USB (Universal Serial Bus) PC Camera

A USB camera for video conferencing has been developed by LG Electronics Inc. Users previously required the installation of a capture card to connect the camera with a PC, but this proved a difficult job, even for experts and prevented digital cameras from becoming popular. So, an easier way of connecting digital cameras to PCs was rgently needed for this particular market to develop.

USB (Universal Serial Bus) is a new industry standard in PC architecture. It supports perfect Hot Plug-and Play, transfer rates up to 12 Mbps, and real-time data transfer for voice and video. The LG USB Camera takes advantage of these USB features so that the user doesn't need a capture card or incur additional costs. Also, users can plug or unplug it anytime.

The camera is competitively priced and offers superb performance in video conferencing or image capture, featuring a high-resolution full-color, 270,000-pixel resolution CCD and 24-bit full-color image quality. It offers real-time video capability of 30 frames per second at QCIF mode, and picture quality can be adjusted by the software. It is compatible with Windows 95, Windows 98 and Windows NT 5.0 which will be released this year.

The LG USB Camera can be used for video conferencing through the PSTN, ISDN or LAN networks, and is extremely versatile. It can capture an image for use on a post card or digital album, or send a personalized, live-video e-mail. It can also serve as a digital surveillance system in a home or office environment. Motion detection software is part of the total package to enable it to detect intruders or moving objects.

It is anticipated demand for digital cameras will grow rapidly since they are essentially ?nput devices for multimedia systems. Video conferencing as a means of communication is gaining in popularity, and mobile multimedia services will begin operation soon, providing a further boost to the digital camera market.

LG Electronics Inc.
LG Media & Communication Research Lab.,
16, Umyun-dong, Socho-ku, Seoul, Korea
Tel : 82-2-526-7342
Fax : 82-2-526-7342
E-mail: jhhwang@wm.lge.co.kr
http://www.lge.co.kr

 

High Isotactic Polypropylene

High heat resistant, high rigidity polypropylene (High Isotactic Polypropylene, or HIPP) is a novel polypropylene polymer which has greater crystallinity compared to conventional PP. Due to the high crystalline nature of the material, it has higher rigidity and heat resistance than conventional PP, a feature which extends its area of application to even the traditional domain of engineering plastics (ABS, PC) application.

Eight companies presently produce PP products in Korea, and the volume of production of Korean PP far exceeds domestic consumption, indicating strong competition between PP resin makers. Even though two-thirds of made-in-Korea PP products are exported, every PP producer feels the need to boost the overall quality of their products to survive the harsh competitive environment both overseas and at home. Several years ago, Samsung General Chemicals launched several R&D projects to raise the level of quality of its PP products, one of them being the HIPP project.

The objectives in developing HIPP were as follows:

- to replace expensive imported specialty PP products with high-quality, medium-priced products by SGC, sharing the resultant benefits with customers.
- to increase the exports of SGC products by making PP products more competitive in quality as well as in price.
- to exploit new areas of quality innovation in PP products, so to expand the application and sales windows of all SGC PP products
-to meet the increasing demand for high-quality PP in automobile materials. Many of the plastic components in Samsung Motor's maiden offering on the auto market, the SM Series, such as panels and trims, are made of SGC's HIPP-based PP compound because of its properties of rigidity and high-scratch resistance.

From the mid-1980s onward there have been intensive R&D efforts among PP producers worldwide to develop HIPP. Most R&D has been related to new catalyst development in the solvent-using PP process, the so-called slurry process. The first successful commercial HIPP product was produced in the late 1980s in Japan for automobile application. Though SGC's R&D entry into this area was a little late compared to its foreign competitors, several technological breakthroughs have been accomplished in a relatively short period in the process of the company's development of HIPP.

They include:

1. A novel catalyst which produces high isotactic and high-flow PP in cost-effective gas-process PP plants, a unique feature of SGC's proprietary technology compared to most foreign HIPP technologies which usually involve expensive slurry processes.
2. The development of rubber control technology in terms of the material's chemical and physical structures. Such technology is critical in establishing the balance in the material between rigidity and impact strength to meet the various demands of customers.
3. Excellent product performance, exceeding even the quality of slurry process-made HIPP in many applications.

