Source: http://www.google.com/patents/US8121359?dq=5435091
Timestamp: 2016-09-30 22:43:38
Document Index: 11607757

Matched Legal Cases: ['arts 40', 'arts 42', 'arts 40', 'arts 42', 'arts 40', 'arts 42']

Patent US8121359 - Fingerprint identification system and method of an electronic device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsAn electronic device having a fingerprint identification system obtains a voltage graph of a fingerprint from pressed signals of a user logging in via a touch panel of the electronic device. The system detects fingerprint characteristic points in the voltage graph of the fingerprint of the user logging...http://www.google.com/patents/US8121359?utm_source=gb-gplus-sharePatent US8121359 - Fingerprint identification system and method of an electronic deviceAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS8121359 B2Publication typeGrantApplication numberUS 12/344,572Publication dateFeb 21, 2012Filing dateDec 28, 2008Priority dateNov 12, 2008Fee statusPaidAlso published asCN101739564A, US20100119125Publication number12344572, 344572, US 8121359 B2, US 8121359B2, US-B2-8121359, US8121359 B2, US8121359B2InventorsMeng-Chieh ChouOriginal AssigneeChi Mei Communication Systems, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (4), Non-Patent Citations (1), Referenced by (1), Classifications (9), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetFingerprint identification system and method of an electronic device
US 8121359 B2Abstract
a non-transitory computer readable medium that stores original fingerprint characteristic values of authorized users of the electronic device;
an obtaining module configured for receiving pressed signals from the touch panel, and obtaining a voltage graph of a fingerprint of a user logging into the electronic device from the pressed signals;
a detecting module configured for detecting fingerprint characteristic points in the voltage graph of the fingerprint, and computing fingerprint characteristic values according to the detected fingerprint characteristic points;
a determining module configured for determining if the computed fingerprint characteristic values match the original fingerprint characteristic values of an authorized user in the non-transitory computer readable medium; and
a validating module configured for validating an identification of the user logging in if the fingerprint characteristic values match the original fingerprint characteristic values of the authorized user in the non-transitory computer readable medium wherein the original fingerprint characteristic values and the fingerprint characteristic values comprise a characteristic point count, characteristic point coordinates, a linked shape of the characteristic points, and relative positions between adjacent characteristic points.
the obtaining module is further configured for obtaining original voltage graphs of fingerprints of the authorized users in response to receiving pressed signals from the touch panel;
the detecting module is further configured for detecting original fingerprint characteristic points in the original voltage graphs of the fingerprints, and computing original fingerprint characteristic values according to the original fingerprint characteristic points.
3. The system according to claim 2, further comprising a storing module configured for storing the original fingerprint characteristic points and the original fingerprint characteristic values into the non-transitory computer readable medium.
6. A fingerprint identification method of an electronic device, the electronic device having a touch panel and a non-transitory computer readable medium, the method comprising:
storing original fingerprint characteristic values of authorized users of the electronic device in the non-transitory computer readable medium;
receiving pressed signals from the touch panel, and obtaining a voltage graph of a fingerprint of a user logging into the electronic device from the pressed signals;
detecting fingerprint characteristic points in the voltage graph of the fingerprint, and computing fingerprint characteristic values according to the detected fingerprint characteristic points;
determining if the computed fingerprint characteristic values match the original fingerprint characteristic values of an authorized user in the non-transitory computer readable medium; and
validating an identification of the user logging in if the fingerprint characteristic values match the original fingerprint characteristic values of the authorized user in the non-transitory computer readable medium wherein the original fingerprint characteristic values and the fingerprint characteristic values comprise a characteristic point count, characteristic point coordinates, a linked shape of the characteristic points, and relative positions between adjacent characteristic points.
7. The method according to claim 6, wherein the storing block comprises:
receiving pressed signals from the touch panel, and obtaining a voltage graph of an authorized user from the pressed signals of the authorized user logging in the electronic device;
detecting the original fingerprint characteristic points of the authorized user in the original voltage graph of the fingerprint, and computing the original fingerprint characteristic values of the authorized user according to the original fingerprint characteristic points; and
storing the original fingerprint characteristic points and the original fingerprint characteristic values of the authorized user into the non-transitory computer readable medium.
8. The method according to claim 6, wherein the fingerprint characteristic points comprise main characteristic points and sub-characteristic points in the voltage graph of the fingerprint.
9. A storage medium having stored thereon instructions that, when executed by an electronic device, cause the electronic device to perform a fingerprint identification method of the electronic device, the method comprising:
validating an identification of the user logging in if the fingerprint characteristic values match the original fingerprint characteristic values of the authorized user in the non-transitory computer readable medium.
10. The non-transitory computer readable medium as claimed in claim 9, wherein the fingerprint characteristic points comprise main characteristic points and sub-characteristic points in the voltage graphs of the fingerprint.
11. The non-transitory computer readable medium as claimed in claim 9, wherein the storing block comprises:
storing the original fingerprint characteristic points and the original fingerprint characteristic values of the authorized user into the non-transitory computer readable medium. Description
The detecting module 101 is configured for detecting original fingerprint characteristic points of each user in the original voltage graph of each fingerprint from the storage system 14, and computing the original fingerprint characteristic values of each user according to the original fingerprint characteristic points. FIG. 3 shows an example of exemplary characteristic points of original fingerprint characteristic points or fingerprint characteristic points of a currently input fingerprint, such as from a user logging into the electronic device 1. The exemplary characteristic points may be used to compare with the original fingerprints in the storage system 14 to verify the authenticity of the user. In FIG. 3, the voltage graph of the fingerprint is highlighted with a plurality of circular parts 40 and rectangular parts 42. The circular parts 40 and the rectangular parts 42 indicate the characteristic points detected in the voltage graph. The circular parts 40 represent sub-characteristic points, which include whorls and a triradius of the fingerprint. The rectangular parts 42 represent main characteristic points, which include broken fingerprint ridges and bifurcating fingerprint ridges.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS6052475 *Aug 4, 1997Apr 18, 2000Trw Inc.Fingerprint detector using ridge resistance sensing arrayUS6259804 *May 16, 1997Jul 10, 2001Authentic, Inc.Fingerprint sensor with gain control features and associated methodsUS6990219 *Dec 12, 2001Jan 24, 2006Nippon Telegraph And Telephone CorporationImage capturing method and apparatus and fingerprint collation method and apparatusUS20090326840 *Jun 26, 2008Dec 31, 2009International Business Machines CorporationTemperature-Profiled Device Fingerprint Generation and Authentication from Power-Up States of Static Cells* Cited by examinerNon-Patent CitationsReference1 *T.W. Lim et al. "Capacitive fingerprint sensor chip for automatic matching". I.E.E.E. Conference, vol. 2, pp. 442-446, Year 2000.* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS8495431 *May 30, 2012Jul 23, 2013International Business Machines CorporationTemperature-profiled device fingerprint generation and authentication from power-up states of static cells* Cited by examinerClassifications U.S. Classification382/124, 382/115, 382/126, 382/125International ClassificationG06K9/00Cooperative ClassificationG06K9/00073, G07C9/00158European ClassificationG07C9/00C2D, G06K9/00A2MLegal EventsDateCodeEventDescriptionDec 28, 2008ASAssignmentOwner name: CHI MEI COMMUNICATION SYSTEMS, INC.,TAIWANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHOU, MENG-CHIEH;REEL/FRAME:022031/0142Effective date: 20081223Owner name: CHI MEI COMMUNICATION SYSTEMS, INC., TAIWANFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHOU, MENG-CHIEH;REEL/FRAME:022031/0142Effective date: 20081223Aug 14, 2015FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services