Saturday, December 30, 2006

Very Basic of Plasma TV

  • The plasma display panel was invented at the University of Illinoise at Urbana-Champaign by Donald L Bitzer and H. Gene Slottow in 1964.
  • Plasma displays are bright (1000 lx or higher for the module), have a wide color gamut, and can be produced in fairly large sizes, up to 262 cm (103 inches) diagonally.
  • Plasma television is a flat surface made with millions of tiny glass bubbles.
  • Each bubbles contains plasma with phosphor coating. You can assume each bubble as pixel.
  • Each pixel-bubble as having three sub-pixels - one red, one green, one blue. When it is time to display an image signal (RGB or video)
  • A digitally controlled electric current flows through the flat screen, causing the plasma inside designated bubbles to give off ultraviolet rays. This light in turn causes the phosphor coatings to glow the appropriate color making your Plasma TV provide the best video image anywhere.
  • This technology known as "plasmavision".
  • Each subpixel is individually controlled by advanced electronics to produce over 16 million different colors. You get perfect images that are easily viewable in a display that is less than 4 inches thick.
  • A Plasma Display is a television monitor, capable of displaying high definition TV, regular TV, and home video. AND it's a computer monitor, capable of doing everything a regular computer monitor can do. Just bigger and better.
  • The lifetime of the latest generation of plasma displays is estimated at 60,000 hours of actual display time. More precisely, this is the estimated half life of the display, the point where the picture has degraded to half of its original brightness, which is considered the end of the functional life of the display.
  • The main advantage of plasma display technology is that a very wide screen can be produced using extremely thin materials. Since each pixel is lit individually, the image is very bright and has a wide viewing angle.
You may want to know some more about plasma TV. I would suggest you to visit following links

Thursday, December 28, 2006

10 Important feature of Fujitsu Lifebook N6420

  • The main feature which I really like in this note book is Core 2 Duo CPU and 200GB hard drive.
  • comfortable keyboard with a full numeric keypad.
  • Includes HD-DVD Drive.
  • The N6420's physical measurements are 16.3 inches wide by 12.0 inches deep by 1.9 inches thick.
  • Weight 9.7 pounds (11.6 with the massive A/C adapter).
  • Comes with USB 2.0 jacks, a mini FireWire jack, PC Card and ExpressCard slots, a media card reader, and a VGA output.
  • Approximate battery life 1 hour.
  • Resolution is 1,440 x 900 pixels.
  • Included Windows Media Center remote and receiver.
  • Comes with one-year warranty.
You want to visit following links for more information

Wednesday, December 27, 2006

Blu Ray Disc : Important feature

  • Blu-ray, also known as Blu-ray Disc (BD), is the name of a next-generation optical disc format. This was jointly developed by Blu-ray Disc Association (BDA), a group of the world's leading consumer electronics, personal computer and media manufacturers (including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK and Thomson).
  • The format offers more than five times the storage capacity of traditional DVDs and can hold up to 25GB on a single-layer disc and 50GB on a dual-layer disc.
  • Blu-ray Disc. Blu-ray Disc is supported by leading hardware manufacturers across the CE and IT fields from the U.S., Europe, Japan and Korea, including Dell, HP, Hitachi, LG Electronics, Matsushita (Panasonic), Mitsubishi, Pioneer, Philips, Samsung, Sharp, Sony and Thomson/RCA.
  • The Blu-ray Disc format is designed to stay relevant for at least 10 to 15 years. Its high storage capacity of 25 to 50 GB allows for the best-possible High Definition video quality and satisfies even the most demanding data storage needs.
  • Blu-ray Disc provides some of the strongest copy protection methods ever developed for any consumer format. It makes Blu-ray Disc the best choice for any content publisher wanting assurance that their valuable assets are protected from piracy.
  • At comparable volumes, Blu-ray Disc production costs are within 10% of DVD production costs, although a Blu-ray Disc offers 5-10 x the capacity. It is by far the cheapest format measured in cost per GB. Since Blu-ray Disc requires fewer slots in a replication line compared to other formats, it will bring costs on par with DVD, or even cheaper, much sooner.
  • The Blu-ray Disc format offers the highest capacity of any consumer media format to date, also greatly surpassing the capacity of other format proposals.
  • As the result of recent breakthroughs in the development of hard coating for Blu-ray Disc, the discs offer much stronger resistance to scratches and fingerprints than other existing and proposed formats. Hard-coated Blu-ray Discs do not require a cartridge and can be used as a bare disc, similar to DVD and CD.
You may want to visit following links for more informations:

