Patents by Inventor Kenichi Terai
Kenichi Terai 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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Patent number: 11954850Abstract: A medical information processing system according to an embodiment includes processing circuitry and a display. On the basis of one of the type of at least one abnormality detection algorithm to which a medical image related to an examined subject is to be input and information relevant to an abnormality detected by inputting the medical image to the abnormality detection algorithm, the processing circuitry judges whether or not urgency is present in a disorder related to the abnormality. When it is determined that the urgency is present, the display displays, in an examination list of examination orders, assessment information related to assessing the abnormality and urgency information indicating the urgency so as to be positioned adjacent to any of the examination orders related to the abnormality.Type: GrantFiled: February 11, 2021Date of Patent: April 9, 2024Assignee: CANON MEDICAL SYSTEMS CORPORATIONInventors: Koichi Terai, Hiroki Saito, Kenichi Usui, Yosuke Okubo, Hirobumi Nonaka
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Patent number: 7751914Abstract: A signal processing apparatus includes an input attribute determination section for determining an input attribute representing at least one of a type of an audio codec, a sampling frequency and a number of channels of an input signal; and an input signal processing section for processing the input signal. The input signal processing section determines whether the input attribute has been changed based on a determination result provided by the input attribute determination section; and when a calculation remainder generated in the input signal processing section by the change in the input attribute, the input signal processing section assigns at least apart of the calculation remainder to processing of the input signal.Type: GrantFiled: August 29, 2005Date of Patent: July 6, 2010Assignee: Panasonic CorporationInventors: Hiroyuki Hashimoto, Kenichi Terai, Isao Kakuhari
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Patent number: 7680286Abstract: A wide frequency range signal from a test sound source is reproduced successively by a plurality of speakers, and the reproduced sound is detected by a plurality of microphones, after which the frequency characteristics are obtained at FFTs, while obtaining the frequency characteristics of the wide frequency range signal at an FFT. A high frequency range level is normalized with a low frequency range level, and a determination section compares the normalized value with a reference value stored in a reference value storage section to determine the number and positions of people in the sound field. The transfer functions between the speakers and the microphones are calculated at transfer function calculators, and impulse responses are obtained at IFFTs, after which a reverberation time calculator calculates the reverberation time based on the impulse responses. An audio signal is adjusted based on the results.Type: GrantFiled: May 25, 2004Date of Patent: March 16, 2010Assignee: Panasonic CorporationInventors: Hiroyuki Hashimoto, Kenichi Terai, Koichi Hashimoto, Kazue Satoh
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Patent number: 7664272Abstract: A sound image control device filters transfer functions H3 and H1 indicating transfer characteristics of a sound from an acoustic transducer (8) to entrances to respective ear canals (1) and (2) as well as filtering transfer functions H4 and H2 from an acoustic transducer (9) to the entrances to the respective ear canals (1) and (2) and generates second transfer functions H6 and H5 indicating transfer characteristics of a sound to the entrances to the respective ear canals (1) and (2) from a target sound source (11) at a location different from the sound sources, the sound image control device being equipped with correction filters (13) and (14) that (i) store characteristic functions E1 and E2 for performing filtering operations on the first transfer functions H1, H2, H3, and H4 and (ii) generate the second transfer functions H5 and H6 from the first transfer functions H1, H2, H3, and H4 using such characteristic functions E1 and E2.Type: GrantFiled: September 2, 2004Date of Patent: February 16, 2010Assignee: Panasonic CorporationInventors: Kenichi Terai, Kazutaka Abe, Isao Kakuhari, Yasuhito Watanabe, Gempo Ito
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Patent number: 7386139Abstract: A sound image control system which is able to concurrently perform sound image localization control for two persons is provided. The sound image control system controls a sound image localization position by reproducing an audio signal from a plurality of loudspeakers. The sound image control system includes at least four loudspeakers for reproducing the audio signal and a signal processing section. The signal processing section sets four points corresponding to both ears of two listeners as control points, and performs signal processing for the audio signal input into the plurality of loudspeakers so that two target sound source positions indicating sound image localization positions of the respective two listeners are set in the same direction with respect to the two listeners. The two target sound source positions are set so as to satisfy the following condition, T1=T2?T3<T4.Type: GrantFiled: June 5, 2003Date of Patent: June 10, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Hashimoto, Kenichi Terai, Isao Kakuhari, Takahisa Hachuda
