What does a Google Tablet mean?

“In the next 6 months, we plan to market a tablet of the highest quality” – Eric Schmidt

The above move from Google had to come sooner or later. Most of us will agree that the year 2011 was the year when Google pushed really hard to bring out a competitor to the hugely successful iPad. Has Google been successful? Let’s look at some numbers for finding out answers.

According to a recent report that was published by IDC (International Data Corporation), Apple’s iPad leads the tablet market share with about 61.5% while Google’s Android tablets took the second place with 32.4% and Samsung having the highest market share (among Android) with 5.6%. So, a group of big names like Samsung, Motorola, HTC, Asus etc. who supported Android couldn’t quite match up to Apple’s iPad which continues to dominate the tablet market even today. From the start of 2011, when everybody witnessed the much awaited XOOM tablets from Motorola to the end of 2011, when everybody saw the latest Galaxy Tabs from Samsung, Google has never been able to produce a worthy competitor.  Why?

The answer mainly lies with respect to ownership of hardware and software. As I already said in my previous posts, Apple is always in control of both of its components that make up the tablet: Hardware and Software. So, it precisely knows how to produce a tablet that contains software that can take the maximum advantage of the underlying hardware. This was what was lacking in Google’s tablet strategy. The fact is that Google has always been producing software (with not much of a great idea regarding the hardware’s cohesiveness with the software) which was being modified extensively by other android-tablet manufacturers who put that software onto the tablets. Google never really worked closely with any of the manufacturers as far as tablets are concerned when it ideally should have, as Google is not responsible for the hardware part of the devices. The reason that people can see a great phone like Google’s Galaxy Nexus today is because Google hasn’t left any stone unturned in its desire to produce a phone that can take the user experience to a next level. It has coordinated really well with partner companies like Texas Instruments, Samsung etc. and the result now is there for everybody to see.

So, does it now make sense for Google to produce its own tablet? Absolutely. Many experts have always believed that the stock ROM offered by Google is always better than the modified ROMs like Touchwiz and Sense in terms of general zippiness. There is some truth in these opinions as evidenced by the benchmark scores that the devices get and the kind of lag that some people experience in tablets being produced by manufacturers. The latest truth comes in form of stock Android 4.0 (Ice Cream Sandwich) running in the Galaxy Nexus. Thankfully, Google has realized this and is now wasting no time in bringing to market as what Eric Schmidt said "the tablet of the HIGHEST quality". Go Google.!!

Stay tuned..!!

LCD TVs and LED TVs: Are they really different? (Contd.) - 1

Yesterday, we discussed about the truth behind the LED TVs. Today, we’ll go further into the various categories of ‘LED backlit LCDs’ available in the market today.

Currently, ‘LED backlit LCDs’ are available in the market in 2 varieties: ‘Edge-Lit’ and ‘Full-Array’. In an ‘Edge-Lit LED backlit LCD’, LEDs (Light Emitting Diodes) are present in the entire perimeter (periphery) of the television. The backlighting of the screen is achieved with the help of what are called ‘Light Guides’. These ‘Light Guides’ direct the glow towards the center of the screen.

The following are the advantages of these kinds of televisions:

1. They are very thin (as much as 40% thinner) when compared to ‘CCFL backlit LCDs’
2.  They consume much less power (as compared to the ‘CCFL backlit LCDs’
3. They are also very much lighter in weight (In fact, most of them could be wall mounted)
4. They can produce a bright image with very nice colors and deep blacks

The following are the disadvantages:

1. The entire screen may not be lit uniformly (The edge of the screen may be brighter than the middle of the screen)
2. True blacks may not be achieved consistently across the entire screen

In fact, both the varieties: ‘Edge-Lit’ and ‘Full-Array’ LED backlit LCDs have the capacity to produce deep blacks as the LEDs could be simply turned off when no color is being reproduced on the screen.

Now, for the ‘Full-Array LED backlit LCDs’: In these kinds of televisions, several rows of LEDs are placed behind the entire surface of the screen.

The following are the advantages of these kinds of televisions:

1.  They are thinner (as compared to the ‘CCFL backlit LCD’ variety)
2. They consume much less power (as compared to the ‘CCFL backlit LCD’ variety)
3. They are lighter in weight (Again, as compared to the ‘CCFL backlit LCD’ variety)
4. They can produce ‘True Deep Blacks’ (as compared to both ‘CCFL backlit LCD’ and ‘Edge-Lit LED backlit LCD’)
5.  The brightness and colors are better (as compared to both ‘CCFL backlit LCD’ and ‘Edge-Lit LED backlit LCD’)

The following are the disadvantages of these kinds of televisions:

1. ‘Blooming Effect’ (described below) affects the picture quality a little bit
2. Slightly thicker and heavier (as compared to the ‘Edge-Lit LED backlit LCD’)

The reason that ‘Full-Array LED backlit LCD’ can achieve truer blacks is because whenever blacks have to be reproduced on a significant portion of the display, an entire section of LEDs can be turned off without affecting the display properties of the other LEDs. This property is widely known by the name: ‘Local Dimming’. So, local dimming leads to better blacks but also leads to an effect called ‘Blooming’. If a bright color (LEDs turned on) is being displayed inside a black section (LEDs turned off - Local Dimming), the bright color creeps slightly into the adjacent black portion (like a halo). This effect is called ‘Blooming’. But hey, it is ever-so-slightly-noticeable.

