Panasonic CT-32D20 Operating Instructions Manual

Also see for CT-27D20: Operating manual Operating instructions Operating instructions

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Panasonic CT-32D20 Operating Instructions Manual Manual pdf 19 page image

FREOUENTLYASKED QUESTIONS ABOUT DIGITAL TVFrequently Asked Questions About Digital TVWhat is digital TV (DTV)?In April 1997, the FCC (Federal Communications Commission) announced that by2006, all television broadcasting will be digital. Digital TV broadcasting deliverscrystal-clear pictures, approaching the quality of 35mm movies and CD (compact disc)sound. Digital broadcasts include both High Definition Television (HDI-V) andStandard Definition Television (SDTV). Broadcasters may choose their own broadcastformats.HDTV (High Definition Television)One form of digital broadcasting is HDTV, which provides the highest resolutionpicture. Besides incredible picture, the sound is available in the 5.1 channel surroundsound.SDTV (Standard Definition Television)Another form of digital broadcasting is SDTV, which provides lower resolution, but stillpresents a very sharp, clear picture. Lower resolution allows broadcasters to transmitmore than one program per channel.When will TV stations start broadcasting digital signals?Television stations are required to continue broadcasting regular -IV signals alongside the digital signals until 2006. Cable -IV and satellite IV are not affected by thisFCC ruling.All stations are required to become digital by 2006. This will be an evolutionaryprocess. According to the FCC, digital broadcasting must be available in the top tenmarkets, covering 30% of households by May 1999. By the end of 1999, digitalbroadcasting must be available in the top 30 markets, covering 50% of households.Will I be able to adapt my current TV to receive digital broadcasts?Manufacturers will offer a digital TV set-top box (DTV-STB) which will allow currenttelevisions to display digitally broadcast programs. The picture and sound quality willbe about the same as small dish digital satellite systems today.Conventional televisions (non-digital televisions) will not be able to display the HDTVresolution quality or sound.What digital formats will broadcasters use?There are presently four DTV formats: 1080i (interlaced), 720p (progressive), 480iand 480p. The higher numbers indicate a higher resolution picture.In an interlaced picture, the odd numbered lines (picture information) are scanned firstcreating field 1 and then the even numbered lines are scanned, creating field 2. Thetwo fields are then interlaced to provide the entire image (one frame). This processhappens in 1/30 th of a second and is invisible to the human eye. In progressivescanning, all lines in the entire frame are scanned sequentially in 1/60 th of a second.Broadcasters may choose to transmit different levels of resolution throughout the day,broadcasting day programs in SD'I-V and night sports and movies in HDTV.

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