Home Threatre

More then just a lucury home threatre is fast becoming a big part of the home entertainment scene in countless living rooms
Movies experience is getting better with time as home theatres from leading brands like LG, Philips, Samsung and Sony have hit the markets of home theatre emerged in 1950s in the United Stated and then it was known as home cinema. At that time it was considered an item of elite class. Now that notice no longer holds true, as it has become a matter of choice and preference.
The entire system has evoledfrom Kodak 8 mm film projectors equipment in 1950s to basic and common feature such as DVD player, CRT large screen television, surround sound speaker with sub woofer, Blu-rey player or media centre appliance or computer with a 10-foot user interface, a hight definition video projector and projection screen with a 100 plus diagonal screen size widescreen 16:9 as pect-ratio format, and a several thousand-watt home theatre reviver. The most advance system are 3D TV technology and 3D TV enabled home theatres and 3D bluray players which use special glasses to aid viewers to watch 3D TV movies and sporting events.
LG
LG home theatre systems claim to deliver imagery so real, with sound feel like he or she is right in the middle of the action. According to kusum lama yanjon, marketing department CG eletronics pvt ltd,there are two LG home theatre system available. The latest modle is HT- 604sk with price range of 26,900.
Some of the features of HT-924SF
• 300wW Home theatre system
• Jersey type satelite speaker
• VSM pro (virtual 10.1Ch plus voice and bass enhancer)
• USB plus (DivX Audio and picture playback)
• Portable Audio in,front MIC jack
Philips
Perfectly turned to make the most of advanced screens, Philips home theatre systems boast features that take your home cinema experience to another lavel. The Amdisound system of Philips is very popular according to Saurbh jyoti directore of jyoti groups as it is easier to setup and gives a cleaner look. The company has sold 300 sets in the past six months. “It is technologically more advanced and since Philips is synonymous with in novation this modle is popular says jyoti. As LCD sales is growing, ambisound home theatre systems perfectly com pliments the LCD set in terms of desine and simplicity. It can be hung on the wall below LCD TV or put on top of a table. It plays any CD DVD,Mp3,radio, USB port and has an ipod dock also, making it a come entertainment system, explains jyoti.
Available home theatre system at Philips
• HTS 6100(Ambi-sound) Rs 59,990
• 2HTS 6600 (Ambi-sound) Rs 69,990
• 3HTS 8140(Ambi-sound )Rs 89,990
• 4HTS 9800-Rs 89,990
• 5HTS 9810-Rs 139,990
Samsung
Samsung home theatre system offer everything form fully loaded in-home cinemas to stylish, wall-mountable audio systems, convenient rear wireless speakers and accessories amities roy marketing and communication manager of HIM electronics private limited, authorised dealer of samsung, says, “people are appealed by products which are aesthetically beautiful” SAMSUNG HT-X810TIS the latest offering and according to Roy the product is priced at Rs 49,990 and has an aggregate sale of 30 unites a month. It is a System of unique design for enhancing lifestyle and interior decoration. The wireless sub woofer completes the new style of home without wires.
Some feature of
SAMSUNG HT-X810T Are
• Excelent audio and video quality
• Good connectivity options, including optical HDMI,USB and Bluetooth
• Easy setup and auto-painning with wireless subwoofer.
• Main unites is easily wall-mountable
Other models are Samsung HTZ 230 HTWSI, HTTZ425 and HTX725 with maximum retail price of 23,990, Rs 27,990Rs 34,990 and Rs 39,990 respectively.
Sony
The home theatre system from Sony lets you crank up the volume and experience your favorite movies with sensationl surround sound. Subash Shrestha, kantipath showroom manager of nepa Hima Tade link privat limated, sole distributor of Sony is Blu ray (BDV-E800W),Which is priced at Rs 1,25,000.It supports the latest HD audio codecs and virtual 7.1 ch surround sound for crystal clear cinematic audio Other blu ray system (BDV-E300) is also available which costs 85,000.
Other feature of
BDV-E800W Include:
• BD-live(Ethernet connection)
• S-Master digital amplifier
• S-air digital wireless
• Bravia sync
• X.V colour technology
• Digital media port.

