Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
A system for verifying labels comprising in combination; a. a first photocell matrix; b. means for orienting a label and for imaging it onto the plane of the photocell matrix; c. means for amplifying the output of each individual photocell, d. means for limiting said amplified output to produce voltage pulses having a predetermined voltage with respect to a predetermined threshold voltage, whereby signal outputs in each photocell form a series of digital voltages. e. a digital comparator and means for connecting the digital voltage pulses thereto; f. a second photocell matrix and a second means for orienting a label and imaging it onto a plane of a second photocell matrix; g. Means for amplifying the individual photocell outputs of said matrix; h. means for limiting said amplified outputs to produce voltage pulses with respect to predetermined threshold voltage; i. means for connecting said pulses into the digital comparator and an output from the comparator which depends on the comparison of the digital voltage pulses from the two photocell matrices.
Claim 2
Independent Claim
170 words
A system for verifying labels comprising in combination; a. a first photocell matrix; b. means for orienting a label and for imaging it onto the plane of the photocell matrix; c. means for amplifying the output of each individual photocell, d. means for limiting said amplified output to produce voltage pulses having a predetermined voltage with respect to a predetermined threshold voltage, whereby signal outputs in each photocell form a series of digital voltages. e. a digital comparator and means for connecting the digital voltage pulses thereto; f. a second photocell matrix and a second means for orienting a label and imaging it onto a plane of a second photocell matrix; g. Means for amplifying the individual photocell outputs of said matrix; h. means for limiting said amplified outputs to produce voltage pulses with respect to predetermined threshold voltage; i. means for connecting said pulses into the digital comparator and an output from the comparator which depends on the comparison of the digital voltage pulses from the two photocell matrices.
Claim 3
Dependent Claim
32 words
A system according to claim 1 in which each photocell matrix is provided with an optical filter increasing the contrast between radiation from symbols on the label and from the label substrate.
Claim 4
Dependent Claim
52 words
A system according to claim 2 in which symbols on the labels are in photoluminescent materials, means are provided for illuminating the labels with ultraviolet light, and the filters before the matrices selectively transmit the light wavelength range of photoluminescence from the symbols, said filters being substantially opaque to reflected ultraviolet light.
Claim 5
Dependent Claim
91 words
A system according to claim 1 in which means are provided for moving labeled containers and the means include a switching means coming into play for a short period of time when a label is in a position to be imaged on the matrix, said switching means actuating electronic gating means for permitting pulses from the limiting and threshold circuits to pass to the digital comparator, the short period of time during which the gates are opened being sufficient to transmit digital pulses from all of the photocells of a matrix.
Claim 6
Dependent Claim
91 words
A system according to claim 2 in which means are provided for moving labeled containers and the means include a switching means coming into play for a short period of time when a label is in a position to be imaged on the matrix, said switching means actuating electronic gating means for permitting pulses from the limiting and threshold circuits to pass to the digital comparator, the short period of time during which the gates are opened being sufficient to transmit digital pulses from all of the photocells of a matrix.
Claim 7
Dependent Claim
90 words
A system according to claim 2 in which a portion of the area of symbols on the label carries symbols in one luminescent material and a portion in another, the luminescence from the two portions being different and the filter before the photocell matrix being in the form of a multizonal filter, the zones corresponding to the image area on the photocell matrix from each of the zones on the label in which the symbols of materials producing an image in electromagnetic radiation correspond to the transmission of the filter.