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Today's Webinar: Digital Video in the Classroom Presented to You Today’s Webinar: Digital Video In The Classroom Presented To You By: Lastar Is A Leading Manufacturer Of Low-Voltage Connectivity And Cabling Solutions C2G & Quiktron Are Sister Companies Of Lastar Today’s Webinar: Digital Video In The Classroom •Established In 1984 •More Than 800 Employees •Award-Winning, RapidRun Visit www.Lastar.com www.C2G.com For The Complete Story www.Quiktron.com www.RapidRun.com Phones Are Automatically Muted. Questions? 1. Raise Your Hand By Clicking On The “Hand” Icon 2. Use The Chat Function PowerPoint Slides & Recording Are Available: Please send an email to [email protected] if you would like a copy of today’s slides or the link to today’s recorded webinar If you’d like to chat or ask questions about this webinar on Twitter, we will be monitoring the conversation in real time, and we will respond to any questions or comments at the end of the webinar. #technothoughts This course qualifies for: 1 AIA-General Learning Unit 1 BICSI-Continuing Educational Credit 1 CTS-Renewal Unit 1 NCSA-Learning Unit 1. At the end of the webinar, a test link will be emailed to you by WebEx 2. You have 1 month to take the test and can take the test up to 2 times 3. You must score 70% or higher to receive your certificate of completion 4. Once we score your test, we will email you a certificate of completion 5. You must submit your certificate to AIA, BICSI, InfoComm, or NCSA to receive your credits 6. You must provide your AIA member number to your host to be eligible for AIA credit. This presentation is for informational purposes only, is subject to change without notice and should not be construed as offering any future product commitments on the part of Lastar, Inc. While significant effort has been made to ensure the accuracy of the information, Lastar, Inc. assumes no responsibility or liability for any errors, omissions or inaccuracies contained herein. Today’s Presentation: Digital Video In The Classroom Your Presenter Today is… Wally Cain, CTS Product Support Manager Our Agenda • What Make Video Digital? – Past, Present and Future – Formats And Feeds • The Network Connection – Understanding The Demands Of Streaming Media – The Challenges, And Consequences, Of Digital Copy Protection • Seeing The World In 3 Dimensions – Why 3D? – 3D Flavors • Proliferation Of Personal Panels – The Hand-Held Revolution And Classroom Infrastructure “Change before you have to.” ̶ Jack Welch MEDIA, ANALOG AND DIGITAL Looking Into The Rear View Mirror • Analog Video Displays An Image By Scanning A Beam Of Electrons Across The Screen – Uses A Pattern Of Horizontal Lines Known As A Raster. – At The End Of Each Line The Beam Returns To The Start Of The Next Line – At The End Of The Last Line It Returns To The Top Of The Screen. • As The Beam Passes Each Point The Intensity Of The Beam Is Varied – Luminance And Chrominance Changes In A Manner “Analogous” To The Original Input – Analog Color Video Technology Has Remained Substantially Unchanged Since Its Introduction In 1951 Analog Weakness • The Primary Disadvantage Of Any Analog System Is Noise – Signal Loss And Distortion – Limited Generational Fidelity • Analog Storage Systems Are Not Amenable To Data Compression – Stored (Recorded) Files Are Large And May Be Delicate (Magnetic Tape) – Duplicating Analog Files Trades Quality For Efficiency • High Quality Copies Are Slow to Make And Expensive – Random Access Is Difficult To Implement Technological Change • Peak Of The Rate Of Change Of The World's Capacity To Compute Information Was In 1998 – World's Technological Capacity To Compute Information Grew At 88% Per Year – Digital Files Deliver Maximum Efficiency In Information Storage • Moore’s Law Has Had Profound Effects – One Typewritten Page = 2 KB – One Novel = 1 MB – Complete Works Of Shakespeare = 5 MB – Pickup Truck Full Of Books = 1 GB – 1 Floor Of A Research Library = 100 GB – 50,000 Trees Made Into Paper And Printed = 1 TB The Digital Explosion • Digital Data Means Media Content Can Be Stored As Easily As Text – Written Word, Music And Audio Recordings, Video And Film All Become Available Via A Single User Terminal • Random Access Permits Creative Deployment Of Multimedia Content – “See” A Historical Speech While Studying Its Text, For Example • Community Knowledge Collections Take Information Into New Social Realms – Share Questions, Answers And Lines Of Inquiry – Easy Access To A Larger, More Diverse Base Of Information Along Comes Analog Sunset… • DRM Pushed Analog Connectivity To The Back Seat; Digital Wins! • Intel Corporation, AMD, Dell, Lenovo, Samsung Electronics And LG Display Move Away From Analog – After 2013, VGA Compatibility Will Be Missing From Many Desirable New Products • The Technology Utility Horizon Of Analog Video