Mini CD
| Storage medium Mini CD
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| General | |
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| Type | Optical storage medium |
| capacity | 20-210 MB |
| size | 8 cm |
The mini CD is a smaller format of the commercially available CD and is also available in their various standards ( CD-R / CD-RW ). It has a diameter of 8 cm. Usual capacities are 210 MB (23 minutes), 185 MB (21 minutes) or less. Most CD players today have recesses for playback. There used to be adapter rings for these CDs in stores. Most CD changers and slot-in drives cannot play mini-CDs and their special formats .
Special Mini-CD players (not to be confused with MiniDisc players ) could be used as particularly easily portable devices (typical dimensions: 8.5 cm × 9.5 cm × 1.7 cm , 145 g - values from CyberHome MP 8010 from 2003) only play optical data carriers up to the diameter (8 cm) of the mini CD. 20 minutes of music playing time from a mini CD was supplemented by a typical three hours capacity of the built-in memory for MP3 files (from CD or PC). Such players require an anti-shock memory (typically two minutes) in order to be able to bridge reading breaks after a shock.
marketing
At the end of the 1980s, the music industry began releasing singles on CD. Some record companies sat there for some time on the mini-CD that one in about the playing time with 45 / min playing 12 "vinyl - Single has. The target group were also users of CD Walkman (Discman) .
Most recently there was an attempt to market singles in mini-CD format on the German market from 2003 to 2005 under the name Pock it . The release of these CDs was a joint venture between the two major labels Sony Music and Universal Music . Almost all commercially successful singles that appeared in Germany during this period were released as a pock-it version. These versions only ever contained two tracks. However, these CDs were only moderately accepted by buyers, so that from 2005 they largely disappeared from the market.
Special formats
A special form is the business card CD (or business card CD ), which is cut on two or four sides to the size of a business card . It is often used for advertising purposes. Such a CD has a capacity of 20 to 50 MB, depending on the manufacturer. There are also special formats with 100 MB. In contrast to this, the so-called “card.21” with 30 MB is already manufactured using the injection molding process without milling.
Another special form are the freeform CDs or shape CDs . The CD can be cut into almost any shape. Such CDs should not be played in fast CD players, as they are often not "round", i. H. run with imbalance and can therefore lead to damage.
See also
supporting documents
- ↑ http://www.chip.de/artikel/10-tragbare-MP3-CD-Player-im-Test-11_12867692.html CyberHome MP 8010, chip.de from June 22, 2003, accessed on June 9, 2014
- ↑ http://www.amazon.de/dp/B00008IM7X/ Sony: Recording MD Walkman MZ-N510 Type-R (NetMD, MDLP4: 4CDs on a MiniDisc, 32x recording speed from the PC), amazon.de 89 €, accessed on June 9, 2014