CD, DVD and SACD player

A Compact Disc player (often written as compact disc player), or CD player, is an electronic device which plays audio Compact Discs. CD players are often installed into home stereo systems, car audio systems, and personal computers. They are also manufactured as portable devices. Modern units support other formats in addition to CDs; such as DVDs, CD-ROMs with audio files and video CDs. DJs often use players with adjustable playback sampling rate to alter the pitch of the music programme. Many modern CD players also include the capability to play MP3 CD's. CD playback functionality is also available on all modern CD-ROM/DVD-ROM drive equipped computers as well as on DVD players and CD-ROM/DVD-ROM based game consoles. Download high resolution version (800x721, 223 KB)CD player from pixelquelle. ... Download high resolution version (800x721, 223 KB)CD player from pixelquelle. ... 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 České Dráhy (Czech Railways) Chad (NATO country code) Chalmers Datorförening (computer club of the Chalmers University of Technology) a 1960s... DVD (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. ... 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. ... A Compact Disc or CD is an optical disc used to store digital data, originally developed for storing digital audio. ... Label for 2. ... It has been suggested that In car entertainment be merged into this article or section. ... DVD (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. ... The CD-ROM (an abbreviation for Compact Disc Read-Only Memory (ROM)) is a non-volatile optical data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. ... Video CD (aka VCD, VideoCD, View CD, Compact Disc digital video) is a standard digital format for storing video on a Compact Disc. ... DJ or dj may stand for Disc jockey, dinner jacket The DeadJournal website, or Djibouti. ... Pitch is the perceived fundamental frequency of a sound. ... An MP3 CD is a term used to refer to compact discs (CD-R or CD-RW) that contain MP3 files. ... Playback could mean: Playback singing, a practice in Bollywood musicals. ... The Nintendo GameCube is an example of a popular video game console. ...

Physical description

A 1980s era Denon CD deck. This particular model was considered top-of-the-line for its time

Most home CD players are contained in a plastic casing, which also houses the electrical system and the user interface. CD players designed for car audio systems or computers generally have a front casing and exposed sides and back, as these parts will be covered by the car or computer. Image File history File links Download high resolution version (2273x628, 161 KB) Summary An early Denon DCD-1700 CD player made in the 1980s. ... Image File history File links Download high resolution version (2273x628, 161 KB) Summary An early Denon DCD-1700 CD player made in the 1980s. ... Denon is a Japanese electronics company that specializes in high-fidelity audio equipment. ... This article or section does not cite any references or sources. ... The user interface is the part of a system exposed to users. ...

The housing of a portable CD player also contains ports used to connect the player to a powered or unpowered speaker, headphones and/or a power system (see electrical wiring in the United States or in the UK). A portable CD player generally contains an internal power source in the form of batteries. In electronics, a jack is a socket. ... Powered speakers (or active speakers) are speakers that have built-in amplifiers. ... A passive speaker (or unpowered speaker) is a speaker which does not have its own power source and has to draw power from somewhere else, opposed to an active speaker which has a built in amplifier. ... // Fig. ... Electrical wiring in general refers to conductors used to carry electricity and their accessories. ... Four double-A batteries In science and technology, a battery is a device that stores energy and makes it available in an electrical form. ...

The housing of a stand-alone CD player contains speakers and perhaps a radio and/or tape deck. CD players used in component audio systems contain a power source, the user interface, and numerous ports to connect the player to the various parts of an audio system. In general, a tape recorder, tape deck, or tape machine is any device that records a fluctuating signal by moving a strip of magnetic tape across a tape head, which is a strong electromagnet. ...

Tray Design Evolution

Tray Loading

Sony released the world's first CD Player called the CDP-101^[1] in 1982 utilising a slide-out tray design for the CD. As it was easy to use and manufacture, most CD player tray designs had followed this style of tray ever since. However there have been some notable exceptions. Sony Corporation ) is a Japanese multinational corporation and one of the worlds largest media conglomerates with revenue of $68. ...

