Patent application number | Description | Published |
20080205207 | Radial Tracking Method and Apparatus for an Optical Information Carrier Format with Non-Uniformly Spaced Tracks - A radial tracking method for an optical information carrier format with non-uniformly spaced tracks is disclosed, wherein a plurality of tracks ( | 08-28-2008 |
20080205208 | Optical System With Filtered Push Pull Radial Tracking - The present invention relates to optical system capable of reproducing information from an optical carrier by a main beam (C) for reading information as readable effects on the carrier, and a first (A) and a second (B) auxiliary beam. The optical system is adapted to direct the main beam (C) and the first (A) and second (B) auxiliary beam onto the carrier so that the main beam is positioned on a first track, and the first and second auxiliary beam are oppositely positioned on a second and a third track. The optical system can adjust a push pull (PP) radial error signal from the main beam by a function; ƒ=ƒ(A, B, C), where the function ƒ is dependent upon adjacently positioned readable effects in the first, second and third track i.e. the local optical environment of the main beam. Therefore a filtering or “cleaning” of the push pull signal is performed depending on the local optical environment of the main beam. | 08-28-2008 |
20080225656 | Cross-Talk Cancellation in Three-Spots Push-Pull Tracking Error Signal in Optical Disc Systems - A method and system for cross-talk cancellation in a three-spots push-pull tracking error signal in an optical disc system is disclosed. A tracking error signal (TES) is determined from a plurality of error signals (PP | 09-18-2008 |
20080247288 | Optical Disk Drive and Tracking Error Detection Method For an Optical Disk Drive - The present invention relates to a tracking error detection method for an optical storage system wherein an optical disk comprises a plurality of adjacent track portions with a radial track pattern in which a number n>2 of adjacent track portions repeatedly exhibit non-uniform radial track distances (TP | 10-09-2008 |
20080247296 | Optical Storage Disk and System Comprising a Disk with Non-Uniformly Spaced Tracks - The present invention relates to an optical storage disk for both read-only and (re-)writable applications comprising a plurality of adjacent track portions with a radial track pattern in which a number of n≧2 adjacent track portions repeatedly exhibit non-uniform radial track distances TP | 10-09-2008 |
20080267025 | Method of Lens Positioning For Tilt Compensation, Method and Apparatus For Reading And Recording Data Onto An Optical Disc - A method of controlling the positioning of an objective lens of a lens system for controlling an optical beam used in reading and/or recording information from/onto a track of an optical disc, the method comprising steps of detecting modulated optical signals corresponding to the intensity of a reflected optical beam, the reflected optical beam being modulated by the periodic structures of the track of the optical disc, deriving a radial tilt error signal from the modulated optical signals indicative of a radial tilt, wherein the radial tilt refers to the tilt of the objective lens with respect to the optical disc in a radial direction; using the radial tilt error signal for adjusting the position of the objective lens with respect to the optical disc in a radial direction, the method characterized by using the radial tilt error signal for adjusting the position of the objective lens by means of a feedback loop. The radial tilt error signal may be proportional to a cross correlation signal between a Radial Push Pull (RPP) signal and a Central Aperture (CA) signal or a cross correlation signal between a Radial Push Pull (RPP) and a Diagonal Push Pull (DPP) signal. | 10-30-2008 |
20080310274 | Radial Tilt Estimation Via Diagonal Push-Pull - A device is arranged for scanning an optical record carrier ( | 12-18-2008 |
20090028021 | Radial To Focus Cross Talk Cancellation In Optical Storage Systems - A signal processing technique is proposed for compensating for radial to focus crosstalk in an optical storage system including an astigmatic lens ( | 01-29-2009 |
20090028022 | SINGLE SPOT CROSS-CORRELATION TRACKING - A tracking error (TE) signal is formed from a single spot on a photodetector | 01-29-2009 |
20090097368 | REAL TIME POWER CONTROL FOR OPTICAL RECORDING DRIVES - The invention discloses an optical recording drive for recording data on an optical carrier such as an optical disk of the DVD or BD format. A radiation source is arranged to emit a write pulse train ( | 04-16-2009 |
20100027397 | TRACKING BY CROSS CORRELATING CENTRAL APERTURES OF MULTIPLE BEAMS - The present invention provides a method and apparatus for robust tracking at narrow track-pitches on optical discs, enabling higher densities on Blu-ray Discs ( | 02-04-2010 |
20100085849 | OPTICAL DISC DRIVE AND METHOD FOR PREPROCESSING A DISC READ OUT SIGNAL - The present invention discloses an optical drive and a method for preprocessing a disc readout signal r | 04-08-2010 |
20110012759 | ACTIVITY MONITORING SYSTEM INSENSITIVE TO ACCELERATIONS INDUCED BY EXTERNAL MOTION FACTORS - This invention relates to an activity monitoring system adapted to eliminate passive movement components caused by external forces from readout data produced by a first and a second motion sensor when attached to a subject during movement. The readout data include gravitational components, movement components caused by active movement of the subject or subject parts, and the passive movement components. A processor estimates first and second gravitational components produced by the at least first and a second motion sensors. It determines a rotation matrix based on the estimated gravitational components, the rotation matrix denoting rotation required for the first sensor to get aligned with the second sensor in orientation. It then multiplies the readout data produced by the first motion sensor with the rotation matrix when rotating the first sensor towards the second sensor. Finally, it subtracts the result of the multiplying from the readout data produced by the second motion sensor when rotating the first motion sensor towards the second motion sensor. | 01-20-2011 |
20110137200 | COMPENSATION OF MOTION ARTIFACTS IN CAPACITIVE MEASUREMENT OF ELECTROPHYSIOLOGICAL SIGNALS - The invention relates to a system and a method in which an electrophysiological signal is sensed capacitively with at least two closely spaced electrodes such that the electrodes experience strongly correlated skin-electrode distance variations. To be able to derive a motion artifact signal, the capacitive coupling between the electrodes and skin is made intentionally different. With a signal processing means the motion artifact signal can be removed from the measured signal to leave only the desired electrophysiological signal. Since the measured quantity is dependant on the electrode-skin distance itself, the system and method do not need to rely on the constancy of a transfer function. Hereby, they give reliable motion artifact free output signals. | 06-09-2011 |
20110261666 | REAL TIME POWER CONTROL FOR OPTICAL RECORDING DRIVES - The invention discloses an optical recording drive for recording data on an optical carrier such as an optical disk of the DVD or BD format. A radiation source is arranged to emit a write pulse train ( | 10-27-2011 |
20110276304 | DETERMINING ENERGY EXPENDITURE OF A USER - The invention relates to an electronic device for estimating energy consumption of a person. The electronic device uses a mathematical model based on acceleration data for estimating the person's energy consumption as a function of the actual performed activity and acceleration values. The acceleration values are converted to an estimate of energy consumption of a given activity by scaling a value of time integrated acceleration data with an activity scaling parameter. The activity scaling parameters for different activities have been determined off-line by comparing measured energy consumptions over e.g. a day with estimated energy consumptions over the same period, where the estimated values are determined using the mathematical model. | 11-10-2011 |
20120040348 | METHODS FOR NUCLEIC ACID QUANTIFICATION - The invention relates to a method for quantification of amplified nucleic acids comprising the steps of: calculation of a measure of randomness M of the cycle-to-cycle amplification efficiency Ê(C) for target and comparative nucleic acids, —identification of the cycle numbers C | 02-16-2012 |
20120072168 | SENSING DEVICE FOR DETECTING A WEARING POSITION - The invention relates to sensing device ( | 03-22-2012 |
20120197610 | ANALYZING TOOL FOR AMPLIFICATION REACTIONS - The invention relates to a method and apparatus for obtaining information from an amplification curve of a target nucleic acid sequence or sequences by defining at least one model function that describes the amplification curve and that contains at least one parameter that is related to a physical quantity that influences the signals recorded, fitting said model function to the amplification curve, and obtaining information with respect to said physical quantity by identifying the value of said parameter that results in the best fit of the model function. | 08-02-2012 |
20120302900 | METHOD AND APPARATUS FOR PROCESSING A CYCLIC PHYSIOLOGICAL SIGNAL - The invention relates to a method and apparatus for processing a cyclic physiological signal ( | 11-29-2012 |
20130131525 | MONITORING OF VITAL BODY SIGNALS DURING MOVEMENT - The present invention relates to a multi-sensor system and method of monitoring vital body signals during movement of a body of a human or an animal, wherein acceleration sensors are placed at body locations in such a way that an acceleration angle change induced by said vital body signals differs between said at least two acceleration sensors. The retrieval of the vital body signals is achieved by extracting a wanted vital body signal based on measurement results from multiple sensors that may be motion contaminated. Three retrieval schemes are proposed, each with preferred sensor locations that provide optimal performance of retrieving the vital body signal(s). | 05-23-2013 |