1. 1 Balkaran Gill ( bxg28@cwru.edu ) Ramakrishnan Vijayakumar ( rxv20@cwru.edu ) ECES 488 – Prof Chris A. Papachristou

2. 2 Contents Introduction Specification Design Memory Analysis Components Controller Results and Waveforms Cost Analysis Marketing Analysis Testing and Debugging Conclusion

3. 3 Introduction Motivation: Uses DSL lines Video Transmission (Interactive) Present

4. 4 Specification Modes of Operation Call Play Back and Recording Mode - Voice only and Video Only Video Transmission is carried out according to the H.320 format. Must Communicate with analog phones Handles Basic Answering Machine Features. 30 ( Two Minute ) audio messages stored at a time. 10 Video Messages ( One Minute) stored at a time Record Video Option which allows the user to store video.

5. 5 Specification The Video Phone has the following buttons Play – Plays the Stored Messages in the order according to (Forward/Reverse) the button pressed. Delete/Undelete – Deletes or Undelete the messages.Undelete can retrieve the last two deleted messages. Skip – To Skip the present message. Save – To Save the current message. Memo – Record a Memo as a voice message. Stop – To Stop the Current playback. rec ann – To Record the announcement. hear ann – To Hear the announcement.

6. 6 Video Standards - H.320 Video Transmission –RTP Protocol Used –Uses IP Multicast –Derivative of UDP wherein a time stamp and sequence number is added to the packet header –Using this information receiving client can Reorder out of sequence packets Discard Duplicates Synchronize audio and video after an initial buffering period –Real Time Control Protocol used to control RTP Reference - http://www.teamsolutions.co.uk/tsstds.html

7. 7 Design Parts of the Controller we are implementing »RAM »Controller

8. 8 Block Diagram Storage Controller Memory Network Interface Unit Media Processing Unit Display Speaker Camera LCD Display Controller

9. 9 Memory Analysis Audio (8000 samples/sec * 16 bits/sample)*120 sec * (8 bits/byte) = 1920 KB per 2 min message At 10:1 MPEG compression = 192 KB per 2 min message 30 Messages – 5.6 MB of memory Video (320*240 resolution) *3 * 8 (color display) *30 (fps) =52.7 Mbps (Million Bits per second) 100:1 MPEG Compression Ratio =.527 Mbps Length of the message is 60 sec = 31.62 Mb 10 video messages - 316.2 Mb = 40MB

10. 10 Memory Analysis Total Memory needed for Audio and Video = 46MB 64MB ram would be needed The rest of 16 MB could be used for other purposes

11. 11 Components Memory CompactFlash Memory Card (CF 64 MB) type I http://www.kingston.com/flash/compfl.asp#prod Design Decisions Why Flash Memory ? Easy and Fast Information Storage Maintains data without any external power Very light and Noiseless Why CompactFlash Memory Card? Cheapest among those available Other Brands »Sandisk - $ 85 »Delkin - $ 120 Dimensions - 36.4mm x 42.8mm x 3.3mm Memory Capacity – Up to 256 MB Endurance – 300,000 cycles per logical sector Data Retention – 64 years Operating Temperature - -25 to 75 c Media Transfer Rate – Up to 3.5 Mb/sec Interface Transfer Rate – Up to 8 Mb/sec

12. 12 Components Digital Signal Processor Texas Instruments TMS320C6415 – 600 Why Texas Instrument’s DSP ? Latest and Important use in Broadband and Imaging Systems Specialized DSP’s not produced by other companies like Motorola,Intel for our system Cycle time of 1.67 ns 128Kb L1D Data Cache; 128Kb L1P Program Cache; 8Mb L2 Cache 64-channel EDMA controller with a highly-efficient transfer engine 1 – 32/16 –bit HPI, 1 – 32 bit PCI Two external memory interfaces (EMIFs) – one 64-bit EMIFA and one 16-bit EMIFB – to asynchronous/synchronous memories Three Multichannel Buffered Serial Ports (McBSPs) provide over 1.8 GBytes of bandwidth supporting a variety of audio and telecom standards

