Kamis, 11 Juni 2009

GSM

GSM (Global System for Mobile communication) is a digital mobile telephone system that is widely used in Europe and other parts of the world. GSM uses a variation of Time Division Multiple Access (TDMA) and is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA). GSM digitizes and compresses data, then sends it down a channel with two other streams of user data, each in its own time slot. It operates at either the 900 MHz or 1,800 MHz frequency band.

GSM is the de facto wireless telephone standard in Europe. GSM has over one billion users worldwide and is available in 190 countries. Since many GSM network operators have roaming agreements with foreign operators, users can often continue to use their mobile phones when they travel to other countries.

Mobile Frequency RangeRx: 925-960; Tx: 880-915
Multiple Access MethodTDMA/FDM
Duplex MethodFDD
Number of Channels124 (8 users per channel)
Channel Spacing200kHz
ModulationGMSK (0.3 Gaussian Filter)
Channel Bit Rate270.833Kb

Selasa, 19 Mei 2009

Sony Ericsson K800i

The mobile phone we're looking at today manages not only to boast a maximum photo resolution of 2,048 x 1,536 thanks to its 3.2 megapixel camera, but it also finds room for an autofocus mechanism, a comparatively bright f2.8 lens, image stabilisation and macro capabilities to boot. Well, Sony Ericsson had to pull off something a bit special before it could be given the same name as Sony's hugely popular digital camera family, didn't it?

sony ericsson cyber-shot k800i

The K800i's roots are undeniable. The moment you set eyes on it you're reminded of a stretch K750i, no bad thing given the K750i's success. Sony Ericsson has stuck with the tried and tested matte black body and silver accents, though it has replaced what little of the front fascia is visible with an black brushed aluminium finish.

Despite being only a centimetre or so longer than the K750i, most of that extra real estate has been devoted to the screen and the area immediately above it where the VGA video-call camera resides. The result of this is that the keypad has now been crammed into the lower quarter of the handset and though the keys are only fractionally smaller, combining this with their position makes it far more awkward to use quickly and accurately.

The K800i's screen is an excellent 2in, 320 x 240, 262,144-colour unit. It's bright, vivid and sharp, and its visibility holds up well under bright sunlight. A silvered border around the screen does a sterling job of reflecting and thereby amplifying the herds of fingerprints that frustratingly seem to congregate on the high-shine surface. Keep that micro fibre cloth handy.On either side of the earpiece are a couple of raised strips that I initially assumed were there to protect the screen if you set the phone down face down. While they do serve this purpose, in reality they're buttons. Pressing them in standby mode activates either the camera album app's full screen or thumbnail image views - when the camera's running, they call up the shooting mode and scene mode settings.

Sited either side of the joystick are the familiar left and right selection keys and below these the back key and the clear or cancel key. Joining them are two even smaller keys, one for internet access, the other an activity menu key, which is used to call up a selection of tabbed screens. From here you can manage your shortcuts, check new events like missed calls and new messages, return to or close running applications, or access internet search and bookmarked pages.

The keypad backlighting is white and gives an even illumination that makes the pad a joy to use at night. The menu buttons and joystick however glow with a pale lavender colour which is actually more effective than you'd imagine.

On the right-hand side of the phone we find an IrDA port and a camera button. There's also a two-way rocker switch which sets earpiece volume levels during a phone call and controls the level of digital zoom when in camera mode. Over on the other side all you'll find is the audio play/stop button which will activate playback of whichever song or remaining part of a song is cued up in the music player and do so from any available screen. A hinged plastic cover below this hides the M2/Memory Stick Micro memory card slot.

sony ericsson xperia


Sony Ericsson XPERIA X1 smartphone

Among the many product announcements released by Sony Ericsson today the most significant has to be the release of the new XPERIA line by introducing the XPERIA X1. The new XPERIA brand marks a new era for Sony Ericsson in mobile devices, with this sweet-looking new model featuring a whole host of communication mediums, driven from a touch screen and full-QWERTY keyboard and riding on Windows Mobile 6.

SE calls the design of the X1 an “arch slider” as it slides up to expose the full keyboard with a large 3-inch VGA display on top. The impressive list of features continues with a 3.2 megapixel camera with auto focus and video, a microSD slot and communications via Bluetooth, GPS, Wi-Fi, and quad-band GSM/EDGE, and 900/1700/1900/2100MHz UMTS/HSDPA/HSUPA.

Music and video can be played through the integrated Windows Media Player and it will also pick up local radio stations with a built-in FM tuner. Surf the internet and navigate pages on that widescreen with Internet Explorer or any other compatible browser that you might download and install. The X1 measures 110 x 53 x 16.7 mm and weighs in at 145 grams.

The new XPERIA X1 looks to be a very impressive new device and something we really can’t wait to get our hands on and try out. Sony Ericsson says the it will be available sometime in the second half of 2008 with no specifics yet on pricing, wtih colors of black or silver.


Kamis, 14 Mei 2009

Dopod 1000

The Dopod U1000 launches in Indonesia.

The Dopod U1000 handheld mini notebook computer, with a five inch screen and a global positioning system (GPS) attuned to a number of cities on Java and Bali, was launched in Jakarta on the 28th by distributor PT Sistech Kharisma, at the price of 13 million rupiah.

Dopod U1000
Dopod U1000.

David Yaohari of PT Sistech Kharisma says the GPS system on the Dopod U1000 is likely the main attraction for Indonesian buyers, because GPS systems on competing PDA’s and smartphones do not yet function optimally. [1]

Once you get out of Cibubur the screen [on other models] goes blank, there’s no map for that area yet.

