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MID: the Mobile Internet Devices, mobile Internet devices. Intel MID concept put
forward by the world's first intel and aigo MID is the launching of a new
generation of pocket computers, using the new Intel Menlow platform, equipped with
45-nanometer Atom processor technology. Palm-sized, weighing only 320 grams, is
the world's smallest computer.
MID product of four criteria:

1, using intel Atom processor.
2, has a wireless network connection.
3, with the portable battery.
4 Dimension requirements: a. Equipment Size: less than 7.5 inches diagonal
b. Equipment Dimensions: height less than 1.02 inches (26.0mm)
c. Screen size: diagonal less than 6.0 inches (152.4mm)
aigo MID is the x86 architecture, built-in Bluetooth 2.0, WIFI, GPS navigation,
CMDA, support for 3G network access, integrated Office office, great wisdom, stock
and other business and entertainment software.
All plus full-screen touch keyboard (handwriting).
MID is a high-end customers to improve efficiency and meet the demand anytime,
anywhere access, with a comfortable, long time to enjoy the fun of the top pocket PC
computer. She also a variety of industries can improve efficiency, cost terminal
equipment, can completely replace the PDA, laptop and other devices of a variety of
industrial applications; and MID is the most comprehensive wireless data connection
of computer, so for a variety of Network Terminal application can be achieved with
MID pocket computer!
MID is short for midi, is its extension. MIDI Music Instrument Digital Interface is the
English acronym, translates to "musical instrument digital
interface", that is its true meaning is a different device for signal
transmission in the name of the interface. We are now in MIDI music production all
rely on this interface in the interface between the transmission of information is also
called MIDI information. MIDI was first applied in the electronic synthesizer - a
keyboard played with electronic instruments, due to the early electronic synthesizer
technical specifications are not uniform, different synthesizers link is difficult, in
August 1983, YAMAHA, ROLAND , KAWAI other well-known manufacturers of
electronic musical instruments jointly designated a unified musical instrument digital
interface specification, which is MIDI1.0 specifications. Since then, a variety of
electronic synthesizers and other electronic keyboard instruments have already
adopted this uniform standard, so that all types of electronic musical instruments can
link up with each other, communicate MIDI information, the formation of a true
synthesis of music performance system.
As the rapid development of multimedia computer technology, computers and
powerful digital signal processing, MIDI allows computers to process information
into a logical thing, so now many people have called the computer MIDI music music.
In fact, the use of multimedia computer not only can play, create and play MIDI
music in real time. MIDI music can even see the view into the music (sheet music or
musical notation) to print out and vice versa, can also become a wonderful music
notation. Using MIDI for this property, can be used for music education (especially to
read musical notation), let students use computers to learn musical knowledge and
creative music.
[Edit this paragraph] file properties
MIDI file is essentially the so-called computer records MIDI information, data, MID
file extension is *. mid. It is used with another computer, the sound wave files (*. wav
file) What is different? On the surface, two kinds of files can generate sound effects or
music, but their nature is completely different. Ordinary sound files (*. wav files) is
the computer directly to the analog audio signal through sampling - quantification,
without compression, and sound wave into a digital signal corresponding to the MIDI
files are not direct sound recording instrument Instead, play musical instruments
recorded various information or instructions, as with what instrument, when to press a
key, how kind of strength, etc. As for playing the sound, that is by playing audio
conversion software, or formed. Therefore, MIDI files are typically much smaller than
the sound file, a piece of music, only a dozen or dozens of K K, only about one
thousandth of sound files, easy to store and carry.
[Edit this section] Analysis
MIDI can be understood as a protocol, a standard or a technology, but do not see it as
a hardware device.
MIDI hardware is of course the media. It will start with the hardware or I start it,
MIDI is not first in the computer inside, it is a manufacturer of electronic musical
instruments of different types of electronic musical instruments to the
"exchange" and produced, as it is used in digital technology, of
course, naturally very easy to put up a relationship with the computer. So we talk
about MIDI instrument interface, there are three, MIDI OUT, MIDI IN, MIDI THRU.
These can be in your home or with a MIDI MIDI electronic keyboard musical
instrument (now all have a lot of keyboard MIDI interface) on the find. MIDI OUT is
the instrument of data (MIDI messages) to send out; MIDI IN data is received friends;
The MIDI THRU Well, the data is received, then pass on to another MIDI instrument
or device, can be said that a number of musical instruments connection interface. It
can be said, MIDI is described by MIDI instruments play the same sound into 01 010
data output can also be computer software that will be expressed in the binary audio
data into 01010 output through the sound card, or receive some 01 010 data
processing. Following on this issue to talk about.
