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Toshiba announced the sale of some assets to improve financial predicament

Toshiba July 22 announced the sale of 4.6% stake held by the world's largest elevator manufacturer Kone, Finland (Kone) of approximately 860 million euros, in order to improve the financial situation.

A day earlier, Toshiba president Hisao Tanaka officially announced his resignation, the Vice Chairman Norio Sasaki and Toshiba former president and current director of consultant Nishida also resign. Toshiba is currently 16-man board, eight people resign. Toshiba 22 announced in mid-August announcement of the new list management, efforts to restore credibility as soon as possible.

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In February, Japan's financial regulator warned potential accounting irregularities Toshiba Corporation, Toshiba then appoint an independent investigation team to investigate financial problems. In early May, Toshiba said the project cost due to improper accounting practices, especially the impact of power system business, you may need to 2009-2013 fiscal year profit down 54.8 billion yen (about 440 million US dollars), but also announced the cancellation of 2014 fiscal year earnings release.

However, third-party research report released this week showed the Commission a Toshiba false profits in recent years, up to 151.8 billion yen (about 1.22 billion US dollars), far higher than the company had expected. It is reported that Toshiba will announce fiscal 2014 earnings on August 31, September 14 announced the 2015 fiscal first quarter earnings.

US study of human chip: self-healing capability and improve immunity

People imagine Wolverine has self-healing ability, therefore, US researchers came up with a new approach. Plans to use the human body system developed a tiny chip implant. The chip will not only make people more healthy, easy to get sick, it can also be used to treat mental health disorders, including post-traumatic stress disorder.

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US Defense Advanced Research Projects Agency (DARPA) has received $ 78.9 million in sponsorship money, DARPA hopes to make the body's peripheral nervous system runs the internal organs, call "force" to fight the infection and repair the damage. DARPA will create a nerve fiber thinner than an implant. After implantation, the device monitors the nervous system, organs and overall health, and to adjust the system to trigger the reaction by the electric pulse. To some degree, similar to the central nervous system has set up a pacemaker, but it can help people fight against arthritis and other inflammatory diseases.

Insiders pointed out that the ultimate goal of this project is to put the body into a "closed loop system" that constantly evaluate themselves to ensure that the disease is detected in the organs of the body can quickly deal. With a more powerful immune system, patients may need to take medicine.

Fingerprint recognition technology and the future of the field of conjecture available

Since Apple released iPhone 5s fingerprint recognition technology began to enter people's lives, then this technology is a very big impression on. In the next two years, fingerprint recognition technology began in the smart phone to the explosive growth trend, fingerprint identification has become a major selling point of the mobile phone conference. So fingerprint recognition in the end is what kind of technology?

Fingerprint identification process

A typical fingerprint identification system should include: Fingerprint Sensor + feature extraction / matching module + feature template library + applications. The fingerprint matching can be divided into two steps, the first is extracted fingerprint characteristics to be verified, then the fingerprint template library and template fingerprints similarity compared to determine whether two fingerprint images from the same finger.

Fingerprint acquisition technology

Fingerprint acquisition technology development is broadly divided into three ways: optical recognition, capacitive sensors, biological radio.

1, the optical recognition

Optical recognition is older fingerprint recognition technology. The optical transmission device based on the light reflected back to the machine onto your fingers and then to get the data, and compare the database to see if the same. Optical recognition can only reach the skin's epidermis, but can not reach the dermis, and by whether the finger clean surface greater impact.

2, the capacitive sensor

Capacitance sensor identification is the use of two capacitors mounted spaced, using fingerprint irregularities, connect or disconnect the two capacitor current when the finger over the fingerprint detection equipment to detect the fingerprint data. Capacitive sensor requirements for a clean finger is still relatively high, and the sensor surface of silicon material more easily damaged. In a technical perspective, the supply of capacitive fingerprint recognition technology for Authentec, Validity, FingerPrintCardsAB (FPC), etc., Authentec Apple bought, Validity also Synaptics acquisitions. Capacitive fingerprint sensor is now the most common technique.

