Thursday, December 2, 2010
About a month ago when answering a call with my Verizon HTC Droid Incredible I realized that I could not hear the person. I switched on speakerphone and was able to hear them just fine. If I switched off speakerphone, everything went silent on my end. This carried on for about a week and I got fed up with it. I did some searching on the Internet and found that there seems to be a variety of Android phone users who have had this problem sometime after their phones were updated to Android 2.2 from 2.1. I called HTC. They were useless. Of course it was a weekend and I would have to call back during normal business hours, bla, bla, bla. I popped off the battery and left it unpowered like that overnight. The next day it started working again. It's been fine for a few weeks now. I just wanted to put this out there so someone with this problem might find it and try this tip.
Friday, November 19, 2010
These are some things that I think could be added to the next generation iPad which I think would help make it a better device.
- Carbon fiber housing to reduce the overall weight
- Physical rotation lock switch (removed in 4.2)
- knurled edges (or rubber hand grips)
- Verizon LTE and At&t HSPA+
- SD Card Slot
- 8 Megapixel Camera (rear)
- 2 Megapixel Camera (front)
- Wireless mat charging capability
- Ability to charge on 500mA of current like most other USB devices
- Ability to change the built-in sounds with any sound I want
- Built-in mic for voice commands and voice notes
- Retina Display
- more RAM
- Ability to save home screen layouts to a file with import capability
- multiple user-configurable physical buttons and switches
Oh yeah, and one more thing. Bring the price down by at least $100.
Tuesday, November 2, 2010
I have a SanDisk Cruzer Micro 16GB thumb drive which I was messing around with and tried to make it bootable by ghosting a bootable image onto it. The image was too large so it failed but it left my drive in a state where it only had a 32 MB partition. Yikes! so I scoured the web looking for a utility which can restore the drive to it's original capacity and I found this one:
I can vouch for this tool that it does work!
Sunday, October 3, 2010
For the last couple of months, my DirecTV DVR (Model HR23-700) was not responding to the remote some times and other times it would respond just fine. There's a small blue indicator on the front of the DVR which flashes when it detects an infrared command from the remote. When the DVR was not responding to the remote, this light would not flash.
1. It's not the remote
I use a Logitech Harmony One remote for my entire setup and the Harmony controls all other devices just fine. Only the DVR had problems, so I know it was not the remote. Just to be sure, I tried the manufacturer's remote when the problem occurred and the problem did not go away with the use of a different remote.
2. It's not the DVR
I did some research online that suggests that that there might be infrared light coming from somewhere else in the room that is interfering with the receiver. Possbile sources of this IR light include: Daylight, CFL Bulbs, LCD TVs. Since the problem happened at night, I know it wasn't daylight. It also happened even when there were no lights turned on in the room. So I tried turning off the TV. Problem went away instantly. Wait a minute, what?
3. Something about the TV
If it is the TV, why does it not happen at all sometimes? I researched some more and found that LCD TVs can emit a lot of IR light when they are "warming up." In my case it was my backlight reaching full brightness. Most LCD TVs, except for those marketed as "LED TVs" use a compact fluorescent bulb that goes all the way around the edge of the TV as a backlight. Apparently, this backlight can take a few minutes to reach full brightness. And during this time, there is a ton of infrared light leaking out of the display. It's been referred to online as the "IR leaking" phenomenon.
4. Why now?
I couldn't imagine that the problem would just start happening all of a sudden. For almost a year I have not had a single issue with this DVR. On one online AV forum I read a suggestion to try adjusting the backlight brightness. That's when I remembered that a couple of months ago I calibrated my TV for the best picture using the Digital Video Essentials HD Basics Blu-Ray disc. As part of the calibration I had turned my backlight brightness down from 50% to about 30%. That must be what caused this problem to suddenly appear.
5. The fix
When I had just turned everything on, and the DVR was not responding due to the backlight warming up, I opened up the TV settings and adjusted the backlight brightness. I kept trying the DVR remote and it started working consistently as soon as I reached about 40% brightness. I put it back to 50% just for good measure. This fixed the problem. Now I can hit the "watch TV" activity on my Harmony remote and everything gets turned on and I can control the DVR right away without getting the interference from the TV.
6. Bottom line
I have a Vizio VO32LF which is a 32 inch Full HDTV. Apparently when the TV is properly calibrated, it leaks IR light for the first 20-30 minutes which interferes with my DirecTV DVR. I imagine that other devices might be susceptible as well but I haven't personally seen it. This problem is not unique to this TV either, as other people have reported that they have this problem with other brand / model TVs. I have read that it can even happen with plasma TVs. LED TVs seem to be immune to this problem from what I have learned.
