and mechanical properties of the CD-ROM format are specified by ECMA-130, first published July 1988, and ISO/IEC 10149, first published August 1989.

 

CD-ROM

The CD-ROM was announced by Philips and Sony at COMDEX in Las Vegas, in November 1984. Sony and Denon introduced the CD-ROM at COMDEX in Tokyo in March 1985. The first consumer CD-ROM drive (the Philips CM100) went on sale in 1986 for $1,495, and came with a copy of The Electronic Encyclopedia, by Grolier. The CD-ROM became the medium for interactive media, such as games, for a decade, until DVDs and the internet surpassed it.

 

CD-ROM XA

In September 1988 Philips, Sony and Microsoft agreed to develop an extended CD-ROM format, to incorporate audio and video capabilities to CD-i and allow them and CD-ROMs to be used in each other’s players. The result, CD-ROM XA (eXtended Architecture), was published in 1989. CD-ROM XA combined the Yellow Book CD-ROM and Green Book CD-i to bring CD-i audio and video capabilities to the PC.

 

Mixed Mode CD

Introduced by IBM and Philips/DuPont Optical in August 1988, the Mixed Mode CD is both an audio CD and a CD-ROM on the same disc. They are the predecessor of the CD Extra.

 

Green Book (1986)

Although Philips and Sony created the Yellow Book in 1983, they also worked on another CD-based format for computer data. Philips and Sony announced the result of this work, to the surprise to Bill Gates, at Microsoft’s CD-ROM Conference in Seattle in March 1986 – the Compact Disc Interactive (CD-i). The Green Book, specifying this CD format was issued in May 1986. Philips eventually did about 90% of its development, resulting in …..

 

CD-Interactive

The CD-Interactive platform was a major attempt to introduced interactive multimedia to the home.

Philips launched the first CD-i player in the US in October 1991, aiming to become one’s main entertainment centre, replacing one’s VCR and home computer/game console. It’s a subject worthy of its own nibble.

 

CD-i allows the display of full screen animations in 128 colours over a 16.7 million colour background, or play partial screen moving video in a lower frame rate in 16.7 million colours. But, with the Digital Video cartridge installed in the player, it can display full-screen 16.7million colour MPEG-1 video in 384x280 resolution.

 

CD-i players can decode CD audio, as specified in the Red Book, as well as audio encoded using Adaptive differential pulse-code modulation (ADPCM). With the Digital Video cartridge installed, they can also do audio encoded in MP1 and MP2 (Not MP3, as it wasn’t invented let).

 

Philips CD-i 370 portable video disc player (1995)

 

CD-i Ready

To help bridge the transition, in 1991 Philips developed the CD-i Ready format. These audio CDs place the interactive software and data in the pregap of track 1 (index 0), so normal CD players can ignore it. Regular CD-i discs stored the data in regular indexes of the first tracks, which meant regular CD players can interpret them.

 

Orange Book (1988)

The idea of a recordable optical disc had been around since the first LaserDisc prototypes in the 1970s. Philips and Sony announced the Orange Book standard for recordable CDs in 1988. It comes in three parts. Part I describes a magnetic-optical disc system, which later became the MiniDisc. Part II describes a “Compact Disc Write Once” (CD-WO) and a “hybrid” spec for PhotoCD. Part III (added in 1996) describes a “Compact Disc Erasable”.

In 1991 a group made up of Sun Microsystems, the Jet Propulsion Laboratory, DEC, Sony, Philips, Meridian Data, Hewlett-Packard, Ricoh, and Kodak met up in Frankfurt, Germany, to form the Frankfurt Group. They met up to iron out the details about the Orange Book standards, and how to make them compatable with previous CD-ROM formats. The result was released at Microsoft’s Sixth Annual Conference and Exposition on Multimedia and CD ROM, in San Jose, California, in March 1991.

