Biometric acoustic writing system and method for identifying individuals and recognizing handwriting by using biometric data
First Claim
Patent Images
1. Biometric, acoustic writing system having:
- (a) a pen housing for making hand-guided movements on a substrate;
(b) at least one microphone, which is integrated in the pen housing, for acoustic recording of sound signals which are caused by the hand-guided movements;
characterized by (c) having a data processing unit for calculation of biometric data as a function of sound signals that are recorded.
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Abstract
Biometric writing system having a pen housing (3) for carrying out hand-guided movements on a substrate (4) at least one microphone (5), which is integrated in a housing (3), for acoustic recording of sound signals which are caused by the hand-guided movements; and a data processing unit (11) for calculation of biometric data as a function of the recorded sound signals.
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Citations
104 Claims
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1. Biometric, acoustic writing system having:
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(a) a pen housing for making hand-guided movements on a substrate;
(b) at least one microphone, which is integrated in the pen housing, for acoustic recording of sound signals which are caused by the hand-guided movements;
characterized by (c) having a data processing unit for calculation of biometric data as a function of sound signals that are recorded. - View Dependent Claims (2, 5, 6, 7, 8, 10, 11, 14, 19, 23, 45, 49, 52, 54, 55, 65, 66, 67, 70)
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3-4. -4. (canceled)
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9. (canceled)
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12-13. -13. (canceled)
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15-18. -18. (canceled)
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20-22. -22. (canceled)
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24-44. -44. (canceled)
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46-48. -48. (canceled)
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50-51. -51. (canceled)
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53. (canceled)
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56-64. -64. (canceled)
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68-69. -69. (canceled)
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71. Method for generation of personal-specific biometric reference data having the following steps:
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(a) acoustic recording of hand-guided writing movements which are carried out by a person using a pen on a substrate while writing a character, a word or a word sequence, and production of corresponding sound signal data;
(b) storage of the sound signal data that is produced, as a digital sound time signal;
(c) simultaneous recording of writing pressure signal data for the writing pressure, which data is transmitted from the pen to at least one pressure sensor;
(d) storage of the writing pressure signal data that is produced as digital time signals;
(e) calculation of frequency spectra as a spectrogram from the stored time-segmented sound and pressure time signals by means of a fast Fourier transformation;
(f) determination of amplitude time signals of selected frequencies in order to record amplitude dynamics in the calculated spectrogram, of the sound and pressure time signals;
(g) calculation of an associated frequency spectrum from the selected amplitude time signals by means of fast Fourier transformation;
(h) determination of first biometric data by means of feature extraction from the sound intensity of the digital time signals;
(i) determination of second biometric data by means of feature extraction from the pressure time signals;
(j) determination of third current biometric data by means of feature extraction from the calculated frequency spectra of the acoustic amplitude from the time signals;
(k) determination of fourth biometric data by means of feature extraction from the calculated frequency spectra for the amplitude time signals of the dynamic writing pressure data. - View Dependent Claims (80, 88, 90, 91, 102, 103)
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72-79. -79. (canceled)
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81-86. -86. (canceled)
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87. Method for verification and identification of a person, having the following steps:
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(a) comparison of the current biometric data with stored biometric reference data for that person in order to verify whether the current biometric data largely matches stored biometric reference data for that person;
(b) comparison of the current biometric data with stored biometric reference data for a large number of people in order to identify whether the current biometric data largely matches the stored biometric reference data for one of the stored people. - View Dependent Claims (89, 97)
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92-96. -96. (canceled)
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98-101. -101. (canceled)
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104-114. -114. (canceled)
Specification