Infrastructure Is 5 Years… At Best! What Is TMDS? • Transition Minimized Differential Signalling – Basic Technology Behind DVI-D and HDMI – DisplayPort+ Enabled Devices Can Output TMDS Signals • Algorithm Creates A Special 10-Bit Sequence That Minimizes The 0-To-1 Transitions – In HDMI And DisplayPort Systems, Digital Audio Is Embedded Into The Digital Video Data Feed • “Differential” Indicates This Signal Travels Through Twisted Pair Wires – Just Like The Connections Used In Computer Networks • Digital Video Systems Use Anti-Theft Copy Protection Systems – HDCP, High-Bandwidth Digital Content Protection [Today we can] “connect displays, devices, and home-theater systems via standard protocols and interfaces like TCP/IP, Wi-Fi, USB and Wireless Home Digital Interface (WHDI). Robust and proven technology is needed to protect content transmitted in these scenarios and HDCP is evolving to meet this need” – Digital-CP.com DIGITAL RIGHTS MANAGEMENT High-Bandwidth Digital Copy Protection • HDCP Uses 3 Systems To Stop Encrypted Content From Being Played On Devices That Do Not Support HDCP ̶ Authentication Prevents Non-licensed Devices From Receiving Content. ̶ Encryption Of The Data Sent Over DisplayPort, DVI, HDMI Prevents Eavesdropping And Man-In-The-Middle Attacks. ̶ Key Revocation Prevents Devices That Have Been Compromised And Cloned From Receiving Data ̶ Utilizes Blom's Scheme, A Symmetric Threshold Key Exchange Protocol In Cryptography • Conditional Access Systems Perform Related Functions For Broadcast Or Streamed Content Limiting Digital • ICT ̶ Image Constraint Token – Activated By The Content Creator During The Mastering Process – Downgrades Native High-resolution (1080p) To A Standard-resolution For Analog Output • DOT ̶ Digital Only Token – Activated By The Content Creator During The Mastering Process – Prevents Any Display Via Analog Signal Connection Digital Millennium Copyright Act • DMCA Criminalizes Production And Dissemination Of Technology, Devices, Or Services Intended To Circumvent Measures (Commonly Known As Digital Rights Management Or DRM) That Control Access To Copyrighted Works. It Also Criminalizes The Act Of Circumventing An Access Control, Whether Or Not There Is Actual Infringement Of Copyright Itself • Short Version – You Can Not Convert From Digital To Analog! “Anyone who tries to make a distinction between education and entertainment doesn't know the first thing about either.” ̶ Marshall McLuhan MEDIA, NETWORK, CONTENT Video And Bandwidth Demands • Uncompressed 1080p Content From A Blu-ray Player Demands As Much As 10.2 Gbit/S Bandwidth • Cable Television HDTV Using MPEG-2 Compression Demands 38.8 Mbit/S Bandwidth – 25 Mbit/S Approximate - HDV 1080i – 19 Mbit/S Approximate - HDV 720p • “HDTV” Using MPEG-4 Demands An Average Of 8 Mbit/S Bandwidth • Streaming H.264/MPEG-4 Content Requires 6.25 Mbit/S Bandwidth • Real-time Entertainment, Aka Video And Music-streaming, Accounts For 45.7% Of Network Data “Comparing two groups of children, one taking 2D and the other a 3D lesson, the researchers have come upon amazing results. The lesson, which normally requires two to three class periods to complete, was taught in just one class period. The test results were astounding: in the first classroom (normal lesson), the control group test scores increased 9.7 percent. But the group that received its lesson in 3D saw a 35 percent increase!” - http://www.xpand.me/education/ ADDING DIMENSIONS Digital Video And “3D” Content • Anaglyph Systems – Typified By Color Filter Glasses That Use A Distinctive Color Lens For Each Eye – Only System Compatible With Analog Video • Polarized Systems – Use 2 Images “Pasted” Over Each Other – Each Polarized 3D Lens Contains A Different Filter Which Blocks The Opposing Polarized Light • Eclipse Systems – Typified By LCD shutter glass – Rapidly Blocks Images From Alternating Eye 3D Video Leverages Parallax To • Autostereoscopic Systems Create A Sensation Of Depth – "Glasses-free 3D" Or "Glassesless 3D“ Within An Image Why 3D In The Classroom? • Illinois - Students Exposed To Lessons Using 3D Presentation Technology “Saw A 35 Percent Increase” In Post- Lesson Test Scores – http://www.dlp.com/downloads/DLP_3D_Classroom 3_Case_Study.pdf • Florida – Students are “much more interested in the 3D lessons. When they see the glasses come out, they’re excited – even if the topic isn’t the most interesting one.” – http://www.dlp.com/downloads/DLP-Case-Study- ocoeeMiddleSchool.pdf • Colorado – “We firmly believe that 3D video will open up a world of new, enhanced learning by making visualization a core support for the curriculum” – http://www.dlp.com/downloads/DLP-CaseStudy- BoulderValley.pdf "Increasingly, the computers of the very near future will be the private property of individuals, and this will gradually
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