SGC's HIPP products have found an increasing number of industrial applications, such as electrical and automobile components, due to its excellent properties. The material's properties and its fields of application can be categorized as follows:

- high rigidity and heat resistance (food packaging films and injection moldings)
- high barrier properties (cigarette packaging films)
- good flow properties (ease of injection molding for large part articles)
- high-scratch resistance (base resin for PP compounds for auto applications)
- high strength-to-weight ratio (down-gauging for products such as thinner films, the walled molded articles)

There has been growing demand for conventional PP material itself due to its low density, high rigidity, heat resistance and recyclability. HIPP, having higher material performance properties than conventional PP, gives further impetus to the increasingly growing field of PP application in worldwide markets.

For example, the trend in auto part plastics is that they should have increasingly higher performance levels. Such levels are defined by lower density, higher rigidity and greater scratch resistance, while simultaneously maintaining good impact strength. The simplest way to meet this kind of demand is to substitute HIPP in auto plastics manufacture.

In addition, the ever-increasing demands for material down-gauging, high processability and recyclability which is demanded of plastic in films as well as injection moldings, will further expand the area of HIPP application in near future.

Samsung General Chemicals Co., Ltd.
103-6, Munji-dong, Yousung-ku, Taejon, 305-380, Korea
Tel : 82-42-865-4250
Fax : 82-42-865-4149
http://www.sgc.samsung.co.kr
 

V-6 Delta Engine

After five years of research costing 100 billion won, Hyundai Motor Company has introduced its ?elta Engine to meet ever-stricter emission standards, and the twin consumer demands for economy and high performance. The 2.5-liter V-6 DOHC, 24-valve Delta Engine is one of the top high-performance engines in the world, featuring a natural aspiration mechanism enabling it to develop a maximum horsepower of 192 hp and torque of 25 kg-m.

A Delta Engine-loaded vehicle can achieve a speed of 100 kilometers per hour in 9.3 seconds (equipped A/T), and requires 5.5 seconds to go from 60 to 100 kilometers per hour. To develop the Delta, the Hyundai Motor Company combined high-tech combustion and light-weight aluminum cylinder block technology to give the engine the high efficiency and low fuel consumption necessary to enable using models to be competitive in overseas markets.

In particular, the use of light-weight parts such as the aluminum cylinder block and connecting rods plus optimal design through CAE (Computer Aided Engineering) made it possible to reduce engine weight compared to existing models by 20 percent (or 40 kilograms), so enhancing fuel consumption.

The engine valve angle of the Delta Engine has been reduced to 25.1 degrees from the standard 57 degrees to optimize the shape of the compact combustion chamber and intake/exhaust manifold. This technique has served to improve combustion and intake efficiency to produce high performance at both high- and mid-range speeds.

The Delta features improved NVH (Noise, Vibration, Harshness) levels through the application of new technologies such as CAE, EMA, and Sound Source Identification.

Noise emission by the cylinder block has been ameliorated by EMA and FEA which reduce radiation noise for aluminum components. The aluminum oil pan has been adapted to reduce P/T mode vibration. The lower intake manifold has been designed to reduce vibration by the cylinder block. The design of all structures identified by sound analysis as a major source of NVH have been optimized through the application EMA and FEA. Sound absorption and shielding materials have been deployed in conjunction with other parts to ensure the maximum amount of noise reduction. The engine's front auxiliary driving system has been designed to reduce mesh noise and belt resonant noise.

The Delta is the latest in Hyundai Motor Company's series of engines, which began with the Alpha (the first all-Korean developed engine), and was followed by the Beta and Epsilon. The company produced 300 prototype engines and 300 pilot cars, and undertook a full range of tests during the process of developing the Delta, a procedure which confirmed its high performance capabilities under climatic conditions of varying severity.

Hyundai Motor Company
772-1, Jangdeuk-ri, Namyang-myun, Hwasung-kun, Kyonggi-do, Korea
Tel : 82-339-369-5654
Fax : 82-339-369-5668
http://www.hyundai-motor.com

* The items featured in this article have been selected by the Korea Industrial Technology
Association (KITA) after undergoing a one-year market evaluation period.