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Lecture 26, DVR, DVD-RW, CDR, CD-RW


This lecture covers device characteristics and formats
of CD's and DVD's

It also covers aspects that bring together technology, business,
teaming and public buying patterns.


There are many "ports" that allow CD and DVD connection to a common PC.

    Parallel Port, IEEE 1284, about 2.5MB/sec

    USB2, Universal Serial Bus, 60MB/sec
    USB3, Universal Serial Bus, 600MB/sec some available in 2011

    PCI, Peripheral Component Interconnect (bus) 528MB/sec

    Firewire, IEEE 1394,   50MB/sec
    Firewire, IEEE 1394b, 400MB/sec
    Firewire, IEEE 1394c, 800MB/sec

    SCSI, Small Computer System Interconnect, 320MB/sec
    SCSI, up to                               640MB/sec

    ATA, Advanced Technology Attachment (commands) 160MB/sec
    SATA 150MB/sec to 300MB/sec
    SATA 3 to 750MB/sec = 6Gbit/sec

    Unfortunately, the fastest DVD's are much slower.

    CD and DVD drives can be found for many of these ports.

The "media" is the physical disk and typical names are:

  CD   a pre recorded disk
  CDR  a blank disk that can be recorded once
  CDRW a blank disk that can be recorded many times

  DVD     a pre recorded disk
  DVD-R   a blank disk, dash media, that can be recorded once
  DVD+R   a blank disk, plus media, that can be recorded once
  DVD-RW  a blank disk, dash media, that can be recorded many times
  DVD+RW  a blank disk, plus media, that can be recorded many times
  DVD-RAM a blank disk, RAM media, that can be recorded many times
  
  Blu Ray DVD pre recorded or recordable
  HD DVD      pre recorded or recordable

There are many formats that can be used for CD's
  Most of the varieties are audio formats.
  There is a VCD, Video CD format.
  The digital format is UDF, ISO 9660 compatible

DVD's chose to have only the UDF format
  The information on a DVD or CD using UDF is directories
  and files similar to any computer file system.
  Movies use a set of files in MPEG format within the UDF file system.

  In Windows, Windows Explorer or prompt command  dir
  or in Linux or any Unix, the command  ls  can be
  used to look at the directory structure of the UDF file system.

Here is one such listing. Note required directory name video_ts
and required file name video_ts for a DVD to play a movie.

 Volume in drive E is ITALIAN_JOB
 Volume Serial Number is 4E8F-DF0F

 Directory of E:\

08/12/2003  03:13 AM              VIDEO_TS
               0 File(s)              0 bytes

 Directory of E:\VIDEO_TS

08/12/2003  03:13 AM              .
08/12/2003  03:13 AM              ..
08/12/2003  03:13 AM            20,480 VIDEO_TS.BUP
08/12/2003  03:13 AM            20,480 VIDEO_TS.IFO
08/12/2003  03:13 AM           909,312 VIDEO_TS.VOB
08/12/2003  03:13 AM            18,432 VTS_01_0.BUP
08/12/2003  03:13 AM            18,432 VTS_01_0.IFO
08/12/2003  03:13 AM           268,288 VTS_01_0.VOB
08/12/2003  03:13 AM            10,240 VTS_01_1.VOB
08/12/2003  03:13 AM            22,528 VTS_02_0.BUP
08/12/2003  03:13 AM            22,528 VTS_02_0.IFO
08/12/2003  03:13 AM        16,521,216 VTS_02_0.VOB
08/12/2003  03:13 AM       387,725,312 VTS_02_1.VOB
08/12/2003  03:13 AM            28,672 VTS_03_0.BUP
08/12/2003  03:13 AM            28,672 VTS_03_0.IFO
08/12/2003  03:13 AM       760,942,592 VTS_03_1.VOB
08/12/2003  03:13 AM            79,872 VTS_04_0.BUP
08/12/2003  03:13 AM            79,872 VTS_04_0.IFO
08/12/2003  03:13 AM       103,512,064 VTS_04_0.VOB
08/12/2003  03:13 AM     1,073,709,056 VTS_04_1.VOB
08/12/2003  03:13 AM     1,073,709,056 VTS_04_2.VOB
08/12/2003  03:13 AM     1,073,709,056 VTS_04_3.VOB
08/12/2003  03:13 AM     1,073,709,056 VTS_04_4.VOB
08/12/2003  03:13 AM     1,073,709,056 VTS_04_5.VOB
08/12/2003  03:13 AM        18,653,184 VTS_04_6.VOB
08/12/2003  03:13 AM            38,912 VTS_05_0.BUP
08/12/2003  03:13 AM            38,912 VTS_05_0.IFO
08/12/2003  03:13 AM     1,073,709,056 VTS_05_1.VOB
08/12/2003  03:13 AM       343,238,656 VTS_05_2.VOB
08/12/2003  03:13 AM            14,336 VTS_06_0.BUP
08/12/2003  03:13 AM            14,336 VTS_06_0.IFO
08/12/2003  03:13 AM       136,196,096 VTS_06_1.VOB
              30 File(s)  8,210,677,760 bytes

     Total Files Listed:
              30 File(s)  8,210,677,760 bytes
               3 Dir(s)               0 bytes free


The speeds of CD's and DVD have a large range. Generally they
became faster as time passed and more were sold.

    CD                 DVD
    1X = 150KB/sec     1X =  1.38MB/sec
    2X = 300KB/sec     2X =  2.76MB/sec
   10X = 1.5MB/sec     4X =  5.52MB/sec
   20X = 3.0MB/sec     8X = 11 MB/sec
   40X = 6.0MB/sec    16X = 22 MB/sec

   Much slower than hard drives.

   Most drives can read at a higher speed than they can write.

Capacity:
  The disk capacity for CD's is from 74 to 80 minutes of music or
  650MB to 700MB of digital storage in UDF file system.

  DVD's have a wider range of storage from 2 to 4 hours of movies or
   4.7GB  single sided single layer
   7.9GB  single sided double layer
   9.4GB  double sided single layer
  15.9GB  double sided double layer

  Blu Ray and HD DVD are aiming for 20 to 40 hours of conventional
  movies or 4 to 8 hours of HDTV, high definition TV, 1080i  or
  hundreds of Gigabytes. The market was not stable for a time,
  and some technology, business, teaming and buying patterns
  are covered to show where we are now.

Technical information on CD's and DVD's

DVD and CD Writing Technology 

cont. 

Reviews 

Burn DVD using Linux

DVD-RW

Protecting, who?

Sony and friends vs. Toshiba and friends

Blue Ray vs. HD DVD



A prototype TDK 200GB blue laser disc would be able to hold a full
18 hours of high-definition video, the company said.




1/5/2007
First Combo High-Def DVD Player Announced
Oh man, is CES going to be good! Lots of disruptive products out there,
and I'm particularly excited about a new one from LG. The company
promises to show off the first combo/hybrid drive for Blu-ray and HD DVD,
possibly putting an end to the whole war for good. That's good news for
consumers, who have mostly ignored the new discs. Our story wraps up what
we know about LG's CES announcements, and also provides analysis as to
what it means, and why this is so cool. Check it out, and stay tuned to
our CES coverage all next week at www.pcmag.com/ces for all the
breakthroughs.

Get software to make your own DVD's

More HV vs Blu_ray, gamers view


Blu_ray vs HD_DVD origin



And a final straw. Walmart said it would only carry Blu_ray. HD_DVD faded into oblivion.

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