Patents by Inventor Keisuke Toyama

Keisuke Toyama 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).

  • Patent number: 9762193
    Abstract: A sound processing apparatus includes a sound determination portion operable to determine whether an input sound includes a first sound emitted from a particular source based on location information of the source, a sound separation portion operable to separate the input sound into the first sound and a second sound emitted from a source different from the particular source if the sound determination portion determines that the input sound includes the first sound, and a sound mixing portion operable to mix the first sound and the second sound separated by the sound separation portion at a prescribed volume ratio.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: September 12, 2017
    Assignee: SONY CORPORATION
    Inventors: Ryuichi Namba, Mototsugu Abe, Akira Inoue, Keisuke Toyama, Shusuke Takahashi, Masayuki Nishiguchi
  • Patent number: 9002489
    Abstract: A signal processing apparatus includes an absolute value unit configured to convert an audio signal into absolute values, a representative value calculation unit configured to calculate representative values of consecutive sample values included in blocks of the audio signal which has been converted into the absolute values using at least maximum sample values among values of the samples included in the blocks for individual blocks, an average value calculation unit configured to determine a section which includes a predetermined number of consecutive blocks as a frame and calculate a maximum value of the representative values of the blocks included in the frame and an average value of the representative values of the blocks included in the frame, and a detector configured to detect click noise in the frame on the basis of a ratio of the maximum value to the average value.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: April 7, 2015
    Assignee: Sony Corporation
    Inventors: Keisuke Toyama, Mototsugu Abe
  • Publication number: 20140177853
    Abstract: There is provided a sound processing device including a background noise estimation unit configured to estimate a background noise of an input signal, a noise suppression unit configured to suppress the background noise of the input signal based on a result obtained by estimating the background noise, a feature quantity calculation unit configured to calculate a feature quantity based on the input signal in which the background noise is suppressed, and a consonant detection unit configured to detect a consonant from the input signal based on the feature quantity.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 26, 2014
    Applicant: Sony Corporation
    Inventor: Keisuke Toyama
  • Patent number: 8713563
    Abstract: A data processor includes: a central processing unit (CPU), in which a plurality of virtual machines (101), each running an application program under controls of different operating systems, and a virtual machine manager (190) for controlling the plurality of virtual machines are selectively arranged according to information set in mode registers (140, 150, 151); and a resource access management module (110) for managing access to hardware resource available for the plurality of virtual machines. The resource access management module accepts, as inputs, the information set in the mode registers and access control information of the central processing unit to the hardware resource, compares the information thus input with information set in a control register, and controls whether or not to permit access to the hardware resource in response to the access control information.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: April 29, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Yuki Kondoh, Takashi Matsumoto, Keisuke Toyama, Toru Nojiri
  • Patent number: 8680386
    Abstract: A signal processing device that identifies a piece of music of an input signal by comparing the input signal with a plurality of reference signals including only a piece of music includes a weight distribution generating section that generates a weight distribution corresponding to a likeness to music in regions of the input signal transformed into a time-frequency domain, and a similarity calculating section that calculates degrees of similarity between a feature quantity in the regions of the input signal transformed into the time-frequency domain and feature quantities in the regions of the reference signals transformed into the time-frequency domain on the basis of the weighting based on the weight distribution.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: March 25, 2014
    Assignee: Sony Corporation
    Inventors: Takashi Shibuya, Keisuke Toyama, Mototsugu Abe
  • Patent number: 8521522
    Abstract: There is provided an audio coding device which appropriately sets the quantization bit number by a small calculation amount in each stage when coding an input audio signal by performing multi-stage normalization/quantization. A quantization information calculation section determines total quantization information idwl0, based on normalization information idsf, and allocates the total quantization information idwl0 for quantization information idwl1 and quantization information idwl2. At this time, the quantization information calculation section limits the quantization information idwl1 by a limiter lim1, and allocates the total quantization information idwl0 for quantization information idwl1. If the quantization information idwl1 exceeds the limiter lim1, the excess is allocated for the quantization information idwl2. A first normalization section and a first quantization section normalizes and quantizes a frequency spectrum mdspec1 in the first stage.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: August 27, 2013
    Assignee: Sony Corporation
    Inventors: Yuuki Matsumura, Shiro Suzuki, Keisuke Toyama, Mitsuyuki Hatanaka, Yuhki Mitsufuji
  • Patent number: 8422695
    Abstract: A sound processing apparatus includes a sound determination portion operable to determine whether an input sound includes a first sound emitted from a particular source based on location information of the source, a sound separation portion operable to separate the input sound into the first sound and a second sound emitted from a source different from the particular source if the sound determination portion determines that the input sound includes the first sound, and a sound mixing portion operable to mix the first sound and the second sound separated by the sound separation portion at a prescribed volume ratio.
