Archive for the ‘Electronics’ Category
Friday, May 30th, 2008 |
The Sony BRC-H700 high definition video camera is
designed for a variety of remote acquisition
applications, especially in television production
for recording programs and for use as a weather
or even traffic camera.
The PTZ (Pan Tilt Zoom) camera can display images
onto a large screen in auditoriums, teaching
hospitals, sporting events, trade shows, and even
concerts. This unit is also ideal for distance
learning applications in which clear high definition
images need to be projected onto electronic white
boards during a presentation or other function.
The Sony BRC-H700 also features three 1/3 inch HD
CCDs with 1.07 megapixels, delivers accurate color
reproduction, and is ideal for taking pictures or
videos in low light environments.
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Friday, May 30th, 2008 |
Satellite radio systems are actually part of a larger group of broadcasting mediums, which specialists refer to as Digital Multimedia Broadcasting or DMB. This digital transmission system is used in order to send data to different receivers such as radios, television sets or mobile phones and PDAs. There are two different ways of using digital multimedia broadcasting - S-DMB which is broadcasting via a satellite or T-DMB which uses terrestrial emitters. The complexity of the entire digital multimedia broadcasting field is huge. Out of all the features and characteristics digital broadcasting offers, satellite radio is probably the most spectacular as it generated immense interest and triggered an intense competition between the two main satellite radio broadcasters, Sirius and XM Radio. The development of satellite radio and other forms of digital broadcasting is spectacular because it offers two main qualities that terrestrial emitters are deficient in: quality and coverage. In the case of satellite radio, for example, the sound quality from a satellite broadcast is much higher than AM or FM broadcasts, as the hissing noises and transmission disturbances are eliminated.
This is a preview of
The development of digital multimedia broadcasting
.
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Friday, May 30th, 2008 |
IPods have been a great market hit since their appearance in 2001, almost 5 years ago. Since listening to music is one of the favorite activities of today’s individuals, the constant evolution of this device was an important request, so the new product presented a diverse range of new features, accessories and capacities. The iPod evolved from a simple and basic music player to a sum of music player, recorder, and photo viewer and now to a both music and video device.
The most important new feature of the latest generation of iPods, meaning the 5th generation, is the video. Basically, these inventive and technologically advanced, yet small devices support both MPEG-4 and H.264 videos at significantly high resolutions, which are not far from a VSH tape. Actually, in more precise terms, the H.264 codec can play video at frame rates up to 30 frames per second, video bit rates as high as 768 kilobits per second and pictures as big as 320 pixels wide by 240 pixels high. Comparing the iPod video with the TV 27 FPS or the movies 24 FPS, it is obvious that the small device it is much better. Regarding the audio qualities, comparing to a CD quality, the iPod video is superior. On the other hand, the MPEG-4 video supports a bit rate of 2,500 kilobits per second and pictures as big as 480 pixels wide by 480 pixels high, meaning three times the size of the actual screen (in comparison with the H.264 video, which supports pictures the same size as the screen pf the iPod).
The reviews on this item are so far, excellent – the quality of the motion images is great, with almost perfect colors, even when the device is connected to a TV set in order to watch a video. Even more, watching the videos on the actual iPod is possible due to a larger screen, which also allows the high visibility of sharp texts and photos. Still, even though the battery is claimed to last around 20 hours, which is an evolution since the last iPod model, the battery is much rapidly consumed when watching videos.
The range of improvements since the last model of iPod is impressive: the new video iPod comes with a new design, but in the same black and white colors and with a new set of accessories, which range from world clock, smaller earphones and a thinner slipcase to AC adapter and FireWire cable. Concerning the new package design, the iPod video comes with a new look: the box is flat and in a square shape; the color of the new box is black with silver accents, such as the Apple logo and the text.
The latest generation of iPods surprised the market in many ways: from the video capacities to the other improved features since the last model in 2005 and from the design and package changes to the wide and evolved range of accessories that are available together with the new iPod video. The evolution of the iPod shows an increased interest in constantly developing this device and always considering the needs and desires of the consumer. It is expected that the next generation of iPods to be even more optimized, with a lot of changes in the video settings and a longer capacity of the battery when watching videos.
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Thursday, May 29th, 2008 |
Nikon is a trusted brand in the digital camera industry. Some of the high end Nikons are staples of quality digital photography. One model in particular, though a little pricey for casual picture-takers, is a favorite among professionals and industry insiders: the Nikon D40.
The Nikon D40 is a 6.1 megapixel digital camera with 3x optical zoom. Pictures are taken in JPEG or NEF (RAW) format. The camera’s ISO equivalencies range from 200 to 1600. It has both programmed and automatic focus modes and exposure settings to ensure the very best photographs regardless of distance or lighting. It uses a Nikon AF-S DX 18-55mm lens.
A sturdy camera, the Nikon D40 weighs in at one and a half pounds. Its physical dimensions are 3.7 in x 5 in x 2.5 in (HxWxD), making it a hard camera to fit into tight spaces, but also a hard camera to break. Users like the Nikon D40’s natural feel. It fits right into the photographer’s hands and doesn’t feel clumsy or bulky.
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Thursday, May 29th, 2008 |
This digital HD media camera is small, elegant, and
also lightweight. The Sanyo Xacti will beautifully
capture your memories in high definition. The
stylish vertical design offered by the camera will
make it easier for you to keep an arm steady while
you shoot.
2.2″ color OLED
The 2.2″ flip out organic light emmitting diode
screen will offer easier viewing of your recordings,
even in bright sunlight.
Video and pictures
The Xacti will simultaneously shoot 5.1 megapixel
still images and high definition video clips. The
HD1 can also record over 21 minutes of 720 pixel
HD video on a single 1 GB SD care, or well over 42
minutes on a 2 GB card.
MPEG 4 format
The HD1 utilizes the high quality MPEG 4 recording
format which will deliver amazing video clarity and
detail. With the files being conveniently small,
you have the ability to record long, high quality
video clips.
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