Inventor

Kenzo Akagiri

Inventor

Kanagawa, JP

Overview

81→

Patents

1976–2013

Patent span

Electricity

Primary field (CPC H)

Patents· 81 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Bprimary

H04BTransmission29%

G11BInformation storage based on relative movement between record carrier and transducer19%

H03GControl of amplification14%

H03MCoding14%

G10LSpeech analysis techniques or speech synthesis5%

H04NPictorial communication, e.g. television3%

G06TImage data processing or generation, in general3%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes2%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers1%

G06FElectric digital data processing1%

PatentTitleYear

8,422,694'Source sound separator with spectrum analysis through linear combination and method therefor'2013 8,213,633'Sound source separation system, sound source separation method, and acoustic signal acquisition device'2012 8,069,170'Private information storage device and private information management device'2011 7,372,375'Signal reproducing method and device, signal recording method and device, and code sequence generating method and device'2008 7,218,251'Signal reproducing method and device, signal recording method and device, and code sequence generating method and device'2007 7,140,037'Signal reproducing apparatus and method, signal recording apparatus and method, signal receiver, and information processing method'2006 6,794,996'Content supply system and information processing method'2004 6,532,445'Information processing for retrieving coded audiovisual data'2003 6,501,863'Image coding apparatus, image coding method, image decoding apparatus, image decoding method and transmission medium'2002 RE037864'Quantizing error reducer for audio signal'2002 6,445,875'Apparatus and method for detecting edition point of audio/video data stream'2002 6,415,251'Subband coder or decoder band-limiting the overlap region between a processed subband and an adjacent non-processed one'2002 6,104,321'Efficient encoding method, efficient code decoding method, efficient code encoding apparatus, efficient code decoding apparatus, efficient encoding/decoding system, and recording media'2000 RE036559'Method and apparatus for encoding audio signals divided into a plurality of frequency bands'2000 6,011,824'Signal-reproduction method and apparatus'2000 5,873,065'Two-stage compression and expansion of coupling processed multi-channel sound signals for transmission and recording'1999 5,864,800'Methods and apparatus for processing digital signals by allocation of subband signals and recording medium therefor'1999 5,819,214'Length of a processing block is rendered variable responsive to input signals'1998 5,774,844'Methods and apparatus for quantizing, encoding and decoding and recording media therefor'1998 5,761,642'Device for recording and /or reproducing or transmitting and/or receiving compressed data'1998 5,757,938'High efficiency encoding device and a noise spectrum modifying device and method'1998 RE035809'Digital signal encoding with quantizing based on masking from multiple frequency bands'1998 5,754,427'Data recording method'1998 5,737,717'Method and apparatus for altering frequency components of a transformed signal, and a recording medium therefor'1998 5,687,157'Method of recording and reproducing digital audio signal and apparatus thereof'1997 5,664,056'Digital encoder with dynamic quantization bit allocation'1997 5,642,111'High efficiency encoding or decoding method and device'1997 5,621,856'Digital encoder with dynamic quantization bit allocation'1997 5,608,713'Bit allocation of digital audio signal blocks by non-linear processing'1997 5,590,108'Encoding method and apparatus for bit compressing digital audio signals and recording medium having encoded audio signals recorded thereon by the encoding method'1996 5,583,967'Apparatus for compressing a digital input signal with signal spectrum-dependent and noise spectrum-dependent quantizing bit allocation'1996 5,563,913'High efficiency encoding device and a noise spectrum modifying device and method'1996 5,553,193'Bit allocation method and device for digital audio signals using aural characteristics and signal intensities'1996 5,548,574'Apparatus for high-speed recording compressed digital audio data with two