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Robert Gibb Dominic Emilian Patrick Coletti Seth Berggren

teleCast. Robert Gibb Dominic Emilian Patrick Coletti Seth Berggren. Motivation. Current digital cable systems Long, clumsy wires Awkward jack placement One receiver box per TV . Other options Windows Media Center Extender AI Tech Wireless Cable

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Robert Gibb Dominic Emilian Patrick Coletti Seth Berggren

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  1. teleCast Robert Gibb Dominic Emilian Patrick Coletti Seth Berggren

  2. Motivation • Current digital cable systems • Long, clumsy wires • Awkward jack placement • One receiver box per TV • . Other options • Windows Media Center Extender • AI Tech Wireless Cable • ….Not everyone is a tech wiz. Most people prefer to just plug in and play Architecture Motivation Overview Requirements Plan 3

  3. Available Solutions AITech Wireless Cable TV: Limited Functionality • Need lots of expensive equipment to implement • Will take the average person a decent amount of time to set up (hardware and networking) • Can only broadcast one channel per transmitter • Need specialized remote to change channel Architecture Motivation Overview Requirements Plan 3

  4. Proposed Solution • Develop a system that would use radio frequencies to transmit cable signal. • Create a transmitter able to broadcast multiple channels to different TVs. • Create a receiver that will require no external control to receive broadcast. • Use a smart phone to control channel being watched on each TV. Architecture Motivation Overview Requirements Plan 2

  5. System Block Diagram Router Outlet Transmitter Smart-Phone/ Laptop AC/DC Converter Web Server Web Browser Micro- Controller Receiver TV Signal Processing Signal Processing Cable Architecture Motivation Overview Requirements Plan 7

  6. Requirements Specifications • Cost: Under $200 • Size: Transmitter box should be 8x6x2 or smaller. Receiver will be small enough to plug right into back of TV. • Easy to Control: Omni-directionally transition, easy to use interface • Multiplicity: transmit separate channels to up to four different TVs. • Security: Password protected user accounts on server, parental control • Legality: uses ISM bands • Ability: work at distances up to 150 feet. Architecture Motivation Overview Requirements Plan 4

  7. Technical Specifications • The demodulated signal will have an acceptable signal to noise ratio and signal strength so that the QAM tuner in the TV can decode the incoming signal • Power: The device will be powered by a 12VDC wall outlet power adaptor. • Reception at distances up to 150 feet • Maximum interference between adjacent channels will not degrade TV image • SNR 30dB • Impedance 75 Ohm • Bandwidth IF 6-800MHz • Temp -40C-85C • RF Frequencies 2.406-2.430MHz Architecture Motivation Overview Requirements Plan 4

  8. System Block Diagram: Red Version Timeline: PDR Architecture Motivation Overview Requirements Plan 6

  9. System Block Diagram Version Blue Timeline: PDR Architecture Motivation Overview Requirements Plan 6

  10. System Block Diagram Version Yellow Timeline: PDR FPR Architecture Motivation Overview Requirements Plan 5

  11. Design Challenges • Possible Transfer Protocols: • Asynchronous UART • Interfacing the web server with the microcontroller • Design of web server logic • Design of microcontroller commands • Design of microcontroller logic • Calibration for control of oscillators and BPFs • Displaying Digital Channels in a presentable fashion Architecture Motivation Overview Requirements Plan 5

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