MIDI (midi) music is a very complex thing, if it is simple, it may not wonderful was.
Employing the method, such as already used to describe people read music is beyond,
not to mention some of it into a digital signal it. However, there is then a bunch of
fools on the number of interest is that we can use the convenient tool allows you to
easily describe the complexity of the music, the Chinese were not enough to fool, I
have seen in the Chinese MIDI production software also not be regarded as a
somewhat professional-style, do not really fool-style. In fact, an idiot is not good
when you only have to master music, but also has good experience in software
development, we must understand MIDI. Closer to home, take a look at how
musicians describe the music of it. Musicians playing the piano, when he pressed keys
when sound, Panasonic's time to stop the sound keys, the sound level can
be expressed in figures, press the keys can open and send a flag to represent, of course,
vibrato, portamento, the sound intensity, the sound of what my position (which is
close to my left ear or right ear pronunciation), and so are a series of complex
information can be expressed in figures, as the specific pronunciation handled by the
source, and it can be cured in the sound card in (see how you like the sound card), this
is not the most complex place, when the sounds of several instruments at the same
time, we will have treatment methods, which a channel (Channel) concept, and in a
channel where you can use an instrument, one channel can be used in other
instruments, will play two channels simultaneously, you can hear two instruments
playing, and in a channel within the instrument can also send a few notes, very easy to
form a chord was. Usually a standard 16-channel MIDI, GM standard in the first 10
channels are set for percussion.
Early MIDI device can accept MIDI signals in addition to outside is no uniform
standard, especially in the way sound is arranged in "free-hand".
This means that you finished on Taiwan Chin Music to get another play different
types of piano will look completely different, the violin may become trumpet, flute
may become guitar, piano may become drum ... ... This is the work of professional
musicians, and will not have much impact, after all, they also make a shrub into a
finished recording thing, but the exchange between the music lovers, especially
multi-media development is extremely detrimental .
So well-known Japanese company in 1990 ROLAND develop it calls the standard GS.
GS standard products in the early ROLAND MT-32 and CM-32/64 the basis of the
provisions of the MIDI devices shall not be less than the maximum Simultaneous 24,
drum cymbals and other percussion instruments as a separate arrangement, 128
musical instruments such as a unified arrangement. In several provisions, the most
important thing is the unity of this 128 sound arrangement. With this arrangement, as
long as standard equipment in support of GS on the production of music, get any one
to support the same standard equipment on all normal playback.
Standard for GS was originally a big and good, it makes the world of electronic
musical instruments have a "full contact" opportunities.
However, perhaps because the standard really is too complicated, but may be because
many of the MIDI 设备 manufacturers do not want the formation of the dominant
world standard ROLAND situation, short last countries in the world of MIDI
equipment manufacturers did not completely accept this standard, Instead of making a
minor change, she has a GM standard.
GM standard full name should be "General MIDI standard,
first-class" (General MIDI system Level1), this standard was enacted in
1991, the GS standard based on the arrangement of the main provisions of the sound,
while the number and the drum sound of the key bits , while the GS standard sound
editing and sound important to select some removed. GM's sound basically
followed the arrangement of the standard GS is only carried out in the name of
marginal changes, such as the GS's Piano 1 Acoustic Grand Piano, etc. was
Although the GM standard, as powerful as GS, but it is after all a universal world
standard MIDI instrument arrangement, and are made because it simplifies ROLAND
GS standards, also makes more MIDI device manufacturers meet this standard can be
created the MIDI device. So just a development of GM standards, to get MIDI
manufacturers, particularly the enthusiastic response of multimedia equipment
manufacturers. Since then, various MIDI equipment manufacturers have been struck
GM's standard system, MIDI devices to achieve a deeper level than before
the exchange, for the coming multimedia era truly ready. MIDI devices for now, GM
is the most basic of standards.
Another giant YAMAHA MIDI outdone, he certainly hate to see such a low standard
required, so in September 1994 YAMAHA put forward their own audio standards -
XG. Similarly, GM XG compatible done on the basis of substantial expansion, such as
adding a "sound editing" function, so the composer can change
the MIDI music in real-time sound of musical instruments; also joined the
"sound options" function, in XG sound of each can be
superimposed several sound.
Therefore, we present the common MIDI standard by the GM, GS, XG, competition
between them will continue, of course, means that GS and XG.
