Acoustic Patents (Class 708/815)
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Patent number: 10924704Abstract: A display apparatus includes a display panel, a back cover accommodating the display panel, and a sound output unit including at least one sound output module disposed to overlap the display panel. The at least one sound output module includes a support plate including an uneven surface and a piezoelectric element attached on the uneven surface of the support plate and has a shape corresponding to the uneven surface of the support plate. Accordingly, a sound having a straight characteristic within an audible frequency domain may be output, thereby enhancing a sense of reality and an immersion of a viewer watching an image displayed by the display apparatus.Type: GrantFiled: December 16, 2019Date of Patent: February 16, 2021Assignee: LG Display Co., Ltd.Inventors: Sung-Eui Shin, Chiwan Kim, Taeheon Kim, YongWoo Lee, Kyungyeol Ryu, YuSeon Kho
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Patent number: 10542235Abstract: A display apparatus includes a display panel, a back cover accommodating the display panel, and a sound output unit including at least one sound output module disposed to overlap the display panel. The at least one sound output module includes a support plate including an uneven surface and a piezoelectric element attached on the uneven surface of the support plate and has a shape corresponding to the uneven surface of the support plate. Accordingly, a sound having a straight characteristic within an audible frequency domain may be output, thereby enhancing a sense of reality and an immersion of a viewer watching an image displayed by the display apparatus.Type: GrantFiled: May 4, 2018Date of Patent: January 21, 2020Assignee: LG Display Co., Ltd.Inventors: Sung-Eui Shin, Chiwan Kim, Taeheon Kim, YongWoo Lee, Kyungyeol Ryu, YuSeon Kho
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Patent number: 9894185Abstract: A system for condition-based application logic shifting between a client and a server uses a stub generator, a function processor, and a client stub. Both the stub generator and the function processor are located in the server and the client stub is generated by the stub generator. Normally an application function's execution occurs on the client. The client stub determines whether or not a client shift condition (CSC) exists for shifting an application function's execution from the client to the server when the CSC does exist, and shifting the application's function back to the client when it is determined that the CSC does not exist (or no longer exists).Type: GrantFiled: December 16, 2014Date of Patent: February 13, 2018Assignee: Software AGInventors: Vittorio De Angelis, Rocco De Angelis
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Patent number: 8977374Abstract: Described herein are methods and system for analyzing music audio. An example method includes obtaining a music audio track, calculating acoustic features of the music audio track, calculating geometric features of the music audio track in view of the acoustic features, and determining a mood of the music audio track in view of the geometric features.Type: GrantFiled: September 12, 2012Date of Patent: March 10, 2015Assignee: Google Inc.Inventors: Douglas Eck, Jay Yagnik
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Patent number: 8954173Abstract: A method and apparatus for profiling and identifying the source of a signal is provided. A first method includes receiving a signal produced by a known source and creating a matrix of wavelet coefficients corresponding to a wavelet transform of the signal. The method also includes profiling the signal according to an output of a wavelet transform utilizing a particular base function and a particular scale set. A second method includes performing a wavelet transform having a particular profile on a received signal and determining the presence of a particular signal-producing entity as a function of wavelet coefficients exceeding a threshold. An apparatus includes a receiver configured to receive a signal and a processor coupled to the receiver, such that the processor is configured to perform wavelet transforms on the signals. A database is coupled to the processor and configured to store wavelet transform profiles.Type: GrantFiled: September 3, 2008Date of Patent: February 10, 2015Inventor: Mark Fischer
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Patent number: 8260442Abstract: A control system is provided for controlling a transducer array. The control system includes a plurality of sparse filters and integrators. The control system can be used to separate signals from a plurality of sources or to generate complex signal patterns that combine and map to different spatial regions.Type: GrantFiled: April 24, 2009Date of Patent: September 4, 2012Assignee: Tannoy LimitedInventors: Knud Bank Christensen, Klas Âke Dalbjörn
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Patent number: 7697195Abstract: We disclose acousto-optic modulators that include: (a) an optical element configured to receive an input optical beam that propagates along a first direction; and (b) a transducer extending along the first direction and positioned on one or more surfaces of the optical element, the transducer having a transducer material positioned between two electrodes configured to apply a potential difference across the transducer to cause the transducer to generate an acoustic waveform propagating in a second direction in the optical element, and the input optical beam undergoing diffraction in a region of the optical element that includes the acoustic waveform.Type: GrantFiled: May 25, 2007Date of Patent: April 13, 2010Assignee: Zygo CorporationInventor: Henry A. Hill
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Patent number: 7475014Abstract: A method models trajectories of a signal source. Training signals generated by a signal source moving along known trajectories are acquired by each sensor in an array of sensors. Phase differences between all unique pairs of the training signals are determined. A wrapped-phase hidden Markov model is constructed from the phase differences. The wrapped-phase hidden Markov model includes multiple Gaussian distributions to model the known trajectories of the signal source.Type: GrantFiled: July 25, 2005Date of Patent: January 6, 2009Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Paris Smaragdis, Petros Boufounos
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Patent number: 6629121Abstract: A surface acoustic wave-matched filter is disclosed which comprises: an input transducer provided on a piezoelectric substrate surface; a first output transducer, that is, a forward output transducer encoded in correspondence to a pseudo-noise code sequence for spectrum spreading and provided on the substrate surface; and a second output transducer, that is, a backward output transducer encoded in correspondence to the pseudo-noise sequence code and provided on the substrate surface at the succeeding to the forward output transducer by the length of the pseudo-noise code sequence as viewed from the input transducer. With the use of the surface acoustic wave-matched filter, it is possible to realize a differential detector for demodulating spread spectrum signals.Type: GrantFiled: October 7, 1999Date of Patent: September 30, 2003Inventors: Hiroyasu Ishikawa, Hideyuki Shinonaga
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Patent number: 6047306Abstract: A surface acoustic wave signal processing apparatus for processing first and second high-frequency signals having frequencies f.sub.1 and f.sub.2 respectively, which comprises: first and second surface acoustic wave delay elements for receiving the first and second high-frequency signals respectively and independently of each other, the delay elements being formed as surface acoustic wave excitation and reception transducers on a piezoelectric substrate so that a phase delay .phi..sub.1 with respect to the frequency f.sub.1 is substantially equal to a phase delay .phi..sub.2 with respect to the frequency f.sub.2 (that is, .phi..sub.1 .apprxeq..phi..sub.2); and a mixer for mixing first and second high-frequency output signals of the first and second surface acoustic wave delay elements so that a signal having a frequency .vertline.f.sub.1 -f.sub.2 .vertline. which is a difference between the two frequencies f.sub.1 and f.sub.2 is taken out as an output signal of the mixer.Type: GrantFiled: November 26, 1997Date of Patent: April 4, 2000Assignee: Hitachi, Ltd.Inventors: Mitsutaka Hikita, Chisaki Takubo, Nobuhiko Shibagaki, Kazuyuki Sakiyama