Thursday, September 27, 2007

Super Bright Low Reflectance Liquid Crystal Display

Liquid crystals are widely distinguished and acclaimed for their use as energy proficient display elements in numerous products across a wide range of fields, such as LCD TV’s and personal computers. In the present scenario they are recognized as an essential part of modern society.

A Liquid Crystal Display (LCD) demonstrates increased optical viewing performance. In an ideal position, the LCD consists of a liquid crystal display panel which is further sub-divided as a pair of transparent substrates. Liquid crystal material is inserted among the transparent substrates and transparent electrodes and is placed between the liquid crystal material and the transparent substrates.

The other constituents of LCD are rear polarizer assembly consisting of a compensation film, a polarizer mounted on the rear surface of the compensation film. Moreover, first indexed matched and pressure sensitive adhesive (PSA) is mounted on the front surface of the compensation film. The PSA remain confine to the rear surface of the LCD panel.

The LCD also consist of a front polarizer assembly which is made up of front polarizer, a compensation film mounted on the rear surface and an indexed matched PSA mounted on the front surface of the front polarizer. The front polarizer is interconnected to the rear polarizer. The front polarizer assembly can be confined to the front of the LCD panel with a second index-matched, optical bonding material which can be spaced there with the help of an air gap.

Finally a transparent cover (plastic plate) is mounted on the second index-matched PSA. The transparent cover made of plastic can be textured to minimize glare or it may possess an anti-reflection coating or an anti-reflection film which is applied on the face of the cover.

Plasma & LCD TV

Both Plasma and LCD television sets are available in similar slim-style and are capable of similar picture performance, yet there are many significant differences between the two.

Both the technologies process the image in an entirely different manner. Plasma uses a matrix of tiny gas plasma cells that are charged by specific electric voltages to produce light and create the picture image. Where as, LCD work by entrapping liquid crystal solutions among two sheets of polarized glass, when electric current passes through it, they rotate to bring transformation in the polarization of the light passing through them in response to the applied voltage. As a result, light passes through the polarized glass to reach the face of the display. In-fact, they do not produce light but filter light generated by a backlight source to create image on the panel surface.

The screen size in Plasma sets vary from 32 inches to 63 inches whereas, in LCD sets it varies from 13 inches to 45 inches. Comparatively, viewers’ fond of wider vision can feel the experience of Plasma on LCD sets in the range of 46 inches, manufactured by I-Tech Company .

Presently, Plasma sets possess an edge over LCD’s as far as screen size is concerned but in the long run LCD’s may outshine Plasmas as persistent innovation is being carried out to upgrade LCD technology.

Plasma sets possess viewing angle up to 160 degree where as LCD’s enjoys relative advantage of wider viewing angle of up to 175 degree. I-Tech Company has slightly increased the viewing angle up to 178 degree on its latest LCD sets.

Plasma technology does have a marginal edge over LCD’s as far as screen refresh rates are concerned. Plasma exhibits refresh and manages swift movements in videos where as, LCD technology needs much up-gradation in this area. LCD TV’s possess refresh rates less than 16 ms and display a small number of visible objects. I-Tech Company offers LCD sets with refresh rates of 8ms.

Stationery images can cause burn-in or stuck pixels in Plasma sets. Moreover, they rely on phosphor to display video they are susceptible to screen burn-in and possess shorter life span. It has been usually observed that static images “burn in” create an after-image ghost which stays forever on the screen. But with the advent of advanced Plasma technology this problem does not persists anymore as it has been minimized to a considerable extent with the help of Pixel Orbitor. While on the other hand, LCD’s are not prone to burn-in and possess high standard dead pixel policy.

Plasma sets usually possess a life-span of 30,000 to 60,000 hours after this duration the image fades to half the original brightness. You can enjoy LCD for a longer duration as the sets manufactured by I-Tech Company have a life span of more than 60,000 hours.

LCD’s are lighter in weight which facilitates easy mounting and installation. They can be transported without much difficulty as they are lighter and less fragile than Plasma sets. LCD offered by I-Tech Company is extremely light and compact in size.

Both LCD and Plasma sets are designed to meet the brightness expectations of the customers but LCD will definitely get better response. I-Tech Company manufactures LCD of 500 cd/m2 for household use and 700 cd/m2 for commercial use, certainly the highest in the industry.

Plasma TV consumes more power than LCD’s. High altitude affects the performance of Plasma TV as the gas held inside each pixel is stressed which results in low performance while LCD do not suffer from any such difficulty.

With LCD’s you can enjoy the advantages of exceptional color reproduction, less power consumption, display millions of color precisely, have excess of connectivity choices, usually consist of inputs for composite video, S-video, High Definition Multimedia Interface (HDMI) and PC In. Furthermore, they can easily handle progressive scan sources and displays high definition content with ease.

