President Hisatsugu Nonaka (right) and General Chief Engineer Manabu Sanada (left) of Toshiba Personal Computer & Network Co. Nonaka says he encouraged the development team, saying "First, go for the world's best" and "Make world's firsts as many as possible."
President Hisatsugu Nonaka (right) and General Chief Engineer Manabu Sanada (left) of Toshiba Personal Computer & Network Co. Nonaka says he encouraged the development team, saying "First, go for the world's best" and "Make world's firsts as many as possible."
[Click to enlarge image]

Toshiba Corp. has announced the dynabook SS RX1, a line of 12.1-inch LCD widescreen notebook computers equipped with an optical disk drive, which the company claims is the world's lightest and thinnest series in a relevant category.

In addition to a standard model with an HDD, the company will launch a product with a 64 GB solid state drive (SSD) using flash memory. The HDD and SDD models weigh 959 and 848 g, respectively. They both measure 19.5 mm at the thinnest point.

The company claims that the dynabook SS RX1 boasts the longest battery life as of today in the category of 12.1-inch widescreen notebook computer weighing less than 1 kg.

When using the supplied rechargeable battery, the SSD model can run 12.5 hours. The new models will be released in order from June 22, 2007 at open prices. The street pricing is expected to be around 220,000-400,000 yen (USD 1,820-3,300).

In order to achieve lighter weight, thinner profile and longer battery life, the company has made numerous improvements such as a higher density mounting on a substrate, reduction in chassis thickness and sharing of antennas.

For example, SSD has contributed to slash power consumption. More specifically, the power consumption can reportedly be reduced by 12% when compared to the case using an HDD.

In addition, a 12.1-inch semi-transmissive widescreen LCD panel is employed. This also helps to reduce the power consumption because approximately 3 W that is otherwise consumed by the LED backlight can be saved by turning off the light when the machine is used outdoors, the company explained.

An ultrathin recordable DVD drive measuring 7 mm is employed so that the slim chassis can contain the drive. Although Toshiba does not specify the supplier of the DVD drive, it is supposedly a product from Panasonic Communications Co., Ltd. as Panasonic announced the world's first commercialization of the drive with a thickness of 7 mm.

The latest series are provided with built-in antennas for wireless communication such as 3G including CDMA and WiMAX. To reduce the footprint of the antennas, the company has employed "multiband antenna," a modified-shaped shared antenna for wireless LAN, WiMAX and 3G.

Reportedly, the total number of antennas required has been reduced from eight to five. However, a built-in communication module is not provided at the moment.

The company plans to launch the modules supporting these communication schemes as soon as the services start. A user will be required to select a module based on either 3G or WiMAX.

A variety of modifications were added to achieve "thinner, lighter and longer operating time." Sanada said, "We have analyzed the components one by one including screws and a cooling fan to reduce the weight." For example, the hinges are 48% lighter than the ones used in the existing model dynabook SS SX S20. The number of steel screws is reduced without sacrificing the product hardness. Specifically, the reduction was achieved by screwing two points with one screw, using adhesives and fixing the parts together by means of shape elements as in the case of some wooden puzzles. The LCD panel frame is made of polyphenylether (PPE) that weighs more than 10% lighter than polycarbonate currently used.
A variety of modifications were added to achieve "thinner, lighter and longer operating time." Sanada said, "We have analyzed the components one by one including screws and a cooling fan to reduce the weight." For example, the hinges are 48% lighter than the ones used in the existing model dynabook SS SX S20. The number of steel screws is reduced without sacrificing the product hardness. Specifically, the reduction was achieved by screwing two points with one screw, using adhesives and fixing the parts together by means of shape elements as in the case of some wooden puzzles. The LCD panel frame is made of polyphenylether (PPE) that weighs more than 10% lighter than polycarbonate currently used.
[Click to enlarge image]
The size of the printed circuit board is approximately 35% smaller, and its thickness is reduced from 1 mm to 0.63 mm. Intensive simulations were conducted to mount the circuits on an eight-layered board.
The size of the printed circuit board is approximately 35% smaller, and its thickness is reduced from 1 mm to 0.63 mm. Intensive simulations were conducted to mount the circuits on an eight-layered board.
[Click to enlarge image]
The chassis using Mg alloy: The thickness of the chassis board is reduced from 0.5 mm to 0.45 mm. Since the portion above the DVD is flat, it is designed to be thicker for enhanced hardness. On the other hand, the portion above the printed circuit board is made lighter while maintaining its hardness with a provision of ribs.
The chassis using Mg alloy: The thickness of the chassis board is reduced from 0.5 mm to 0.45 mm. Since the portion above the DVD is flat, it is designed to be thicker for enhanced hardness. On the other hand, the portion above the printed circuit board is made lighter while maintaining its hardness with a provision of ribs.
[Click to enlarge image]