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🚗 | Transcend "DrivePro 20", a drive recorder for motorcycles, is on sale ... Abe Shokai

Photo Transcend DrivePro 20

Transcend "DrivePro 20", a drive recorder for motorcycles, is released ... Abe Shokai

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With the dedicated app and Wi-Fi function, you can live stream the video being recorded on your mobile device.

Abe Shokai has started handling the drive recorder "DrivePro 20" for motorcycles made by Transcend, Taiwan ... → Continue reading


Wikipedia related words

If there is no explanation, there is no corresponding item on Wikipedia.

Mobile device

Mobile device(Keikiiki) can be carried and usedmachineIs the general term for.モ バ イ ル 端末,Portable device,NomadicmachineAlso say.


Typical portable devices are portable and availablecommunicationmachine(Mobile communication equipmentTerminal) AndInformation equipment(Mobile information devices/terminals) Is mentioned. Depending on the type, information terminal,Information appliances,Digital home appliancesBelongs to the category of.

Communication function

In the old days, represented by early mobile phonesVoice callWas only a communication function (analog or digital) forE-mail,webEtc.インターネットIn addition to mobile phone networks (3G, LTE, etc.) in today's "portable computer" (next section)Wi-Fi,Bluetooth,NFCIt has a communication function such as, and can be connected to other devices.

Portable computer

Can be "portable"ComputerAs a specific example ofPortable computer (narrow sense),Laptop,laptop,Tablet pc,Handheld,Tablet,PDA,SmartphoneAnd so on. These are one field of portable information devices.

"Mobile" concept, etc.

"Portable" in "Mobile"British) Is derived fromFrench OfporterThis is because you can wear it, you can carry it, and you carry it.

"Mobile"conceptThe term "handheld" or "wearable (wearable on the body)" may be included in the term. As an examplePortable transceiverIs often held by hand when used and worn on the body when not in use. Also,Mobile phone[Annotation 1]The terminal isBelt,pocketIt can also be attached to or inserted into.

PortabletransceiverIt is,hands freeSome items became available and became "wearable" when used. Mobile phone terminals are also for hands-freeEarphonesMicrophoneIs the same if is used.

A "portable" computer[Annotation 2]Like a handheld transceiver, hold it in your hand when you use it and wear it on your body when you're not using it. However, in the futureHead up displayIt will be "wearable" when used.

As a reference,Amateur radioな どwirelessIn the field of, there are the following classifications.

In Japan, mobile phones are often used.[Annotation 1]A terminal is sometimes simply called a mobile phone or a mobile phone.

"Mobile" and autonomous mobile devices

The concept of “mobile” described above is a concept centered on humans, that is, the mobile device itself does not include a moving function, and the power of humans (or animals) or humans is required for the device to move. It is necessary to rely on mobile machinery to operate or control. On the other hand, by directly connecting the mobile device to the mobile machine, the mobile device also acquires the mobile function, and a computer that moves autonomously can be completed. As a typical example of today's familiar mobile machines used for such autonomous mobile computers, various mobileMech robot,Drone,Self-driving carAnd so on.[1]


Here, the devices that can be classified as mobile devices are listed.

Although it was not a portable device at the beginning of its popularization, technological advances (Downsizing) Caused a portable device to come out (eg a clock,Fixed-line phone→Mobile phoneTerminal,main frame→laptop), there are some things that are becoming portable (eg radio, calculator).


Electrical equipment (not electronic equipment)

Equipment that does not use electricity

Functional element

Here, mobile devices, especially mobile phones[Annotation 1]Enumerate the functional elements of.

Related to mobile communication

In the field of mobile communication devices and mobile information devices,Mobile communicationWith the development of, it has shown great progress to date. This aspect is the so-called "Ubiquitous computing'[Annotation 5]Can be bundled as the concept of.

In the 1990s, most mobile devices were mostly monofunctional (eg analog mobile phones, notebook PCs, communication cards, etc.)

Since the 2000s, equipment downsizing and mobile communications have continued to evolve (to date). Mobile phones began to take on the character of a digital tool (Japanese “mobile phone”),feature phone(So-calledGalapagos cell phone) Reaches the peak of concentration. "Keitai International Forum"Mobile communicationrelatedexhibition [1]Already, "Mobile phones, PHS,PDA,car navigationThe Japanese concept of "mobile phone" was advocated as a "generic term for mobile communication devices and services such as." With mobile devicesIts functional elementsThe fusion with

Since the XNUM X'sSmartphoneIs being replaced byIoT,big data,FintechThe social aspects are beginning to spread.

New concept and cultural aspect

Since mobile phones have become widespread in Japan,Youth cultureIt has become established, and the famous young people are saying that they are only playing with mobile phones these days.Stereotype(Especially by older people who are not young) continue to take hold. Many young people spend most of their free time a day accessing e-mail and web access via mobile phones.

Fashiontool DesignMobile phone, dress-up, surface processing (leathertaste,Relief(Patterns, etc.) is a concept that arose during the evolution from "mobile phones" to "mobile phones."

Wall of power consumption

Mobile devices (portable information devices, mobile communication terminals) are increasing in power consumption and required secondary battery capacity (Ah, amp・Hour) is continuously increasing.

On the other hand, it is almost essential for mobile devices that require a power source.Secondary batteryThe degree of improvement in the efficiency of the battery capacity of the (storage battery) does not catch up with the above-mentioned tendency of increase in power consumption. The technological innovation in the secondary battery field is somewhat slower than the technological innovation of information processing and mobile communication.[Annotation 6].

Therefore, although there are technical feasibility, there are restrictions on power consumption and size of mobile devices.[Annotation 7]Therefore, there are restrictions such as limited functions/performances (compared to fixed devices) in implemented mobile devices, and the inability to adopt functions.

注 釈

  1. ^ a b c d e In this item,feature phone,PHS,SmartphoneAnd the like.
  2. ^ (Laptop,laptop,Tablet pc,Handheld,Tablet,PDA,Smartphoneetc. In the futureWearable computer)
  3. ^ “Fixed” means “fixed”.
  4. ^ portableDVD player,portableBD playeretc.
  5. ^ In "ubiquitous computing" itself,Mark Weiser,Ken SakamuraThere are multiple advocates, and there are differences in the concept of “Palo Alto” ​​or “Japanese”.
  6. ^ (Rather, it can be said that the speed of innovation in the information and communication fields is too fast.)
  7. ^ Larger capacity batteries require larger volumes. In addition, the market for devices such as mobile phones that a person holds and uses continues to be light, thin, short and small.


  1. ^ Poslad, Stefan (2009). Ubiquitous Computing Smart Devices, Smart Environments and Smart Interaction. Wiley. ISBN 978-0-470-03560-3. http://www.eecs.qmul.ac.uk/people/stefan/ubicom/index.html .

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