3, biological RF

RF sensors emit a small amount of radio frequency signals through sensors, penetrating finger epidermis lines the inner layer to obtain access to information. This method requires less finger cleanliness. RF is a relatively new technology solutions, radio frequency is capacitively, but limited to patent issues. RF type is the future direction of development.

4, ultrasonic fingerprint recognition

Ultrasonic fingerprint recognition, Qualcomm Mobile World Congress 2015 announced a 3D fingerprint technology. Capacitive sensors with Apple and Samsung GalaxyS6 TouchID use different ultrasonic fingerprint identification using ultrasound to scan fingerprints. Capacitive pressure sensor made of a two-dimensional fingerprint image, and an ultrasound scan of the fingerprint can be more in-depth analysis, even if the finger stained with dirt surface sampling also affect the ultrasound, and even penetrate beneath the surface of the skin to identify a unique fingerprint 3D feature. If your hands are water, sweat and other circumstances, still be able to accurately identify.

Fingerprint collection methods

Regardless of the acquisition, from a user point of view on the use of two kinds of entry ways: push and sliding.

1, sliding

The finger across the sensor from the system will be able to get the entire fingerprint. When a finger is pressed down, unable to complete a one-time image capture. In the acquisition of required acquisition finger across the surface of the finger across the fingerprint collected every piece of image snapshots, these snapshots then spliced ​​to form a complete image of the fingerprint.

Sliding the advantage of low cost, ease of integration, can capture a large area of ​​the image, the application of traditional feature point arithmetic, but the disadvantage is the need for the customer to have a consistent standard action to collect images experience relatively poor, not in the previous application promotion too successful.

2, push

Finger flat on the device in order to obtain a fingerprint image. Usually in order to obtain the entire fingerprint, you must use more than the finger sensor, the whole finger while pressing on the sensor. Push the advantage of the customer experience is good, it can only be used once pressed capture images, with customers in operating practices match mobile applications without education customers. Disadvantages are: high cost, integration is difficult, once acquired image area is relatively small, there is not enough feature points required by sophisticated image comparison algorithm identified.

Obviously, the user point of view, push the simplest, most convenient, after more and more mobile devices will use push-fingerprint program.

Famous fingerprint identification solutions

Famous fingerprint recognition solutions primarily AuthenTec, Synopsys Synaptics Validity, Fingerprint Cards AB, Goodix Department of Science and Technology that several top, we focus on understanding what the Department of the top science and technology, in November last year released Meizu MX4 Pro, because before carrying the world's first Set push sapphire fingerprint chip solution and concern. As Meizu MX4Pro fingerprint identification solution provider, Shenzhen A top science and technology has thus been a lot of media and consumer attention. Top Science and Technology Department of the reason why people pay attention, because the Department of Science and Technology is a top Chinese companies, fingerprint studied completely independent intellectual property rights, make people proud.

Fingerprint recognition can be applied to future areas of conjecture

1. to replace identity cards

Because in recent years, the development of fingerprint identification technology faster and faster, a variety of fingerprint technology can be applied to mobile phones or more portable devices. In recent years, frequently stolen personal identification information, and even criminals used for a variety of criminal activities. The second-generation ID card register their personal fingerprint information, the public security organs and the community can verification of fingerprints, can quickly and accurately use permits units "witnesses identity" finds, can effectively prevent fraudulent use of identity cards, as well as counterfeit happen, altered identity cards and other criminal acts, better protect citizens' legitimate rights and interests are not infringed.

According to statistics, in 2014 the national identity card registration fingerprint market will reach 500 million to 1 billion. Biometric next three years will reach tens of billions of market size, so in the near future, biometrics will act as the "main force" of identifying information, and identity card will be replaced by fingerprint lock. We can use your fingerprint to buy / receive tickets, or to accomplish a variety of things.

2. Control Smart Home

Smart Home is the future of a general orientation of technological development, we can use mobile phones and other devices to home appliances will be turned on or off, but it also raises a question worthy of discussion: how to ensure that control security information? Criminals can steal the owner of the information, and then the owner of the house doors were open / close the lead to theft of property, serious but also endanger the lives of the owner's. The introduction of fingerprint identification, so that the owner can no longer rely on easily cracked passwords, each control home appliances need only to scan their fingerprints.

