Technology

DLP trounces Plasma technology in quality and size

















NEW DELHI: The once humble video projector may be now giving Plasma TVs a run for their money, with pin-head clarity of high contrast pictures to get an image that goes far beyond the 42" Plasma screen… Optoma, the manufacturers of the latest DLP say home screens ca now go up to 200 inches!


Up until now, in recent years LCDs and Plasma TVs had been the rage, but now, a reinvented technology has arrived on the scene that may change the whole big screen TV concept forever. It is the DLP, or Digital Light Processing.


The key to DLP is the DMD (Digital Micro-mirror Device).

 

In essence, every pixel on a DLP chip is a reflective mirror, which amplifies the light generated from the chip.


Since the light generated by each pixel has its own amplification ability, there is no limit to the size of the screen that can be manufactured. Brightness and contrast is even across the entire surface of the screen.

 

The advantage of DLP is two-fold:
* It produces bright, high-contrast images, viewable from a wide angle, and (2) It can be projected onto any size screen (from home theater setups to movie theater setups), with equal image quality; and
* With the advent of HDTV, DLP is the best option for reproducing high-resolution projected images.


On the industrial front, DLP is being used in large projection screen applications such as concert venues and movie theaters.


Several films have been released to special take advantage of DLP projection technology, including: Star Wars: Episode I, Mission To Mars, Toy Story 2, Rocky and Bullwinkle, Disney‘s Dinosaur, and Spy Kids.


In a recent BBC feature on its technology programme, Click, it said that domestic video projectors come in two different flavours: LCD or DLP.


The brainchild of Texas Instruments, Digital Light Processing (DLP) first appeared 20 years ago. In video projectors the key to DLP are optical semiconductors covered in millions of tiny mirrors.


These mirrors reflect light which is projected onto them, and each mirror represents an individual pixel. The higher the resolution the more mirrors are required.


Bob Johnson of Optoma told BBC‘s Click on April 16: "It‘s a digital device, whereas the majority of the other technologies are all analogue devices. So if you‘re using an HD DVD player or your normal home DVD player, that‘s a digital device, you get a digital image on your screen."


There is one drawback to DLP technology.


In order for the chips to produce colour images, a spinning wheel fitted with coloured filters is placed in front of the chip. When this wheel spins it can create an effect which looks like rainbow patterns appearing around the pixels. This can be a bit irritating.


LCD projectors don‘t enjoy the same level of contrast or dark blacks that DLPs produce, and up close some individual pixels can be visible as squares. There is however a price difference - many LCD projectors are cheaper than their DLP counterparts.


Improvements in lamp technology mean that a wide variety of the bulbs that are fitted to the current generation of video projectors are so bright they can viewed in almost daylight conditions.


And as LCD screens have embraced HD 1080P resolution so to have video projectors. So it‘s possible to use projectors in rooms that aren‘t as dark as your local multiplex - and with HD support, movies, TV and video games now look pin sharp.


But if you‘re planning to ditch the TV in favour of a projector what sort of features should you be looking out for?


Picture size is altered by the distance the projector is away from the screen, known as ‘throw‘. As a rule of thumb about 10ft away from a wall or a screen will produce an image of 100 inches.


It‘s important to select a projector and bulb which can produce a sufficient amount of light to work in a domestic setting. Known as the lumen value, this allows you to know how bright a bulb is. For a room which has ambient lighting in it a bulb which produces in excess of 1200 lumens will be required.


Projectors used to make more noise than a normal TV due to fans that are needed to cool the unit down. Although modern projectors are considerably quieter than their forebears, fan noise is still evident.


The biggest drawback is the cost of replacement lamps. Lamps usually last around 2000 to 3000 hours, but after that it‘s time for a new one and this can be expensive, in some cases up to ?400. But overall prices of domestic projectors have dropped. It‘s possible to get a DLP HD -ready projector for around ?700, which compares favourably with large LCD or Plasma screens.