[Edit this paragraph] History
The early eighties, computer music ushered in the first period of real prosperity, but
also ushered in a difficult problem, that is, the communication between various
electronic musical instruments problem: the manufacturer's specifications
are in accordance with their production of electronic instrument, when you use a
manufacturer's product alone, you also will not have any problems, but
when you also use the equipment several companies to form a computer music system,
when trouble comes, how do you make a Taiwan and USA E-MU's sound
source sent you to play in Japan ROLAND keyboard is a standard A then?
In order to solve the communication problems of electronic musical instruments, in
1982, the International Association for more than a dozen musical instruments maker
manufacturers (mainly U.S. and Japanese manufacturers) gathered together and
express their views. Sequential Circuits through the American Conference's
David. Smith's "Universal Synthesizer Interface"
program,      and     renamed     the     "Musical    Instrument     Digital
Interface,"       that    is    "Musical     Instrument     Digital
Interface" abbreviated as "MIDI", made public. 1983,
MIDI protocol version 1.0 officially enacted. Since then, all commercial electronic
musical instruments have appeared in the back of several five-hole of MIDI sockets,
instrument no longer exists between the "language barrier", they
are loaded on the same computer with MIDI interface, forming a more prosperous
computer music family.
In fact, MIDI itself is short for Musical Instrument Digital Interface, which means
Musical Instrument Digital Interface. The role of this interface technology is to enable
electronic instruments and electronic musical instruments, electronic instruments and
computer communication between the adoption of a common communication
protocol, this protocol is the nature of the MIDI protocol.
For people who engage in the computer, may wish to MIDI understood as a local area
network, the various parts of the network through a dedicated serial cable (MIDI cable)
connection, and to 31.25 KBPS speed transmission with digital music information.
MIDI standards, they began only in the computer's round of lobbying in
the professional attention, but with the constant development of electronic technology,
especially in recent years the rapid progress of multimedia technology, MIDI as
multimedia is an important part of get fired uproar, almost reached the point of
including women and children. But we all have to this interface technology as a
synonym for computer music, often "do MIDI",
"play MIDI" argument, so that some orthodox
"computer music" and wonder, tears and laughter.
Accordingly, we may wish to MIDI classified as "narrow MIDI"
and "General MIDI" two concepts mentioned above narrow
MIDI is Musical Instrument Digital Interface, and MIDI is we have generalized a
conventional term for the whole computer music, so that that the concept will not
cause further confusion, it will not allow MIDI to lose its essence the meaning of the
November 1985, the International Instrument Manufacturers Association announced
the "MIDI 1.0 version of the details of the provision" (version
2.0 is still under development), re-defines the controller number. In addition, to ensure
the healthy development of MIDI, but also set up a "MIDI Manufacturers
Association,"           and       "Japan         MIDI         Standards
Committee" and other organizations, MIDI standard from the stage into a
mature stage of growth.
MIDI standard of maturity so that the electronic musical instrument manufacturers are
more confident, their brains to think hard to produce an unprecedented enthusiasm all
kinds of electronic musical instruments, a keyboard style (synthesizer, master
keyboard), string-type control ( MIDI guitar), Percussion-type (drum machine) and
even play style (breath control), in addition, there are a wide variety of various source
modules (that is, to no keyboard synthesizer) for candidates purchase.
[Edit this section] on the MIDI software
MIDI by Microsoft and IBM jointly developed the standard audio format for PC.
There are many types of MIDI software, there are MIDI player, playing several types
of software and creative software. Typically, most of the media player can play MIDI
music, such as WINDOWS95 media player (Windows Media Player) can play MIDI,
and often is the system's default player, such player can not use MIDI
music adjust the parameters. In addition to other media players, MIDI performance
software and creative software can be used as a MIDI player, which plays MIDI
music software, you can also choose a different source (wave form) plays way to get
the best playback, but also can change the parameters to produce a new MIDI
playback, such as changing the playback speed, change the instrument sound (such as
the piano music into a violin), down-tuning, most of the software can also display the
corresponding MIDI music scores (read music or musical notation) and even the
lyrics and other information, you can also print out the music.
[Edit this section] mobile Internet devices (Mobile Internet Device)
MID is the Mobile Internet Device (mobile Internet devices), the concept was first
proposed by the Intel.