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Publication number: 20070274528Abstract: A path of a virtual sound source moving through a virtual sound field space and move start and end conditions are input and an effective acoustic signal is generated. An acoustic processing device includes a sound source path input section 12 for inputting path data of a virtual sound source, a sound source position calculation section 13 for successively calculating the move position data of the virtual sound source in response to the path data, a sound source distance calculation section 14 for calculating the distance data between a listener and the virtual sound source, a distance coefficient storage section 15 previously storing coefficient data responsive to the distance between the listening position and the virtual sound source, and an effect sound generation section 17 for selecting any coefficient data in response to the distance data between the listening position and the virtual sound source and generating an effect sound signal obtained about an input sound source signal.Type: ApplicationFiled: September 2, 2005Publication date: November 29, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Shinji Nakamoto, Kenichi Terai, Kouji Sawamura, Kazuyuki Tanaka, Yukihiro Fujita
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Patent number: 7254240Abstract: An active noise control system is capable of canceling out noise in the passenger compartment of a vehicle based on low-frequency road noise. The active noise control system has a feed-forward control unit for being supplied with reference signals highly correlated to noise from a noise source and generating a noise cancellation signal which is out of phase to noise in the passenger compartment of the vehicle, and a canceling sound generating unit disposed in the passenger compartment for generating a noise canceling sound in response to the noise cancellation signal from said feed-forward control unit. The active noise control system also has microphones for generating reference signals which are positioned respectively near the base of the front seat, near the center of a roof, and within a trunk compartment, i.e., respectively at vibrational antinodes of a primary or secondary acoustic normal mode of the passenger compartment in the longitudinal direction thereof.Type: GrantFiled: April 20, 2006Date of Patent: August 7, 2007Assignees: Honda Giken Kogyo Kabushiki Kaisha, Matsushita Electric Industrial Co., Ltd.Inventors: Toshio Inoue, Hisashi Sano, Akira Takahashi, Kenichi Terai, Hiroyuki Hashimoto, Isao Kakuhari
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Patent number: 7191022Abstract: A sound-amplification apparatus comprises: an acoustic signal source for outputting an acoustic signal; an amplified sound source for receiving the acoustic signal from the acoustic signal source and radiating an amplified sound; a control sound source provided in a vicinity of the amplified sound source for radiating a control sound; and signal processing means for producing a control sound signal by controlling at least one of an amplitude and a phase of the acoustic signal from the acoustic signal source so that an acoustic space having a desired directionality is formed by interference between the amplified sound and the control sound, and providing the control sound signal to the control sound source.Type: GrantFiled: October 2, 1998Date of Patent: March 13, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Isao Kakuhari, Kenichi Terai, Hiroyuki Hashimoto
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Patent number: 7158644Abstract: A first rectifying net, a rectifying grid and a second rectifying net are attached, as a rectifying part upstream of a duct through which air for cooling flows. A noise detection microphone detects noise within the duct. An error detection microphone is placed in the downstream side of the noise to detect error noise. An arithmetic circuit inputs a noise signal of the noise detection microphone, carries out an arithmetic of a transfer function so that an output signal of the error detection microphone becomes minimum, and outputs a control signal to a control sound source. The control sound source radiates a control sound having approximately the same sound pressure as and an opposite phase of the noise within the duct. Thus, the coherence between the noise in the upstream and downstream parts increases, thereby enhancing a sound-muffling effect.Type: GrantFiled: December 10, 2001Date of Patent: January 2, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Isao Kakuhari, Kenichi Terai, Hiroyuki Hashimoto
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Publication number: 20060274901Abstract: The sound image control device filters transfer functions H3 and H1 indicating transfer characteristics of a sound from an acoustic transducer (8) to entrances to respective ear canals (1) and (2) as well as filtering transfer functions H4 and H2 from an acoustic transducer (9) to the entrances to the respective ear canals (1) and (2) and generates second transfer functions H6 and H5 indicating transfer characteristics of a sound to the entrances to the respective ear canals (1) and (2) from a target sound source (11) at a location different from the sound sources, the sound image control device being equipped with correction filters (13) and (14) that (i) store characteristic functions E1 and E2 for performing filtering operations on the first transfer functions H1, H2, H3, and H4 and (ii) generate the second transfer functions H5 and H6 from the first transfer functions H1, H2, H3, and H4 using such characteristic functions E1 and E2.Type: ApplicationFiled: September 2, 2004Publication date: December 7, 2006Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Kenichi Terai, Kazutaka Abe, Isao Kakuhari, Yasuhito Watanabe, Gempo Ito
