Source: http://www.google.com/patents/US7755680?dq=7,468,661
Timestamp: 2014-03-17 05:01:45
Document Index: 713649381

Matched Legal Cases: ['Application No. 2006', 'Application No. 2006', 'Application No. 2006', 'Application No. 2006', 'Application No. 2006', 'Application No. 2006', 'Application No. 2006']

Patent US7755680 - Image signal processor and deficient pixel detection method - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA deficiency candidate detection circuit detects a deficient pixel candidate by comparing the image signal of a target pixel with the image signals of peripheral pixels, and address information of the deficient pixel candidate is stored in a position memory circuit. A deficiency determining circuit repeats...http://www.google.com/patents/US7755680?utm_source=gb-gplus-sharePatent US7755680 - Image signal processor and deficient pixel detection methodAdvanced Patent SearchPublication numberUS7755680 B2Publication typeGrantApplication numberUS 11/426,754Publication dateJul 13, 2010Filing dateJun 27, 2006Priority dateOct 27, 1999Fee statusPaidAlso published asCN1164083C, CN1295255A, US7092018, US7746393, US20060232691, US20060233431Publication number11426754, 426754, US 7755680 B2, US 7755680B2, US-B2-7755680, US7755680 B2, US7755680B2InventorsTohru WatanabeOriginal AssigneeSanyo Electric Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (26), Non-Patent Citations (11), Referenced by (6), Classifications (32), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetImage signal processor and deficient pixel detection methodUS 7755680 B2Abstract A deficiency candidate detection circuit detects a deficient pixel candidate by comparing the image signal of a target pixel with the image signals of peripheral pixels, and address information of the deficient pixel candidate is stored in a position memory circuit. A deficiency determining circuit repeats the determination of a deficient pixel a number of times based on the address information stored in the position memory circuit, and determines address information of a deficient pixel from the continuity of the determination results. A deficiency registering circuit registers the determined address information in the position memory circuit. A deficiency correction circuit corrects the image signal of the deficient pixel according to the registered address information of the deficient pixel.
RELATED APPLICATIONS This application is a divisional and claims the benefit of priority under 35 USC 120 of U.S. application Ser. No. 09/696,393, filed Oct. 25, 2000, now U.S. Pat. No. 7,092,018, issued Aug. 15, 2006. Under the 35 USC 119, the Ser. No. 09/696,393 application claims the benefit of three foreign priority applications filed in Japan, serial number 2000-282166, filed Sep. 18, 2000; serial number 11-305805, filed Oct. 27, 1999; serial number 11-307125, filed Oct. 28, 1999. The disclosure of the prior applications are considered part of and are incorporated by reference in the disclosure of this application.
The deficiency candidate detection circuit 12 generates a first threshold value Lw for determining a white deficiency and a second threshold value Lb for determining a black deficiency from the image signals Y(P1) to Y(P8) of the peripheral pixels P1-P8 supplied from the image memory circuit 11. The deficiency candidate detection circuit 12 compares the first and second threshold values Lw and Lb with the image signal Y(P0) to detect a pixel which is a possible deficient pixel (hereinafter referred to as �deficiency candidate�).
The first to fourth subtractors 61-64 respectively divide the image signals Y(P2), Y(P7), Y(P4) and Y(P5) supplied from the image memory circuit 11 by �4�.
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No. 11/426,759, through Jan. 23, 2009.2Action and Response History retrieved from PAIR for U.S. Appl. No. 11/426,759, through Jun. 30, 2009.3Amendment filed on Nov. 2, 2006 for Japanese Patent Application No. 2006-002720 with English translation, 4 pages, corresponding to U.S. Appl. No. 11/426,759.4Amendment filed on Nov. 2, 2006 for Japanese Patent Application No. 2006-002721 with English translation, 5 pages, corresponding to U.S. Appl. No. 11/426,754.5Amendment filed on Sep. 6, 2007 for Japanese Patent Application No. 2006-002721 with English translation, 5 pages, corresponding to U.S. Appl. No. 11/426,754.6Decision of Rejection dated Jul. 11, 2007 with English translation for counterpart Japanese Application No. 2006-002720, 4 pages, corresponding to U.S. Appl. No. 11/426,759.7Decision of Rejection dated Jul. 12, 2007 with English translation for counterpart Japanese Application No. 2006-002721, 4 pages, corresponding to U.S. Appl. No. 11/426,754, corresponding to U.S. Appl. No. 11/426,754.8Korean Publication No. 1999-0041744, filed Nov. 24, 1997, Applicant: LG Electronics, Inc., Seoul, Korea.9Notification of Reasons for Rejection dated Aug. 28, 2006 with English translation for counterpart Japanese Application No. 2006-002720, 4 pages, corresponding to U.S. Appl. No. 11/426,729.10Notification of Reasons for Rejection dated Aug. 28, 2006 with English translation for counterpart Japanese Application No. 2006-002721, 4 pages, corresponding to U.S. Appl. No. 11/426,754.11Patent Abstracts of Japan, Publication No. 05-260385, Publication Date: Oct. 8, 1993, Title: "Defect Picture Element Detection Circuit for Solid-State Image Pickup Device".Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8139128 *Jul 29, 2009Mar 20, 2012Elmo Company, LimitedImage capture device and image processing method for the sameUS8325252 *Aug 26, 2010Dec 4, 2012Sony CorporationSolid-state imaging device and data processing deviceUS8587701 *Mar 16, 2011Nov 19, 2013Kabushiki Kaisha ToshibaImage processing apparatus, camera module, and image processing methodUS20100026861 *Jul 29, 2009Feb 4, 2010Hiroshi NagatsumaImage capture device and image processing method for the sameUS20110102650 *Aug 26, 2010May 5, 2011Sony CorporationSolid-state imaging device and data processing deviceUS20120019691 *Mar 16, 2011Jan 26, 2012Kabushiki Kaisha ToshibaImage processing apparatus, camera module, and image processing method* Cited by examinerClassifications U.S. Classification348/247International ClassificationH04N1/028, H04N5/367, G06T7/00, G01R31/28, H04N5/372, H04N5/335, H01L21/66, G09G3/00, G06T5/00, H04N5/378, H04N5/14, H01L27/148, H04N5/21, G06T1/00, H04N9/64Cooperative ClassificationG06T5/20, G06T5/005, G09G2330/10, G09G3/006, G06T7/0002, H01L27/14806, H04N5/3675, H04N5/21, H04N5/367European ClassificationH04N5/367A, H04N5/21, H04N5/367, G06T5/00D, H01L27/148A, G09G3/00E, G06T7/00BLegal EventsDateCodeEventDescriptionDec 30, 2013FPAYFee paymentYear of fee payment: 4May 1, 2012CCCertificate of correctionApr 3, 2012CCCertificate of correctionJul 14, 2011ASAssignmentOwner name: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, ARIZONAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SANYO ELECTRIC CO., LTD.;REEL/FRAME:026594/0385Effective date: 20110101RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google