New Edition of Kaspersky Anti-virus

Kathmandu sagar technology pvt.ltd, the authorise sole distributer for Nepal of kaspersky prodducts, has launched kaspersky Anti-virus 2011, kaspersky internet Security 2011 and kaspersky small offce security
Kaspersky Anti-virus 2011 offers real-time automated protection from a range of IT threats. To provides the basic tools needed to protect the PC the award-winning technologies work silently in the background while one enjoys the digital life
Kaspersky Internet Security 2011 on the other hand, has everything one needs to says safe and secure while surfing the web.It proviedes constant protection for the user and their family whether one works, banks, shops or plays online.
Similarly kaspersky small Offiec security ia a solution created for small offices. Its fast ans easy in stallation, with sensible defaults lets the user protect all their systems effortlessy, giving them the peace of mind to focus on running their business without worrying about security threats.
The company has sold more than 150,000 copies o the software through its 250 reselling agents around the country since 2008. The single user version of the antivirus, with one-year licence agreement, can be purchased at Rs 1,000.
The make the service reliable and convenint, kaspersky lab Hyderabad India on June 1, 2010. The lab provides full phase services related to kaspersky. According to basudev lakhe, the executive director of sagar infosys, the user of kaspersky will grow exponentially and the service will be quick and smooth, since Nepal and India are geo-graphically and culturally linked.

Floppy Disk

Floppy disks are made of Mylar (a plastic material) coated with magnetic material (iron oxide or barium ferrite). Floppy disk is a soft magnetic disk, rather it is a very thin piece of flexible plastic, it is called floppy disk because its disk can be bent unlike hard disk. Floppydisks are also called diskette. They are removable disks. The floppy drive is a computer component to read/write from or to the floppy disk. Unlike hard disk, floppy disk can be removed from the floppy drive. The floppy (or flexible) disk is kept within a plastic jacket. A metallic shutter protects the media access hole. The drive manipulates the shutter, leaving it closed whenever the disk is not in a drive. So, the media is completely insulated from the environment and from user's fingers.
Different sizes of floppy disks are:5.25 inch diameter. It was 8 inch in diameter when it was invented. A floppy disk rotates at about 300 rpm. Its average access time is 150-250 ms.

Inch Floppy Disk
The 3.5 inch floppy disk's read/write head window is covered with a sliding metal cover that is a metal shield. The disk drive pushes the cover aside when a disk is inserted into the drive unit. There is a hole at the centre for drive spindle. There is a write-protect notch to protect the stored information. It uses a sliding plastic button, which can slide to either of the two positions. One position allows reading, writing and erasing. The other position allows only reading. When light is visible through the notch, then only the disk is write protected. The protective cover of a 3.5 inch floppy is hard plastic. The storing capacity of a 3.5 inch high density floppy is 1.44MB. It uses 80 tracks per surface, 135 TPI (tracks per inch), 18 sectors per track, 360 rpm and store 512 bytes per sector. Both sides of the disk store information.

CRT Display Unit & Liquid Crystal (LCD)

A (Cathode Ray Tube) display unit is used output device. It displays the data or information received from the computer. It can display alphanumeric characters and graphs. Though the CRT is basically an output device it can perform limited input function when used in conjunction with a light pen. The CRT screen is similar to a TV screen. A CRT is a vaccum tube. An electronic beam is produced by the electron gun located at the back portion of the tube. The electron beam is directed towards the front of the CRT (i.e. CRT screen). A coating of phosphor material is made on the inner surface of the screen. The phosphor emits light when it is struck by electron beam. The color of the emitted light depends on the phosphor substance used. A CRT display may be either monochrome (i.e. only one color) or color (i.e. multicolor). Monochrome displays are available in green, blue, orange, yellow, pink, red and white depending on the type of the phosphor material used. Color displays are produced on CRT screen on the same principle as they are produced on color TV screen. To produce color displays three phosphors: red, blue and green are used. The coating of these phosphor materials is made in such a way that dots of these three phosphors in a triangular spot are so close that they appear as a single dot. Three separate electron beams are employed to illuminate the dots of three different phosphors. By varying the intensity of the three electron beams the intensity of red, blue and green dots is varied. This gives the appearance of a triangular spot of the desired color. Black and white colors can also be obtained if all the three dots are of same intensity.

The display mode may be either of graphics mode. The graphical elements are composed of picture elements called as pixel. The term resolution is used to describe the number of pixels per unit area of the screen. If there are few pixels per unit area, we say low resolution display and if many pixels per unit area we say high resolution display. The higher the resolution, the greater the detail can be displayed. The console mode display consists of 24 lines; each line consists of maximum 80 characters per line.