    Type: Grant
    Filed: February 13, 2008
    Date of Patent: April 16, 2013
    Assignee: Sony Corporation
    Inventors: Ryuichi Namba, Mototsugu Abe, Akira Inoue, Keisuke Toyama, Shusuke Takahashi, Masayuki Nishiguchi
  • Publication number: 20120103166
    Abstract: A signal processing device that identifies a piece of music of an input signal by comparing the input signal with a plurality of reference signals including only a piece of music includes a weight distribution generating section that generates a weight distribution corresponding to a likeness to music in regions of the input signal transformed into a time-frequency domain, and a similarity calculating section that calculates degrees of similarity between a feature quantity in the regions of the input signal transformed into the time-frequency domain and feature quantities in the regions of the reference signals transformed into the time-frequency domain on the basis of the weighting based on the weight distribution.
    Type: Application
    Filed: October 20, 2011
    Publication date: May 3, 2012
    Inventors: Takashi SHIBUYA, Keisuke Toyama, Mototsugu Abe
  • Publication number: 20110255710
    Abstract: A signal processing apparatus includes an absolute value unit configured to convert an audio signal into absolute values, a representative value calculation unit configured to calculate representative values of consecutive sample values included in blocks of the audio signal which has been converted into the absolute values using at least maximum sample values among values of the samples included in the blocks for individual blocks, an average value calculation unit configured to determine a section which includes a predetermined number of consecutive blocks as a frame and calculate a maximum value of the representative values of the blocks included in the frame and an average value of the representative values of the blocks included in the frame, and a detector configured to detect click noise in the frame on the basis of a ratio of the maximum value to the average value.
    Type: Application
    Filed: April 4, 2011
    Publication date: October 20, 2011
    Inventors: Keisuke TOYAMA, Mototsugu Abe
  • Publication number: 20110161644
    Abstract: When a plurality of OSs are mounted, it is desirable to efficiently use memory resources without affecting other OSs. Also, even if the OSs are different from each other, they are mounted on one system, and therefore, inter-OS communication is required. In this case, data communication without affecting other OSs is required. Accordingly, an information processor includes: a firmware for assigning a first central processing unit, a first operating system, and a first region being a partial region of a memory as a first domain, assigning a second central processing unit, a second operating system, and a second region being a partial region of the memory as a second domain, and controlling to disable an access of one domain to a region assigned for the other domain; and a middleware for controlling a communication when the data communication is required between the first domain and the second domain.
    Type: Application
    Filed: February 26, 2009
    Publication date: June 30, 2011
    Inventors: Tohru Nojiri, Keisuke Toyama, Yoshiko Nagasaka, Yuji Saeki
  • Patent number: 7933417
    Abstract: The present invention relates to an encoding device for saving the number of bits of codes. In step S11, the differential value between a normalization coefficient Bi to be encoded and a normalization coefficient Bi-1 for an encoding unit Ai-1 in a band adjacent to the lower side of an encoding unit Ai corresponding to the normalization coefficient Bi is computed. In step S12, reference is made to a table in which a differential value having a high frequency of occurrence is associated with a code having a small number of bits, and a code corresponding to the computed differential value is read. In step S13, it is determined whether or not all normalization coefficients B have been encoded. If it is determined that all normalization coefficients B have been encoded, in step S14, the code read in step S12 is output. The present invention is applicable to an audio recorder.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: April 26, 2011
    Assignee: Sony Corporation
    Inventors: Keisuke Toyama, Shiro Suzuki, Minoru Tsuji
  • Patent number: 7912731
    Abstract: A method for encoding sound signals on multiple channels includes extracting an arbitrary number of sine waves from each of the sound signals. The sine waves include at least a first sine wave, extracted from a first one of the channels and having first-channel information, and a second sine wave, extracted from a second one of the channels and having second-channel information. Using the first-channel information and one of the second-channel information and sine wave information corresponding to a predetermined sine wave, one of the second-channel information and the sine wave information corresponding to the predetermined sine wave is selected as a to-be-correlated object for encoding in a correlation with the first-channel information.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: March 22, 2011
    Assignee: Sony Corporation
    Inventors: Minoru Tsuji, Shiro Suzuki, Keisuke Toyama
  • Patent number: 7646197
    Abstract: To perform execution scheduling of function blocks so as to control the total required power of the function blocks within a supplyable power budget value, and thereby realize stable operations at low power consumption. Function block identifiers are allotted to all the function blocks, and to a RAM area that a power consumption control device can read and write, a list to store identifiers and task priority, power mode value showing power states, and power mode time showing the holding time of power states can be linked. A single or plural link lists for controlling the schedules of tasks operating on the function blocks, a link list for controlling the function block in execution currently in high power mode, a link list for controlling the function block in stop currently in stop mode, and a link list for controlling the function block in execution currently in low power mode are allotted, and thereby the power source and the operation clock are controlled by the power consumption control device.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: January 12, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Satoshi Misaka, Makoto Saen, Tetsuya Yamada, Keisuke Toyama, Kenichi Osada
  • Patent number: 7627469
    Abstract: Any disagreement of the power level before encoding an audio signal and the power level after encoding the audio signal is adjusted to improve the sound quality to the auditory sense.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: December 1, 2009
    Assignee: Sony Corporation
    Inventors: Benjamin Frederic Nettre, Keisuke Toyama, Shiro Suzuki
  • Patent number: 7627482
    Abstract: A sound signal encoder for high efficiency encoding of sound signals from a plurality of channels is provided which includes a to-be-correlated object setter (52), to-be-correlated object selector (56) and a variable-length encoder (58). The to-be-correlated object setter (52) sets, on the basis of left-channel frequency information held in a left-channel frequency information holder (50) and right-channel frequency information held in a right-channel frequency information holder (51), index [i] indicating which ones of sine waves on the left channel are to be correlated with, namely, are to be subtracted from, sine waves on the right channel. The to-be-correlated object selector (56) selects a default value read from a storage unit (55) or index [i]-th amplitude information read from a left-channel amplitude information holder (53) as an object to be subtracted from the i-th amplitude information on the right channel according to the index [i].