Tuesday, December 26, 2006

10 points to know about Pentium M processor

  • Introduced in March 2003. This is a modified version of Pentium III Tualatin design.
  • The processor was originally designed for use with laptop Personal computer, thus the "M" stands for mobile.
  • The first Pentium M was identified by the codename Banias, it initially had no model number suffix, but was later identified as the Pentium M 705. This was released at frequencies from 1.3 GHz to 1.7 GHz.
  • Later Intel launched its improved 80536 Pentium M, formerly known as Dothan on May 10, 2004.
  • Revisions of the Dothan core were released in the first quarter of 2005 with the Sonoma chipsets and supported a 533 MT/s FSB and XD (Intel's name for the NX bit). These processors include the 730 (1.6 GHz), 740 (1.73 GHz), 750 (1.86 GHz), 760 (2.0 GHz) and 770 (2.13 GHz). These models all have a TDP of 27 W and a 2 MiB L2 cache.
  • It is optimized for power efficiency, a vital characteristic for extending notebook computer battery life. Running with very low average power consumption and much lower heat output than desktop processors.
  • If we compare with Pentium 4, 1.6 GHz Pentium M can typically attain the performance of a 2.4 GHz Pentium 4-M (laptop version of the Pentium4).
  • Another major area of the architecture change was done to lower the amount of voltage the processor needs to run. The current batch of Pentium M processors uses only 1.5 volts of power to run. Future Low and Ultra-Low versions will only require 1.18 and 1.1 volts respectively.
  • Although Intel has marketed the Pentium M exclusively as a mobile product, motherboard manufacturers such as AOpen, DFI and MSI have been shipping Pentium M compatible boards designed for enthusiast, HTPC, workstation and server applications.
  • Pentium M processors are also of interest to embedded systems manufacturers because the low power consumption of the Pentium M allows the design of fanless and miniaturized embedded PCs.
You may want visit the following links for more information...

Monday, December 25, 2006

IPOD buying tips

There are so many types of iPods available in the market. And it is hard to choose which one is best for me. Here are the main factors which I would consider while buying an iPod. But it may differ to others depending upon their preferences.

  • There are three main types of iPods available in the market.
  1. iPod Shuffle
  2. iPod Nano
  3. iPod
  • iPod Shuffle:This is the simplest iPod. It has 1 gigabyte of storage (1gb). This equals about 240 songs. Its builtin battery is rechargable and can play music for about 12 hours. The iPod Shuffle does not have a screen so you can not visually browse your titles.
  • iPod Nano : All new iPod Nanos come with a bright color screen. Don't buy a Nano if it doesn't have this as it is an older one. The color screen lets you find your music selection more easily than the Shuffle. Depending on the version of the Nano it can hold anywhere from 500 to 2,000 songs.
  • iPod (Video) : This is very similar to Nano. The regular iPod is wider and longer than the Nano giving you the largest iPod screen availble. The functionality is exactly the same except that you can also store and play video. Available in 30gb and 60gb and 80gb sizes. The battery on the Ipod will last up to 20 hours before giving out making it a great music and video player for long trips.
  • Storage : Its better to have fairly large storage, I would prefer one with more then 20 gig. This will help me to store enough song/video for long trip.
  • Size : Here one big question is how big that iPod could be. If you are really concern with size. You can go for Nano. But this option may take some extra from your pocket. For example The 8GB iPod Nano lists for $249.00 US, the same price as the 30GB iPod. So, need to decide here among capacity and size.
You can visit following pages for more info :

