gst-launch-0.10 -ev v4l2src ! queue ! deinterlace tff=1 fields=1 ! ffvideoscale method=9 ! video/x-raw-yuv,width=768,height=576 ! tee name=gltee ! queue max-size-buffers=1000 max-size-bytes=0 max-size-time=0 ! xvimagesink gltee. ! queue max-size-buffers=1000 max-size-bytes=0 max-size-time=0 ! xvimagesink gltee. ! queue max-size-buffers=1000 max-size-bytes=0 max-size-time=0 ! x264enc threads=0 pass=5 quantizer=30 me=1 subme=4 bframes=2 weightb=true qp-step=10 vbv-buf-capacity=300 ! rtph264pay config-interval=10 ! udpsink port=20000 host=224.1.2.3 alsasrc ! queue ! faac bitrate=128000 ! rtpmp4gpay ! udpsink port=20100 host=224.1.2.3

GStreamer Pipeline

Technical

Design

Kevin CrossanJames McCloskey

ProblemsBreakdowns of Chalkboard

Unable to view audience while writing

Constantly needs to look for and change chalk colors

Observations while using Tablet PC

Still uses chalkboard along with tablet

Physical interaction with digital medium

Solution

1. The podium accepts video output from a presenter's laptop and then displays the output on a touch screen.

2. The presenter is allowed to make pen annotations onto the screen, which are then sent to the projector.

3. The slides from the presenter, the annotations and the audio will be recorded as a video and can be uploaded to our web system.

4. Students can access the recorded lectures on our web system and add their own notes to that lecture.

User friendly touch screen podium

Cost

7 8 7 9 6 5

5 9 5 7 6 7

10 8 9 10 10 8

7 8 2 7 6 2

4 10 10 5 5 95 9 8 2 6 8

7 9 4 8 6 6

Attribute

TechImproved Learning

Ease of Teaching

Complete Solution

Lecture Availabil

ity

Ease of Implement

ationTablet PC

w/ video capture

Document Camera

Simulcast Lectures

Interactive boardsBlack board

PodcastVideo

podcast

Computer case picture

LCD Monitor picture

Presenter's Computer

VGA->S-Video converter box(Sabrent TV-PC85 )

Projector

19" LCD Touchscreen with stylus

VG

A

Embedded Computer

Hauppauge ImpactVCB

Y/C (S-Video)

Intel GMA 4500

VGA

DVI

Intel Core 2 Quad Q8300

8 GB Compact Flash

1 GB DDR2

Part Cost Shipping

AMD

$56.99 $2.99

$74.99 $0.00Subtotal $131.98 $2.99

Intel

$66.99 $2.99

$149.99 $0.99Subtotal $216.98 $3.98

Atom

$89.99 $7.56$59.99 $6.98

Subtotal $149.98 $14.54

Other

$24.99 $2.99

$26.49 $2.99

$6.99 $2.99

FSP Group ATX300-PA 300W ATX 12V (v2.2) Power Supply $24.99 $8.57

$24.99 $14.99

SABRENT PC to TV Converter Box TV-PC85 VGA Interface $32.99 $5.99

$41.99 $2.9919" LCD Touchscreen Panel Kit (4:3) $99.00 $15.29

$93.00 $0.00

$7.99 $2.99Stylus w/ screw terminal mountw/ 24" tether length $7.49 $1.95Subtotal $357.92 $55.75

$574.90 $71.35$532.90 $77.93$504.90 $66.38

ASRock K10N78M-PRO AM3/AM2+/AM2 NVIDIA GeForce 8200 Micro ATX AMD Motherboard AMD Athlon II X3 435 Rana 2.9GHz Socket AM3 95W Triple-Core Processor Model ADX435WFGIBOX

Intel BOXDG41TY LGA 775 Intel G41 Micro ATX Intel Motherboard Intel Core 2 Quad Q8300 Yorkfield 2.5GHz LGA 775 95W Quad-Core Desktop Processor Model BX80580Q8300

ECS 945GCD-M(1.0) Intel Atom 330 Intel 945GC Micro ATX Motherboard/CPU Combo

ZOTAC ZT-96SEQ3P-FDL GeForce 9600 GSO 256MB

CORSAIR XMS2 1GB 240-Pin DDR2 SDRAM DDR2 675 (PC2 5400) Desktop Memory Model CM2X1024-5400C4 Patriot 8GB Compact Flash (CF) 266X Flash Card Model PSF8G266CF SYBA SD-CF-IDE-DI IDE to Compact Flash Adapter ( Direct Insertion Mode)

APEX TX-381-C Black Steel Micro ATX Tower Computer Case

Hauppauge ImpactVCB Video Capture Card 558 PCI Interface

19" Dell UltraSharp 1905FP Black LCD Monitor

Rosewill 6 ft. Digital DVI-D Dual link cable Model RCW-401

Total (Intel) Total (Atom) Total (AMD)