Vertical Loading

During the launch of the first prototype CD player 'Goronta'^[2] by Sony at the Japanese Audio Fair in 1981, Sony showcased the vertical loading design of the CD player. Although the prototype's design was never really put into actual production, it was for a time adopted for production by a number of early Japanese CD player manufacturers including Alpine/Luxman, Matsushita under the Technics brand, Kenwood and Toshiba/Aurex. For the early vertical loading players, Alpine sourced their AD-7100 player designs for Luxman^[3], Kenwood and Toshiba (using their Aurex brand). Kenwood added their 'Sigma Drive' outputs to this design as a modification. A picture of this early design can be seen on the Panasonic website.^[4] Sony Corporation ) is a Japanese multinational corporation and one of the worlds largest media conglomerates with revenue of $68. ... Luxman is a brand name of Japanese Luxman Corporation ), a company that produces a variety of audio electronic products. ... Logo for the Panasonic brand Matsushita Electric Industrial Co. ... Technics is a brand name of Japanese Matsushita Electric Industrial Co. ... Kenwood has multiple meanings, among them: Kenwood House in London, and its surrounding woods. ... Toshiba Corporations headquarters (Center) in Hamamatsucho, Tokyo Toshiba Corporation sales by division for year ending March, 31 2005 Toshiba Corporation ) (TYO: 6502 ) is a multinational high technology electrical and electronics manufacturing firm, headquartered in Tokyo, Japan. ...

Top Loading

Top-loading CD player and external DAC.

In 1983 at the launch of the CD format, Philips with their FD-1000 CD player^[5] (sold as Magnavox in the US), showcased the first top loading CD tray designs. The design had a clamp on the lid which meant the user had to close this over the CD when it was placed inside the machine. Apart from having no motors accessing a movable tray, thus interfering with the player's sound quality, as the disc was clamped right down within the player, it implied better sound quality. This was one of the primary reasons manufacturer Meridian created their MCD CD player,^[6] whose chassis design was derived from Philips FD-1000. Image File history File links Download high-resolution version (3000x2300, 461 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Audiophile ... Image File history File links Download high-resolution version (3000x2300, 461 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Audiophile ... In electronics, a digital-to-analog converter (DAC or D-to-A) is a device for converting a digital (usually binary) code to an analog signal (current, voltage or electric charge). ... 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. ... Magnavox (Latin for loud voice) is a consumer electronics company that is now part of Philips Consumer Electronics. ... Look up meridian in Wiktionary, the free dictionary. ... 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. ...

Apart from being adopted on various stereo equipment designs such as mini components, over the years only a handful of hi-fi quality top loading tray CD players had been made. The most notable were Luxman's D-500 and D-500X series^[7] players, and Denon's DP-S1,^[8] both launched in 1993. Luxman is a brand name of Japanese Luxman Corporation ), a company that produces a variety of audio electronic products. ... Denon is a Japanese electronics company that specializes in high-fidelity audio equipment. ...

Tray Load with Sliding Mechanism

Meridians 200 and 203 players were the first players to adopt tray loading with sliding play mechanism. Basically as the tray came out to collect the CD, the entire player's transport system also came out as one unit. The players were also the first to utilise the CD Transport design whereby the audio electronics were separate from the CD drive mechanism itself to reduce jitter and distortion. Look up meridian in Wiktionary, the free dictionary. ... In telecommunication, jitter is an abrupt and unwanted variation of one or more signal characteristics, such as the interval between successive pulses, the amplitude of successive cycles, or the frequency or phase of successive cycles. ... A distortion is the alteration of the original shape (or other characteristic) of an object, image, sound, waveform or other form of information or representation. ...