Sunday, December 24, 2006

10 points to consider while buying Notebook

  • Processor : Pantium M performs better then other processors, it has all fetures of pantium4 additionally this gives longer battery life. AMD's Athlon Turion 64 is another process which is worth to consider.
  • Memory : I would prefer at least 512MB RAM. Many notebooks are now available with 1GB of RAM. Buying up to 1GB of RAM at the same time you purchase your notebook will help extend its useful lifetime.
  • Graphics memory: I preffer 64 MB or 128 MB of VRAM.
  • Screen: Notebook screens continue to get bigger. Now-a-days wide screens are more popular.
  • BaterryLife: In my opinion, this very important factor. Notebook battery life took a step forward with the introduction of the Pentium M. With that processor average battery time of different models is 3.5 hours. Some of them can run upto 7 hrs.
  • Keyboard and pointing device: It is better to try the keyboards before buying. Thin-and-light notebooks usually have smaller-than-average keys spaced more closely than on a desktop-replacement model. if you have a preference, look for manufacturers that use your preferred pointing device on the majority of their products.
  • Optical and other drives: Most manufacturers offer notebooks with rewritable DVD drives. If you really need floppy drive, better to buy external one.

Many laptops offer the optical drive as a modular device, so you can swap it out for a second hard drive or a second battery.

  • Hard Drive: Now days most of the software taking lots of hard disk. S, its better to take bigger hard disk. I would go for 120GB.
  • Weight and bay design: Generally range of weight is 8 to 10 pounds. Also check the weight of the AC adapter. And if there any other external module.
  • Communications: Few notebooks come with a full set of legacy ports anymore. Serial ports are rare, and PS/2 ports (for a mouse or keyboard) and infrared ports are going the way of the dodo, as well. Most notebooks still have a parallel port and one PC Card slot. Two USB 2.0 is default. A majority of notebooks include a FireWire (IEEE 1394) port for connecting an external drive, an MP3 player, or a digital-video camcorder. A smattering of notebooks now include built in wireless broadband wide-area networking.

Saturday, December 23, 2006

Digital Camera: ISO Sensitivity

What ISO denotes is how sensitive the image sensor is to the amount of light present. The higher the ISO, the more sensitive the image sensor and therefore the possibility to take pictures in low-light situations.

  • ISO speed affects the shutter speed / aperture combinations you can use to obtain correct exposure.
  • ISO settings are often rated at 100, 200, or 400 but go as high as 800, 1600, and even 3200 on some advanced models.
  • A lower ISO setting is used when capturing overly bright scenes, since it reduces the light sensitivity of the image sensor.
  • A higher ISO settings is often used when shooting under dimmer conditions (cloudy days, indoors, etc.) since it increases the light sensitivity of the image sensor. As brightness in a scene is decreased the camera tries to compensate by slowing the shutter speed which in turn lets in more light but increases the risk of motion blur. To prevent this, you can increase the ISO or sensitivity of the camera, which allows the camera to select a higher shutter speed, thus reducing motion blur.
  • While using a higher ISO setting is often needed to capture images with reduced blur in lower light, it also increases the noise level of the image. A lower ISO setting is preferred whenever possible since it helps to reduce this noise or grain.
  • ISO settings can also be used to help control the shutter speed of a camera while in automatic mode. In order to "freeze" motion in a scene, a camera needs to be able to use a higher shutter speed. By selecting a higher ISO you are allowing the camera to gather more light, this automatically forces the camera to select a faster shutter speed, which helps to reduce motion blur.
  • ISO Settings:

Auto ISO: digital camera automatically sets the ISO speed according the the brightness of the scene, increasing or decreasing the sensitivity. User has no control over which ISO number is used.

ISO 50 – 80: For taking photos in bright light; excellent for close-ups, landscape, and portraits. Produces fine detail and image quality.

ISO 100: For extra sensitivity with little, if any, reduced image quality.

ISO 200: Cloudy and overcast days. Acceptable image quality, with some visible noise.

ISO 400 and above: suitable for indoor photography whether or not a flash is used. Useful for "stop-action" and sports photographs. Most compact digital cameras produce high to very high image noise.