So, there are 4 kinds of ‘LED backlit LCDs’:

1. ‘Edge-Lit LED backlit LCD’ without ‘Local Dimming’ 
2. ‘Edge-Lit LED backlit LCD’ with ‘Local Dimming’
3.  ‘Full-Array LED backlit LCD’ without ‘Local Dimming’
4.  ‘Full-Array LED backlit LCD’ with ‘Local Dimming’ (Usually, the best of the lot)

I’ll again reiterate. There is no ‘True LED TV’ available commercially in the market right now. A 'True LED TV' can be defined as follows:

“Each and every individual pixel should have the capability of being independently brightened or turned off. For this to be achieved, an LED has to be present for each and every pixel. Currently in the market, a ‘Full-Array LED backlit LCD’ with ‘Full HD’ (having a resolution of ‘1920 * 1080’), has only a maximum of 2000 LEDs. If it has to qualify for being a ‘True LED TV’ there should be 2073600 LEDs.”

So, go get your TV right now.

Stay Tuned..!!

LCD TVs and LED TVs: Are they really different?

Nowadays, you can see a lot of people spending hours and hours together shopping for the perfect television which would occupy the center-stage of their respective living rooms. With the ubiquitous presence of ever-confusing marketers of the television-manufacturing companies, the decision is becoming all the more difficult. So, let us understand the technologies before you splurge your hard-earned money on them.

Earlier, you used to find televisions with only one kind of technology. They were called ‘CRT TVs’ (Cathode Ray Tube). With the help of electron guns, coils and a fluorescent screen, the CRT TV was able to produce a viewable image. Now, there were problems with this technology

1. A number of components were used to manufacture the television which made the processes of production, repair and maintenance difficult
2. The individual components were also bulky which made the television quite heavy  
3. Some of these televisions had a problem of ‘Image burn-in’ (Permanent discoloration of areas on electronic display) and a problem of ‘Image Loss’ at the boundaries of the display
4. These televisions produced noticeable flicker at low refresh rates
5. They consumed high power and generated a lot of heat

To overcome the drawbacks of this technology, manufacturers started producing LCD (Liquid Crystal Display) televisions. An LCD is a flat-panel display that makes use of light modulating properties of liquid crystals. Now, these liquid crystals do not emit light by themselves, so a backlighting source is required in cases where there is higher power consumption. To understand this, you need to take note that there are two kinds of LCDs: ‘Passive Matrix LCDs’ and ‘Active Matrix LCDs’. In ‘Passive Matrix LCDs’ like ‘Alarm Clocks’ and ‘Calculators’ where the power consumption is less, a backlighting source is usually not required. Contrast this with ‘Active Matrix LCDs’, where some sort of backlighting mechanism is required. Now, this backlighting has been traditionally achieved with a ‘Cold Cathode Fluorescent Lamp’ (CCFL) in an LCD Television. So, the ‘CCFL backlit LCD’ television overcomes the problems of CRT in the following fashion

1. They don’t use phosphor. So, the problem of ‘Image burn-in’ is eliminated
2. They can be configured to run at high refresh rates. So, the problem of flicker is eliminated
3. When compared to the CRT television, the components used are lighter in weight, so the heaviness of the television is reduced
4. They consume lesser power and generate lesser heat while lighting the entire screen uniformly
5. There is no ‘Image-Loss’ at the boundaries and the entire screen is viewable

Consequently, manufacturers found out that they could improve upon these televisions too by changing the backlighting mechanism. They found that they could bring about the following changes

1. Reduce the power consumption even further
2. Reduce the thickness of the display even further
3. Increase the image quality even further
4. Increase the brightness of the display even further
5. Reduce the weight of the display even further

The manufacturers used LEDs (Light Emitting Diodes) as a backlighting source instead of the conventional CCFL sources and were able to achieve all-the-above stated objectives. So, this gave birth to the ‘LED backlit LCD’ televisions. Currently, if you go shopping for an LCD television, you won’t find a true LED TV. The only things you will find are ‘LED backlit LCDs’. So, don’t expect to see a radically different picture altogether as compared to a ‘CCFL backlit LCD’, albeit the images produced by the ‘LED backlit LCD’ televisions are in fact much better. Even these televisions can be further classified into 4 different categories. I'll explain these categories in the next post

Stay Tuned..!!

AH-IPS, LTPS and ASV: Decoding the Smartphone Display

Well... If you would have read my first two posts of this blog, you would have by now become familiar with most of the display technologies being used today. Here are 3 more:

AH-IPS

This display technology has been invented by LG. It is an abbreviation for Advanced High performing - In-Plane Switching LCD. It is being touted as the actual competitor to Samsung's 'Super AMOLED' display. In a competition held by 'Intertek', LG's AH-IPS display actually defeated Samsung's Super AMOLED in 2 parameters: Color-Accuracy and Power-Efficiency. You can find this display in the recently released LG Nitro HD.

LTPS

This is an abbreviation for 'Low Temperature Poly Silicon' LCD. One of the important characteristics of such displays is that, the drive circuits are directly integrated onto the glass surface which contributes to reducing the number of component parts designed on the outside substrate. This leads to the display's durability being enhanced. The reduced size of the TFT section leads to a crisper display and also leads to lower power consumption. You can find this display in the Lenovo LePad S2005.

ASV

This is an abbreviation for Advanced Super View display. The important characteristic of this display is that it offers excellent viewing angles and competes with the In-Plane Switching (IPS) LCDs. You can find this display in theMeizu MX.