2011年4月30日星期六

Why are Android tablets tanking while Android smartphones explode?

Sony once again announced its Android tablets this week, joining pretty much every major PC maker in announcing -- but not actually shipping -- Android tablets based on the Google Android "Honeycomb" 3.0 OS. The same week, yet another investor analyst reported that sales of the first Honeycomb tablet, the respectable Motorola Mobility Xoom, may have sold as few as 25,000 units. (Motorola Mobility says it shipped 250,000, but that means how many it sent to stores, not how many they sold.) Compare this number to 2.5 million sold in a shorter period for the iPad 2, which Apple could not make enough of and, thus, sold fewer than expected. One particularly vulturish investment analyst even suggested Motorola start suing other Android makers over patents to make money, rather than rely on the sales of Android tablets themselves.
Meanwhile, sales of Android smartphones continued to surge; most analyst firms predicted Android handsets will account for half of all smartphone sales in the United States by year's end, up from about 30 percent today, and become the undisputed smartphone champ. The iPhone, by contrast, would remain flat and account for around 25 to 30 percent of smartphones sold, RIM BlackBerrys Hp 2230s battery,Hp 530 Battery,Hp dv6000 Batterywould be in the 10 to 15 percent range, and everyone else would be irrelevant. Even enterprises are predicted to see an Android smartphone majority this year.
Why are Android tablets tanking while Android smartphones explode? You can't just blame the iPad, because the iPhone isn't enjoying the same relative success against Android smartphones as the iPad is against the Xoom. Yet, generally speaking, the quality gap is no different.
There are several theories floating around, none satisfying given the huge Android fan base, the large number of Apple haters out there, and the lack of other tablets to choose instead. Face it -- hardly anyone will choose the RIM BlackBerry PlayBook given how disastrous that product turned out to be, and you don't see any evidence that people are rethinking their aversion to Windows tablets.
One theory is that the iPad 2 is so obviously superior that no one -- not even a fandroid -- can resist the Apple tablet. Superior it is, but fanboys are by definition hard-core devotees, not fair-weather friends. I just don't see a massive religious conversion occurring, especially among those who have legitimate issues with Apple's control over the platform and users (via iTunes and the App Store). Meanwhile, these same folks remain in thrall to every Android smartphone rumor, as Apple fanboys are to iPhone rumors.
Another theory is they're waiting for the flood of promised Android tablets before they put down Hp pavilion dv7 battery their $500 to $900. Maybe, but there should be a lot more fandroids willing to get the first, respectable Android tablet today (the $600 Xoom) rather than wait until summer or fall for the promised devices -- especially considering the similarity in their specs.
A third theory is that Apple sneakily bought up all the key components at discount in its confidence about the iPad 2's success. As a result, Android makers and other competitors are forced to charge more than Apple for feature-equivalent products -- forcing users to wait until prices are more closely aligned.
A fourth theory is that would-be Android tablet buyers are simply slower on the draw than iPad buyers. They didn't jump onto iPhones in that device's first three years but waited until Year 4 (2010) of the smartphone phenomenon to join in. They'll wait out another stretch before buying a tablet because it's still too early to go there.
Google's own behavior may encourage such slow motion: It made devicemakers wait Compaq 484170-001 battery,Hp dv9000 Battery a year after the iPad to get its own tablet OS, causing many vendors to release ill-advised smartphone-based devices for the holidays. Even now, its pace is glacial in updating and releasing Honeycomb. Google has also made no effort to outflank Apple, following Apple's lead in almost every area instead (voice-based search and navigation being the major exceptions).
CloudTags:Why,Android tablets,tanking,Android smartphones,explode,laptop batteries,camcorder battery,Acer aspire 5520 Battery,Acer as07b71 Battery,Hp nc8230 Battery
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What you think about iPhone's camera