  • An image sensor is usually calibrated so that it gives the best image quality (greatest S/N ratio) at its lowest possible ISO speed. For most consumer digital cameras, this value will be expressed as ISO 50, ISO 64 or ISO 100.
  • The size of the image sensor determines the ISO speed range that a digital camera can use without suffering from undue noise. One reason for this is because the pixels on the larger image sensor can be larger and therefore receive more light, and thus have a greater signal-to-noise (S/N) ratio.
  • If we take two image sensors, each with 4 megapixels resolution, but of different sizes, the 4 megapixels image sensor that is smaller will exhibit more noise at higher ISOs than the larger one.
  • Most consumer digital cameras use 1/1.8 in. (and smaller) image sensors, so noise at high ISO is a problem. Though they will allow you to use a high ISO (such as ISO 400), the resultant image will usually be very noisy.
  • A digital SLR (dSLR), on the other hand, uses a large image sensor, usually full frame (24x36 mm) or APS-sized (half-frame). Noise is rarely a problem and the use of a high ISO 400 results in images with barely noticeable noise.
  • There are some noise reduction software available. So, you can take photos with high ISOand later remove noises using those software.
I think you can get more information in the following site :

Friday, December 22, 2006

Digital Camera : Canon Power shot SD900

Canon Power shot SD900 is one of the hot picks in this holiday shopping season. Here is a short note about the main features available in this camera.

  • Compact, stylish case with rounded horizontal edges and a retracting lens to make it pocket-friendly.
  • 10-megapixel resolution.
  • 3x optical zoom / 4x digital zoom
  • Auto focus, auto and manual exposure
  • JPEG file format
  • Movie mode with sound
  • It offers 30fps VGA movie capture or XGA (1,024x768) movies at 15fps.
  • Can record up to 3 minutes of 1024 x 768 (15 fps) video; can also record at 640 x 480 (30 fps) until 4GB file size or 1 hour time limit is reached
  • 2.5-inch LCD, with 230,000 pixels.
  • Secure Digital card storage (32MB card included)
  • Lithium-ion battery, 230 shots per charge.
  • 6.7 ounces and 1.1 inches thick.
  • Moderately fast shooter. After waiting 1.3 seconds from power-on to first shot, we managed to snap one photo every 2.3 seconds.
  • Low light performance with a high ISO of 1,600 plus a scene mode that shoots a small image size at ISO 3,200, too. It's a wonder they put a flash on this thing..
  • They included Face Detection ability. Half press the shutter and the SD900 will show a focus target on the nearest face it finds.
  • USB 2.0 High speed support

Thursday, December 21, 2006

Digital camera : Image sensor

An image sensor a device that converts visual image to an electric signal. It is used chiefly in digital camera and other imaging devices.Its a solid state device fingernail-sized silicon chips which contains millions of photosensitive diodes called photosites.

In the brief flickering instant that the shutter is open, each photosite records the intensity or brightness of the light that falls on it by accumulating a charge; the more light, the higher the charge. The brightness recorded by each photosite is then stored as a set of numbers that can then be used to set the color and brightness of dots on the screen or ink on the printed page to reconstruct the image.


  • Until recently, charge-coupled devices (CCDs) were the only image sensors used in digital cameras.
  • They have been well developed through their use in astronomical telescopes, scanners, and video camcorders.
  • A charge-coupled device (CCD) gets its name from the way the charges on its pixels are read after an exposure. After the exposure the charges on the first row are transferred to a place on the sensor called the read out register. From there, the signals are fed to an amplifier and then on to an analog-to-digital converter. Once the row has been read, its charges on the readout register row are deleted, the next row enters, and all of the rows above march down one row. The charges on each row are "coupled" to those on the row above so when one moves down, the next moves down to fill its old space. In this way, each row can be read-one row at a time.


