Patents by Inventor Jaap Andre Haitsma
Jaap Andre Haitsma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20080126449Abstract: The invention relates to a method of distributing data files to a memory system having more than one memory devices. Each of the memory devices being arranged for storing at least one data file. The steps of the method comprise acquiring speed indicators indicating the writing speed of data into each memory device (S1); defining a distribution scenario according to the acquired speed indicators (S2); and distributing data files to the memory devices according to the defined distribution scenario (S3).Type: ApplicationFiled: July 4, 2005Publication date: May 29, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.Inventor: Jaap Andre Haitsma
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Patent number: 7286451Abstract: A digital media recorder and a method of controlling such are provided. During attempts to copy media content, sub-sequences are extracted from an input media sequence. A digital fingerprint of the sub-sequence is calculated and compared with at least one first reference fingerprint from a database. The outcome of the comparison determines the action to take in the further processing. Recording of the input media sequence on a media carrier is either allowed or obstructed, e.g. disallowed. In the case recording of the sequence is allowed, the database is updated with information that the digital media sequence has been recorded.Type: GrantFiled: June 23, 2003Date of Patent: October 23, 2007Assignee: Koninklijke Philips Electronics N.V.Inventors: Gijsbrecht Carel Wirtz, Antonius Adrianus Cornelis Maria Kalker, Antonius Adriaan Maria Staring, Jaap Andre Haitsma, Johan Paul Marie Gerald Linnartz
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Patent number: 7152161Abstract: methods of embedding and detecting a watermark in an information signal (x(n), y?(n)) which are robust against sampling rate conversions of the watermarked signal (y(n)) adapts frame lengths used by an embedder and the detector, respectively, so as to preserve a constant ratio between the respective sampling rate and frame length. The frame lengths may be calculated from a greatest common divisor of a set of sampling rates providing watermarks which are robust against sampling rate conversions between any sampling rates of the set of sampling rates.Type: GrantFiled: May 6, 2002Date of Patent: December 19, 2006Assignee: Koninklijke Philips Electronics N.V.Inventors: Alphons Antonius Maria Lambertus Bruekers, Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker, Minne Van Der Veen
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Patent number: 7016846Abstract: The invention relates to a method of checking the correct operation of a signal transformation wherein a input signal is transformed into an output signal. The method comprises: deriving a first robust feature from the input signal; deriving a second robust feature from the output signal; comparing said first and second robust features; in case of sufficient sumilarity, concluding a correct operation of said signal transformation, and in case of insufficient sumilarity, concluding a false operation of said signal transformation. In a special embodiment, the method is applied wherein the first robust feature is embedded in the input signal through watermark technology, the thus obtained signal being transmitted to a receiver so as to retrieve an output signal corresponding to said input signal.Type: GrantFiled: January 15, 2002Date of Patent: March 21, 2006Assignee: Koninklijke Philips Electronics N.V.Inventors: Alphons Antonius Maria Lambertus Bruekers, Jaap Andre Haitsma, Minne Van Der Veen, Antonius Adrianus Cornelis Maria Kalker
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Publication number: 20040257977Abstract: Disclosed is a method of adjusting a supplementary data signal (wm(n)) to be embedded in an information signal (x(n)), for example an audio signal. The method comprises the steps of determining (301) a position where a predetermined property of the information signal exceeds a predetermined threshold, e.g. an attack position, and suppressing (302) the supplementary data signal in a predetermined neighbourhood of the determined position.Type: ApplicationFiled: May 12, 2004Publication date: December 23, 2004Inventors: Minne Van Der Veen, Jaap Andre Haitsma, Antonius Asrianus Cornelis Maria Kalker, Alphons Antonius Maria Lambertus Bruekers
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Publication number: 20040250079Abstract: A video watermarking scheme is disclosed, which is designed for the digital cinema format, as it will be used on large projector screens in theaters. The watermark is designed in such a way that it has minimal impact on the video quality, but is still detectable after capture with a handheld camera and conversion to, for instance, VHS, CD-Video or DVD format. The proposed watermarking system only exploits the temporal axis. This makes it invulnerable to geometrical distortions generally caused by such a way of capturing. The watermark is embedded by modulating a global property of the frames (e.g. the mean luminance) in accordance with the samples of the watermark. The embedding depth is preferably locally adapted within each frame to local statistics of the respective image. Watermark detection is performed by correlating the watermark sequence with extracted mean luminance values of a sequence of frames.Type: ApplicationFiled: December 11, 2003Publication date: December 9, 2004Inventors: Antonius Adrianus Cornelis Maria Kalker, Jaap Andre Haitsma
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Publication number: 20040120523Abstract: An arrangement for embedding a watermark in an information signal is disclosed. In order to make the embedded watermark more robust against hacking, a property of the watermark is randomized (11) which is irrelevant for the watermark detection. One example is randomizing (111) the magnitudes (abs) of the Fourier transformed watermark. Another example is randomly shifting the spatial or temporal position of the watermark with respect to the signal at a relatively low temporal frequency. The invention allows embedding (13) of spatially different watermarks without affecting the performance of a detector.Type: ApplicationFiled: June 21, 2001Publication date: June 24, 2004Inventors: Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker
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Patent number: 6714658Abstract: Data is hidden in an information signal by encoding payload in to relative positions and/or polarities of multiple (possibly equal) embedded watermarks. The payload is retrieved by computing the correlation between the watermark(s) and the signal as a function of the position. The distance between peaks of the correlation function represents the payload. In order to precisely detect said distance, even if the peaks are smeared, the correlation function in a window (w1) around one peak (p1) is compared with the correlation function in a similar window (w2) around another peak (p2). This is done for different positions of said windows. The distance (k) between the windows (37,38) for which the correlation functions most resemble each other is the distance representing the payload.Type: GrantFiled: April 8, 2003Date of Patent: March 30, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Antonius Adrianus Cornelis Maria Kalker, Jaap Andre Haitsma
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Patent number: 6707930Abstract: The invention relates to a method of embedding a watermark W in an information signal P, to a corresponding arrangement for embedding a watermark W in an information signal P, to an information signal with an embedded watermark, and to a storage medium 50 having stored thereon an information signal P with an embedded watermark W. The watermark is embedded in the information signal by deriving sub-patterns Wi from said watermark pattern W, wherein the energy spectrum concentration of each sub-pattern Wi has a dominent orientation. The local weight factors &lgr;(P) for said watermark sub-patterns Wi are determined based on the local energy spectrum of the information signal P in said dominent orientation. Said watermark sub-patterns Wi are locally weighted using said determined local weight factors &lgr;(P). Finally, the locally weighted watermark sub-patterns (Wi) are added to the information signal P.Type: GrantFiled: November 2, 2001Date of Patent: March 16, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Antonius Adrianus Cornelis Maria Kalker, Jaap Andre Haitsma
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Patent number: 6671388Abstract: Most watermarking schemes are not resistant to geometric distortions of a watermarked image, because such manipulations destroy the correlation between the original watermark and the watermark in the manipulated image. In order to restore the correlation, a suspect image (Q) is analyzed (6) for the presence of a repeated data pattern. If such a pattern is found, it is concluded that the image has been watermarked by “tiling” a small-sized watermark pattern over the extent of the image. The actual detection of whether the watermark is a given watermark W is subsequently performed by determining the periodicity of the pattern found in the suspect image, and processing (9) the suspect image so as to match the periodicity of the processed image with the given periodicity of the watermark to be detected. If the suspect image indeed includes the given watermark W, the geometric manipulation is thereby undone and a conventional watermark detector (3) will signify this accordingly.Type: GrantFiled: September 25, 2000Date of Patent: December 30, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Marc Joseph Rita Op De Beeck, Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker
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Publication number: 20030190055Abstract: Data is hidden in an information signal by encoding payload in to relative positions and/or polarities of multiple (possibly equal) embedded watermarks. The payload is retrieved by computing the correlation between the watermark(s) and the signal as a function of the position. The distance between peaks of the correlation function represents the payload. In order to precisely detect said distance, even if the peaks are smeared, the correlation function in a window (w1) around one peak (p1) is compared with the correlation function in a similar window (w2) around another peak (p2). This is done for different positions of said windows. The distance (k) between the windows (37,38) for which the correlation functions most resemble each other is the distance representing the payload.Type: ApplicationFiled: April 8, 2003Publication date: October 9, 2003Inventors: Antonius Adrianus Cornelis M Kalker, Jaap Andre Haitsma
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Patent number: 6577747Abstract: Data is hidden in an information signal by encoding payload in to relative positions and/or polarities of multiple (possibly equal) embedded watermarks. The payload is retrieved by computing the correlation between the watermark(s) and the signal as a function of the position. The distance between peaks of the correlation function represents the payload. In order to precisely detect said distance, even if the peaks are smeared, the correlation function in a window (w1) around one peak (p1) is compared with the correlation function in a similar window (w2) around another peak (p2). This is done for different positions of said windows. The distance (k) between the windows (37,38) for which the correlation functions most resemble each other is the distance representing the payload.Type: GrantFiled: April 4, 2001Date of Patent: June 10, 2003Assignee: Koninklijke Philips Electronics N. V.Inventors: Antonius Adrianus Cornelis Maria Kalker, Jaap Andre Haitsma
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Publication number: 20030036910Abstract: Disclosed is a method of embedding a watermark in an information signal (x(n)), such as an audio signal. The method comprises the steps of segmenting the audio signal into overlapping frames (xs(n)) using a set of analysis windows (ha(n)), calculating watermark segments (ws′(n)) for the overlapping frames, reconstructing a watermark signal (w′(n)) from the watermark segments using a set of reconstruction windows (hr(n)) which are complementary to the analysis windows, and adding the watermark signal to the information signal. The analysis and reconstruction windows may be constructed on the basis of prototype windows to fulfil predetermined complementary conditions. The analysis and reconstruction windows may be adapted to the contents of the information signal.Type: ApplicationFiled: May 6, 2002Publication date: February 20, 2003Inventors: Minne Van Der Veen, Alphons Antonius Maria Lambertus Bruekers, Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker
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Publication number: 20030021443Abstract: This invention relates to a method and an arrangement for embedding auxiliary data in an information signal.Type: ApplicationFiled: July 23, 2002Publication date: January 30, 2003Inventors: Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker, Alphons Antonius Maria Lambertus Bruekers, Minne Van Der Veen
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Publication number: 20030004589Abstract: Disclosed are methods of embedding and detecting a watermark in an information signal (x(n), y′(n)) which are robust against sampling rate conversions (102) of the watermarked signal (y(n)). The frame lengths used by the embedder (101) and the detector (103), respectively, are adapted so as to preserve a constant ratio between the respective sampling rate and frame length. The frame lengths may be calculated from a greatest common divisor of a set of sampling rates providing watermarks which are robust against sampling rate conversions between any sampling rates of the set of sampling rates.Type: ApplicationFiled: May 6, 2002Publication date: January 2, 2003Inventors: Alphons Antonius Maria Lambertus Bruekers, Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker, Minne Van Der Veen
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Publication number: 20020184503Abstract: Disclosed is a non-frame-based method and an arrangement for embedding a watermark in an information signal (x(n)), e.g. an audio signal. The method comprises calculating (101) a non-cyclic convolution of the information signal with a watermark signal (v(n)) and combining (102) the convolution with the information signal. The non-cyclic convolution may be calculated by overlapped Fast Fourier transform filtering.Type: ApplicationFiled: May 6, 2002Publication date: December 5, 2002Inventors: Antonius Adrianus Cornelis Maria Kalker, Jaap Andre Haitsma, Minne Van Der Veen, Alphons Antonius Maria Lambertus Bruekers
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Publication number: 20020178410Abstract: Hashes are short summaries or signatures of data files which can be used to identify the file. Hashing multimedia content (audio, video, images) is difficult because the hash of original content and processed (e.g. compressed) content may differ significantly.Type: ApplicationFiled: February 11, 2002Publication date: November 28, 2002Inventors: Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker, Constant Paul Marie Jozef Baggen, Job Cornelis Oostveen
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Publication number: 20020105907Abstract: The invention relates to a method of checking the correct operation of a signal transformation wherein a input signal is transformed into an output signal.Type: ApplicationFiled: January 15, 2002Publication date: August 8, 2002Inventors: Alphons Antonius Maria Lambertus Bruekers, Jaap Andre Haitsma, Minne Van Der Veen, Antonius Adrianus Cornelis Maria Kalker
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Publication number: 20020085736Abstract: The invention relates to a method of embedding a watermark W in an information signal P, to a corresponding arrangement for embedding a watermark W in an information signal P, to an information signal with an embedded watermark, and to a storage medium 50 having stored thereon an information signal P with an embedded watermark W. The watermark is embedded in the information signal by deriving sub-patterns Wi from said watermark pattern W, wherein the energy spectrum concentration of each sub-pattern Wi has a dominent orientation. The local weight factors &lgr;(P) for said watermark sub-patterns Wi are determined based on the local energy spectrum of the information signal P in said dominent orientation. Said watermark sub-patterns Wi are locally weighted using said determined local weight factors &lgr;(P). Finally, the locally weighted watermark sub-patterns (Wi) are added to the information signal P.Type: ApplicationFiled: November 2, 2001Publication date: July 4, 2002Inventors: Antonius Adrianus Cornelis Maria Kalker, Jaap Andre Haitsma
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Publication number: 20020087864Abstract: The invention relates to a method of embedding a watermark W in an information signal P, to a corresponding arrangement for embedding a watermark W in an information signal P, to an information signal P with an embedded watermark W and to a storage medium 50 having stored thereon an information signal P with an embedded watermark W. This method is carried out by determining local weight factors &lgr;(P) for said watermark based on data of said information signal P, wherein said local weight factors &lgr;(P) are determined such that the embedded watermark W is rendered substantially imperceptible when embedded in said information signal. The watermark W is locally weighted using said determined local weight factors &lgr;(P). Then said locally weighted watermark is embedded in said information signal P. When determining said local weight factors &lgr;(P) of said watermark W temporal data of said information signal are taken into account.Type: ApplicationFiled: November 2, 2001Publication date: July 4, 2002Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Geert Florimond Gerard Depovere, Jaap Andre Haitsma, Antonius Adrianus Cornelis Maria Kalker