Laptop computers and cell phones as a new product form between, MID (Mobile
Internet Device, mobile Internet devices) is aimed at those who want at any time and
any place access to the Internet consumers. Compared with the laptop, it has 4 to 6
inches sizes, consumers can place it in your pocket, even though laptop is toward
miniaturization, but 7-inch minimum size of the mobility obviously can not meet
demand; and today subject to relatively small cell phone screen and processing power,
can not provide the best Internet experience: poor performance, are not compatible,
communication instability.
Held in Beijing in 2008, the IDF, the Intel UMPC concept was extended, be extended
to UMPC / MID (Mobile Internet Devices, mobile Internet devices) two branches.
Intel is an idea full of sophisticated equipment, computing environment, including the
UMPC, MID (mobile Internet devices). Intel Ultra Mobile Asia-Pacific director, said
Huang Chengde, UMPC and MID is not the definition of hardware, specifications and
software, is to apply. He said, UMPC is a fully functional stress of small portable
computers for mobile business professionals; MID is for the average consumer.
Also, Intel and system manufacturers to set up a MID Innovation Alliance, including
Asus, BenQ, Compal, Elektrobit, HTC, Inventec and Quanta. In the past few months,
these companies have made significant progress Menlow platform, and plans to first
half of 2008 products to the market.
MID (Mobile Internet Devices), literal translation is, mobile Internet devices, Intel is
in April 2007 at the IDF Congress, a new concept, compared with the UMPC, more
emphasis on this type of product anywhere, anytime Internet access capability above
both the size and weight may be more smaller (recommended screen size from 7-inch
UMPC reduced to 4.5 to 6 inches), in calculating the number of performance can be
weakened. In addition, from the target customers of view, UMPC is more important
for professional applications, industrial users, MID products more against amateur
users, consumer users.
Consumption levels, life of the device
Run a more lightweight operating system that can quickly boot, such as Linux.
Multimedia player and mobile Internet browsing-based settings.
Around 2009 to Moorestown architecture products, is a typical MID
MID currently listed are: Patriot P8860 and the Lenovo IdeaPad U8
[Edit this paragraph] Mid function
Returns a specified number from a string of characters.
Mid (string, start, length)
String expression, from which return character. If the string contains Null, return Null.
was extracted character string part of the starting position. If you start more than the
number of characters in string, Mid returns a zero-length string
The number of characters to return. If omitted or length exceeds the number of
characters of text (including the character at the start), will return a string in a string
from the start to the end of all the characters.
To determine the number of characters in string, use the Len function.
The following examples use Mid function returns a character string starting from the
fourth of six characters:
Dim MyVar
MyVar = Mid ("VB Script is fun!", 4, 6)
MyVar value of "Script".
Note MidB function and included in the string of bytes of data used together. The
parameter is not specified the number of characters, but the number of bytes.
MID mainstream Introduction
2013 global mobile network equipment (Mobile Internet Devices, MID) shipments
will reach 50 million units, while the Linux operating system market will be
ABI that, MID market will be the first real mobile operating systems are all in the
same starting point of the platform, get rid of smart phone market in the historical
baggage, so to get most of the Linux operating system market share.
MID refers to the so-called mobile phones larger than, smaller than the mini-notebook
computers, such as notebooks, can be put into coat pocket multimedia Internet access.
According to another market research firm Forward Concepts, definitions, MID
should have high-resolution screen, the size range between 4 to 6 inches.
The current network equipment for mobile Linux operating system including design
of LiMo, Moblin and Maemo, which, LiMo is shared by six mobile communications
manufacturers established an open mobile Linux platform, which is Intel's
Moblin Linux open-source program, specializing in mobile network equipment,
Netbook, and other embedded devices, Maemo is an open community dominated by
Nokia mobile device platforms, the company's Nokia N810 Internet Tablet
on the use of the Maemo.
ABI research director Stuart Carlaw said that the support of Nokia, Maemo has
entered the mobile network equipment market, while Intel's Moblin be
driven by its close integration with the Atom to enter the market, while LiMo is also
active in the market now , compared with Microsoft Windows Mobile, Linux platform,
flexibility, customization and cost advantages of Linux are established in the
Carlaw analysis, more importantly, Linux operating system capable of providing an
integrated platform across different devices, one to cover the mobile network
equipment, smart phones and middleware single platform is very attractive indeed.
Forward Concepts also think that, Linux will be the main operating system in the field,
and estimated shipments of mobile network equipment will be from 2008 to 30.5
million units, growing to 40 million units by 2012, reaching 12 billion U.S. dollars in
revenue size.
U.S. dollars in
revenue size.