 

CD-R

In 1985 materials and electronic component company Taiyo Yuden started work on the dyes that made the CD-R possible. The resulting discs, costing about $100 each, were made for use on the first CD burner, the Yamaha PDS100 CD Recordable system, introduced in 1988. Due to it using a $35,000 Yamaha audio recording drive and thousands of dollars’ worth of additional error correction circuitry, the whole set up cost $50,000. It was as big as a washing machine and was 1x speed only. The original purpose for CD-Rs was to make prototype CDs for pressing plants. But over the next decade, the “CD Burner” got cheaper, smaller and faster in making recordings, opening up CD authoring to everyone with a computer.

Philips introduced the first 2x recorder (the CDD 521) in 1991. It was the size of a stereo receiver and cost $12,000. Sony introduced their 2x recorder in 1992. JVC introduced their first 2x recorder in 1993, which was also the first to have the half-height ¼-in form factor that can be installed in PC disc drive bays. In 1995, Yamaha introduced the first 4x recorder (the CDR100) which sold for $5,000. In late-1995 Hewlett-Packard sold a 2x recorder (the 4020i) for less than $1,000.

 

CD-RW

In early 1996, Sony, Philips, Ricoh, Yamaha, Hewlett-Packard, and Mitsubishi Chemical Corporation introduced what was originally called the “CD-Erasable.” Ricoh mostly led its development and introduced the first CD-ReWritable drive (the MP6200S) in May 1996.

 

Beige Book (1990)

While developing the White Book standards, Philips and Kodak created a standardized CD format dedicated to storing digitized photographs, which combined the CD-ROM XA and the CD-R’s multisession capabilities. Kodak announced this development in October 1990.

 

Photo-CD

Introduced in 1992, the Photo CD was the first consumer use of CD-Rs. These golden CDs stored up to 100 images in Kodak’s own PhotoYCC encoding format, and stored up to six different resolutions of each photo. Having multiple versions of the same photo in different sizes was useful, before photo editing software became more popular. Photographers can have their photos burned on a disc the same means they get their photos developed, by sending it to a developer with the right equipment. Professional photographers liked it, as it was a cheaper means to get their photos on film digitized at high quality ($3 per photo). But they later turned against it, due to how it handled colour and its low dynamic range.

 

Photo CDs stored six version of the same photo, with the highest resolution reserved only for use in the Pro Photo CD master version of the service.

/16 128x192 Thumbnail

/4 256x384 Thumbnail

X1 512x768 TV resolution

X4 1,024x1,563 HDTV resolution

X16 2,048x3072 Print size

X64 4,096x6,144 used by the Pro Photo CD Master service only

 

Kodak originally sold the Photo CD with players that can be connected to a TV to display the photos. But most used their computer CD drives and software to do that instead. The first Photo CD players were released in August 1992. The Kodak PCD 870 was the more-pricy ($549) fully-featured Photo CD compatable player sold at launch. Compared the more basic ($449) PCD 270, the 870 can display images in any order, rotate them and zoom in on details. It also plays audio CDs too.

 

Five Photo CD Flavours

The Photo CD specifications included five categories of images that can be stored on them –

·       Medical images – X-rays and body scanner imagry.

·       Pro – For professional photographers, which supports most film sizes.

·       Catalog – Can store up to 6,000 images within a linked environment, ideal for interactive catalogues.

·       Portfolio II – Replaced an earlier Portfolio standard, which offered tools to create audio-visual presentations.

·       Master – The disc people got when they sent in their film to be developed.

 

Picture CD

As digital photography took off in the 1990s, Kodak’s proprietary Photo CD was proving unpopular. In September 1998 Kodak and Intel unveiled the more inclusive Picture CD and began test marketing it in Indianapolis and Salt Lake City. For less than $10, people still using film can drop off their film to a lab and have their photos digitized as high-resolution jpegs on a Picture CD. It proved a huge success, beyond Kodak’s expectations, that the they decided to roll out the service across the whole US in mid-1999. It was a neat stepping stone service for those who were making the then still expensive transition to digital. But, as digital camera prices fell, the need for the service decreased.

