Thursday, June 14, 2018

Last year, VR market is still dominated by hardware, and future AR will surpass VR

The data analysis company Super Data recently released the 2017 VR market report. This report shows that last year the global VR market was still dominated by hardware, with hardware sales accounting for 75%. Spuer Data expects XR market hardware and software revenues to reach $760 million in 2018, driven by AR/MR development and successful games. The development of smart phones will allow AR/MR to lead 360 VR by 2021.

data

In terms of software, games account for 55% of VR consumer software revenue. HTC Vive and PSVR have higher player viscosities, and mobile VR is even more dominant in number, but profits account for only 15% of VR game revenue. Bethesda's two games, "Radiation 4" and "The Elder Scrolls 5: Skyrim" won the 2017 PC VR and PSVR earnings list championships respectively. Nearly half of VR users are enterprise users, including some schools and hospitals, but their spending power is not very good.

The report also believes that mobile AR will become the main driver of revenue by 2021, about twice the revenue of VR/MR head-display software. In the short term, high-end VR headsets will still affect their popularity among consumers due to the relatively high selling prices.

Thursday, May 10, 2018

Wattco Energy Limited

Wattco
A high advanced technological power supplies company. 

Surpassing Din Rail Power Supply group with experienced engineers in sophisticate design solutions with outstanding topologies, construction, cost consideration for the industrial. Latest and continually up grade in design concepts towards up to date technologies. 

Over thirty years in the field, the teams are from multi – international top ranking organization. 

We serve in the areas of telecommunications, automation, building, construction, recycle energy and industrial equipment etc.,
Product reliability and high quality is our task, energy saving and environment protection is our policy.

Tuesday, April 17, 2018

Jin Shengyang Introduces 120W Ultrathin High Efficiency AC-DC Rail Power Supply

35mm Din Rail Switching Mode

Full load efficiency up to 92%, power factor up to 0.98

Full range 85 to 264 VAC (120 to 370 VDC) input

Meet UL60950, EN60950 certification 180W peak output for 3 seconds

Operating temperature: -25~70°C Input undervoltage protection, output short circuit, overcurrent, overvoltage, overload protection, remote control function


Product introduction

Following the introduction of LI24 (24W) and LI72 (72W) DIN rail-encapsulated products, Jin Shengyang has extended its power to introduce a new ultra-thin AC-DC rail power supply LI120. The DIN rail mounting width of 35mm saves valuable Installation space. LI120 accepts 85~264VAC full range voltage input, can withstand 180W peak output for 3 seconds, effectively protect backend load and line.

The LI120 adopts the latest high-efficiency circuit scheme designed by Jin Shengyang. It has a built-in power factor corrector (PFC) with a maximum efficiency of 92% and a standby power consumption as low as 0.75W. It complies with the global theme of “green, energy saving, and environmental protection”. This rail power supply uses multiple protection designs to handle output overvoltage, overload, and continuous short circuits. In terms of regulatory certification, UL60950 and EN60950 are available, which can be widely applied to distributed power systems in industrial control, power, marine, and rail traffic lights as bus power supplies for power supply and control cabinets.

Friday, March 2, 2018

比特幣的算力都用來幹什麼了 真相可能有點殘酷

第1頁:首先要搞清楚為什麼要有比特幣
  幾乎每一個接觸比特幣的朋友,都會有這樣一個疑問:挖比特幣用的算力到底都用來幹什麼了?即使是專業的“礦工”,也很難回答這個問題。甚至有人說挖比特幣的算力用到了科研上了,比如尋找下一個“地球”、解密DNA等。對於不懂比特幣的人而言,這樣的解釋似乎也有些道理。但事實並不是這樣。

  要想解決這個問題,需要對比特幣有一定了解。筆者推薦大家看中本聰的論文《比特幣:一種點對點的電子現金系統》,這是比特幣的源頭。論文涉及到為什麼需要比特幣、比特幣如何產生等知識。也正是這篇論文,能夠解答“挖比特幣用的算力到底都用來幹什麼”這個問題。

  要想回答這個問題,我們需要從為什麼要有比特幣開始說。為了避免讀者覺得麻煩,筆者將答案公佈於此:其實這個問題的答案並不是眾人想像的“服務社會、服務科學”,而是服務比特幣網絡,保證比特幣網絡的安全。

  比特幣的目的是要去掉交易中的中間環節,而這個中間環節就是金融機構。為了達到這個目的,比特幣需要建立一套證明體系。為什麼呢?舉個例子,A借錢給B,中間過程需要簽字條、公證等其他證明方式,證明A確實把錢借給了B。如果沒有證明,B可以矢口否認,A只能認栽。在傳統的交易過程中,金融機構起到了證明的作用。為什麼是金融機構,因為他有公信力,以信用作背書。

比特幣網絡算力變化趨勢

  那麼比特幣怎麼證明A把錢借給了B呢?比特幣的思路是,把這個消息記在賬本上,然後全人類都能看到這個賬本,這樣所有的人都知道A把錢借給了B,借了多少,什麼時候借的,這樣B就無法矢口否認這個事實了。

