HDTVHDTV

By: SIDDHARTHAN.C By: SIDDHARTHAN.C

Analog vs. Digital SignalsAnalog vs. Digital Signals Analog transmission: the signal is transmitted in a continuous Analog transmission: the signal is transmitted in a continuous

signal that varies in amplitude. The signal can easily signal that varies in amplitude. The signal can easily deteriorate.deteriorate.

Digital transmission converts the analog television signal into Digital transmission converts the analog television signal into a series of digital bits. a series of digital bits.

Digital signals don't weaken with distance.Digital signals don't weaken with distance. No deterioration.No deterioration. Exact end-to-end reproduction, digital means better picture Exact end-to-end reproduction, digital means better picture

and sound quality, no matter what is broadcast.and sound quality, no matter what is broadcast.

VARIOUS FACTORS…VARIOUS FACTORS…

HDTV Sizes…HDTV Sizes…

Frame SizeFrame Size Frame sizeFrame size

Frame size is defined as the number of horizontal pixels times Frame size is defined as the number of horizontal pixels times the number of vertical pixels, e.g. 1280x720 or 1920x1080. the number of vertical pixels, e.g. 1280x720 or 1920x1080.

the different systems are usually referred to as 720 or 1080, the different systems are usually referred to as 720 or 1080,

an HDTV is two to five times larger.an HDTV is two to five times larger.

Application ExampleApplication Example

Frame rate…Frame rate…

Frame rate is defined as the number of image frames per Frame rate is defined as the number of image frames per second (fps). second (fps).

Aspect Ratio…Aspect Ratio…

Block Diagram of the HDTV video decoderBlock Diagram of the HDTV video decoder

Pin 1 TMDS Data2+Pin 2 TMDS Data2 ShieldPin 3 TMDS Data2–Pin 4 TMDS Data1+Pin 5 TMDS Data1 ShieldPin 6 TMDS Data1–

Pin 7 TMDS Data0+Pin 8 TMDS Data0 ShieldPin 9 TMDS Data0–Pin 10 TMDS Clock+Pin 11 TMDS Clock ShieldPin 12 TMDS Clock–

Pin 13 CECPin 14 Reserved (N.C. on device)Pin 15 SCLPin 16 SDAPin 17 DDC/CEC GroundPin 18 +5 V Power (max 50 mA)Pin 19 Hot Plug Detect

HDMI

TDMS (Transition Minimized Differential Signaling)

High Definition Media InterfaceHigh Definition Media Interface

Storage and CompressionStorage and Compression

Uncompressed 1080i HD 675GB/hourUncompressed 1080i HD 675GB/hour

Anamorphic stretching Anamorphic stretching MPEG-2 codecMPEG-2 codec

Anamorphic stretching Anamorphic stretching H.264 codec H.264 codec

THANKS FOR WATCHING THANKS FOR WATCHING MY PRESENTATION…MY PRESENTATION…