40 results about "Fingers skin" patented technology

A method using optical coherence tomography to capture the microvascular network of the superficial layer of the finger skin for the purpose of fingerprint authentication and liveness detection. At the dermal papilla region, the vascular pattern follows the same pattern of the fingerprint and this vascular pattern forms a live vascular fingerprint. This live vascular fingerprint provides for ultrahigh security and a unique way for fingerprint-based personal verification. Because the system is based on blood flow, which only exists in a living person, the technique is robust against spoof attaching. After performing non-contact in-vivo imaging of a human fingertip, a three dimensional vasculature image is reconstructed from a plurality of vasculature tomography images and at least one vasculature fingerprint image which corresponds to the fingertip is extracted from the three dimensional vasculature image. This extracted image may then be compared to known fingerprint database for authentication or for liveness detection.

The invention discloses a fingerprint identification display device, a manufacturing method and a driving method thereof. A plurality of photosensitive units are arranged inside the display device, and each photosensitive unit includes: a photosensitive unit for sensing changes in light intensity when a fingerprint is pressed. Diodes, and control switch transistors used to control the photodiode to convert light intensity changes into different potential outputs; the display device also has a component that emits light that can be sensed by the photodiode. When the user's finger is close to the surface of the display device, due to the uneven ridges and valleys on the skin surface of the finger, the photodiode emitted by the display device can sense the light intensity of the light irradiated on the ridges and valleys of the finger and reflected to the photodiode of the photosensitive unit Differently, the light intensity difference is converted into the current signal difference to realize the fingerprint detection. The photosensitive unit detects the fingerprint based on the photosensitive effect, which is not easy to interfere with the internal components of the display device, and it is easy to realize high-quality fingerprint detection.

The invention relates to a five-finger work glove with guaranteed space, which is characterized by comprising: cutting a thumb hole under the palm skin, forming a finger end at the upper end, and extending to the finger end so that the front index finger and the back index finger form a whole, and the side surface of the back index finger forms a whole. The palm skin that forms the suture end; the back middle finger, the back ring finger, and the back little finger form a whole, the back middle finger side forms a suture end, and the back of the palm skin is stitched with the suture end of the back index finger side; the front middle finger, front ring finger, and front little finger form a whole, The finger skin sutured to the finger end of the palm skin above; the thumb skin sutured to the thumb hole of the palm skin. This kind of five-finger work gloves, the number of fingers of the whole plate finger skin has been increased from 2 to 3, cut and sewn into various shapes, and made by moving the stitching points between the fingers on the back to ensure the extra space between the fingers and the movement of the fingers The flexibility of the machine eliminates the connection on the back, which solves the phenomenon of squatting and helps to improve work efficiency.