LCD (Liquid Crystal Display)
In LCDs a liquid crystalline material is sandwiched between two glass or plastic plates. The front plate is transparent and the back plate is reflective. There is a coating of thin film on the front plate. The coating is transparent and conductive. Its sections are in the shape of desired characters. An electrically conductive film or backplane is put on the back plate. A voltage is applied between a segment and the back plate to create electric field in the region under the segment. Commonly available LCDs are of two types:
-dynamic scattering
-field effect
In dynamic scattering type, the molecules are aligned in one direction under the segment where field is present. The crystalline molecules reflect more light in this condition and this produces etched glass looking light characters on a dark background. In field effect type molecules are polarized to absorb light where electric field is present. This produces dark characters on a silver gray background. LCDs do not emit their own light. Therefore, a light source is to be used. LCDs simply change the reflection of available light. Today, most LCDs used are of the types that produce dark images on a silver background. LCDs are lightweight and consume little power which makes them attractive for portable devices like laptop, PDA and mobile phone. The viewing angle of LCD screens is less.

Wireless Mouse

It’s time to experience superb comfort from the lastest generation of ergonomic laser devices for notebook users. Available in wired or wireless design, the Genius Ergo 325/725 Laser devices have more advanced features and are easy to bring along with you.
Embedded with an advanced laser engine, both the Ergo 325/725 laser provide incredible sensitivity for most surfaces and track much better than a regular optical mouse. For the wireless Ergo 725 laser with its precision technology, you avoid any tangled wires and it includes a storable receiver feature. Also it has the power saving technology and the power switch which extends battery life for up to six months with just one battery so you save on battery purchases and contribute to environment protection.
Other useful features on the both devices include the Vista Flip 3D for instant access to three dimensional viewing for all opened windows and Zoom in/out function so you can enlarge or reduce the viewing size of Internet pages or documents. For true ergonomic comport that enchances your efficiency and reduces your wrist tension after long time usage, choose the Ergo 325 Laser which is available in two colors: Ruby red and silver, or upgrade to the wireless Ergo 725 Laser. Contact your sales representative for more information.
The Wireless M505 Mouse is a good choice for anyone using Logitech's Unifying USB transceiver (which also works with its keyboards), but it's priced a bit high considering its limited button layout. The latest mouse in Logitech's seemingly endless line of input devices is the Wireless Mouse M505, a $50 portable pointer with an attractive design that comes in three colors: black, gray, and red. It's also one of the first devices to feature, which allows you to connect up to six devices including keyboards and other mice to the same mini-USB transceiver. The technology promises to free up USB ports for other devices, but it also means that you're marrying into the Logitech family. The mouse is accurate and comfortable, but for $50, we' ... Expand full review
The latest mouse in Logitech's seemingly endless line of input devices is the Wireless Mouse M505, a $50 portable pointer with an attractive design that comes in three colors: black, gray, and red. It's also one of the first devices to feature, which allows you to connect up to six devices including keyboards and other mice to the same mini-USB transceiver. The technology promises to free up USB ports for other devices, but it also means that you're marrying into the Logitech family. The mouse is accurate and comfortable, but for $50, we're disappointed by the lack of thumb buttons. If you're looking for a no-fuss wireless mouse to throw into a laptop bag and run, we'd recommend the which offers many of the same features and more for $10 less

Optical Storage

Optical storage Compact Disk(CD) was introduced in 1983. It was actually developed for the replacement of audio tape. The CD is a non erasable disk. The huge commercial success of the CD lead for the development of low cost optical storage technology has revolutionized computer data storage. Following are the variety of optical storage:

CD-ROM (Compact Disk Read Only Memory)
The CD-ROM is a read only optical storage medium. They are capable of holding above 700 MB of data, 74 minutes of audio or video. Acessing data from a CD-ROM is quite a bit faster than floppy disk but considerably slower than a modern hard disk.
This disc is made of a polycarbonate wafer, 120 mm in diameter and 1.2 mm thick, with a 15 mm hole in the center. The wafer base is coated with metallic film, usually an aluminum alloy. The aluminum film is the portion of the disc that the CD-ROM drive reads for information. The aluminum film is the covered by a plastic polycarbonate coating that protects the underlying data. CD-ROMs are single sided. Reading the information back is a matter of reflecting a lower-powered laser off the aluminum film. A receiver (or light receptor, also called photo detector) notes where light is strongly reflected or where it is absent or defused. Diffused or absent light is caused by the pits made the CD. Strong reflection of the light indicates no pit that is called land. The individual pits on a CD are 0.12 microns deep and about 0.6 microns wide (one micron is equals to one-millionth of a meter). By the collection of reflected and diffused light microprocessors translate the light pattern back into data and sound.
CD-ROM data is recorded using a technique called constant linear velocity. So that the disk must spin faster while reading the inner track area, and slower while reading the outer track area.

