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As a result of patents filed a few weeks ago, we knew that Samsung was working on a screen-based fingerprint scanner using ultrasound technology. This technology is much more accurate than the optical fingerprint reader currently in use. Although we are not aware of its launch and deployment. Samsung has meanwhile filed a patent application to convert all the screen of a smartphone into an all-screen fingerprint reader. It's like a built-in fingerprint sensor, but it's spread across the real estate.
It is no secret that the physical fingerprint reader mounted on the back or the front button is small. The same goes for the integrated fingerprint readers that manufacturers have been offering for months. But these drives are limited to a small fixed place while the patent filed by Samsung solves the problem by converting the entire screen into a built-in fingerprint reader. This would allow the user to press anywhere on the screen to unlock the phone.
In its patented 38-page PDF, Samsung has explained the technology using many numbers to illustrate how it works. The smartphone will have two SoCs where the low-power processor will run in the background when the master SoC is idle. The low power SoC will perform the unlock function between the ignition of the main chipset.
When a user places his finger on the screen, the reader scans it three times, which takes about 20 to 30 ms each time. Then, the screen turns on between each scan to accurately capture the peaks and fingerprints on the fingerprint, each 200ms talking talk, where the system can turn on the brightness of the display from 200 nits to 600 nits and even 1,000 nits when needed. the procedure is 700ms.
Samsung could sell the all-display fingerprint scanner to other brands as the numbers show a slotted phone, which is something that Samsung has quietly shunned after almost all OEMs adopted the device. iPhone X-like. This would be a great way to unlock a phone by placing a finger anywhere on the screen, but we will probably have to wait a few months before it materializes, but there is no has not yet a guaranteed calendar for its deployment.
Source | Via
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