A method for checking an authenticity feature having an optical storage phosphor, to an apparatus for checking, an authenticity feature and to a value document having an authenticity feature. The authenticity feature has an optical storage phosphor. The optical storage phosphor may be subjected to at least one query sequence, respectively comprising at least a first readout process and a second readout process. Respectively at least a first and a second readout measurement value are captured, which respectively are based on the detection of an optical emission in response to the respectively first or the respectively second associated readout process. A readout measurement value time series is respectively associated with the at least one query sequence, and is respectively associated with the query sequence for determining a dynamic behaviour from the readout measurement value time series under the respectively associated query sequence is evaluated in a further step.

A method for checking an authenticity feature having an optical storage phosphor, to an apparatus for checking, an authenticity feature and to a value document having an authenticity feature. The authenticity feature has an optical storage phosphor. The optical storage phosphor may be subjected to at least one query sequence, respectively comprising at least a first readout process and a second readout process. Respectively at least a first and a second readout measurement value are captured, which respectively are based on the detection of an optical emission in response to the respectively first or the respectively second associated readout process. A readout measurement value time series is respectively associated with the at least one query sequence, and is respectively associated with the query sequence for determining a dynamic behaviour from the readout measurement value time series under the respectively associated query sequence is evaluated in a further step.

A wirelessly powered display comprises a substrate, an antenna with multiple turns disposed on the substrate, an electronic circuit disposed on the substrate, and one or more pixels each having one or more inorganic light-emitting diodes disposed on the substrate. The electronic circuit is electrically connected to the one or more inorganic LEDs and the antenna, the antenna is responsive to electromagnetic energy to provide electrical power, and the electronic circuit includes a power converter that converts a signal with a relatively high current and low voltage to a signal with a relatively high voltage and low current. A wirelessly coupled display system includes a device including a wireless power transmitter that provides wireless power within a specified range and one or more wirelessly powered displays located within the range and responsive to the wireless power provided by the device to display an image.

A banknote is irradiated with lights of plural wavelengths. Images of the banknote for each wavelength are acquired. An IR ratio image having a pixel value that is a ratio of a pixel value of the image acquired by the visible light to a corresponding pixel value of the image acquired by the infrared light is generated. The banknote image and the IR ratio image are corrected by a coefficient corresponding to the banknote type, the banknote orientation, and the wavelength. From the banknote image or the IR ratio image, by using the information pertaining to the banknote type, the banknote orientation, and the wavelength, intermediate evaluation values are calculated for each wavelength. Mahalanobis distance is calculated based on the intermediate evaluation values, an average value and a variance-covariance matrix of the intermediate evaluation values, and a degree of soiling is determined based on the Mahalanobis distance.

A banknote is irradiated with lights of plural wavelengths. Images of the banknote for each wavelength are acquired. An IR ratio image having a pixel value that is a ratio of a pixel value of the image acquired by the visible light to a corresponding pixel value of the image acquired by the infrared light is generated. The banknote image and the IR ratio image are corrected by a coefficient corresponding to the banknote type, the banknote orientation, and the wavelength. From the banknote image or the IR ratio image, by using the information pertaining to the banknote type, the banknote orientation, and the wavelength, intermediate evaluation values are calculated for each wavelength. Mahalanobis distance is calculated based on the intermediate evaluation values, an average value and a variance-covariance matrix of the intermediate evaluation values, and a degree of soiling is determined based on the Mahalanobis distance.

There is provided a bill handling system (1) including a camera (440), a grasping unit (430), and a control unit (100) for photographing the inside of the cashbox (10) by the camera (440) after a bill (B) in the cash box (10) is taken out by the grasping unit (430), determining whether or not a bill (B) remains in the cash box (10) based on the photographed image, and performing error processing when the bill (B) remains in the cash box (10).

A method for checking, in particular the authenticity and/or the nominal value of a value document having luminescent feature substances, comprises: a1) the step of carrying out a location-specific measurement of first luminescence intensities at a first emission wavelength at different locations of the value document that have the location coordinates, to thereby obtain measurement value pairs; b1) the step of statistically analyzing the first luminescence intensities measured in dependence on the individual location coordinates, by determining at least one statistical parameter using a statistical method; and c1) the step of comparing the statistical parameter determined in the step b1) with one or more threshold values.

A method for checking, in particular the authenticity and/or the nominal value of a value document having luminescent feature substances, comprises: a1) the step of carrying out a location-specific measurement of first luminescence intensities at a first emission wavelength at different locations of the value document that have the location coordinates, to thereby obtain measurement value pairs; b1) the step of statistically analyzing the first luminescence intensities measured in dependence on the individual location coordinates, by determining at least one statistical parameter using a statistical method; and c1) the step of comparing the statistical parameter determined in the step b1) with one or more threshold values.

By overlapping lighting timings of light sources that emit lights of a plurality of different wavelength bands including a wavelength band of at least a visible light region and an infrared light region, the lights of the plurality of the different wavelength bands including the wavelength band of at least the visible light region and the infrared light region are emitted on a banknote while securing an overlap in timings thereof. Moreover, by using light receiving elements each including a bandpass filter that allows only light of a wavelength range that corresponds to the wavelength band of each of the light sources, received light intensities of the light of the wavelength range that corresponds to the wavelength band of each of the light sources are acquired simultaneously, and image data are formed based on the received light intensity of every acquired wavelength band.

A method of authenticating an object (12) includes applying indicia (14) to the object, wherein the indicia includes at least two different types of particles which fluoresce upon exposure to light (15) and which have different decay rates. The indicia is exposed to light from a lamp (32) causing the plurality of particles to fluoresce. At least a first image of the indicia is captured with a sensor (22) at a first time and a second image of the indicia at a second time different from the first time. The images are analyzed to determine decay rates of the at least two types of particles and object is authenticated if the decay rates match stored information.