  • Image sensors are manufactured in wafer foundries or fabs. Here the tiny circuits and devices are etched onto silicon chips. The biggest problem with CCDs is that there isn't enough economy of scale. They are created in foundries using specialized and expensive processes that can only be used to make CCDs. Meanwhile, more and larger foundries across the street are using a different process called Complementary Metal Oxide Semiconductor (CMOS) to make millions of chips for computer processors and memory. This is by far the most common and highest yielding process in the world. The latest CMOS processors, such as the Pentium III, contain almost 10 million active elements. Using this same process and the same equipment to manufacturer CMOS image sensors cuts costs dramatically because the fixed costs of the plant are spread over a much larger number of devices.
  • CMOS image quality is now matching CCD quality in the low- and mid-range, leaving only the high-end image sensors still unchallenged.
  • CMOS image sensors can incorporate other circuits on the same chip, eliminating the many separate chips required for a CCD. This also allows additional on-chip features to be added at little extra cost. These features include anti-jitter (image stabilization) and image compression. Not only does this make the camera smaller, lighter, and cheaper; it also requires less power so batteries last longer.
  • CMOS image sensors can switch modes on the fly between still photography and video. However, video generates huge files so initially these cameras will have to be tethered to the mothership (the PC) when used in this mode for all but a few seconds of video. However, this mode works well for video conferencing although the cameras can't capture the 20 frames a second needed for full-motion video.
  • While CMOS sensors excel in the capture of outdoor pictures on sunny days, they suffer in low light conditions. Their sensitivity to light is decreased because part of each photosite is covered with circuitry that filters out noise and performs other functions. The percentage of a pixel devoted to collecting light is called the pixel’s fill factor. CCDs have a 100% fill factor but CMOS cameras have much less. The lower the fill factor, the less sensitive the sensor is and the longer exposure times must be. Too low a fill factor makes indoor photography without a flash virtually impossible. To compensate for lower fill-factors, micro-lenses can be added to each pixel to gather light from the insensitive portions of the pixel and "focus" it down to the photosite. In addition, the circuitry can be reduced so it doesn't cover as large an area.

Wednesday, December 20, 2006

SCH-V960 : World’s First ‘Optical Joystick’ Phone

  • Samsung is back to their "world's first" ways again, this time revealing the SCH-V960. Which is having optical joystick, instead of just in four directions like most directional controls on cellphones.

  • Optical Joystick is quite similar to cursor of a mouse on a laptop.
  • Optical sensors will read and react to users' finger movement, thus breaking down the traditional four-way menu navigation and providing 360 degrees of freedom.

  • Samsung V960 includes a 'Smart Lighting' feature that automatically controls the brightness of the LCD screen and keypad. By using the 'Smart Lighting' feature, users are protected from eye strain and will minimize power consumption for increased efficiency.
  • Other Specification of the mobile phone:

Camera: 2 Mega pixel Camera

Display: 2.12” 240 x 320 262K Color TFT

Features: MP3/VOD/MOD

Illumination sensor

Bluetooth® / USB

Document Viewer

Memory: MicroSD external memory

Size: 97 x 47.5 x 18.6 mm

Weight: 102g

Tuesday, December 19, 2006

LAPTOP: MHX2300BT, Fujitsu going to launch First 300GB 2.5” Hard Disk

Fujitsu Hong Kong Limited going to launch new mobile HDD MHX2300BT for laptop.

  • They are going to offer storage space of 250GB and 300GB.
  • This is the first 2.5" PMR hard disk drives in the industry to attain these high levels of capacity.
  • The MHX2300BT series will begin shipping in the first quarter of 2007.
  • The launch follows Fujitsu's successful release of the world’s first 2.5" Serial ATA (SATA) hard disk drive earlier in March, which features up to 200GB of storage space.
  • Benefits of the Fujitsu second generation PMR products include best-in-class low power consumption at 1.6W.
  • High shock tolerance and near-silent operation.


Capacity: 250/300GB
Rotational Speed: 4200 RPM
Interface: SATA 2.5, ATA-8
Native Command Queuing
DIPM and HIPM Supported
Staggered Spin Up & Active LED Supported
Hot Plug
Best in Class Read / Write Power Consumption: 1.6W typ.
Idle Power Consumption: 0.5W typ.
Track to Track Seek Time: 1.5ms typ.
Host Transfer rate: 150MB/s max.
Operating Shock: 300G (2ms)

RoHS Complient

Monday, December 18, 2006

Mobile Phone: GSM & CDMA

What are the differences between two mobile communication technologies GSM and CDMA? The main difference lies in the manner in which users share the common resource. GSM does it by chopping up the channel into sequential time slices. Each user of the channel takes turns transmitting and receiving in a round-robin fashion. In reality, only one person is actually using the channel at any given moment, but he or she only uses it for short bursts. He then gives up the channel momentarily to allow the other users to have their turn. This is very similar to how a computer with just one processor can seem to run multiple applications simultaneously.