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Patent number: 7139402Abstract: A sound reproduction device of the present invention includes: a first loudspeaker; a second loudspeaker; a first loudspeaker drive section for driving the first and second loudspeakers, the first loudspeaker drive section drives the first and second loudspeakers at substantially the same phase in a first frequency band, and the first loudspeaker drive section drives the first and second loudspeakers at substantially inverse phase and substantially different amplitude levels in a second frequency band higher than the first frequency band.Type: GrantFiled: July 29, 2002Date of Patent: November 21, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazutaka Abe, Kenichi Terai
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Publication number: 20060188107Abstract: An active noise control system is capable of canceling out noise in the passenger compartment of a vehicle based on low-frequency road noise. The active noise control system has a feed-forward control unit for being supplied with reference signals highly correlated to noise from a noise source and generating a noise cancellation signal which is out of phase to noise in the passenger compartment of the vehicle, and a canceling sound generating unit disposed in the passenger compartment for generating a noise canceling sound in response to the noise cancellation signal from said feed-forward control unit. The active noise control system also has microphones for generating reference signals which are positioned respectively near the base of the front seat, near the center of a roof, and within a trunk compartment, i.e., respectively at vibrational antinodes of a primary or secondary acoustic normal mode of the passenger compartment in the longitudinal direction thereof.Type: ApplicationFiled: April 20, 2006Publication date: August 24, 2006Inventors: Toshio Inoue, Hisashi Sano, Akira Takahashi, Kenichi Terai, Hiroyuki Hashimoto, Isao Kakuhari
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Patent number: 7062049Abstract: An active noise control system is capable of canceling out noise in the passenger compartment of a vehicle based on low-frequency road noise. The active noise control system has a feed-forward control unit for being supplied with reference signals highly correlated to noise from a noise source and generating a noise cancellation signal which is out of phase to noise in the passenger compartment of the vehicle, and a canceling sound generating unit disposed in the passenger compartment for generating a noise canceling sound in response to the noise cancellation signal from said feed-forward control unit. The active noise control system also has microphones for generating reference signals which are positioned respectively near the base of the front seat, near the center of a roof, and within a trunk compartment, i.e., respectively at vibrational antinodes of a primary or secondary acoustic normal mode of the passenger compartment in the longitudinal direction thereof.Type: GrantFiled: March 9, 2000Date of Patent: June 13, 2006Assignees: Honda Giken Kogyo Kabushiki Kaisha, Matsushita Electric Industrial Co., Ltd.Inventors: Toshio Inoue, Hisashi Sano, Akira Takahashi, Kenichi Terai, Hiroyuki Hashimoto, Isao Kakuhari
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Patent number: 7054400Abstract: A digital AV signal processing apparatus includes a buffer for storing digital data input to the digital AV signal processing apparatus, and outputting the digital data as output digital data, a D/A converter for converting the output digital data to analog data, a voltage-controlled oscillator for generating a clock signal to control a conversion rate of the D/A converter, and a voltage-controlled oscillator controller for detecting a data amount of the digital data stored in the buffer, and controlling a frequency of the clock signal based on a deviation in the detected data amount from a first predetermined value and a time integral of the deviation value.Type: GrantFiled: October 10, 2001Date of Patent: May 30, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenichi Terai, Hiroyuki Hashimoto, Hiroyuki Kotani
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Patent number: 6990207Abstract: An active noise control system for reducing road noise of low frequency generated inside the cabin of a vehicle is provided. The active noise control system includes a noise detector, a signal generator for processing the input noise signal to generate a signal for producing noise canceling waves, a limiting amplifier having a specified threshold value for variably amplifying the processed signal so that the amplitude of output signal will not exceed the threshold value, and an electrical acoustic converter for producing noise canceling acoustic waves in accordance with the output signal.Type: GrantFiled: May 24, 2001Date of Patent: January 24, 2006Assignees: Matsushita Electric Industrial Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Yoshio Nakamura, Toshihiko Ohashi, Kenichi Terai, Hiroyuki Hashimoto, Isao Kakuhari, Hisashi Sano, Toshio Inoue, Akira Takahashi, Tsuyoshi Yamashita