Tray Load with Dampers

A few companies produced CD players with dampened trays. The dampers were rubber grommets built into the tray to reduce distortion. Yamaha's CDX-1000 CD player was a good example of this design. Yamaha may refer to: Yamaha Corporation – A manufacturer of a diverse range of musical instruments and electronics. ...

Function

Teac CD player anatomy.

Philips Portable CD player disassembled.

A CD player has three major components: a drive motor, a lens system, and a tracking mechanism. The drive motor rotates the disc between 200 and 500 revolutions per minute. The tracking mechanism moves the lens system along the spiral tracks in which information is encoded, and the lens reads the information using a laser beam. The laser reads information by focusing a beam on the CD, which is reflected back to sensor. The sensor detects changes in the beam, and interprets these changes to read the data. This data is output as sound using a digital-to-analog converter (DAC). Image File history File links Size of this preview: 800 × 560 pixel Image in higher resolution (1122 × 785 pixel, file size: 262 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Compact Disc player... Image File history File links Size of this preview: 800 × 560 pixel Image in higher resolution (1122 × 785 pixel, file size: 262 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Compact Disc player... TEAC Corporation (ティアック) TYO: 6803 is an electronics company based in Japan. ... Image File history File linksMetadata Size of this preview: 674 × 600 pixel Image in higher resolution (700 × 623 pixel, file size: 74 KB, MIME type: image/jpeg) Philips portable CD player. ... Image File history File linksMetadata Size of this preview: 674 × 600 pixel Image in higher resolution (700 × 623 pixel, file size: 74 KB, MIME type: image/jpeg) Philips portable CD player. ... 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. ... A lens. ... For other uses, see Revolutions per minute (disambiguation). ... For alternative meanings see laser (disambiguation). ... Sound is a disturbance of mechanical energy that propagates through matter as a wave. ... In electronics, a digital-to-analog converter (DAC or D-to-A) is a device for converting a digital (usually binary) code to an analog signal (current, voltage or electric charge). ...

A subcode in an audio CD contains information on the total number of audio tracks, the running time on the CD, running time of each track, and other information. This information allows the drive motor to speed up or slow down as needed to read data at a constant rate. Besides digital audio, a Compact Disc contains digital data called subcode, which is multiplexed with the digital audio. ...

Interface

The interface of a CD player does not vary widely from manufacturer to manufacturer. It is usually comprised of a few buttons and a display device. Common buttons include play, pause, stop, advance/fast forward, back/rewind and, in the case of a multiple-CD player, disk selection. The display may provide information such as track number, track time, disk number in the case of multiple-CD changers and CD-Text. It has been suggested that this article or section be merged with Button (computing). ... It has been suggested that this article or section be merged into output device. ... CD-Text is an extension of the Red Book standard for audio CDs. ...

CD changer

A CD changer holds multiple Compact Discs, usually in a cartridge, and allows the user to access (or play) any of them, one at a time. CD changers are commonly found in home cinema systems, cars, and less often in computer equipment. A Compact Disc or CD is an optical disc used to store digital data, originally developed for storing digital audio. ... A 3 metres/119 inch projection screen with a high-definition television image. ... Karl Benzs Velo model (1894) - entered into the first automobile race An automobile or motor car (usually shortened to just car) is a wheeled passenger vehicle that carries its own motor. ... The NASA Columbia Supercomputer. ...

Prior art

Prior to real CD changers being introduced, an attempt was made to copy the double cassette players found in many audio systems. As a result, devices with two separate, fully functional CD players were made. Very few cassette changers were produced, mainly because a double-cassette deck could copy from one cassette to another. Double-CD decks, on the other hand, did not have this copy functionality since recordable CDs were not commercially available. Therefore, the shift to changers was swift, removing the need for double CD players. Typical 60-minute Compact Cassette. ...

Main types of CD changers

External cartridge

External cartridge for 6 CDs installed in the boot of a car.