 

A Picture CD stores a whole roll of film’s photos as 2536x1024 jpeg images, large enough for 8x10 prints.

 

White Book (1993)

They were a number of attempts to put video on a CD. So many that they are a subject for a separate nibble. White book was published by JVC and Philips in March 1993. It set out the standards for CDs that can store audio, images and video. The resulting disc formats (based on CD-I and CD-ROM XA) were a bridge between LaserDisc and DVD.

 

Video CD

The Video CD was first announced by Sony, Philips, Matsushita, and JVC during the 4th Multimedia Conference in London, UK, in June 1993. They were a number of different versions of Video-CD specified in the White Book.

·       Karaoke-CD 1.0 – Defined by Philips and JVC in 1992 to used mainly in Japanese karaoke applications. It only had basic video features.

·       Video-CD 1.1 – Defined by Sony, Philips, Matsushita, and JVC, this fully-fleshed out version was introduced in 1993. These discs were just the video, with a limited ability to skip chapters. No interactive menus at all.

·       Video-CD 2.0 – Published in July 1994, and introduced in April 1995 by Sony, Philips, Matsushita, and JVC, this version had more sophisticated features, like limited interactive menus, high resolution MPEG still image support, slide show options and the possible inclusion of CD-Audio tracks on the disc.

·       VCD-ROM – Introduced in 1997, these discs were a VCD/CD-ROM hybrid.

·       VCD-Internet – Introduced in 1997, this allowed videos to link to internet data.

 

An original Video-CD disc can store up to 74 minutes of MPEG-1 video, with MPEG-1 Layer 2 audio sampled at 44,100Hz, at a resolution of 352x240 pixels (NTSC), or 352x 288 (PAL). Later refinement squeezed 80 minutes of video. At the time of its introduction, most computers needed extra hardware to decompress and display MPEG video without buffering.

 

Matsushita launched the first dedicated consumer Video CD player, the Panasonic SC-VC 10, in April 1994.

 

Super Video CD

In the late-1990s the Chinese decided to develop an alternative video disc format to DVD, mostly due to concerns about restrictions and royalties, due to DVD been developed outside of China. It was hoped that the development of SVCD would help drive down the costs of DVD players and the formats royalties. They were three independent attempts at it.

·       C-Cube Microsystems (a maker of chips for Video CD players) was first, completing the specs for the China Video Disc (CVD) in 1997.

·       The government-backed China Recording Standards Committee, under direction from the Chinese Ministry of Information Industry, developed the Super video CD (SVCD), with support from ESS Technology.

·       The Video CD Consortium (the original creators of the Video CD) was late, creating the High-Quality Video CD (HQ-VCD).

The Chinese Ministry of Information and the Video CD Consortium later agreed to join forces, adding features from the HQ-VCD into the SVCD. But before that happened, the specs for SVCD were released in July 1998, and 600,000 CVD players had already been made. A compromise was made. The SVCD and CVD standards were combined to create the Chaoji (“Super”) VCD in November 1998, becoming China’s “official” next-gen video disc standard. The SVCD format was standardized as IEC 62107 in July 2000. Using MPEG-2 compression, the video on SVCDs is double the resolution of VCDs (480x480 (NTSC), 480x576 (PAL)), but to achieve this, their record time is halved (35 minutes per CD). But they do support 5.1 surround sound and multiple languages.

 

CD-i Bridge

This format is a CD-ROM XA with additional CD-I specs, which bridges CD-ROM and CD-i. This format, defined in the White Book, is the base of Video CDs and Photo CDs.

 

Blue Book (1995)

A problem with mixed mode CDs was that when a regular audio-only CD player played a track containing data, it’ll produce static that could damage speakers and, possibly, the listener’s hearing. Various manufacturers tried addressing this problem in a number of different confusing ways, many of which still allowed the data tracks to be played accidently. Philips, Sony, Apple, and Microsoft finally sorted out this mess (with some input from the Recording Industry Association of America) with the Blue Book, published in June 1995.

