3215 results about "Fingerprint image" patented technology

A biometric secured system grants a user access to a host system by classifying a fingerprint used to verify or authorize the user to the system as real or fake. The classification is based on a probability that fingerprint image data corresponds to characteristics that reliably identify the finger as real. The system includes a fingerprint sensor for capturing fingerprint image data coupled to a spoof detection module. In one embodiment, the spoof detection module is programmed to determine spoof probability based on a combination of metrics that include, among other metrics, pixel gray level average and the variance of pixels corresponding to a fingerprint ridge, pixel gray level average and the variance of pixels corresponding to a fingerprint valley, density of sweat pores, and density of sweat streaks, to name a few metrics.

A fingerprint sensing system includes an image sensor, a rate sensor and a sensor circuit. The image sensor includes a linear array of capacitive sensors for capacitive sensing of ridge peaks and ridge valleys of a fingerprint on a swiped finger. The rate sensor senses the speed of the finger as it is swiped across the image sensor. The sensor circuit supplies image drive signals to the image sensor and detects image signals in response to the drive signals. The sensor circuit supplies rate drive signals to the rate sensor and detects rate signals in response to the rate drive signals. The sensor circuit further coordinates the image signals and the rate signals to provide a fingerprint image. The image sensor may be configured as an image pickup plate and multiple image drive plates formed on a substrate, such as a flexible printed circuit board or other flexible substrate which may conform to the shape of the finger.

A fingerprint-sensing device with a sensor array that does not use active switching elements is fabricated on a base. Sensor support integrated circuits, which contain processing and addressing circuitry, are separately fabricated and subsequently mounted on the base, establishing electrical connections with an interconnect structure within the base, and are thus not integrated with the sensor array. The sensor support integrated circuits can be covered by a bezel structure and the sensor array by a covering material. In addition, a connection cable can be provided to connect the sensor array and the sensor support integrated circuits with a power source and to other external devices and to convey signals generated by the sensor array to the external devices.

The invention discloses a fingerprint identification method, a fingerprint template updating method, a fingerprint template updating device and a mobile terminal. The method comprises the following steps: acquiring a fingerprint image input by a user; comparing the fingerprint image with N fingerprint templates in a pre-stored fingerprint template group, and making a mobile terminal execute a corresponding target operation and further judging whether the matching value between the fingerprint image and the ith fingerprint template in the pre-stored fingerprint template group is greater than a second preset threshold if the matching value between the fingerprint image and the ith fingerprint template in the pre-stored fingerprint template group is greater than a first preset threshold, wherein the second preset threshold is greater than the first preset threshold; and generating a new fingerprint template according to the fingerprint image and adding the new fingerprint template to the fingerprint template group if the matching value is greater than the second preset threshold. According to the fingerprint identification method provided by the embodiment, the fingerprint templates are no longer fixed, and the fingerprint templates in the fingerprint template group are constantly improved and supplemented according to the fingerprint image used by the user in the subsequent using process.