CDMA on the hand really does let everyone transmit at the same time. Conventional wisdom would lead you to believe that this is simply not possible. Using conventional modulation techniques, it most certainly is impossible. What makes CDMA work is a special type of digital modulation called "Spread Spectrum". This form of modulation takes the user's stream of bits and splatters them across a very wide channel in a pseudo-random fashion. The "pseudo" part is very important here, since the receiver must be able to undo the randomization in order to collect the bits together in a coherent order.
Advantages of GSM

  • GSM is mature, more stable network with robust features. Used since mid-80, well proved.
  • Less signal deterioration inside buildings.
  • Talktime is generally higher in GSM phones
  • The availability of Subscriber Identity Modules (SIM) allows users to switch networks or handsets.
  • International roaming permits subscribers to use one GSM phone in almost all part of world.

Disadvantages of GSM

  • Pulse nature of transmission interferes with some electronics, especially certain audio amplifiers.
  • Intellectual property is concentrated among a few industry participants, creating barriers to entry for new entrants and limiting competition among phone manufacturers.
  • GSM has a fixed maximum cell site range of 35 km, which is imposed by technical limitations.
Advantages of CDMA
  • Capacity is CDMA's biggest asset. meaning that the carrier can serve more subscribers.
  • Increased cellular communications security.
  • CDMA uses precise clocks that do not limit the distance a tower can cover.
  • CDMA consumes less power and covers large areas so cell size in CDMA is larger.
  • CDMA is able to produce a reasonable call with lower signal levels. Signal can reach extended area - beneficial to rural users situated far from cells.
  • CDMA's variable rate voice coders reduce the rate being transmitted when speaker is not talking, which allows the channel to be packed more efficiently.
  • Has a well-defined path to higher data rates.

Disadvantages of CDMA

  • Most technologies are patented.
  • A big problem facing CDMA systems is channel pollution. This occurs when signals from too many base stations are present at the subscriber's phone, but none are dominant. When this situation occurs the audio quality degrades rapidly, even when the signal seem otherwise very strong. Pollution occurs frequently in densely populated urban environments where service providers must build many sites in close proximity.Because CDMA towers interfere with themselves, they are normally installed on much shorter towers. Because of this, CDMA may not perform well in hilly terrain.
  • Since CDMA is available in lesser part of world, roaming facility may not be available while traveling to other countries.

Sunday, December 17, 2006

HDTV: Contrast Ratio.

Before comparing different HDTVs available in the market, it is necessary to know the parameters on which basis we can compare them. One of those parameters is ‘Contrast Ratio’.

  • Contrast ratio denotes the difference between the brightest whites and the darkest black a display can show.
  • The higher the contrast ratio, the greater the ability to show subtle color details. A 500:1 ratio means white is 500 times brighter than black.
  • Normally A contrast ratio of 400:1 or higher is good.
  • Be careful though. Manufacturers often overstate this number and it's a good idea to compare screens side-by-side with high contrast scenes.

Panasonic TH-42PX60U 42


Sony KDL-46XBR2, 46 Inch Bravia XBR


Panasonic TH-50PX60U 50


Sony KDL-40XBR2 40" Bravia XBR


PANASONIC TH-42PX600U 42" Plasma HDTV Television

3000: 1

Panasonic TH-50PX600U 50 in Plasma TV


Sharp AQUOS® LC-52D62U


Sony KDLV40XBR1 40" High Definition XBR LCD TV


Sharp Aquos LC-42D62U 42" 1080P High Definition LCD Television


Samsung LNS3251D 32" LCD Television


Here are some link if you are looking for more info on this subject :

Saturday, December 16, 2006

Nokia E62: A brief Description.

This model is based on previous E61 with some changes .


- dimensions are 117 x 69.7 x 14 mm, 108 cc and his weight is 144 g.

- Processor: 235 MHz TI OMAP

- The E62 more like a office phone. Not great to play games. But its equipped with office suite including a word processor, spreadsheet, and a full web browser

- Large, easily readable screen- even in sunlight!

- Light (only 5.08 oz) and Slim (0.7”)

- Globally Accessible (Quadband EGSM 850, 900, 1800 & 1900).

- Nokia advertises up to 7 hours of talk time with the E62.

- It have support for miniSD memory cards, and its internal memory is 80 MB.