Saturday, August 14, 2010
The problem with existing fully-electric cars is that there is no simple way to charge them and be able to take them long distances. The ideas below are my attempt to solve this problem for the future of electric vehicles.
A simple solution to the Electric car charging problem is to have removable batteries. If the batteries are removable they can be exchanged. These are some considerations in the manufacture of the batteries and their distribution.
- Electric cars must be made to use removable batteries.
- All Electric cars must use the same exact batteries so they are interchangeable.
- The batteries must be made with handles and must either be light enough to carry long distances or made with wheels attached which are sufficient size so they can be easily rolled long distances on pavement, gravel, or loose dirt.
- The batteries must be at the appropriate height in the vehicle to be inserted and removed from both the vehicle and the charging stations by a disabled person in a wheelchair.
- Gas stations and other stores must clearly mark on the outside of the building that they offer charged batteries for rent or for sale, and be able to exchange depleted batteries for charged ones. This is the EXACT SAME concept as propane tanks.
- Electric car owners may carry spare batteries in the vehicle so the batteries must be well sealed, be able to be stored at any angle for long periods of time and be protected against high temperatures and extreme cold.
- Electric car owners must be able to buy and charge their own batteries at home, charging them via a normal household mains socket.
- Vehicle manufacturers must offer an out-of-vehicle charging station to be used with the batteries, in addition to offering an in-vehicle charging solution which does not require the batteries to be removed for charging.
Thursday, July 22, 2010
Device resolution-independent computer operating systems
In the past, we had CRT monitors which would allow us to fill a 15 inch monitor with an image, whether that image was based on a high resolution or a low resolution. If you desired the items on the screen to appear larger, you needed only to reduce the resolution selected for the interface and they would scale to fill the entire space available. This did not result in fuzzy images, in fact it usually sharpened the images to do so. When we started using LCD displays for computers things changed. These panels have a fixed, native resolution. That means they only look sharp at that one particular resolution. If you change it to something else, you get a blurry image, and that can sometimes defeat the purpose of changing the resolution to make things bigger. Resolution independence will be a huge advantage for older people and others who have trouble seeing text at normal sizes. Rather than "dumbing-down" the resolution to make things appear bigger, the way they do today, I imagine a future where the operating system's selected resolution is always set to the native resolution of the connected display. Imagine an operating system which can scale its interface up or down in size smoothly while keeping the resolution unchanged. There may even be a slider or a virtual knob of some kind to dial in the precise factor of magnification desired. I presume that the size of text at 12 point font will be the basis of the factoring system used. We are already seeing some devices with extremely high resolutions. Apple's iPhone 4 features the retina display. It's a screen with a resolution of over 320 pixels per inch. Imagine that kind of resolution on a 22 inch widescreen monitor. That would mean a resolution of around 5480x3424 If you rendered current operating systems at that resolution on a 22 inch widescreen display, things would appear about 3.26 times smaller than they are now. Clearly, the answer for this is resolution independence. There is evidence of this already on the iPhone 4.
Monday, June 21, 2010
I have an iPhone and noticed that the screen suddenly started dimming after a few minutes and it's not supposed to. I distinctly remember turning off the auto-lock feature and now it's locking itself after 5 minutes. WTF!? I tried to set the auto-lock setting to "Never" but that option was no longer there! At first I got angry with my iPhone. Then I got Angry at Apple. Then I learned the truth about what was causing this problem and was able to get it fixed.
If you have an iPhone and this same thing has happened to you, I have good news for you. There's a fix.
First, to see if you are affected by this, try going to your iPhone's settings and just disable contacts, calendar and email for your company's activesync server account. Now look in the auto lock settings under General in your iPhone Settings. Did the "Never" option come back? If so, then you just proved that it has something to do with your corporate email server.
Fortunately for me, I'm an Exchange 2007 Administrator. If you're not, then you're going to need your Exchange administrator's help. Pass this page along to them and as long as your company doesn't require auto-locking for connected devices, they should be able to help you. This is a very quick fix and should only take an administrator a minute or two of their time.
Here's what your Exchange administrator should do:
- On the exchange server launch the Exchange Management Console
- Open Organization Configuration -> Client Access
- Right click on the default activesync mailbox policy and select properties
- Select the password tab
The default properties window should look like this:
If any of the boxes are grayed out and checked, you need to check Require password so you can uncheck them. Then you can uncheck Require password again.
After this has been done, on the iPhone, disable this activesync account (no need to delete it, just turn it off) and then turn the Auto-lock setting back to "Never." Now go back and turn your activesync account back on. Your auto-lock setting will now will stay at "Never."