While Plasma TV possess: outstanding brightness, display high contrast images with extremely vivid and sharp colors, prices are less as compared to LCD, high resolution, smooth images, progressive HDTV sources and non-HDTV sources can be displayed at their best.

Thursday, August 30, 2007

Digital Signage Technology

What is Security Protection technology?
The Media Signage alters the file or significant data being transferred using a secret code so that it becomes inaccessible to unauthorized readers. When someone receives the transferred data Media Signage converts the data from code into plain text. The above procedure of encoding/decoding ensures the security of your vital data and authenticates the integrity and genuineness of the message. They are widely used in music stores, chain stores, train stations and office buildings.
What is Active Mode Technology?

Active mode technology refers to network based digital signage system where every clients gets connected to server automatically after boot-up and wait for all kinds of playback commands; for instance media and schedule update, stop playback, start playback, etc. On successfully establishing connection with server you can send controlling commands through this connection even if you are behind a firewall. This technology is employed in shopping malls, chain stores, train stations and university bulletins.

What is Group Management?

Group management becomes indispensable when the number of clients increases as it helps the system administrator to handle the status of the client and facilitate client management. When clients connect to server, server has the tremendous power and supremacy what the clients should do. Group management provides your business much needed competitive edge by facilitating client management, such as, adding/deleting clients, adding/deleting groups and configurations.

What is Client Billing Log?

Clients billing log refers to the process when play list is recorded from the internal storage of client, which includes information such as, media filename, start time/end time of playback, date of playback and client name. The management software obtains the client playing report from the internal storage of the client, an important evidence to explain the customers that the media signage units really perform the function of advertising media.

What is Auto Media Update Technology?

Clients of Media Signage can automatically revise their media play list and playback schedule in accordance to the specified time schedule. Auto Media Update Technology assists clients to update media automatically, moreover it provides great sense of relief to system administrators as they are not required to sit in front of the server and manually press Transfer button in order to update media play list.

What is GPS/GPRS Integration technology?

Media Signage can be combined with plenty of external devices, for instance GPS, GPRS and other wireless device. Media Signage can be incorporated with GPRS to update the listed files and media files via telecom on the other hand; it is integrated with GPS to display the location information. The GPS module gets the update regarding location via satellite and transfers the information to Media Signage which passes the packet information and demonstrate the predetermined picture on the screen. I-TechCompany is Online Superstore for 1U/2U Rack mount monitors, KVM switches and Server Racks, digital signage displays, industrial touch screen and open frame LCD monitors at competitive prices

Power Distribution Unit

What is Power Distribution Unit (PDU)?

Power distribution system (PDU) refers to an electrical device used to control the distribution of power to individual loads. The PDU may be in the form of separately controlled device or it may be integrated directly into the UPS (uninterruptible power supply).Large industrial units are utilized for taking high voltage and amperage and diminish it to more common and functional levels. They are widely used in computer data centers, stage shows and other electrically intensive applications. Most of the PDU are available with features such as, remote monitoring and control down to plug level, etc. A PDU permits for a solidly bonded neutral, and a safe grounding system.

What are Heavy Non-Locking plugs and Receptacles?

Heavy Non-Locking plugs provide connection to the electrical mains rated at higher voltages and currents. They are available in a variety of standardized configuration. Heavy Non-Locking plugs make for a dependable connection in commercial and industrial settings.Usually most of the receptacles in USA and Canada are known as duplex receptacles. Receptacles generally have break-away tabs to separate the top, and bottom halves in order to place the two outlets on separate circuits. Receptacles permit one switched outlet to be used for a lamp, or for two circuits to be used when heavy loads are expected. Electrical Receptacles provide the required current to run electrical devices with ease. Receptacles are commonly used in residential, general purpose, commercial, industrial, laboratory and hospitals.

What are NEMA Locking plugs and Receptacles?

NEMA the abbreviation stands for National electrical manufacturer association. NEMA defines standards for electrical interconnects and summarize manufacturing standard for electrical products. Locking plugs are preferred for heavier equipment in most of the industrial and commercial environments as it ensures more reliable current delivery. Locking plugs are available in wide assortment of standardized configuration and designed to prevent any accidental interchange of voltage and current ratings.When locking plugs are pushed into the receptacle the plug is twisted and its now-rotated prongs latch into the receptacle. To unlatch the plug the rotation is inverted. NEMA Locking plugs and Receptacles are widely acclaimed as a reliable connection in commercial and industrial settings.i-Tech is Online Superstore for 1U/2U Rack mount monitors, KVM switches and Server Racks, digital signage displays, industrial touch screen and open frame LCD monitors at competitive prices.