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Dvd -r/-rw , +r/+rw ?

Discussão em 'Dúvidas e Suporte Técnico PC' iniciada por Baía, 1 de Março de 2003. (Respostas: 6; Visualizações: 700)

  1. Baía

    Baía Power Member

    Para os que estão mais dentro do assunto gostava de saber a vossa opinião acerca de qual destes dois formatos o +/- irá triunfar no mercado!!!
    Pelo lado do -(R/RW) conheço:
    -Toshiba
    -Pioneer
    Pelo lado da +(R/RW) conheço:
    -HP
    Pelos dois +(R/RW),-(R/RW) a Sony lançou agora um novo modelo de gravação de DVD's... no entanto isto embora possa parecer bastante bom por agora.. no futuro será supérfluo... pois só um dos formatos prevalecerá... qual é que vocês acham que será?
     
  2. chight

    chight Power Member

    Só para clarificar:

    "Today does it exist three competing DVD recording standards:

    DVD-R and DVD-RW
    DVD-R/W was the first DVD recording format released that was compatible with standalone DVD Players.
    DVD-R is a non-rewriteable format and it is compatible with about 88% of all DVD Players and DVD-ROMs.
    DVD-RW is a rewriteable format and it is compatible with about 69% of all DVD Players and DVD-ROMs.
    DVD-R/W supports single side 4.7 GB* DVDs(called DVD-5) and double side 9.4 GB* DVDs(called DVD-10).
    These formats are supported by DVDForum.

    DVD+R and DVD+RW
    DVD+R/W has some better features than DVD-R/W such as lossless linking and both CAV and CLV writing.
    DVD+R is a non-rewritable format and it is compatible with about 84% of all DVD Players and DVD-ROMs.
    DVD+RW is a rewritable format and is compatible with about 70% of all DVD Players and DVD-ROMs.
    DVD+R/W supports single side 4.7 GB* DVDs(called DVD-5) and double side 9.4 GB* DVDs(called DVD-10).
    These formats are supported by the DVD+RW Alliance.

    DVD-RAM
    DVD-RAM has the best recording features but it is not compatible with most DVD-ROM drives and DVD-Video players. Think more of it as a removable hard disk. This format is supported by DVDForum."

    Suporte dos diferentes tipos de DVD pelos respectivos métodos acima:

    "What is DVD-5, single layer, DVD-9, dual layer, DVD-10, double side? is it 4.7GB or 4.37GB?
    DVD-5 is a single layer DVD that stores up to about 4 700 000 000 bytes and that is 4.37 computer GigaBytes where 1 kilobyte is 1024 bytes (4 700 000 000 / 1024 = about 4589843KB / 1024 = about 4482MB / 1024 = about 4.37GB). So why does it says 4.7 GB on the DVDrs? Because they are not using computer GigaBytes, they use standard kilo where 1 kilobyte is 1000 bytes. DVD-R/W and DVD+R/W supports this format.

    DVD-9 is a dual layer DVD which can fit up to 7.95 computer GB which many commercial DVDs are using today(a DVD-9 is basicly two special DVD-5s pressed together). DVD-R/W and DVD+R/W does not support this format.

    DVD-10 is a double side DVD that stores up to 8.7 computer GB, double side means that you burn on both side on the DVD. DVD-R/W and DVD+R/W supports this format."
     
  3. Rudzer

    Rudzer Power Member

    DVD-R all the way ;)

    mais barato, compativel, facil de adquirir,etc.. :)
     
  4. Baía

    Baía Power Member

    Mais barato??

    A drive creio que é concerteza... mas os discos...
    um +RW da HP custa à volta de 4.5 € -> 900$
    um -RW da Sony custa à volta de 17 € -> 3590$ :eek:
    (preços da Vobis)

    Compatível??

    Qualquer leitor de DVD que compres agora suporta ambos os formatos!!! O problema não está na leitura... está mesmo é na gravação... Não sabia que o formato + tinha vantagens sobre o - ... se assim o é... creio que este talvez tenha maiores hipóteses de sobreviver!!!!

    Fácil de adquirir??

    A HP é a HP...
     
  5. jfbbms

    jfbbms Power Member

    mas por exemplo, os +R sao mais caros ( prai 2 contos ) que os -R ( princo a 2X ) que tenho visto que custam 400 paus....


     
    Última edição: 1 de Março de 2003
  6. Baía

    Baía Power Member

    Mais barato 2 cts é impossível... um TDK custa 1400 paus...
     
  7. Baía

    Baía Power Member

    Ok, estive a averiguar um pouco mais sobre o assunto e descobri que o DVD Forum (cujos membros são a Hitachi, Pioneer e Panasonic) apoiam o formato -R/RW e RAM...
    E a DVD Alliance (cujos membros são a Sony, Hewlett-Packard/Compaq e Dell) dão o apoio ao +R/RW...

    Assim como tb descobri este artigo:
    http://zdnet.com.com/2100-1103-807602.html

    E estes 2 parágrafos chamaram-me à atenção:

    "As for consumer preference, DVD-RW is seen as mainly for people looking to record video and then play it on consumer DVD players. That's because to store new files, the disc must first be erased entirely.

    The DVD+RW and DVD-RAM formats are seen as having the upper hand for data storage because they allow people to store and erase files in the same way they can on a hard drive. Spofford said that the software for DVD+RW drives does not yet enable people to randomly store data, but he added that a software patch will be available soon."
     
    Última edição: 2 de Março de 2003

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