External cartridge CD changers have one or more cartridges that the user loads with up to 10 different CDs and then inserts into the CD changer. The CD changer can then remove one CD at a time for playing. This type of player is commonly found in vehicles because the user can switch easily between large amounts of media contained in different cartridges. Image File history File links Download high resolution version (754x606, 88 KB) Summary Author: Joonga Licensing I, the creator of this work, hereby release it into the public domain. ... Image File history File links Download high resolution version (754x606, 88 KB) Summary Author: Joonga Licensing I, the creator of this work, hereby release it into the public domain. ... In various types of electronic equipment, a cartridge can refer one method of adding different functionality or content (e. ...

Internal cartridge

Internal cartridge for 5 CDs (external view)

Internal cartridge CD changers work on the same basic principle as external cartridge players, except the cartridge never leaves the CD player. This type of CD player accepts multiple CDs through a single slot and stores them internally. Image File history File links Cd_changer_internal_cartridge. ... Image File history File links Cd_changer_internal_cartridge. ...

Carousel

Carousel for 3 CDs

A carousel type CD changer consists of a circular platter that holds three or more CD's. Traditional carousel CD players hold three, five, or seven discs on a flat carousel tray. The carousel ejects to allow access to the CDs. Once back inside, the CD changer can rotate the carousel to access all of the CDs. Such carousel CD changers often allow the user to rotate the carousel while open, and change all CDs if no CDs are currently playing, or to eject the carousel while one CD is playing to change any CDs accessible from that position. Another type of carousel CD player is the mega-disc or "jukebox" CD players as they are also known. The hold anywhere from 50 to 300 discs. The mega-disc CD player holds it's discs in a vertical position in slots that located 360 degrees around the carousel. When a disc is selected to be played, the carousel rotates so that the disc can be picked up by a pickup mechanism and placed in CD playback unit. Mega-disc CD players generally have a means of entering in titles of the CD's stored inside them, such as telephone style letter input system found on the remote control, a full letter keypad on the unit, or by use of an external keyboard attached to the unit. Many units can also automatically obtain the title of a CD's if it contains CD-Text info stored on it. Image File history File links Cd_changer_carousel. ... Image File history File links Cd_changer_carousel. ... CD-Text is an extension of the Red Book standard for audio CDs. ...

Evolution

Digital audio players have surpassed the concept of CD changers. For example, the first generation iPod can hold an equivalent of 50 discs (1000 songs)^[9] with a 128k bit rate for each song; thereby, the iPod is 1/10 the size of a CD changer cartridge, and about 1/20 the size of a carousel changer. Solid state flash-based digital audio players have rendered compact discs and thus CD changers obsolete for some purposes. While digital audio players often use a lossy compression scheme, they usually can accept lossless formats such as WAV (PCM) as well, matching the quality of CD audio. Apple iPod, the most popular hard drive-based digital audio player An embedded hard drive-based player (Creative Zen Vision:M), one of the many alternatives for the iPod An MP3 CD player (Philips Expanium) Some mobile phones can be used as digital audio players, such as the Nokia 6233. ... iPod (fifth generation) in Apple Universal Dock, iPod nano (second generation) and iPod shuffle (second generation) iPod is a brand of portable media players designed and marketed by Apple and launched in 2001. ... In electronics, solid state circuits are those that do not contain vacuum tubes. ... A lossy data compression method is one where compressing data and then decompressing it retrieves data that may well be different from the original, but is close enough to be useful in some way. ... WAV (or WAVE), short for Waveform audio format, is a Microsoft and IBM audio file format standard for storing audio on PCs. ... Pulse-code modulation (PCM) is a digital representation of an analog signal where the magnitude of the signal is sampled regularly at uniform intervals, then quantized to a series of symbols in a digital (usually binary) code. ...

