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Electronics August 29 2005 Issue
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Nikkei Electronics |
August 29 2005
Issue
Keyword . . . p. 10
Shannon Limit
What’s New . . . p. 34
- Spreading Wave of Organic Memories—Replacing the Capacitor
with Molecules
- Toshiba and IBM Talk about “Cell” at Hot
Chips Symposium
- Fujitsu Laboratories Develops Image Correction
Technology for Mobile Videophones
- Hitachi Downsizes Its Autonomous
Flying Objects Using Parts for Mobile Phones
- Toyota Begins
Application of Code Generators in Earnest
- Matsushita
Electric Industrial Files a Patent Infringement
Suit against MediaTek
Leading Trends
Application of the Small-sized Module Technology “LTCC” Goes
beyond the RF Part of Mobile Phones . . . p.
51
Low Temperature Co-fired Ceramic (LTCC) module technology for embedding components,
such as resistors and capacitors, in a multilayer substrate consisting of several
tens of ceramic substrate layers only tens of micrometers thick.
Until
now principally applied to mobile phone RF circuits, LTCC technology is widening
it scope, ready to take on wireless LAN, tuners for digital terrestrial broadcasting
and even digital circuit boards.
Apple Shock: What Will Become of the Music Distribution Market?. . . p.
61
On August 4, 2005, Apple Computer, Inc. of the United States launched its long-awaited
“iTunes Music Store” (iTMS) music distribution service in Japan.
The
service instantly changed the face of the Japanese distribution market.
Cover Story
A Blueprint Emerges for Next Generation Mobile Phones to
Realize 1 Gbps . . . p. 83
Raise the data transmission speed per hertz right up to 4bps from 0.7-0.8
bps in order to realize a maximum wireless communication speed of 1Gbps—deliberations
aimed at solidifying concepts for fourth generation (4G) mobile phones and
other next-generation mobile devices have started to progress. All of
the latest transmission technologies, including multiple-input multiple-output
(MIMO) technology, will need to be drawn upon to help overcome the “Shannon
Limit.”
A flood of new ideas is tackling the issue of data processing
by such restricted hardware as mobile devices.
(Title)
Five Questions on Next-generation Mobile Phones . . . p.
84
(Part 1)
Wireless Standards. . . p.
86
Two Hurdles to Overcome—Utilizing Space for Greater Efficiency
Two targets have been set for next-generation mobile communication. One
is to improve frequency utilization efficiency. Efficient utilization
of space would add an extra digit to the bitrate. The other is to
reduce delay time. A one digit reduction could open up new application
possibilities.
Many technologies relate to fields other than mobile
communication, meaning that manufacturers eyeing next-generation devices
have the opportunity to augment their store of technologies.
(Part 2)
Signal Processing. . . . p.
92
4G Elemental Technologies Must Cut the Volume of Operations
Achieving
the 4G target of 1Gbps, or 100Mbps when moving at high speeds, will require
considerable advances in signal processing technologies. The
dilemma until now has been the explosive jump in the volume of operations
that has accompanied improvements in processing performance. Only
recently has there been a stream of breakthroughs that are gradually diminishing
the problem.
As 4G-related research and development drive on these
technological advancements, next-generation signal processing technologies
are beginning to form.
(Part 3)
RF Circuitry. . . . p.
98
Changing Power Amps—Exploiting Circuit and Device Technologies
In
addition to a review of communication methods, next-generation mobile
communications based on orthogonal frequency-division multiplexing (OFDM)
and multiple-input multiple output (MIMO) technology will require further
development of RF circuit technology. This is because power consumed
by an RF circuit increases when data transmission speeds are quickened
using OFDM. OFDM is installed in wireless LAN applications and has
performed well as a wireless communication technology.
Application
in mobile communications, however, is far more complicated. Power
consumption by power amplifiers is of particular concern. Efforts
will need to go into circuit technologies, such as distortion compensation,
and signal processing technologies if power added efficiency is to be
improved.
Interview
Cannon’s Deputy Senior General Manager of Environment Management
and Engineering Center, Kiyoto Furuta: “No Longer a Backseat Player—Environment
Is the Key for Competitiveness” . . . p.
105
Tech Tale
STAR WARS the Digital Cinema Revolution (Part 2): “‘Thank
You’, George Said” . . . p.
108
Guest Paper
Taking off from the “Three Primary Colors” Conception for
Better Color Reproduction—Developing an LCD Monitor with 6 Primary
Colors. . . p. 113
Mitsubishi Electric Corp. has developed the industry’s first liquid-crystal
monitor that uses light-emitting diodes (LEDs) of six primary colors for its
backlight source. Research and development activities aimed at widening
the color reproduction range of liquid-crystal panels are becoming increasingly
active recently as industry players look to carve out new display markets.
In
particular, many are now employing LEDs as the backlight source, instead of previously-used
cold cathode fluorescent lamps (CCFLs), to enhance the purity of RGB colors. In
terms of broadening the color reproduction range, however, enhancing the purity
of the three primary colors—red, green and blue—alone has its limits. Mitsubishi
Electric therefore sought to expand its reproduction range further by adding
extra, non-RGB “primary” colors to the color range.
The company’s
engineers explain their techniques in designing the backlights and signal processing
as part of liquid-crystal monitor development.
NETs Buyers’ Guide
Oscilloscopes. . . p.
122
In this edition, we look at real-time oscilloscopes, which make up the greater
part of the oscilloscope market. A large share of real-time oscilloscopes,
in terms of both value and units sold, is accounted for by mid-range products
able to measure bandwidths of several hundreds of MHz up to 2GHz.
This
particular product category is going through a period of change. Whereas
500MHz oscilloscopes used to dominate, inquiries for 1GHz products have recently
been on the rise. And now in 2005, companies like Agilent Technologies,
Inc, Iwatsu Test Instruments Corp. and Yokogawa Electric Corp. are steadily feeding
new products on to the market. Most new products boast an abundance of
analytical functions and there has been a tendency to expand memory length to
accompany those functional enhancements.
This article makes performance
comparisons between the companies’ instruments, in particular products
with a 1GHz measurement bandwidth.
NETs Seminar
Method for Practically Formatting LDPC Code (2nd) . . . p.
127
The second installment on low density parity check (LDPC) codes explains in detail
the basic principles and procedures for applying the sum-product algorithm, which
is used as a decoding method.
This algorithm requires little calculation
and can also be easily implemented in parallel, making it an ideal decoding method
for high-speed processing.
An LCD Technology Named “AFFS” from Korea (1st) . . . p.
133
Rather than looking to expand the scale of production, South Korea’s BOE
HYDIS Technology Co., Ltd. attaches more importance to improving image quality
with its proprietary technologies.
The company holds only around a 3% worldwide
share of products for both notebook computers and mobile phones, but in terms
of panel performance it is a world leader.
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| Keyword: |
10 |
| News Ranking |
12 |
| What's New: |
34 |
| Selected Shorts: |
44 |
| Leading Trends: |
51 |
| Cover Story: |
83 |
| Interview: |
105 |
| Tech Tale: |
108 |
| Guest Paper: |
113 |
| NETs: |
122 |
| Calendar: |
196 |
| From the Readers: |
200 |
| From the Editors: |
201 |
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