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This lecture covers device characteristics and formats
of CD's and DVD's
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
PCI, Peripheral Component Interconnect (bus) 528MB/sec
Firewire, IEEE 1394, 50MB/sec
SCSI, Small Computer System Interconnect, 320MB/sec
ATA, Advanced Technology Attachment (commands) read sector,
160MB/sec and SATA 150MB/sec to 300MB/sec
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 is not stable at this time.
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 drive and software for $299
Dual format
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