Are you a little envious that the iPhone 4 has an LED flash?
If you're still carrying an old iPhone 2G/3G/3Gs and wish you had a flash, consider the iFlash — a small LED flash dongle.
The iFlash connects to your iPhone's 30-pin port and has an on/off button for it to function as a camera flash or as a regular flashlight. I know, I know, you probably already use your phone's screen as a flashlight like me, but a proper flashlight will always be better. God knows how many times I still bumped my head in the dark while using my phone's screen as a light.
Most people will use flash in the dark, causing their pics to become washed out. What they should be using it for is "fill flash" to bring out the details from the shadows when it's sunny outside. Just a little meme to help you take better photos next time you're out and about.
iPhone cameras are designed to simply take shots; there isn't a lot of tweaking to the photos that can be Dell inspiron mini 9 Battery,Dell latitude d630 Battery done (and there isn't much you can do wrong). However, with a few techniques, you can turn an average shot into a good one just by being aware of the functions of the camera as well as your surroundings. The iPhone 4 camera has 5 options that can be set: flash on / off / auto, High Dynamic Range (HDR) on / off, front or back camera, zoom, and still / video mode. It's important to remember that the iPhone 3 and 3GS don't have flash, HDR, or a front-facing camera.
Make the most of flash
Flash is a great addition to the iPhone 4. It allows for those photos you want to take if you're out at night with your friends, and if you don't expect too much from it, it works well.
First, make sure that what you're trying to capture is at relatively close range. The camera's flash isn't very powerful, so you want to make sure the subject Dell inspiron 6400 Battery  is within 3' to 5' of the camera. Anything further than this will create a hazy effect and wreck your photo.
Second, if there is a reflective surface such as glass or shiny plastic in front of the camera, try to avoid using the flash. The narrow angle of the LED flash will reflect light straight back at the camera, causing big white spots. If you do need to use the flash, try to avoid having a reflective surface someplace where this is apt to happen.
Working with contrast
High Dynamic Range imaging, or HDR, is another new feature introduced with the iPhone 4. In technical terms, HDR is an image processor that allows for greater dynamic range of luminance. In non-technical terms, it changes the contrast of different parts of the image depending on light. This can make clouds and skylines stand out more, light up items on the photo that would normally be darker due to other bright areas in the photo, and generally improve the look of your images by making the color and contrast more intense.
However, there are a couple of downsides. It won't work with the flash on, and the image size is larger than a standard image. It's not a bad idea to leave HDR on all the time (except if you need to use the flash), and here's why: Even if you don't like the quality of the HDR image, the iPhone 4 still saves the non-HDR version of any pictures you take, too. Comparing the two images after you've taken some with this mode will help you get a feel for what it brings to the game.
Zoom!
The last feature of the iPhone's camera is the zoom. Unless it's absolutely necessary, try to avoid using it if you can! It is a digital zoom, and because of this, the more zoom you use, the lower the image quality becomes. (This image degradation happens at very low levels of magnification; even zooming in a modest 1.2x really makes a mess of things.) This is because the camera zooms in by using fewer of its optical sensor to take the picture, rather than moving Dell xps m1330 Battery,Hp 484170-001 battery physical lenses (or optics) to magnify the image while still using the whole sensor. It is a cheap man's zoom, and it drastically lowers the quality of the image.
After seeing these stunning photos, I must admit that we were probably too critical about iPhone's camera.
Which one is your favorite photo from this collection? I am also curious to know what you think about iPhone's camera.
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2011年4月29日星期五

Why should we use Twitter at all?