Great big video projectors are fine if you‘ve got a great big home to put them in, but if there‘s a shortage of space a tiny little DLP projector can provide a solution to the problem.


And as laser technology becomes introduced to projectors they are going to get even smaller.


There is a company in the United States that‘s developing a projector which is so small it will fit inside a mobile phone.

 
 

Latest Reads

http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/05/16/divesh.jpg?itok=WN0NPBYn
Livestreaming App SWOO sees momentum in India; Launches Trivia Format in India

SWOO, a leading global livestreaming platform established in Middle East, today announced the launch of its SWOO TRIVIA SHOW – a celebrity hosted live video streaming game show for Indians. SWOO is a user friendly, engaging and feature-rich live broadcasting app available across Android/ iOS/ Web...

Technology Software Applications
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/05/14/TiVo-800.jpg?itok=XNFEcfVQ
TiVo exits STB business

MUMBAI: TiVo is exiting the manufacturing, sales and distribution of set-top boxes to a yet-undisclosed third party, the company has said.

Technology Hardware Set-top Boxes
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/05/09/iot.jpg?itok=aq6Nc5eG
IET India IoT Panel joins hands with exhibitions india group for the 3rd edition of IoT india congress

IoT India Congress is India’s Platform of Platforms for the Internet of Things conceptualized by IET India IoT Panel, a think tank constituted by the Institution of Engineering and Technology (IET) India. The 3rd edition of IoT India Congress will be hosted in collaboration with India’s leading...

Technology Software Firmware
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/05/08/lexi.jpg?itok=_UKBq1kZ
Tata Elxsi's Automation suite adopted by pan-European Media and Telecommunications Company

Tata Elxsi, a global design and technology services company, announced the licensing of its integrated test automation and monitoring suite ‘FalconEye’ to a pan-European media and telecommunications company for OTT automation and improving streaming performance.

Technology Software Firmware
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/04/13/nabshow.jpg?itok=F8KKyrXQ
Verimatrix recognized for contributions to latin american Pay-TV market with PRODU award win at NAB Show

LAS VEGAS: Verimatrix, a specialist in securing and enhancing revenue for network-connected devices and services, has received the PRODU Award for Best Pay-TV Technology Contribution on behalf of its MultiRights™ OTT solution. MultiRights helps service providers effectively navigate the modern OTT...

Technology Software Firmware
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/04/09/magai.jpg?itok=hC6uaBo3
Amagi debuts machine-learning powered content-preparation suite

Amagi, a cloud-based technology provider for media processing, has launched Tornado, a machine learning-based content preparation service that enables TV networks and content owners to scale their operations and accelerate broadcast workflows.

Technology Hardware Components
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/03/08/tivo.jpg?itok=vqdqRSNf
Sharp and TiVo extend interactive program guide deal to power content Discovery across entertainment devices

MUMBAI: TiVo Corporation (NASDAQ: TIVO), a global leader in entertainment technology and audience insights, today announced that Sharp Corporation will further utilize TiVo’s G-Guide HTML across Sharp 4K smart TVs and Ultra HD Blu-ray recorders in Japan, TiVo’s G-Guide xD app and remote schedule...

Technology Hardware Components
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/01/25/priyanka.jpg?itok=C0lEuPHt
HARMAN announces Priyanka Chopra as global brand ambassador

HARMAN International, a wholly-owned subsidiary of Samsung Electronics Co., Ltd. focused on connected technologies for automotive, consumer and enterprise markets, today announced that actress, singer, producer and philanthropist Priyanka Chopra has been named a global brand ambassador for the...

Technology Hardware Components
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2018/01/24/etere_0.jpg?itok=XgPAaBYr
Etere HSM expands interoperability with Grass Valley

Etere HSM features an integration with Grass Valley that improves interoperability, streamlines connectivity, enables faster content processing and includes deep archive capabilities. Etere introduces a new integration layer between Etere Hierarchical Storage Management (HSM) and Grass Valley...

Technology Hardware Components

Latest News

Load More

Sign up for our Newsletter

subscribe for latest stories