Computer-based changers

As file format size shrinks, the same capacity discs may be sufficient for growing needs of storage. However, the amount of storage space needed may be growing faster than current compression abilities can handle. As a result, newer disc formats have been created, such as DVD-ROM/DVD+/-R, DVD-RAM, Blu-Ray, HD DVD, and holographic discs. A file format is a particular way to encode information for storage in a computer file. ... Many different consumer electronic devices can store data. ... In computer science and information theory, data compression or source coding is the process of encoding information using fewer bits (or other information-bearing units) than an unencoded representation would use through use of specific encoding schemes. ... DVD (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. ... You can recognize a DVD-RAM immediately because visually there are lots of little rectangles distributed on the surface of the data carrier. ... Blu-ray discs Blu-ray Disc is a next-generation optical disc format jointly developed by a group of leading consumer electronics and PC companies called the Blu_ray Disc Association (BDA), which succeeds the Blu_ray Disc Founders (BDF). ... HD-DVD disc HD DVD (for High Density Digital Versatile Disc) is a digital optical media format which is being developed as one standard for high-definition DVD. HD DVD is similar to the competing Blu-ray Disc, which also uses the same CD sized (120 mm diameter) optical data... Picture of an HVD by Optware. ...

As consumer needs extend to the point where the cost of individual drives are prohibitive, CD changers can again become useful. Unfortunately, most disc changers are still intended primarily for large enterprises with large budgets.

See also

• Compact Cassette
• Compact Disc
• Hi-Fi
• High-end audio
• Jukebox
• MP3 CD
• Optical disc recorder
• Radio cassette
• Radio receiver, includes information about Radio CD.
• Record changer
• Transport (recording)

The Compact Cassette, often referred to as audio cassette, cassette tape, cassette, or simply tape, is a magnetic tape sound recording format. ... A Compact Disc or CD is an optical disc used to store digital data, originally developed for storing digital audio. ... High Fidelity is also the title of a book by Nick Hornby and a film directed by Stephen Frears, based upon Hornbys book. ... High-end audio is a term used to describe equipment that is purported by the manufacturers to be the best, regardless of the price. ... A Zodiac jukebox A jukebox is a partially automated music-playing device, usually a coin-operated machine, that can play specially selected songs from self-contained media. ... An MP3 CD is a term used to refer to compact discs (CD-R or CD-RW) that contain MP3 files. ... A CD recorder drive. ... The Compact Cassette, often referred to as audio cassette, cassette tape, cassette, or simply tape, is a magnetic tape sound recording format. ... For the device which is a tuner (radio) and a amplifier and/or loudspeaker, see receiver (home stereo). ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A transport is a device that handles a particular physical storage medium (such as magnetic tape, audio CD, CD-R, or other type of recordable media) itself, and extracts or records the information to and from the medium, to (and from) an outboard set of processing electronics that the transport...

Notes

1. ^ CDP-101 The first Compact Disc Audio CD Player from 1982 (2007). Retrieved on 2007-02-05.
2. ^ Sony History (2007). Retrieved on 2007-02-05.
3. ^ Luxman DX-104 CD Player (2007). Retrieved on 2007-02-17.
4. ^ Panasonic History - Innovative Products - 1982 - CD Player (2007). Retrieved on 2007-02-05.
5. ^ Audion Circuit Review - Magnavox FD1000 Compact Disc Player (2007). Retrieved on 2007-02-05.
6. ^ Meridian CD History (2007). Retrieved on 2007-02-05.
7. ^ Luxman D-500X (in Japanese) (2007). Retrieved on 2007-02-05.
8. ^ Denon Museum - Model History - 1993 - DP-S1 (in Japanese) (2007). Retrieved on 2007-02-05.
9. ^ http://www.apple.com/pr/library/2001/oct/23ipod.html

Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 36th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 36th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... February 17 is the 48th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 36th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 36th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 36th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 36th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is now the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 36th day of the year in the Gregorian calendar. ...

References

• The Audio Circuit A complete list of all brands who've developed CD-players
• "How CDs Work" at Howstuffworks.com
• Technical Information about CD players
• Info on mega-disc CD players