"Good luck with #hashtags," replied a friend. Another suggested that I show them Senator Chuck Grassley'scampaign commercial, in which the septuagenarian explains that Twitter is not an incurable disease.
Meanwhile, back at the dinner table, I was struggling to explain how Twitter works. My parents and my mother's parents have all used Facebook, and they all have Ivy League degrees. But even @ replies seemed to require several additional layers of explanation Dell d820 Battery,Compaq nc6400 batteries (it's like a short email that everyone can see but it's really for one person unless you put a period in front of the @...).
I know my folks could learn how to use Twitter if I sat them down at a computer -- it's really no harder than sending an email. But while I slogged through the technical specifics, I was avoiding their real question -- why should we use Twitter at all?
So now, for the benefits of my grandparents and yours, here are five jargon-free reasons for Grandma to get on the tweet train.
1. Relevant Headlines Customized For You
Think of Twitter as a stream of constantly updating headlines and comments about everything that matters to you. You can get updates from your favorite news organizations. Athletic teams. Celebrities. Your local government. Your airline. Your favorite websites. Your colleagues. And of course, your family and friends.
You can digest all of this information quickly because Twitter limits each headline (called a "tweet") to 140 characters. Want to go deeper? Many tweets include links where you can learn more.
Plus, if you write your own tweets, you can to add your voice to the conversation.
2. Non-intrusive, Flexible Conversations With Your Friends
If you send a group email, you're assuming that everyone wants to read it. You're also forcing everyone to read everyone else's replies. On Twitter, anyone who reads your tweets can choose to actively converse with you, or simply read your updates and conversations at their own pace.
Tweeting (yes, it's both a noun and a verb -- sorry) can also yield surprising insight from others who might "overhear" you -- you might pose a question Toshiba Pa3356u-3bas Battery,Dell gw240 Battery to one person and get insight from a different person you never even thought to ask.
3. Access to Powerful People and Companies
Want to talk to your favorite athlete, movie star, or politician? Want to get rapid customer service from your rental car company, or to ask your favorite potato chip company to make a unique flavor for Groundhog Day? When you talk to famous people and companies on Twitter, they listen -- and there's a decent chance they'll respond. You can't say the same about email.
4. (Almost) No Junk
Email comes to you whether you want it or not. But on Twitter, you have total control over the information you receive. If an account is spamming you with ads, meaningless lunch updates, or just too much information, you simply unfollow them.
5. Twitter is Safe (As Long As You're Smart)
The information you give to Twitter to start your account -- like your email address Asus a32-f3 Battery,Dell latitude e4300 battery and password -- is just as secure as it is on other sites you already use like Facebook, LinkedIn, and Gmail. Your tweets, however, are public -- the Library of Congress even keeps an archive.
Fortunately, it's easy to keep your personal information secure on Twitter: if you don't want the world to know something (your bank account, your political views, the blood type of your firstborn), don't tweet it.
Even if you're not comfortable posting any information, that's fine. As Twitter says on its homepage (and as I explained in Reason 1), "[y]ou don't have to tweet to get value from Twitter."
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iPhone further threatens sat-nav apps | Battery Care Guide

As Harry Hill didn't quite put it: I love sat navs, and I love smartphones. But which is better? Apple and Google, it seems, reckon that the answer is "smartphone"
.
I think they're right.
My quest for the perfect sat nav has cost me a fortune over the years, but the quest ended when I stuck the TomTom app on my iPhone.
TomTom's app does everything I need it to do: it knows which routes to avoid at particular times of the day, it can tell me if there's roadworks, an accident or another problem up ahead, it auto-corrects its own maps via 3G downloads, it can look up addresses from my contacts and it can Google for places when I'm not entirely sure what Hp nc6100 Battery,Hp dv9000 Battery they're called.
It sucks battery power like a Dyson sucks up dirt and TomTom's own cradle is crazily expensive, but a cheap charger and a bit of gaffer tape solves those problems easily enough.
It's genuinely brilliant, and I'm sure rival firms' apps are just as good.
Ultimately, though, they're all doomed.
Apple, it seems, isn't spying on iPhone owners so that divorce lawyers can go "aha! You were here, then, with her, and you probably DID THINGS!". It's doing it to offer "an improved traffic service".
If they mean traffic in a "vroom vroom" sense, which I think they do, it may be new pants time for sat nav firms.
First, the phones came for their hardware. Now, they're coming for the software.
Where do you want to go today?
Steve Jobs doesn't like it when other people control key bits of technology, so it wouldn't be surprising if he wanted an alternative to Google Maps on iOS devices. Apple's 2009 purchase of mapping firm PlaceBase and the current drama over location Mitac bp-8089 Battery,HP pavilion dv2000 Battery recording suggests that Apple's plans for an alternative are well under way.
And of course, Google continues to improve its own mapping app on Android.
Between them, Apple and Google dominate the smartphone market - and before long, pretty much every phone will be a smartphone. If the two biggest players both provide decent mapping apps on every handset, with live traffic information, local search and perhaps social networking to boot, and if they provide that for free, then novelty voices may be all that's left.
For example, as Christopher Phin, editor of Tap!, points out: "We know that TomTom uses information from mobile phone providers to enhance the accuracy of its live traffic service, HD Traffic." Apple and Google don't need that. They've got the phones.
It's the good-enough problem all over again. Apple and Google sony vgp-bps8 battery,Sony vgp-bps2c Battery  don't need to offer best-in-class mapping; they just need to offer good-enough. When you've got good-enough sat nav for free, persuading you to upgrade isn't going to be easy - especially at the prices some firms are currently charging.
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2011年4月28日星期四