 

CD-Plus/Enhanced Music CD/CD Extra

These are audio CDs with additional multimedia content. Such CDs had been released before, but (in many of them) the multimedia part was recorded on track that had to be skipped manually. The Blue Book created a format that encoded the data in such a way a normal CD player can skip the data tracks automatically, like they’re not there. CDs following the Blue Book standards first appeared in July 1995.

 

The first Blue Book “CD Plus” was the Sugar album Besides, released July 1995. The extra content was a QuickTime video of the music video for single “Gee Angel.” The packaging has no mention of its extra content. It was publicized by word-and-mouth only. Why? Because, according to Lars Murray, director of special projects for record label Rykodisc, (to Billboard 29th July 1995) “We don’t want to promise something that we can’t necessarily deliver. Especially, it’s just a pure bonus for those who have the proper hardware and drivers to access it, and it’s not penalizing al all those who don’t.”

 

 

Scarlet Book (1999)

As technology and our knowledge of our hearing improved, some thought the 16-bit 44,100Hz sound recorded on CDs no longer cut it. It turns out sound frequencies above 20,000Hz are important for hearing and the sample rate used on CDs has trouble producing a good “sound stage” for accurate stereo reproduction. Our ears pick up minute differences in timing between the left and right speaker. So, Philips and Sony thought of creating a better CD. An improved CD, taking advantage in advances in technology. The Scarlet Book, specifying this “Super Audio CD,” was published in March 1999.

 

Super Audio CD

Launched in May 1999, the Super Audio CD is a more advanced form of CD. It’s basically a DVD that contains only ultra-high-quality audio, which has advanced copy protection. Philips and Sony developed a new system to encode this audio, which they called Direct Stream Digital. This method is believed to create the most accurate representation of sound ever achieved with digital technology. A SA-CD can (without using Direct Stream Transfer (DST – a lossless data compression method) store up to 110 minutes of audio, and up to six audio channels are possible, enabling SA-CDs to contain surround sound. Few saw the point of SA-CDs. Most were happy with regular CDs. However, it did find a place in the audiophile-sphere. The bestselling music genre sold on SA-CDs is classical music, which says everything.

 

Anatomy of a Super Audio CD

SA-CDs come in three varieties -

Single Layer discs just have one high density layer that can store up to 4.7GB of data. Most early SA-CDs were single-layered.

Dual Layer discs have two high density layers, which, in total, can store up to 8.5 GB of data. They are rare, almost only used for very long pieces of classical music.

Hybrid discs are basically a SA-CD and a regular CD sandwiched together, making it backwards compatable with normal CD players. Most SA-CDs are hybrids.

 

In hybrid SA-CDs, the layer containing the super audio is partly reflective. It is placed in front of the regular CD layer from the laser. If placed in a regular CD player, its 780 nm laser will shine through the high-density layer, reading the disc like it’s a regular CD. SA-CD and DVD players use a shorter wavelength laser (650nm), which can be reflected by the high-density layer.

 

The first SA-CD player, the 26kg (57 lb) Sony SCD-1, retailed for about $5,000 in 1999. It can play two-channel SA-CDs and regular CDs, and nothing else. A number of players were made by multiple manufacturers. Sony even made in-car SA-CD players. Some high-end Blu-ray players can also play SA-CDs, including the first two generations of the PlayStation 3.

 

The audio on SA-CDs is sampled 2,822.400 times a second (64 times that on regular CDs). But they are not recorded as 16-bit binary numbered values. Their encoded as a 1-bit stream that records the density of the sound wave, instead of its loudness.

 

Purple Book (2000)

Work on squeezing more storage space on the Compact Disc continued. In 2000 Sony published the Purple Book, covering the specs for Double Density CDs.