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Publication number: 20060009986Abstract: A signal processing apparatus includes an input attribute determination section for determining an input attribute representing at least one of a type of an audio codec, a sampling frequency and a number of channels of an input signal; and an input signal processing section for processing the input signal. The input signal processing section determines whether the input attribute has been changed based on a determination result provided by the input attribute determination section; and when a calculation remainder generated in the input signal processing section by the change in the input attribute, the input signal processing section assigns at least apart of the calculation remainder to processing of the input signal.Type: ApplicationFiled: August 29, 2005Publication date: January 12, 2006Inventors: Hiroyuki Hashimoto, Kenichi Terai, Isao Kakuhari
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Patent number: 6961632Abstract: A signal processing apparatus includes an input attribute determination section for determining an input attribute representing at least one of a type of an audio codec, a sampling frequency and a number of channels of an input signal; and an input signal processing section for processing the input signal. The input signal processing section determines whether the input attribute has been changed based on a determination result provided by the input attribute determination section; and when a calculation remainder generated in the input signal processing section by the change in the input attribute, the input signal processing section assigns at least a part of the calculation remainder to processing of the input signal.Type: GrantFiled: September 26, 2001Date of Patent: November 1, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Hashimoto, Kenichi Terai, Isao Kakuhari
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Patent number: 6944309Abstract: A headphone system includes a headphone; and a signal processing circuit for outputting an acoustic signal to the headphone. The headphone includes a first speaker and a third speaker for a right ear of a listener, a second speaker and a fourth speaker for a left ear of the listener, and a support for supporting the first through fourth speakers so that the first and second speakers are located forward with respect to a vertical plane including a straight line connecting the hole of the right ear and the hole of the left ear of the listener, the second and fourth speakers are located rearward with respect to the vertical plane, and the first through fourth speakers are out of contact with the right ear and the left ear of the listener.Type: GrantFiled: February 2, 2001Date of Patent: September 13, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kenichi Terai, Hiroyuki Hashimoto, Isao Kakuhari, Hiroshi Hamanaka
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Patent number: 6891954Abstract: In an active noise control apparatus in which an audio signal and a noise control signal are mixed to thereby sound a loudspeaker inside a motor vehicle, a general-purpose audio head unit cannot conventionally be freely changed for the one already mounted on the motor vehicle. As a solution, an active noise control unit is provided with a buffer amplifier and a mixer. An audio signal amplified by a power amplifier in an audio head unit is adjusted in level by the buffer amplifier such that a level of an audio signal outputted after amplification by the first amplifier becomes substantially equal to a level of the audio signal outputted from the audio head unit. Then, at the mixer, a noise control signal outputted from an active noise controller is added to an audio signal outputted from the buffer amplifier. Therefore, any audio head unit can be freely changed for the one already mounted on the vehicle as long as the audio head unit contains therein a power amplifier.Type: GrantFiled: March 29, 2001Date of Patent: May 10, 2005Assignees: Honda Giken Kogyo Kabushiki Kaisha, Matsushita Denkisangyo Kabushiki KaishaInventors: Akira Takahashi, Toshio Inoue, Tsuyoshi Yamashita, Hisashi Sano, Kenichi Terai, Hiroyuki Hashimoto, Isao Kakuhari, Yoshio Nakamura
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Publication number: 20040240676Abstract: A wide frequency range signal from a test sound source 1 is reproduced successively by a plurality of speakers 101 to 104, and the reproduced sound is detected by a plurality of microphones 111 and 112, after which the frequency characteristics thereof are obtained at FFTs 4b and 4c, while obtaining the frequency characteristics of the wide frequency range signal at an FFT 4a. A high frequency range level is normalized with a low frequency range level, and a determination section 8 compares the normalized value with a reference value stored in a reference value storage section 9 to determine the number and positions of people in the sound field. At the same time, the transfer functions between the speakers and the microphones are calculated at transfer function calculators 10a and 10b, and impulse responses are obtained at IFFTs 12a and 12b, after which a reverberation time calculator 13 calculates the reverberation time based on the impulse responses.Type: ApplicationFiled: May 25, 2004Publication date: December 2, 2004Inventors: Hiroyuki Hashimoto, Kenichi Terai, Koichi Hashimoto, Kazue Satoh