Tips for increasing Camera’s Battery Life

Ever since cameras started to sport built-in light meters, batteries have become necessary in order to make them portable. Indeed a camera can be operated completely mechanically, no need for batteries. Older cameras had a manual or mechanical setting that required no batteries for operation. You had no light meter to guide you but at least you could get the shot when your batteries were depleted. The film would be advanced and the shutter cocked manually by cranking a lever usually positioned above the right hand thumb.
  camcorder battery
Well, those days are long forgotten. There is no single camera today that I know of that is fully mechanical with no need for Canon BP-808 Battery,Canon BP-810 Battery. Since Digital cameras are standard fare, batteries are necessary for the capture of the data, the computer inside that converts light into data, and battery life is as important as having an empty memory card to record the images.

Some Background

This short article could never do justice to the development of modern day batteries. But it is worth noting that batteries have evolved from their most basic form to the ultra-high performance batteries we use today in around the last 100 years. Early batteries consisted of very large plates of metal and baths of chemicals which would be considered mediaeval by today’s standards. However the principles are still the same no matter what technology is used.

Technology

The earliest batteries were not rechargeable. We take for granted that our batteries today can be re-used many times over. Once the battery was drained, it would become unusable. The first rechargeable battery was invented around the 1850s and was of the lead-acid type, still used today in most automobiles.
Dry batteries were invented in the 1880s and are the type used by most portable electronics. Huge advancements in battery technology in recent years have yielded smaller and longer lasting yet re-usable Toshiba pa3534u-1brs Battery.
The two most important battery technologies today are NiMH (Nickel Metal-Hydride) and Li-ion  (Lithium-Ion). The two technologies are very similar in their resulting capacities and energy output with minor differences in how they discharge. Lithium-ion batteries are the most effective batteries today as lithium has the lowest density of any of the metals on the periodic table and it is also the lightest metal. Interestingly for us, lithium is used in strengthening alloys used in airplanes.

So what about my camera?