dimensional blocks and its compressing parameters'1996 5,530,750'Apparatus, method, and system for compressing a digital input signal in more than one compression mode'1996 5,502,789'Apparatus for encoding digital data with reduction of perceptible noise'1996 5,491,481'Compressed digital data recording and reproducing apparatus with selective block deletion'1996 5,490,130'Apparatus and method for compressing a digital input signal in more than one compression mode'1996 5,490,170'Coding apparatus for digital signal'1996 5,461,378'Digital signal decoding apparatus'1995 5,438,643'Compressed data recording and/or reproducing apparatus and signal processing method'1995 5,396,577'Speech synthesis apparatus for rapid speed reading'1995 5,388,209'Apparatus for high-speed recording compressed digital data with increased compression'1995 5,381,143'Digital signal coding/decoding apparatus, digital signal coding apparatus, and digital signal decoding apparatus'1995 5,311,561'Method and apparatus for compressing a digital input signal with block floating applied to blocks corresponding to fractions of a critical band or to multiple critical bands'1994 5,305,155'Digital data reproducing apparatus'1994 5,301,205'Apparatus and method for data compression using signal-weighted quantizing bit allocation'1994 5,299,238'Signal decoding apparatus'1994 5,299,240'Signal encoding and signal decoding apparatus'1994 5,299,239'Signal encoding apparatus'1994 5,294,925'Data compressing and expanding apparatus with time domain and frequency domain block floating'1994 5,283,814'Apparatus for processing digital signal'1994 5,260,980'Digital signal encoder'1993 5,241,603'Digital signal encoding apparatus'1993 5,204,677'Quantizing error reducer for audio signal'1993 5,197,087'Signal encoding apparatus'1993 5,166,981'Adaptive predictive coding encoder for compression of quantized digital audio signals'1992 5,157,760'Digital signal encoding with quantizing based on masking from multiple frequency bands'1992 5,128,963'3-mode PCM/DPCM/APCM maximizing dynamic range'1992 5,115,240'Method and apparatus for encoding voice signals divided into a plurality of frequency bands'1992 5,070,515'Method and apparatus for processing digital signal'1991 5,038,310'Amplitude compressing and/or expanding circuit employing enhanced normalization'1991 4,974,235'Method of adaptive quantization in differential pulse code modulation and a system for transmitting quantized data'1990 4,972,164'Amplitude compressing/expanding circuit'1990 4,851,844'D/A converter with switched capacitor control'1989 4,797,902'Digital signal transmission device'1989 4,783,792'Apparatus for transmitting digital signal'1988 4,685,115'Apparatus for transmitting digital signals'1987 4,521,738'Gain control circuit'1985 4,471,318'Circuit for noise reduction particularly useful with signal recording/reproducing apparatus'1984 4,453,091'Level detecting circuit'1984 4,441,083'Noise reduction circuit'1984 4,441,084'Noise reduction circuit'1984 4,433,254'Level detecting circuit'1984 4,427,950'Noise reduction circuit'1984 4,422,049'Gain control circuit'1983 4,422,051'Gain control circuit'1983 4,370,681'Gain control circuit for noise reduction system'1983 4,369,509'Gain control circuit for noise reduction system'1983 4,337,445'Compander circuit which produces variable pre-emphasis and de-emphasis'1982 3,974,400'Limiter circuit'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2011Patents assigned to SONY CORP (78)· patent assignee history

1976–2004Based in Tokyo, JP· patent location history

1982–1992Based in Yokohama, JP· patent location history

1983–2013Based in Kanagawa, JP· patent location history

1989Based in Shinagawa-ku, JP· patent location history

1993–2013Patents assigned to AKAGIRI KENZO (4)· patent assignee history

1993Patents assigned to AKUNE MAKOTO (1)· patent assignee history

2012–2013Patents assigned to KOBAYASHI TETSUNORI (2)· patent assignee history

2012–2013Patents assigned to UNIV WASEDA (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SONY CORP	78	1976–2011
AKAGIRI KENZOself	4	1993–2013
KOBAYASHI TETSUNORI	2	2012–2013
UNIV WASEDA	2	2012–2013
AKUNE MAKOTO	1	1993

Locations

Location	Patents	Span
Kanagawa, JP	63	1983–2013
Yokohama, JP	12	1982–1992
Tokyo, JP	5	1976–2004
Shinagawa-ku, JP	1	1989