  把一個交易信息讓所有人都知道,這就是比特幣的證明體系。但又出現了一個問題,這個問題就是“雙重支付”。

第2頁:算力是為了維護比特幣網絡的安全

  在解釋之前需要說明一下,在比特幣網絡裡,你有多少錢,不是你說了算,而是大家說了算,每個人都是公證人。

  雙重支付就是一筆錢花了兩次,這種情況在紙幣上是不可能發生的,但由於比特幣並不是實物,只是“記賬本”,中間沒有實質物質進行交換,所以可以發生。繼續舉例子:A用1000買了B的一個東西,B記在一個賬本上;同時A用相同的1000買了C的東西,C記在一個賬本上。這時候B睡覺了,而C把剛才記的帳拿給大家看,B睡醒了才拿給大家看。

  在B和C發貨之前,這1000是屬於B的還是屬於C的?為了解決這個問題,比特幣網絡讓交易不可逆,也就是不能退款。不可逆的特點讓A的這兩個1000交易只被承認一個。

  首先,比特幣將所有的交易通過隨機散列加上時間戳,讓交易有先後順序,然後交易融入到基於隨機散列的工作量證明所形成的鏈條中,這樣形成的交易就無法更改。翻譯成人話就是:B和C的賬本拿給大家看之後,還會有人繼續在這個賬本上記賬。假如後面記賬的大部分人都選擇在B的賬本上記賬,那麼大家就會把B的賬本視為正確的,而B的賬本上記著A用1000買了B的東西,這樣A的1000就屬於B,C記的就不被承認了,B發貨給A就可以了。


基於隨機散列的工作量證明的鏈條

  在這個過程中就需要算力,算力是為了保證區塊的信息不可更改。怎麼實現的呢?工作量證明基於隨機散列,然後形成鏈條。這個鏈條有個特點,你想開頭的話,就需要求解,求解就需要算力。而且這個求解的難度是呈現指數級增長的。只要你先求出這個解,你就獲得比特幣獎勵。

  但如果你想修改已經出現的區塊,那就必須選擇鏈條最長的那個,然後從頭開始求解。這樣你修改的鏈條才會被認為是正確的(最長的鏈條視為正確的鏈條,不理解的話可以聯繫前面提到的B的賬本)。但這個最長的鏈條上有著全網下最大的工作量,全部求解的話需要耗費巨大的算力。

  而這樣做是得不償失的,因為你耗費這麼多算力去修改得到的結果,不如你拿這些算力去求解的收益高。這樣就保證了不會有人去更改之前區塊的信息,區塊的信息自然就實現不可更改了。這個“不可更改”是可以更改的,只是沒有人傻到會這麼做而已。

  也就是說,挖比特幣的算力實質上是一直在求解,這樣就能保證最長的鏈條擁有全網最大的工作量,從而不會被更改。這樣也就實現了比特幣系統是堅固的,是不會被人攻擊的。


第3頁:這種做法是否有意義

  那麼這樣做有意義嗎?

  我們先看這些算力。目前比特幣的全網算力是非常高的,據說已經比全球前100名超算的算力總和都要強。這個觀點有一定的誤導性,比特幣全網的算力只要是求一個算法,即SHA256算法的HASH值,這是比特幣網絡的工作量證明機制的要求。也就是說,比特幣全網在求解SHA256算法的HASH值的算力上是非常強大。

  那讓比特幣網絡的算力去求解其他的算法呢?整個比特幣網絡的算力可能還沒有你手上電腦的運算效率高。這是因為,比特幣網絡的算力太過於專業了,只是求解SHA256算法的HASH值,它做不了其他工作。這也是為什麼,即使你用GTX1080Ti去挖礦,也不如游戲性能更差的挖礦機的快。

比特幣是不是貨幣這個問題的答案很重要

  而且你就算用比特幣網絡的算力去挖基於其他算法的幣,效率也非常低下。

  也就是說,比特幣網絡的算力是否有價值,最終還要看大家承不承認比特幣是不是貨幣。如果大家承認比特幣,那麼比特幣網絡將是全世界最安全的金融系統。從這個角度來看,比特幣網絡的算力實在是太有價值了!

  如果比特幣沒有被公認為貨幣的話,那麼比特幣網絡算力的價值非常小,小到微乎其微,比特幣的價格完全是被炒上去的,充滿了泡沫。

  以上兩個結論都是在比特幣被定性之後所得出來的,當下比特幣到底是不是貨幣還無法定性。但目前比特幣並沒有成為公認的貨幣,所以現在看來,比特幣網絡算力的最大價值就是,能挖出比特幣賣錢,這樣的比特幣更像是商品。

  最後回答一下剛開始的問題,比特幣的算力都用來幹什麼了?往大的說是維護比特幣網絡的安全,往小的說就是在算數;耗費這麼多人力物力實現的算力有意義嗎?不好說;那為什麼還有那麼多人在挖礦?因為能賺錢啊!

