HDTV versus HD Ready TV

If you are wondering what's the difference between (HD) High Definition TV compared with a HD Ready TV, I found out from a technical specialist and he explained to me as follows.

With a full HD TV set, the display panels are natively capable to display 1080p HD movies and games. HD-ready TV natively support only 720p. The numbers of pixels refers to the pixels that can be displayed on the screen vertically. So a full HD Screen can display 1080 pixels vertically and 1920 horizontally while a HD-ready TV screen displays at least 1280 x 720 pixels.

Tips on Choosing Projectors

I needed to buy projectors for my company and went to look for vendors that could give me affordable prices. But before that, I had to do a bit of homework on choosing projectors and I had list the important stuffs here as a reminder.

1. Brightness, measured in ansi lumens - (brighter better)
2. Contrast Ratio (higher contrast ratio better)
3. LCD or DLP
4. Aspect ratio (normal 4:3 or need widescreen 16:9)
5. Resolution (higher better 1024x768 or higher)

Of course these are just some of the important things to look out for in the specs but projectors nowadays comes with even more features that you might want to check with your vendors.

Radio Control Helicopter

I bought this miniature radio control helicopter after seeing the demonstation video in the shopping mall. This radio control helicopter is very light weight. I'm quite surprise that they could fit a small motor to propel the helicopter for the main rotor and the tail rotor blades. Also the manufacturer manage to put in all the electronics, transmitter into the small body of the radio control helicopter. The only flaw that I find with small radio control helicopters is that it is very hard to prevent the whole helicopter from spinning on its axis as the balancing between the tail and main rotor is hard to maintain. I recommend that if you want to buy a radio control helicopter, find one with a tandem type of counter rotating rotors design like the "Chinook". It would probably provide better stability.