Fingerprint Cards Anacatum IP Ab

Sony Ericsson Mobile Communications Ab

Fingerprint Cards Ab

Petter Östlund

Hans Thörnblom

Martin Ek

Hans ThÖrnblom

A biometric imaging arrangement configured to acquire an image of an object comprising: an image sensor comprising a photodetector pixel array configured to detect light transmitted from the object for capturing an image, an optical filter assembly comprising at least an optical interference filter, the optical filter assembly being arranged to cover the photodetector pixel array, and the optical filter assembly having an infrared cut-off wavelength to at least partly block infrared light from reaching the photodetector pixel array, the optical filter assembly further having at least a first cut-off wavelength in the visible range of wavelengths, wherein the first cut-off wavelength depends on the angle of incidence of the received light on the optical filter assembly.

Biometric optical antispoofing based on imaging through a transmission angular dependent optical filter

A biometric imaging arrangement comprising: a photodetector pixel array including at least a first portion of pixels arranged to receive light transmitted from a spectral filter with a spectral transmission band and at least a second portion of pixels arranged to receive light not transmitted from the spectral filter, wherein the biometric imaging arrangement is configured to acquire an image of an object and perform user authentication at least partly based on, in the acquired image, a relationship between the intensity of light received by the first portion of pixels and the intensity of light received by the second portion of pixels.

Biometric optical antispoofing

The present invention relates to an optical biometric sensor () comprising: an image sensor () comprising an array () of photodetectors (), wherein for acquiring sensing signals, the image sensor is controllable to sequentially start exposure of subsets () of photodetectors; and a timing circuitry () configured to control the start of exposure of a subset of photodetectors based on a present data transfer capacity on a data transfer bus () configured to transfer data indicative of the acquired sensing signals from the optical biometric sensor to a host device ().

Adaptive readout from an optical biometric sensor to a host device

The present invention relates to an optical biometric sensor comprising: a read-out circuitry controllable for converting analog sensing signals to digital signals, the analog sensing signals being indicative of an image acquired by an image sensor comprising an array of photodetectors; and a timing circuitry configured to control the read-out circuitry to provide digital signals based on a present data transfer capacity on a data transfer bus configured to transfer data indicative of the digital signals from the optical biometric sensor to a host device.

Adaptive readout from a global shutter optical biometric sensor

There is provided a test module for testing a fingerprint sensing device comprising: an electrically conductive bottom element comprising an exterior surface portion configured to contact a sensing surface of the fingerprint sensing device; an electrically conductive intermediate element, connected to the bottom element on a side opposing the exterior surface, the intermediate element comprising a flexible material enabling the bottom element to change alignment in response to an applied force occurring when the exterior surface is pressed against a surface being tilted with respect to the exterior surface of the bottom element; and a top element configured connect the test module to a test fixture. There is also provided a method for testing a fingerprint sensing device using the described test module.

Test module for a fingerprint sensing device

A mobile device is provided comprising a light guide modified at a plurality of locations to let light guided in the light guide at least partially escape. Furthermore, methods and apparatuses for manufacturing such mobile devices are provided.

Mobile device with illumination

Apparatuses and methods which involve reading out an image sensor comprising an array of light-sensitive sensor elements are disclosed. In an embodiment, the light-sensitive sensor elements are grouped into a plurality of consecutive sensor element groups, and in an embodiment reading out the light-sensitive sensor elements is performed groupwise in an at least partially not according to the consecutive order of the groups.

Apparatus and method for image recording

A device may include a display capable of providing variable refresh rates, and a display controller that determines a refresh rate and outputs an image to the display based on the determined refresh rate.

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Lund, Sweden

Petter Östlund