- Data connections that are available:

GPRS Class 11

EDGE Class 10, 236.8 kbps,

Bluetooth v2.0

infrared and



- The E61 has support for the European 3G networks, while the E62 does not support any 3G.

- The E61 has Wi-Fi, while the E62 doesn't.

- No camera.

Here are some links you might want to visit for some more information.

Casio Exilim Zoom EX-Z700: 10 Points to know

  • Very slim, easily fit in pocket or ladies bag.
  • 7.2 million effective pixels; 3X optical zoom
  • EX-Z700’s Super Bright LCD is both big and bright: the 2.7-inch screen with 1200cd/m 2 brightness is easy to see, even on a sunny day. At 7.2 megapixels, the high-performance EX-Z700 ensures crystal-clear image output for both printing and screen
  • long-life battery packs enough power for around 460 still images on a single charge
  • Auto Framing : keeps dynamic subjects like at the center of the photograph. In Auto Framing mode, a thin, outlined frame appears on the LCD, centered on the moving subject of the photo.
  • Layout Shot: With new Layout Shot mode, photographers can combine multiple shots.
  • Available in silver and grey color.
  • Anti Shake DSP for reducing photo blur due to shaky hands or moving subjects.
  • BEST SHOT modes deliver great photo results simply by selecting one of 37 sample images to represent the current photo scene.
  • High-speed start-up enables shooting approximately 1.4 seconds after power up.

Thursday, December 14, 2006

Digital camera : Image stabilization

Image stabilization is the technology that compensates the camera shaking while taking picture. It is not possible to hold the camera perfectly still while taking picture. This is more acute while taking picture when light is low. When light is low, camera uses slower shutter speed. That means camera lens is kept open for longer. The longer the lens is open; there is more chance of camera movement. The result is blurry picture.

For this problem Image stabilizer is the solution.

There are two types of Image stabilizer available optical and electronic image stabilizer.

Again there are two types of optical stabilization: lens shift and CCD shift.

Optical stabilization: Here the approach is to keep steady the elements in side the camera's lens. Even if the camera moves, the movement of lens element stays relatively still. By steadying the image projected into the camera, blurry pictures are minimized. A camera with image stabilization uses a built-in gyro sensor to detect hand movement and then relay that information to a tiny microcomputer inside the camera. The microcomputer calculates the amount of compensation needed, and a linear motor then shifts the optical image stabilizer lens as necessary. This approach is used in some Canon, Nikon, Olympus, Panasonic, and Sony cameras.

CCD Shift: Here the approach is to move camera’s electronic CCD image sensor to compensate the camera movement. The sensor is mounted on a platform that moves in the opposite direction as the movement of the camera. Konica, Minolta uses this technology for image stabilization.

Electronic stabilization is also of two types. First one high sensitivity mode, here camera boosts the ISO sensitivity until you get a shutter speed fast enough for a sharp photo. Other type is some kind of post processing of a photo to remove the blur. Most often this is like using "unsharp mask" in Photo editor.

Wednesday, December 13, 2006

HDTV: What is 1080p Resolution?

If you are going to spent out thousands of dollars for a big high-definition television set, you probably want to get the best one available in your budget. In that case it is always good to have fair idea about the basic technologies of the product.

You must have seen different manufacturers claiming there HDTV as full HDTV and 1080p. But what does that mean?

1080P is the shorthand name for a category of video modes. Here 1080 represents 1080 lines of vertical resolution. Normally the ratio of Horizontal and vertical lines is 16:9, implying a horizontal (display) resolution of 1920 dots across and a frame resolution of 1920 × 1080 or about 2.07 million pixel.

And ‘P’ stands for progressive and means that each individual image that appears on the screen is created from top to bottom, much like a painter fills in a wall one stroke at a time. There could be another option here i.e. "i", refers to interlaced, which means every other line is painted--typically odd lines first--and then the process starts over again to fill in all the even lines.

Our conventional TVs have a resolution of 480i.

Now many HDTV manufacturng companies coming out different model of 1080p. But the quality of picture you are going to get in your HDTV not only depends upon the resolution, here a major factor is broadcasting. If you have source material, or content, that's created with 1080p resolution and display it on a screen that supports 1080p, the quality is absolutely stunning, with a level of detail that is more than twelve times higher than that of traditional standard definition TV.