 

Double Density CDs

Developed by Sony, this 12-cm CD has narrower spaces between tracks (1,100 nm) and shorter pits (minimum length 623 nm) allowing it to store up to 1.3 GB of data. Launched in April 2001, only one DDCD recorder was ever made – the Sony CRX200E. Despite its initial price ($249 and $2-3 per blank disc) been lower than DVD-RW drives and discs at the time ($1000 and $10 per blank disc), few saw the point of DDCDs. DVDs can store a lot more than a DDCD, and became cheaper over time.

 

DualDisc

Introduced by the record companies Sony BMG, EMI, Universal Music, and Warner Music in October 2004, this double-sided disc is a DVD and an audio CD sandwiched together. Slightly thicker than normal CDs and DVDs, one side is a fully compliant DVD, while the other side is an “almost” CD (it doesn’t fully comply with Red Book standards).

 

The first DualDisc sold was Simple Plan’s Still Not Getting Any…, released in October 2004.

Small and non-round CDs

The majority of CDs are 12cm diameter round discs. But some were made that were smaller or non-round in shape. This is possible because CDs are read from inside then out, so after recording a small bit of information, a CD can be cut into any shape. However, it does limit what sort of CD player can play them.

Mini CDs

In 1987 the 8cm diameter Mini CD single was introduced. The idea was to emulate the 7-in single records that were sold along with 12-in LPs in the days of vinyl. They have the capacity to record up to 24 minutes of audio, or 210MB of data. But most were released with two music tracks, in the same tradition as the 45. The idea of releasing singles on Mini CDs died out in the west in the early-1990s, but continued on until the 2000s in Japan. Later on, it was mostly used to distribute software, such as the drivers for various computer peripherals.

Mini CD Machines

Some portable devices were made that used Mini CDs as their main storage medium (when flash memory was still expensive), such as a few small Mini CD MP3 players and digital cameras.

In 1988 Sony released the Discman D-88 – a pocket-size CD player that is smaller than a regular CD, designed mainly to play Mini CDs. It is 94.5 x 32.9 x 99 mm (3.7 x 1.3 x 3.9 in) big.

Sony Mavica MVC-CD1000 (2000)

In 2004 Sony released the MCS1 PhotoVault. It was a mini CD burner designed to burn photos stored on memory stick, USB flash drives, or straight from digital camera onto a mini CD “PC free.”

The MP3 file format increased how much music could be recorded on a Mini CD, leading to a number of mini CD players sold as MP3 players. A low density Mini-CD-R could store unto 156MB, or about 3 hours of MP3 files.

Compaq iPAQ Personal Mini-CD Player PM-1 (2001)

Memorex MPD8081 Pocket Player (2002)

Imation RipGO! Portable Mini CD burner (2002)

 Other Shapes

In 1996 The Flaming Lips released special edition of their single ‘This Here Giraffe’ on a star-shaped CD. It claims to be “The world's first ever shaped CD.” They are many other shaped CDs out there.

CD Cards

In 1997 Dean Procter of internet company Imaginet was offering “C-Cards” - business card shaped CD-ROMs that can contain full screen hi-fi stereo video on almost any PC.

In 1999 Duncan MacKinnon of Linuxcare thought of a novel way to distribute software at a trade show – a business card that is also a CD containing their software. The resulting “Bootable Business Cards” were given away at LinuxWorld Conference and Expo. These initial 10,000 discs, cut into the standard shape of a business card, contained 50MB of data.

Since then, a number of artists have released music on such cards.


Comments

  1. slot pg สล็อตออนไลน์ ค่าย พีจี ฝาก-ถอน ไม่มีอย่างน้อย เร็วทันใจด้วยระบบอัตโนมัติ สมัคร PGSLOT ก็สามารถสร้างรายได้ กับ PGSLOT พอดี pg-slot.game สล็อตเว็บไซต์ตรงชั้น 1

    ReplyDelete

Post a Comment