2006-03-13T21:03:00.000-08:00

Just a few short years ago, the expectations of cell-phone users centered around one capability: being able to reliably conduct voice calls while they were away from a wired telephone set. Since then, impressive technological advances have been achieved. The brick-sized, transportable phone sets of yesteryear have morphed into soon-to-be-available, 6+-megapixel camera phones. Such devices offer DVD-quality video and a high-fidelity music player. They also flaunt a high-end, 3D-graphic gaming console and high-speed wireless-Internet-connection combinations.

To put it simply, cellular phones have stopped being just telephones. These "Swiss army knives" of the personal communications system are now the most impressive example of the convergence of computing, communications, and personal entertainment. With these devices, one can generate, share, enjoy, and store multimedia information as part of today's on-the-move lifestyle.

For the microelectronics industry, however, these supercomputing organisms invite a complex problem: Keeping these products running on very small batteries for longer periods of time is a major challenge. As a result, special emphasis is now being dedicated to extending the battery life of such systems. Designers are expanding their operating time from a few minutes to many hours while standby times rise from hours to weeks.

In doing so, designers are stressing a multi-level matrix of theoretical and practical limits—from the fundamental laws of physics to system-level-optimization techniques. These techniques cannot be added to an existing system later on. They are major components of both application hardware and software. For optimal results, designers must therefore make use of energy-reduction-enabled, foundation-semiconductor structures. Such structures include logic elements, input/output cells, and memory blocks. At the same time, designers must implement dynamic power-consumption-management procedures.

This article will explore some of the most advanced system-level energy-management techniques that are currently in development. It also will analyze how these techniques are enabled at the foundation-semiconductor-structure level. A quantitative estimate of the resulting battery-life extension will then be calculated for a system. This estimate will make smart usage of all of the techniques that are now available in a commercially available, semiconductor Intellectual-Property (IP) product.

To better visualize the power-management problem faced by a next-generation cell-phone designer, consider the high-level block diagram shown in FIGURE 1. For a device of such complexity, the only strategies that will effectively optimize energy consumption must include run-time-behavior analysis. Such analysis translates into a continuous monitoring of all of the requested services and performance levels at every individual block of the system. It selectively turns off or adjusts the performance of those system elements.

Cingular L1400 Camera Phone

2005-12-26T09:28:00.000-08:00

Product Specifications

Accessories

* AC Travel Charger*
* Standard Li-Ion Battery*
* Headset
* Leather Case
* Vehicle Power Charger
* Serial Data Cable
* * Included with phone

Colors Available
Silver

Full Description

* With a built-in camera and mobile media features, the L1400 is a treat for the eyes - outside and inside. Two color displays for multimedia impact. AOL

Key Features

* Integrated VGA Digital Camera with One-Touch Access Button
* 65K Color Internal TFT LCD
* 65K Color External OLED
* Advanced Messaging Features Including Instant Messaging
* Photo Caller-ID on Both Internal and External Displays
* Self-Portraiture Capability with Phone Closed
* Save Up to 71 Separate 96x96 Pixel Images*
* Digital Zoom (1x, 2x, 3x, 4x)
* White Balance Adjustment (Auto, Daylight, Incandescent, Cloudy, Fluorescent)
* Color Effects Adjustment (Sepia, Mono, Color)
* Image Size Adjustment (96x96, 128x160, 160x120, 320x240, 640x480 pixels)
* Brightness Adjustment
* Shutter Sound (3 Sounds & Silent)
* Multishot Adjustment - up to 9 shots in a row
* Web Browser (WAP 2.0) with One-Touch Access Button
* Mobile Instant Messaging Using AOL

Specifications
Freq: 850/1800/1900 MHz Systems (Tri-Band)
Network: GSM/GPRS World Capable
Size: 3.52" x 1.89" x 0.97"
Weight: 3.35 oz
Internal LCD: 65K color TFT, 128 x 160 pixels, 8 lines
External LCD: 65K color OLED, 96 x 96 pixels, 5 line
Battery: 830 mAh Li-Ion
Talk Time: 3.3 hours (Digital)*
Standby: 220 hours (Digital)*
Phone features and specifications are subject to change without prior notice.
*Certain features may use more power and cause actual standby and talk time to vary.

Cellular Mobile

Cingular L1400 Camera Phone