Monday, December 22, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Samsung Introduces SE790C Curved Monitor
Chinese Motion-sensing VR Glasses Coming On Kickstarter
Kodak Returns To CES With Consumer Product Line
North Korea Suggests Joint Inverstigation With U.S. Over Sony Hacking
T-Mobile to Pay $90 Million To Settle Case With FCC
New Trojan Targetted Banks Wordlwide
FBI Confirms North Korea Was Behind Sony Hack
Apple Responds To BBC's Allegations Over Working Conditions In Chinese Factory
Active Discussions
Digital Audio Extraction and Plextools
Will there be any trade in scheme for the coming PSP Go?
Hello, Glad to be Aboard!!!
Best optical drive for ripping CD's? My LG 4163B is mediocre.
Hi All!
cdrw trouble
CDR for car Sat Nav
DVD/DL for Optiarc 7191S at 8X
 Home > News > Optical Storage > High De...
Last 7 Days News : SU MO TU WE TH FR SA All News

Monday, July 18, 2005
High Definition Content Strongly Protected


The new content security scheme for high definition content stored on either HD-DVD and Blu-Ray media will be far more different than what you have experienced with curent DVDs.

The content protection issue seems to be crucial for both rival backers of high definition technology. Sony, Toshiba, Matsushita, Philips, under the pressure of the Hollywood movie Industry, have jointly made it clear that their technologies should fullfil the requierements that would ensure unauthorized copying, playback and distribution of HD content. And the solution they have come up with forms a new copy prevention scheme, which is different from the famous CSS (Content Scrambling System) used in DVD Video.

Consider the scenario where the HD contents of digital broadcasts are ought to be recorded on a Blu-Ray Rewritable (BD-RE) or a corresponding HD-DVD Recordable medium. First of all, the broadcast HD contents will include copy control information, as also happens in today's satellite TV programs.

Before the start of recording, copy control information within the digital broadcast signal is detected. If copying is allowed, (after content authentication interactivity occur as explained later) the contents and copy control information are encrypted and recorded on the disc. During playback, the recorded contents and copy control information will be decoded and output only from a device on which the contents protection technology is installed.

The High Density broadcast contents will be protected by using a 128-bit Advanced Encryption Standard (AES) encryption key. This key will change several hundred times during one minute of HD playback.

In addition, the copy protection scheme requires the use of a unique ID code for each disk. Both a Reneweal Key Block (RKB) and a Disc ID unique to the disc are written in the ROM area of the disc. Each legal recorder or player will have a device key, which differs depending on the manufacturer or the machine. An encryption key will be generated by combining the device key and the RKB. This will help the exclusion of illegal devices (System Renewability) and the prevention of illegal copying.

Therefore, illegal devices can be excluded by updating the RKB information, provided by the HD technology authorities (AACS). The RKB information will be stored in the player's ROM and will be possibly upgradable through the internet.

As a result, the encryption key will be generated by using the unique to each disc ID, making bit-by-bit copying ineffective.

In addition to such highly-secure coding during recording, the industry will implement the content protection technology in the interface that will output playback contents. The HDMI digital interface (DTCP protected) will be mainly used as an output / input of HD video and audio. This requires that your TV set should be compatible with HDMI, meaning that it should be equipped with such an input, in order to enjoy content in high definition format. Differently, passing the HDMI signal to the analogue port of your TV will mean a downgrade of the image resolution to 480 pixels.


Previous
Next
Apple to Soon Dive Into Music Videos        All News        Verbatim Announces Inkjet-printable DVD+R DL Media
Nero Digital Pro Compressor Available     Optical Storage News      Verbatim Announces Inkjet-printable DVD+R DL Media

Get RSS feed Easy Print E-Mail this Message

Related News
Blu-ray Movie Discs Used As Templates For Improving Solar Cell Performance
Pioneer Introduces New High-end Blu-ray Players At CEDIA
Blu-ray Discs For 4K Content And 4K Players Coming Next Year
New BD-DSD Blu-ray Disc Standard Allows Storing 200GB Of Data Per Disc
Optical Disc Sales Down
DVD And Blu-ray Discs Remain Popular in Britain
Blu-ray Disc Format Moving From Consumers To Professionals
Pioneer BDP-170 Blu-ray Disc Player Comes With Wi-Fi, Miracast And Youtube Connectivity
Sony And Panasonic Create New "Archival Disc" 300GB Optical Disc Standard
DVD And Blu-ray Discs Remain Preferred Sources of Video Content
TOSHIBA 2014 Symbio Streaming And Disc Players Coming in Q1
Samsung Says 4K Content Will Be Distributed In 125GB Blu-ray Disks

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .