Quotables
"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7672802 | Apparatus and method for calibrating earphones for audiometric testing A system and method for performing audiometric testing utilizes an independently normalized audiometer and independently calibrated earphones. ... | 03/02/2010 |
| 7587291 | Focusing of broadband acoustic signals using time-reversed acoustics A method for focusing broadband acoustic signals with flat spectral content based on Time-Reversed Acoustics (TRA) principle is disclosed. The method of the invention differs from the conventional TRA focusing in that it includes an additional step of adjusting the ... | 09/08/2009 |
| 7425001 | Sheet handling apparatus and image reading apparatus A sheet handling apparatus includes a sheet stacker for stacking sheets; a separating device for separating and feeding the sheets stacked on the sheet stacker; and a register roller disposed adjacent to the separating device for correcting a skew of the sheet. An u... | 09/16/2008 |
| 7386408 | Parallel kinematic machine, calibration method of parallel kinematic machine, and calibration program product A parallel kinematic machine has a parallel kinematic mechanism including an end effecter and a parallel link mechanism. A numerical control device controls a position and orientation of the end effecter based on kinematics of the parallel kinematic mechanism. A pos... | 06/10/2008 |
| 7355585 | Input device and information processing apparatus with such input device and cursor display control method An input device may be used with the information processing apparatus and the like, and provides an improved ease of operation in moving the cursor on the display screen. The input device includes a set of cursor keys 1 that, when activated, cause the ... | 04/08/2008 |
| 7286678 | Hearing device with peripheral identification units Hearing aid fitted with a central processing unit (1) having peripherals (3E, 3A) connected to its input and output. Each peripheral includes an identification unit (5) having an output connected to a first input of a comparator (9... | 10/23/2007 |
| 7283635 | Headset with memory A headset having a built-in memory to store parameter settings relating to headset performance characteristics such as headphone(s) and/or microphone performance characteristics. The performance characteristics can be measured during headset production and stored in... | 10/16/2007 |
| 7272160 | Single-frequency Brillouin fiber ring laser with extremely narrow linewidth A single-frequency Brillouin fiber ring laser with extremely narrow linewidth comprises a single-frequency narrow-linewidth rapid-tunable pump laser, a temperature-controlled acoustically-damped package for Brillouin fiber ring laser cavity, and an auto-tracking fee... | 09/18/2007 |
| 7249511 | Method of detecting resonant frequency, method of selecting resonance frequency, and device for detecting resonant frequency sensor A device for detecting a resonant frequency comprises a sound source, a switch, a mixer, and a sound meter. The switch and mixer are capable of switching between a first state in which the switch and mixer output a measurement signal and a second state in which the ... | 07/31/2007 |
| 7248985 | Acoustic signature testing for electronic, electromechanical, and mechanical equipment A method for testing a unit is described where the unit includes one or more of electrical, electronic, mechanical, and electromechanical components. The described method includes applying at least one stimulus to the unit, receiving sound emissions from the unit, c... | 07/24/2007 |
| 7210329 | Method for determining temporal and amplitude threshold values of gates during ultrasound testing of spot welding joints The invention relates to a method for determining the threshold value of screens which enable an evaluation of a sound coupling during the ultrasound testing of a series of spot welding joints of a selected type. Initially, a geometrical minimal thickness dMin is es... | 05/01/2007 |
| 7171005 | P.A. system installation method The invention concerns a method for transmitting in an area (100) information items in the form of sound waves representing a signal X(t), through a loudspeaker enclosure (2), said method comprising a step of setting up a public address system which co... | 01/30/2007 |
| 7124621 | Acoustic flowmeter calibration method An acoustic flowmeter calibration method and sampling system address a variation in acoustic transducer delay time with increasing temperature. In one aspect, calibration of the path length between the sending and receiving transducers and calibration of the transdu... | 10/24/2006 |
| 7123731 | System and method for optimization of three-dimensional audio The invention provides a system for optimization of three-dimensional audio listening having a media player and a multiplicity of speakers disposed within a listening space, the system including a portable sensor having a multiplicity of transducers strategically ar... | 10/17/2006 |
| 7093963 | Light axis adjusting apparatus for vehicle headlamp A light axis adjusting apparatus for a vehicle headlamp has an inclination sensor which receives at least two ultrasonic signals transmitted toward a road surface in a vehicle width direction, and detects the inclined state of a vehicle relative to the road surface ... | 08/22/2006 |
| 7075477 | Radar A radar includes a transmission signal processing system, a reception signal processing system, an auxiliary signal processing system, a transmission-signal input unit, and a search determination unit. The transmission signal processing system transmits a transmissi... | 07/11/2006 |
| 7010981 | Inverse method for estimating the wave propagation parameters of two dissimilar wave types A method is provided to distinguish two blended but different waves in a structure, such as compressional and shear waves, by measuring their corresponding wavenumbers and wave speeds. Other characteristics of the two waves may also be measured such as the propagati... | 03/14/2006 |
| 6990435 | Tactile sensing method and system A system for detecting tactile information includes strain-gauge touch sensors and a controller. Based on the sum output from each of tough-sensor sensor units, an analyzer in the controller calculates touch force Fi(t) at each measurement point. An autom... | 01/24/2006 |
| 6934651 | Method for synchronizing signals acquired from unsynchronized sensors A method synchronizes signals from unsynchronized sensors spatially dispersed in an environment. Each sensor acquires an unsynchronized signal from the environment. An identical timing signal is received in each sensor. Frequencies of the timing signal are substanti... | 08/23/2005 |
| 6782332 | Ultrasound transducer temperature compensation methods, apparatus and programs Method, apparatus and computer programs are described for compensating for the effect of temperature on the sensitivity of electrostatic ultrasound (US) transducers, particularly as used in an automotive occupancy sensing (AOS) systems for sensing the nature or type... | 08/24/2004 |
| 6698276 | Method and apparatus for determining particle size distribution by acoustic speckle The invention provides a method and an apparatus for measuring the size, concentration and size distribution of particles in a fluid by determining the characteristics of an acoustic speckle signal of the particles and relating these characteristics to th... | 03/02/2004 |
| 6671643 | Method for testing a hearing aid, and hearing aid operable according to the method In order to test a hearing aid having at least one microphone, one signal processing unit and one sound transducer, a sound channel is produced between the microphone and the sound transducer. The electrical signal path in the hearing aid is interrupted, ... | 12/30/2003 |
| 6644119 | Noninvasive characterization of a flowing multiphase fluid using ultrasonic interferometry An apparatus for noninvasively monitoring the flow and/or the composition of a flowing liquid using ultrasound is described. The position of the resonance peaks for a fluid excited by a swept-frequency ultrasonic signal have been found to change frequency... | 11/11/2003 |
| 6560548 | Device and method for determination of physical parameters for a two-phase mix by propagation of an acoustic wave in the continuous phase of the two-phase mix A device measures the propagation time for an acoustic wave in a continuous phase of a two-phase mix (28) comprising the continuous phase and a dispersed phase forming droplets (40) in the continuous phase. The device comprises an electro-acoustic transdu... | 05/06/2003 |
| 6498996 | Vibration compensation for sensors Vibration induced errors in sensors are predicted based on a measurement of vibration power spectra. Accelerometer samples are used to estimate vibration power spectral densities. A calibration procedure using suitable vibration stimulus provides the abil... | 12/24/2002 |
| 6430728 | Acoustic 3D analysis of circuit structures According to an example embodiment, the present invention is directed to a system and method for analyzing an integrated circuit. A laser is directed to the back side of an integrated circuit and causes local heating, which generates acoustic energy in th... | 08/06/2002 |
| 6421811 | Defect detection via acoustic analysis According to an example embodiment of the present invention, a defect detection approach involves detecting the existence of defects in an integrated circuit as a function of acoustic energy. Acoustic energy propagating through the device is detected. A p... | 07/16/2002 |