13. 13 Components Camera Panasonic color board camera GP- CX161 Series Decisions to take –Why Panasonic ? Uses a built- in 10- bit DSP Comparatively Cheap Horizontal Scanning Frequency = 15.734 khz Vertical Scanning Frequency = 59.94 khz 30 frames per second Resolution: Horizontal Min: 330 lines, Vertical Min: 350 lines. Dimensions: 26mm( W) x 22 mm( H) x 13. 3 mm (D) Power Consumption: 160mA (5V input logic)

14. 14 Components Analog to Digital Converter Texas InstrumentsTLC320AD57 Single 5-V Power Supply Sample Rates (f s ) up to 48 kHz 18-Bit Resolution Signal-to-Noise (EIAJ) of 97 dB Dynamic Range of 95 dB Total Signal-to-Noise+Distortion of 91 dB Serial Port Interface Power Dissipation of 200 mW.

15. 15 Components Digital to Analog Converter Texas Instruments PCM69 18-Bit Resolution Dual Audio DAC High S/N Ratio: 110dB type (IHF-A) Single Supply +5V Operation Low Power: 75mW typical Operating Temp Range: -25°C TO +85°C Extremely Low Glitch Energy

16. 16 Components LCD Display NEC 5.5” Analog QVGA Number of pixels - 320 x 240 Colors - Full Color Viewing angles - ± 50° (L/R), ± 25° (U/D) Typical luminance - 250 cd/m 2 Typical power consumption - 8.0 Watts Input signals - Analog RGB and NTSC mode Dimensions (mm) - 134.0 W x 110.0 H x 16.5 D LCD Display Controller

17. 17 Components Microphones Panasonic RP–VK18 1/8" mini plug with 1/4" standard phono plug adaptor Mic. stand Frequency response 90Hz-10kHz Speakers Panasonic RP-HVS20 Frequency response 20Hz-20kHz Power handling capacity 400mW+400mW (passive speaker) Power Supply – 5V

18. 18 Controller State Diagrams Recording a Message Placing a Call and Sending a Message Receiving a Message Play Back Simulation and Implementation in VHDL (in progress)

19. 19 Controller State Diagram of Recording a Message Check the number of messages Turn on the Warning Turn off the warning Generate memory address and record message & inc message counter Delete the first message and decrement message counter Hang Up Message counter = 24 Message Counter = 30 Memory Page is full Reset Warning Message = [1- 23],[24-29] Memo Button

20. 20 Talk Button Press Digits Is line Busy Display ‘Connecting’ Start voice Chatting Start Image Processing and send video Voice and Video Chatting Hang-up Video Button Pressed State Diagram of Sending a Message Controller

21. 21 Go to record a message Voice chat Call mode Modem ringing Hang up Beep Play announcement Caller hanged up Talk button If modem rings more than 4 times Talk button Controller State Diagram of Receiving a Message

22. 22 Play message and message count Increment the message count and go to play message Decrement the message count and go to play message Delete the current message and decrement the message count Undelete the last message and increment the message count Play forward Delete message Undelete message Play reverse Play Controller State Diagram of Play Back

23. 23 Controller Record an announcement Delete the previous announcement Record new announcement Exit Allotted memory full/ record button Record button

24. 24 Block Diagram of Controller

25. 25 Output Waveforms

26. 26 Cost Analysis ProductsCost Memory (Flash Type)$65.00 Digital Signal Processor (in qty 1000+) $65.00 Camera$54.00 Analog to Digital Converter (in qty 1000+)$4.63 Digital to Analog Converter (in qty 1000+)$10.00 LCD Display (in qty 100+)$75.00 LCD Controller (in qty 100+)$4.50 Microphone $5.00 Speaker $8.00 Power Supply (in qty 100+)$5.00 Design Costs $75,000 per 1 worker - 5 workers for 1 year – 375000/50000 units$7.50 Manufacturing Costs - $ 5,00,000/50000 units$10.00 Cost per unit$313.13 10% profit $ 31.31 Total Cost per unit$344.44

27. 27 Marketing Analysis Panasonic Video Phone PAC 2000 - $1300 POTS line Very costly Small Screen for Display Aiptek HyperVphone 2000T - $550 POTS line Supports only 15 fps Aiptek HyperVphone 2000M - $350 POTS line

28. 28 Conclusion Lessons Learned VHDL Coding SYNOPSYS is great. Design and Implementation in progress