Wednesday, August 23, 2017

Solutions to Recover Deleted Photos on Samsung Galaxy S5

Listen to the Galaxy S8 / S8 Plus, Note 5/4/3/2, Galaxy A9 / A8 / A7 / A5, Galaxy J, Galaxy Nexus important pictures or galleries or Galaxy Ace? After the Samsung Galaxy smartphone takes root, lose some important stuff like funny videos or photos? Completely reset or format your Android phone error, lost Samsung data?


Well, like all other devices, it is easy to delete photos on the Galaxy S5, incorrect actions may delete photos, there are other reasons, such as system errors, memory card crashes, etc., can also delete photos. Fortunately, no matter how the photo was deleted, as long as it is not covered by the new file can be restored. So, once you realize that your precious photos are deleted, stop using your device and find a viable tool to recover lost photos from Galaxy S5.


Step 1. Connect Your Android Phone
Launch dr.fone toolkit for Android on your computer, and select Data Recovery among all the toolkits.
drfone toolkit for android
Connect your Android phone to the computer using a USB cable. Please make sure you have enabled USB debugging on your Android phone.
drfone toolkit for android
If your Android os version is 4.2.2 or above, there will be a pop up message on your Android phone, tap on OK to allow USB debugging.
drfone toolkit for android
Step 2. Select file types to scan
After the phone is connected successfully, dr.fone for Android will display all the data types it supports to recover. By default, it has checked all the file types. You can just select the type of data that you'd like to recover. And then click "Next" to continue the data recovery process.
drfone toolkit for android
Step 3. Scan your device to find the lost data on it
There are two scanning modes. You can read the description and choose the "Standard Mode" or the "Advanced Mode" here to continue according to your need. We recommend you to try "Standard Mode" first, which works faster. If it doesn't find the files you are looking for, you can then try "Advanced Mode".
Now, click "Start" to begin analyzing and scanning your device.
drfone toolkit for android
Now, dr.fone toolkit for Android is scanning your Android phone to recover deleted data. This process will take a few minutes. Just be patient. Precious things are always worth waiting for.
drfone toolkit for android
Note: There might be a Superuser authorization appearing on your device during the scan. If you get it, click "Allow" to continue. If not, just skip this step.
Step 4. Preview and recover deleted data on Android devices
When the scan is complete, you can preview the found data one by one. Check the items you want and click "Recover" to save them all on your computer.
drfone toolkit for android

Monday, July 10, 2017

Best Way to Recover Lost SMS from Android Device

If you accidentally deleted all the text messages, or even just an important message - you need to act quickly. Lost mail is recoverable, but only through the application updates, file downloads or other similar files, to save its memory part of the cover. So grab your phone and computer and learn how to recover deleted messages android.

When trying the software, it works fine and does not need to read and lengthy instructions or do any strange solution I like. The design is very good and the steps are clear. You first download and install the software and select the service you want. In this case, I used the Renew Android data recovery tool to recover my deleted messages.

After connecting my phone, it prompts me to allow USB debugging, which can be done in the developer settings (activate this, click on the internal number seven times). You can then grant the software access to the phone content. (In some cases, it will temporarily root your phone, fortunately, it will not invalidate your warranty. Your phone is irrelevant after the process.)

After about 5 minutes to retrieve data from the phone. If you have a large amount of deleted data, it may take longer. You can also choose to retrieve all content from your phone, which will take longer. In my case, time is not a problem.

After that, it gives me a good overview, not only my SMS, but also contacts, pictures, videos, etc., all of which can be restored and saved to your computer or your chosen location. Recovery also took a little time.

I absolutely recommend recovering the recovery software because we are just facing it, most of us from time to time to delete things. And, i can say that my software experience is very positive, it's a good choice.

Thursday, July 6, 2017

ONE Click to Root Android 5.1.1 with Android Root

In this article, we'll show you how to root your Samsung Galaxy on Android 5.1.1 Lollipop. Rooted an Android phone has become so simple and simple process with Android root, you can root your Samsung Galaxy just click on it. Phonetic PhDs provide you with the quickest and most convenient way to root your Android. Phone blog - Android Root has more than 7,000 devices, 100% safe and reliable. We are now learning how to use Android Root to generate Galaxy steps:

Step 1. Launch Dr Phone
First of all, we have to download install and launch Dr Phone on our computer. Next, we need to click on ‘More Tools’ from the left column and select ‘Android Root’ from the toolkits. 
Step 2. Connect Phone to Computer
Now we have to connect our phone to the computer using a USB cable. We should have enabled the USB Debugging mode on our phone. The phone will be automatically detected and connected. 
Step 3. Root Android Phone 
Once the phone is detected, there we get an option to root the phone. What we need to do now is to click on the root option.  
During the rooting process, the phone will pop up a message to ask whether you would like to root the phone. Tap on Confirm to continue the rooting. Just in a few minutes, your phone will be rooted successfully