Name: Debjit, aka "Debjit Biswas"
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Why LED TV …
August 12th, 2010
LED TV-Redefining viewership
LED TV is the latest television model which has been introduced in the market already flooded with other high-definition television sets. There is immense curiosity about this newly launched product and consumers are keen to find out its special features that set it apart from the others.
LED (Light Emitting Diode) TV is actually a LCD TV made up of liquid crystals but comes with a different kind of backlighting. Instead of Cold Cathode Fluorescent Lamps (CFFL), which is used in a LCD TV, LED backlights are used.
The CFFLs used in LCDs are quite similar to the lamps used at home. They light up the LCD screen which is made up of pixels. Individual pixel either allows the light to show white or blocks it to show black. Each pixel has 3 sub pixels like red, green and blue which bring out the colour. But the product suffers from light leakage; the backlight cannot be fully obstructed in dark regions of the screen. As a result the dark regions of the screen are not dark enough.
But the LED TV is more effective in reducing the light leakage. There are two types of LED TV – RGB LED and Edge LED. The RGB LED TV allows local dimming. A backlight local dimming algorithm is applied to achieve high static contrast. Static contrast means the contrast between the maximal and minimal pixel brightness in the same frame. Backlight local dimming system reduces the light leakage which gives excellent on-screen contrast. The technology is such that The LEDs can be dimmed in different regions of the screen simultaneously. RGB LED TV also provides a wider colour gamut.
On the other hand the Edge LED lighting produces TV sets which are slimmer than LCDs since backlights are placed along the edge of the screen. Moreover LEDs consume less power than LCDs.
Classical Physics for Engineering Students
February 14th, 2010
Key Features
For the students of B.E, B.Tech & B.Sc.(Hons)
& also for NET, SET &GATE examinees|
Comprehensive Discussions on Basic Concepts
Book Name: A Textbook on Classical Engineering Physics
Book Type: Educational Book on Engineering Physics
Author: Dr. Amal Chakrabarty
Language: English
Complexity: Higher Level
Open a PDF Preview To download the PDF: Right click o n the link and click “Save link as…”
Modern Physics for Engineering Students
February 14th, 2010
Key Features
Comprehensive discussions on basic concepts
Simple tips under the heading ‘Special Note’
Book Name: A Textbook on Modern Engineering Physics
Book Type: Educational Book on Engineering Physics
Author: Dr. Amal Chakrabarty
Language: English
Complexity: Higher Level
Open a PDF Preview To download the PDF: Right click o n the link and click “Save link as…”
Mechanics for Engineering Students
February 14th, 2010
Key Features
Fully Covers the Syllabus of all Leading Indian Universities
Challenging & Thought Provoking Problems as exercise work
Book Name: Fundamentals of Engineering Mechanics
Book Type: Educational Book on Engineering Mechanics
Author: Dr. Debabrata Nag, Dr. Abhijit Chanda
Language: English
Complexity: Higher Level
Open a PDF Preview To download the PDF: Right click o n the link and click “Save link as…”