CD-R(CD-Recordable)
The CD-R media is coated with a photosensitive organic dye that has the reflective properties. The unrecorded CD-R disc can be assumed as one long land. The photosensitive organic dye within a CD-R disc changes from a reflective state to a non reflective state when it is exposed to the laser recording beam of a CD-R drive. The reflective state acts as land and non reflective state acts as pit as in CD-ROM. The change of state is permanent, so we also call WORM (Write Once Read Many)
medium.

CD-RW(CD-Rewriteable)
Unlike CD-R, the change is not permanent in CD-RW. The active layer of a CD-RW disc is an Ag-In-Sb-Te (silver-indium-antimony-tellurium) alloy that in its original state, has a polycrystalline that makes it reflective.

When the CD-RW drive writes to the disk, the laser uses its highest power setting, known as Pwrite, to heat the active material to a temperature between 500 and 700 degrees Celsius, causing it to liquefy. In its liquid state, the molecules of the active material flow freely, losing their polycrystalline structure and taking on an amorphous state. When the material solidifies in this amorphous state, it loses its reflectivity. By selecting firing the laser, the drive leaves parts of the disc in polycarbonate state, forming the land, and parts in the amorphous state forming the pits.
To reverse the phase of a specific area on a disc, the laser operates at a lower power setting (Perase) and heats the active material to approximately 200 degree Celsius at which it reverts back from its amorphous to its crystalline state and becomes reflective again.

DVD(Digital Versatile Disc)
The improved form of CD-ROM is called Digital Versatile Disc. The DVD was introduced for the replacement of video tape (Video Home System or simply VHS). The DVD took video into digital age. It delivers movie with impressive picture quality and can be accesed randomly like audio. In DVD vast volume of data can be stored and used for storing game, education software, full length movie etc. DVD offers an initial storage a capacity of 4.7 GB of digital information on single sided, single layered disc the same diameter and thickness of CD-ROM. Bits are packed more closely on a DVD than CD. Today DVD's are available as DVD-R to write once and DVD-RW for read and write.

AUDIO RECOARDIN MIXTURE

10–in/10-out PCI/Rack Digital recording system with MIDI and Digital I/O includes Ableton live lite music production software, so you can make music right away
Recongniszed around the world as the top choice in host-based PCI digital audio solutions, the rack-mount Delta 1010 is designed to handle the needs of the most demanding project and professional studios. Superb engireering and ultra-high quality converters deliver fidelity surpassing systems that cost many times more. Multiple inputs accommodate recording numerous tracks simultaneously, including zero-latency monitoring for seamless overdubs. Multiple outs route individual tracks or soft synth/sampler timbers to a mixing console, or directly drive up to 7.1 surround sound systems. The analog outs also remain live for monitoring while mixing or transferring digital singals via S/PDIF. MIDI I/O rounds out everything you need to take advantage of today’s music software. Combine up to four Deltas in your system for a maximum of 32 analog and four stero S/PDIF inputs and outputs. All Delta cards contain a 36-bit embedded DSP enabling a software- driven patchbay/router for all analog and digital I/O- all with extremely fast throughput for low-latency software mointoring. A single unified control panel provides settings for clock and sample rates, buffer sizes, individual singal levels for every input and output, adjustable +4dBu/-10dBV pad controls and digital I/O control on up to four installed Delta cards. All controls are also easily accessible through most professional audio software applications for seamless intergration and operation.

The offers the same features and high performance as the Delta 66, but is designed for the user who does not require digital I/O. And like its big brother, the Delta 44's breakout box handles four balanced/unbalanced, +4dBu or -10dBV signal level analog inputs and outputs. From this article we'll make a comparison of Delta 66 and M-Audio Delta 44 PCI to see what they agree and disagree