To sum up

At this stage, although some software has been applied to the fingerprint identification technology (such as Paypal, QQ, etc.), but small series that fingerprint to gimmick meaning greater than the actual practical significance, fingerprint recognition and popularity of the application is a relatively long The process must be in all areas (fingerprint recognition hardware developers, application developers) can complement each other perfectly. Xiao Bian quite looking forward to fingerprint can bring more real experience, not just unlock the phone.

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Microsoft intends to acquire AMD pass a few months ago the two sides to start negotiations

According to foreign media reports, the site reports that Microsoft intends to acquire chip maker AMD. Hardware, gaming news site Kitguru quoted a source as saying that Microsoft will acquire or AMD. Microsoft reported that several months ago had contact with AMD, but the outcome of the negotiations is not clear. Today, a number of media have been forwarded this article.

Affected by rumors of, AMD shares rose nearly 3 percent after-hours. The stock closed at $ 2.34 in regular trading hours today, down 5.26%. By the worsening Greek debt crisis, US stocks fell today appears rare.

The report said that Microsoft now has $ 95.3 billion in cash, while AMD's market value of only $ 1.81 billion, acquisition of Microsoft, and move easily.

Reported that, according to analysts' estimates, Microsoft Xbox game console when their own procurement chip, according to AMD will be making payments to about $ 100 per piece. And so far, sales of Xbox One host is about 12.6 million, which means that the amount of Microsoft's purchase of this project has been about $ 1.26 billion.

If the acquisition of AMD, Microsoft can save $ 1 billion per year on the Xbox One chip procurement. If you can develop a suitable mobile phone and tablet computer chip, the cost savings will be higher Microsoft.

The report also said that for Microsoft, AMD is not a goal to be bought. Microsoft's Xbox game console, Lumia smartphones, Surface tablet computers and other hardware products may indeed require SoC chip, but the software giant does not need to AMD's server processors or high-end graphics business. AMD certainly do not want management to the divestiture, because, Microsoft could value the business, its technology is based on servers and high-end graphics processor.

Taking into account Microsoft's game console is an important business, the company would want to ensure that technology vendors will not go bankrupt or be acquired competitors. If the Samsung acquisition of AMD, its APU built-in television, it will threaten Microsoft's video game market share.

AMD and Microsoft declined to comment on the report.

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Transmission speed laser LiFi University of Edinburgh super 100G / sec

Are you still as Wi-Fi signal and the signal is weak uneven regional distribution annoyed it? Li-Fi could be the answer. This technology uses LED-based interior lighting instead of radio waves for data transmission. But Li-Fi has been a major supporter of the vision over in LED, with laser-based lighting to achieve Li-Fi, data transmission rate or an increase of 10 times.

Li-Fi data by adjusting the LED light output is encoded. The human eye can not perceive flicker rapidly, but the receiver or mobile device on a desktop computer can read the signals can even signal the return signal transceiver room ceiling, providing two-way communication. But many of the blue LED light into white light with a phosphor coating, which also limits the data transfer rate.

The study, published in Optics Express (Optics Express), Haas and his team research shows that replacing the existing LED lamp with a laser diode can significantly improve the current situation. High energy efficiency and light, lasers transmit data rate can be 10 times faster than the LED. Do not use phosphors, laser illumination can be mixed to produce white light of different wavelengths of light. This means that each wavelength of light can be used as a separate data channel, the same waves can be two-way transmission, can greatly improve the speed of light to transmit data, the University of Edinburgh team test the nine laser diodes.

Although Li-Fi-based LED can reach 10 Gb / s data transfer rate, the upper limit of the data transfer rate can be improved Wi-fi7 Gb / s for. Laser transmission data rate can easily exceed the 100 Gb / s.

At present, this device is still very expensive, large-scale production of Edinburgh University is seeking to reduce its costs, and can apply it to the lighting market. BMW i8 headlights is based on the laser light.


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