To get around this problem David says a local company, Nusamap, was employed to provide more detailed maps for the Dopod U1000, with free upgrades and updates to the mapping system being available.

Other features of the Dopod U1000 include:

  • 3G, HSDPA, GPS, Bluetooth, Wi-Fi, GPRS/GSM, USB, EDGE.
  • Speakerphone.
  • SMS, MMS, email.
  • 3 megapixel digital camera.
  • Video recording and playback, and a separate camera for video calls.
  • Intel 624 mhz processor, 8320 mb of ram, 256mb of rom.
  • 2,200mAh Lithium-ion battery, rechargeable and removable, 5.5 hours life.
  • Keyboard and pen data input.

Nokia N95

Nokia N95

Nokia

Nokia N95 MORE PICTURES

General 2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 2100
HSDPA 850 / 1900 - American version
Announced 2006, September
Status Available. Released 2007, March
Size Dimensions 99 x 53 x 21 mm, 90 cc
Weight 120 g
Display Type TFT, 16M colors
Size 240 x 320 pixels, 2.6 inches, 40 x 53 mm
Sound Alert types Vibration; Downloadable polyphonic, monophonic MP3 ringtones
Speakerphone Yes, with stereo speakers
- 3.5 mm audio jack
Memory Phonebook Practically unlimited entries and fields, Photocall
Call records Detailed, max 30 days
Internal 160 MB storage, 64 MB RAM
Card slot microSD (TransFlash), up to 8GB, hot swap, 128 MB card included, buy memory
Data GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps
HSCSD Yes
EDGE Class 32, 296 kbps; DTM Class 11, 177 kbps
3G HSDPA
WLAN Wi-Fi 802.11 b/g, UPnP technology
Bluetooth Yes, v2.0 with A2DP
Infrared port Yes
USB Yes, v2.0 miniUSB
Camera Primary 5 MP, 2592 x 1944 pixels, Carl Zeiss optics, autofocus, LED flash
Video Yes, VGA@30fps
Secondary CIF videocall camera
Features OS Symbian OS 9.2, S60 rel. 3.1
CPU Dual ARM 11 332 MHz processor; 3D Graphics HW Accelerator
Messaging SMS, MMS, Email, Instant Messaging
Browser WAP 2.0/xHTML, HTML
Radio Stereo FM radio; Visual radio
Games Downloadable, N-Gage compatible
Colors Silver, Plum, Black, Pink, Red
GPS Yes, with A-GPS support; Nokia Maps
Java Yes, MIDP 2.0
- Dual slide design
- MP3/AAC/AAC+/eAAC+/WMA player
- TV-out
- Organizer
- Document viewer (Word, Excel, PowerPoint, PDF)
- T9
- Push to talk
- Voice dial/memo
Battery Standard battery, Li-Ion 950 mAh (BL-5F)
Stand-by Up to 220 h (2G) / 192 h (3G)
Talk time Up to 6 h 30 min (2G) / 2 h 42 min (3G)


Senin, 11 Mei 2009

Motorola V600

(phone photo)

Motorola's flagship GSM phone for 2004. Notable features include quad-band roaming, high-resolution TFT display, VGA camera, changeable metal casing, and Bluetooth. Also includes inverse outer display, speakerphone, Java 2, MMS with video playback, and voice dialing.


Specs


Modes GSM 850 / GSM 900 / GSM 1800 / GSM 1900
Weight 4.4 oz (125 g)
Dimensions 3.46" x 1.85" x 0.91" (88 x 47 x 23.1 mm)
Form Factor Clamshell
Stub Antenna
Battery Talk: 6.5 hours max. (390 minutes)
Standby: 175 hours max. (7.3 days)
700 mAh LiIon
Display Type: LCD (Color TFT/TFD)
Resolution: 176 x 220 pixels
Colors: 65,536 (16-bit)
transflective TFT
Platform / OS (proprietary)
Processor ?
Memory 5 MB (internal memory available to user for storage)
Phone Book Capacity 1000
plus SIM card memory

Motorola W270

Motorola W270 MORE PICTURES

General 2G Network GSM 900 / 1800
GSM 850 / 1900 - US version
Announced 2008, January
Status Coming soon
Size Dimensions 95 x 45 x 17 mm
Weight 94 g
Display Type CSTN, 65K colors
Size 128 x 128 pixels, 1.6 inches
- Second external mono display
Ringtones Type Polyphonic
Customization
Vibration Yes
Memory Phonebook 500 entries
Call records 10 dialed, 10 received, 10 missed calls
Card slot microSD (TransFlash), up to 2 GB supported
- 500 SMS messages
Data GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps
HSCSD No
EDGE No
3G No
WLAN No
Bluetooth No
Infrared port No
USB Yes, v1.1
Camera No
Features Messaging SMS, EMS, MMS
Browser WAP 2.0/xHTML
Radio Stereo FM radio with RDS, FM recorder
Games Yes
Colors lustrous silver, dark titanium gray
Languages 7 African languages, Hinglish, Bengali, Tamil ...
GPS No
Java No
- MP3 player (iMelody,MIDI,MP3,AMR formats)
- T9
- Calculator
- Built-in handsfree
- Stopwatch
Battery Standard battery, Li-Ion 940 mAh (BQ50)
Stand-by Up to 450 h
Talk time Up to 9 h