| 6356846 | System and method of reducing motion-induced noise in the optical detection of an ultrasound signal in a moving body of material The present invention provides a system and method to reduce motion-induced noise in the detection of ultrasonic signals in a moving sheet or body of material. An ultrasonic signal is generated in a sheet of material and a detection laser beam is moved al... | 03/12/2002 |
| 6182510 | Apparatus and method for characterizing semiconductor wafers during processing An apparatus and method are disclosed for characterizing semiconductor wafers or other test objects that can support acoustic waves. Source and receiving transducers are configured in various arrangements to respectively excite and detect acoustic waves (... | 02/06/2001 |
| 5943641 | Method and device for recovering a wanted acoustic signal from a composite acoustic signal including interference components The device for extracting a useful acoustic signal from a composite acoustic signal including nuisance components includes: first sensor component for picking up the composite acoustic signal; second sensor component for picking up, in real-time, the refe... | 08/24/1999 |
| 5572443 | Acoustic characteristic correction device An acoustic characteristic correction device includes a section for setting a desired characteristic of a response characteristic in a reproduction system including a sound field, a section for outputting information of a measured characteristic of the re... | 11/05/1996 |
| 5274573 | Ultrasonic web edge detection method and apparatus The edge of a web of material is inserted in a gap in a detector head between an ultrasonic blockage transmitter and an ultrasonic blockage receiver such that the magnitude of the pulse of sound from the transmitter that is received by the receiver is rel... | 12/28/1993 |
| 5224170 | Time domain compensation for transducer mismatch A two channel real time octave analyzer is equipped with an adaptive time domain phase compensation filter whose poles and zeros are programmably selected to counteract phase error associated with any given pair of microphones. Precise matching of microph... | 06/29/1993 |
| 5072414 | Ultrasonic web edge detection method and apparatus The edge of a web of material is inserted into a gap in a detector head between an ultrasonic blockage transmitter and an ultrasonic blockage receiver such that the magnitude of the pulse of sound from the transmitter that is received by the receiver is r... | 12/10/1991 |
| 4992966 | Calibration device and auditory prosthesis having calibration information A calibration device for an auditory prosthesis, such as a hearing aid, and an auditory prosthesis which contains such a calibration device. The calibration device comprises memory in which is stored information which is characteristic of information intr... | 02/12/1991 |
| 4970656 | Analog drive for ultrasonic probe with tunable phase angle The system uses a tunable inductor in series with the piezoelectric crystal excitation transducer in the probe which has a flux modulation coil. The bias current through this flux modulation coil is controlled by the system. It is controlled such that the... | 11/13/1990 |
| 4942614 | Calibration of ultrasonic transducers An ultrasonic test set is calibrated in terms of its frequency characterization by establishing a response trace on a monitor screen of the test set when the probe of the test set is applied to a standard test article, a digitizing camera is arranged for ... | 07/17/1990 |
| 4831565 | Process control equipment for adverse environments Microprocessor controlled industrial monitoring equipment uses a separate portable keypad which can be applied to a sealed casing containing a control unit to transmit commands and calibration to the equipment, which normally operates and provides a displ... | 05/16/1989 |
| 4675835 | Device for compensating reproduction errors in an electroacoustic transducer In order to compensate reproduction errors in electroacoustic transducers (W), for example electrodynamic loud-speakers, microphones and pickup systems, computer circuits are used. In a digital computer circuit, the electrical input signals (U1... | 06/23/1987 |
| 4630226 | Ultra-sonic distance sensor system and method with correction feature for sensor value An ultra-sonic distance sensor system includes means for measuring the elapsed time between transmission of ultra-sonic waves and receipt of the return wave reflected by an object which reflects ultra-sonic waves and the distance to which is to be measure... | 12/16/1986 |
