Digital Broadcasting Future Development Directions Vincent Brulia Noah Ludington

Short History of Wireless Communications - Radio Transmitter - Wireless Telegraph - Telephones - Early Computers - Local Networks - The Internet (Not created by Al Gore) Early transmissions were, in fact, digital. Nothing was nearly was sophisticated as today’s technology

Digital Video Broadcasting All television broadcasts will be switched to fully digital on February 19, Why digitally broadcast? - It’s more efficient - It’s more flexible - It will use the same infrastructure (Won’t cost more to use) - It uses less bandwidth, which means more programming options

Digital Video Broadcasting Digital Broadcasts include the possibility of holographic television picture. - Old televisions can still be used with a set-top box that converts the digital signal - While it is has many advantages, nothing is quite as “on demand” as the Internet.

Digital Audio Broadcasting Kudos to the person that guesses from which program this is. The radio equivalent of Digital TV. Why digitally broadcast? - Signal Multiplexing - Filters out interference - Barriers actually improve signal - Transmit other information - Improved quality of sound

Digital Multimedia Broadcasting Two types of DMB: - Terrestrial and Satellite. Terrestrial DMB was modeled after EU147 (Digital Audio Broadcasting), which was developed in Europe. Japan first showed their DMB receiver (pictured above) in DMB was developed in South Korea as an improved version of DAB. Providing even higher quality audio. DMB utilizes lower frequencies, from 180MHz to 210MHz. This allows the avoidance of shadow zones

Digital Broadcasting IS the Future! 3D HDTV would require over 410,000 HD pixels at a rate of 59.94MHz The future of digital broadcasting promises not only higher quality picture and sound, but will utilize a technology in which laser light is disrupted to create a 3D Holographic Projection.