Hopefully I have not bored you to death. Let’s talk about what are the common types of batteries used in cameras today.
NiCd
Some camera manufacturers still use (NiCd) Nickel-Cadmium rechargeable batteries. NiCd batteries dominated the landscape of modern electronics rechargeable batteries. The main advantage of this type of battery is the high current drain it is capable of withstanding. NiCd batteries are commonly used in applications requiring sudden high bursts of energy such as motors. NiCd 
Toshiba pa3536u-1brs Batteries,Toshiba pa3534u-1bas battery are also widely available and prices have dropped considerably in the last few years. Negative traits such as “memory effect” and temperature sensitivity have caused manufacturers to select newer more expensive technologies.
Memory effect
A NiCd battery can exhibit this effect when charged and discharged numerous times to the same charge state (both depleted and charged). If discharged to a certain level and not fully drained, as the battery reaches the last drainage level it will show a decrease in output voltage. This means the device being powered can suddenly stop operating.
Temperature sensitivity
This is a two-fold problem. NiCd batteries perform poorly as temperature increases. The chemical reaction of the Cadmium and Nickel produces more heat as more current is needed. This can lead to battery damage and even fire and destruction of the device being powered.
The use of Cadmium is also not good for the environment. Cadmium is a heavy toxic metal which must be disposed of carefully.
NiMH
Most consumer cameras today use NiMH batteries. This technology literally eliminates the drawbacks of NiCd technology by having no adverse memory-effect and can also withstand higher temperatures without damage. However the cost of NiMH batteries is higher due to the cost of the metals used.
Advantages and Disadvantages
Nickel Metal-Hydride batteries also have a higher energy to density ratio which means you get higher capacity in the same space. They also have a better discharge curve than NiCd and Alkaline batteries especially under high current drain. NiMH batteries also have a longer lifespan than NiCds and are safer for the environment. NiMH is currently the most widely used high end battery technology, widely used now in modern Digital Cameras and Electric Vehicles.
Some disadvantages are a higher self-drain rate than NiCds and when over-discharged, polarity reversal can occur damaging the battery and causing it to fail permanently.
Li-ion
Lithium-Ion technology is by far the most advanced battery technology today. HP pavilion dv1000 Battery,Dell inspiron mini 9 Battery have higher capacity, no memory effect, rechargeable over a longer lifespan and are more durable than any other technology. The only disadvantage being a much higher cost than competing technologies.
It is more widely used in small electronic devices such as cell phones due to the smaller sizes and the need for longer battery life in the smallest possible space.

Maximizing your batteries performance

So what about my batteries? As I mentioned at the beginning of the article, running out of battery power during an outing can be really depressing. Whether you find yourself with a single battery and no spares or you only own one battery of not-so-high capacity, there are things you can do to make the charge last longer:
•    If your camera has an “Auto Power Saving” mode, use it. Make sure you know how it works in case it reduces performance in a way that will hamper your ability to take pictures in a particular situation.If your camera offers Live View, do not use it. Use the Optical Viewfinder; you’ll get a more realistic view of the scene anyway.
•    Disable any automatic settings you do not need. Anything that says automatic usually means a drain on the battery, even if a small amount, every bit counts.
•    Most cameras will use the battery when turned off. You should take out the battery if you’re not going to use the camera for a long time.
•    Turn off vibration reduction on your lens if possible. You really don’t need it if your shutter speeds are above 1/800th sec anyway.
•    If you’re desperate, turn off auto-focus. Use Gaffer’s tape to lock down the focus ring at infinity. If the airplanes are far enough, you’re shooting at infinity anyway.
•    Use Silent Wave of Ultra Sonic auto-focus lenses when possible. Sony calls their technology “Super Sonic Motor”. These Auto-Focus lenses without a built in motor use the camera’s internal focus motor and put a much higher drain on your battery.
Usually a new Camcorder Battery comes in a discharged condition and it must be charged before use (refer to your computer manual for charging instructions). Upon initial use (or after a prolonged storage period) the Camcorder battery may require two to three charge/discharge cycles before achieving maximum capacity.
Use a full charge cycle before recharging. All Camcorder batteries in our site are Hp 2230s battery,Compaq nc6400 battery, so, they do not have memory which you might find in NiCad batteries. However, each chemistry has a limited number of charge cycles, so use a full charge cycle before re-charging to maximize your battery's usage. When charging your battery for the first time, your computer may indicate that charging is complete just after 10 or 15 minutes. Don't worry, this is normal with rechargeable batteries. Just simply remove the Camcorder battery from the Camcorder and repeat the charging procedure.
Try To avoid over-charging, especially, do not let your Camcorder battery over discharged. It is normal for Camcorder notebook battery to become warm when it's charged and used. The battery exhaust much faster under the high temperature, you should avoid using your Camcorder battery in shady and cool place. Hit the battery, and other acts will also accelerate depletion of battery. So, pay attention to your battery as much as possible.
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