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: December 1, 2009
    Assignee: Sony Corporation
    Inventors: Minoru Tsuji, Shiro Suzuki, Keisuke Toyama
  • Patent number: 7583804
    Abstract: In an audio-information encoding apparatus, in order to encode an audio signal containing a white-noise component, an index iL indicating the energy level of the white-noise component and an index iR designating the start index of a random-number table are introduced into a code train. In an audio-information decoding apparatus (20), a white-noise generating unit (25) uses the indices iL and iR contained in the code train, thereby generating a white-noise signal Sw(t) on the time axis, which has the same level as the white noise, and an adder (26) adds the white-noise signal to an audio signal Sf(t) decoded on the time axis, outputting as an output audio signal So(t).
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: September 1, 2009
    Assignee: Sony Corporation
    Inventors: Shiro Suzuki, Minoru Tsuji, Keisuke Toyama
  • Patent number: 7529874
    Abstract: A technology capable of efficiently performing the processes by using limited resources in an LSI where a plurality of real-time applications are parallelly processed is provided. To provide such a technology, a mechanism is provided in which a plurality of processes to be executed on a plurality of processing units in an LSI are managed throughout the LSI in a unified manner. For each process to be managed, a priority is calculated based on the state of progress of the process, and the execution of the process is controlled according to the priority. A resource management unit IRM or program that collects information such as a process state from each of the processing units executing the processes and calculates a priority for each process is provided. Also, a programmable interconnect unit and storage means for controlling a process execution sequence according to the priority are provided.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: May 5, 2009
    Assignee: Renesas Technology Corp.
    Inventors: Makoto Saen, Tetsuya Yamada, Satoshi Misaka, Keisuke Toyama, Kenichi Osada
  • Publication number: 20090089786
    Abstract: A technology capable of efficiently performing the processes by using limited resources in an LSI where a plurality of real-time applications are parallelly processed is provided. To provide such a technology, a mechanism is provided in which a plurality of processes to be executed on a plurality of processing units in an LSI are managed throughout the LSI in a unified manner. For each process to be managed, a priority is calculated based on the state of progress of the process, and the execution of the process is controlled according to the priority. A resource management unit IRM or program that collects information such as a process state from each of the processing units executing the processes and calculates a priority for each process is provided. Also, a programmable interconnect unit and storage means for controlling a process execution sequence according to the priority are provided.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 2, 2009
    Inventors: Makoto Saen, Tetsuya Yamada, Satoshi Misaka, Keisuke Toyama, Kenichi Osada
  • Patent number: RE46388
    Abstract: There is provided an audio coding device which appropriately sets the quantization bit number by a small calculation amount in each stage when coding an input audio signal by performing multi-stage normalization/quantization. A quantization information calculation section determines total quantization information idwl0, based on normalization information idsf, and allocates the total quantization information idwl0 for quantization information idwl1 and quantization information idwl2. At this time, the quantization information calculation section limits the quantization information idwl1 by a limiter lim1, and allocates the total quantization information idwl0 for quantization information idwl1. If the quantization information idwl1 exceeds the limiter lim1, the excess is allocated for the quantization information idwl2. A first normalization section and a first quantization section normalizes and quantizes a frequency spectrum mdspec1 in the first stage.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: May 2, 2017
    Assignee: SONY CORPORATION
    Inventors: Yuuki Matsumura, Shiro Suzuki, Keisuke Toyama, Mitsuyuki Hatanaka, Yuhki Mitsufuji
  • Patent number: RE48272
    Abstract: There is provided an audio coding device which appropriately sets the quantization bit number by a small calculation amount in each stage when coding an input audio signal by performing multi-stage normalization/quantization. A quantization information calculation section determines total quantization information idwl0, based on normalization information idsf, and allocates the total quantization information idwl0 for quantization information idwl1 and quantization information idwl2. At this time, the quantization information calculation section limits the quantization information idwl1 by a limiter lim1, and allocates the total quantization information idwl0 for quantization information idwl1. If the quantization information idwl1 exceeds the limiter lim1, the excess is allocated for the quantization information idwl2. A first normalization section and a first quantization section normalizes and quantizes a frequency spectrum mdspec1 in the first stage.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: October 20, 2020
    Assignee: SONY CORPORATION
    Inventors: Yuuki Matsumura, Shiro Suzuki, Keisuke Toyama, Mitsuyuki Hatanaka, Yuhki Mitsufuji