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DVD production

DVD / General Information

All DVD types listed comprise two substrates that have to be bonded together:

DVD TypeCapacityRecording Layer Reading Disc Type 
DVD 5 4,7 GB outer layer  from one side single-sided, single-layer
DVD 9 8,5 GB both layers  from one side single-sided, dual-layer 
DVD 10 9,4 GB both layers  from both sides double-sided, single-layer

 

Metal coating 

  • DVD 5 - only one layer is metallised, using aluminium
  • DVD 9 inner layer - metallised, using aluminium
  • outer layer - metallised, using silicon (semi-transparent)
  • DVD 10 - both layers metallised, using alluminium

Quality
Quality of each DVD is checked in the production process using a multistage checking procedure: 

  • Checking the extent of metallising
  • Checking the "bonding" (whether the adhesive is spread evenly)
  • Checking the mouldings (both Layer 0 and Layer 1)

Furthermore, all analogue and digital parameters of the DVD are measured and checked. DVD types. All DVD types listed comprise two substrates that have to be bonded together:

DVD Formats

At first glance, DVD disc looks the same as CD. It has the same diameter and thickness and uses the same non-contact method of reading data by laser beam. DVD recording capacity is several times higher than the CD's 0.65 GB.

There are several DVD formats:

  • DVD - video
  • DVD - data (ROM)
  • DVD - audio
  • DVD - hybrid

DVD - Video
MPEG-2 video, up to 8 audio language versions and up to 32 subtitle versions plus 9 various camera angles available. DVD -Video disc also features a navigation system for easy access to the particular information stored on the disc and to other functions.

DVD - ROM
uses the popular UDF/ISO (Universal Data Format /Industrial Standard Organisation) format readable under all PC operating systems that support UDF.

DVD - Audio
In addition to the large capacity provided by the DVD format, DVD - Audio's benefits include the possibility of storing a digital sound recording with a higher sampling frequency (48 kHz, 96 kHz or 192 kHz) and a greater data resolution (up to 24 bits for DVD - Audio instead of Audio CD's 16 bits).

DVD - Hybrid
is a combination of two or more formats.


The main benefits of the DVD technology are:

  • Superior image available in broadcast quality plus surround sound
  • Large capacity of the disc, allowing to store more than two hours of video on a DVD 5 disc
  • Interactivity, providing perfect (fast and easy) navigation within DVD title's structure, i.e. accurate access to any specific sequence of this huge volume of information stored on the disc or to a specified section of the video programme within one-second accuracy, as well as the availability of the repeat mode and the forward/reverse and fast/slow step motion
  • Disc's capability of holding up to 8 language versions, which can be arbitrarily switched between while viewing the title
  • Making use of up to more 32 text layers for subtitles in various languages, which the user can also change arbitrarily
  • A choice of up to 9 viewing angles accessible while watching the title
  • Up to 8-level security preventing access to selected information
  • Support for widescreen picture and the 16:9 aspect ratio (e.g. one side of a double-sided DVD 10 disc may contain the 4:3 presentation while the 16:9 presentation may be stored on the other side)
  • Discs indestructible by being played, resistant to magnetic field and easy to store
  • DVD format's versatility plus features encouraging its use for a wide range of human activities

 

 

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WHERE TO FIND US

Ragtime records, spol. s r. o.
Bohumínská 61, 710 00 Ostrava
Czech Republic

 

Tel./fax: +420 596 224 502
Tel./fax: +420 596 224 273
Email: info@ragtime.cz

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