NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology MATTERS Rank in Class
 
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 287 42
 
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 217 101
 
 
H04B TRANSMISSION 172 73
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 133 302
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 131 117
 
 
H04J MULTIPLEX COMMUNICATION 119 42
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 84 265
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 65 40
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 51 141
 
 
H01S DEVICES USING STIMULATED EMISSION 49 49
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0199,331 OPTICAL FIBER SPLICING STRUCTURE Apr 22, 15 Jul 13, 17 [G02B]
2017/0178,659 CODING METHOD, DEVICE, PROGRAM, AND RECORDING MEDIUM May 15, 15 Jun 22, 17 [G10L]
2017/0180,078 BASE STATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND COMMUNICATION METHOD Jan 29, 15 Jun 22, 17 [H04L, H04W, H04B]
2017/0180,157 BASE STATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND COMMUNICATION METHOD Jan 28, 15 Jun 22, 17 [H04L, H04W, H04B]
2017/0170,923 WDM/TDM-PON SYSTEM AND TRANSMISSION START TIME CORRECTION METHOD THEREOF Jul 17, 15 Jun 15, 17 [H04L, H04J, H04B]
2017/0160,466 MULTICORE FIBER AND MANUFACTURING METHOD OF MULTICORE FIBER Feb 23, 17 Jun 08, 17 [G02B, C03B]
2017/0155,669 DETECTION DEVICE, DETECTION METHOD, AND DETECTION PROGRAM Jul 01, 15 Jun 01, 17 [H04L]
2017/0146,742 OPTICAL WAVEGUIDE DEVICE AND MODULE Jan 26, 17 May 25, 17 [G02B]
2017/0149,808 NETWORK SYSTEM, CONTROL APPARATUS, COMMUNICATION APPARATUS, COMMUNICATION CONTROL METHOD, AND COMMUNICATION CONTROL PROGRAM Jun 17, 15 May 25, 17 [H04L]
2017/0135,889 NURSE CALL SYSTEM, INTERFACE UNIT, AND NURSE CALL CONNECTION METHOD Oct 22, 05 May 18, 17 [H04Q, A61G]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9705626 Optical system, and dynamic wavelength bandwidth allocation method for optical system Dec 06, 13 Jul 11, 17 [H04L, H04J, H04Q]
9698557 Optical fiber for amplification and optical fiber amplifier using the same Mar 07, 16 Jul 04, 17 [G02B, H01S]
9698932 Optical transmission/reception system, transmitter, receiver, and optical transmission/reception method Mar 14, 14 Jul 04, 17 [H04L, H04J, H04B]
9699083 Frame search processing apparatus and method Feb 12, 13 Jul 04, 17 [H04L]
9692543 Optical transmission system Sep 11, 14 Jun 27, 17 [H04J, H04B]
9693053 Video encoding device, video decoding device, video encoding method, video decoding method, and non-transitory computer-readable recording media that use similarity between components of motion vector Jun 26, 12 Jun 27, 17 [H04N]
9693302 Optical wireless access system Sep 25, 13 Jun 27, 17 [H04L, H04W, H04B]
9684129 Optical waveguide device and module Mar 26, 15 Jun 20, 17 [G02B]
9679149 Secret sharing system, data distribution apparatus, distributed data transform apparatus, secret sharing method and program Jul 04, 13 Jun 13, 17 [H04L, G06F]
9680595 Optical line terminal and optical network unit Mar 12, 13 Jun 13, 17 [H04L, H04J, H04Q, H04B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
9247324 Wavelength selection switch system and method for controlling wavelength selection switch Withdrawn Feb 05, 13 Jan 26, 16 [G02B, H04J, H04Q]
2014/0363,337 CHIP FOR OPTICAL ANALYSIS ABAN Aug 25, 14 Dec 11, 14 [G01N]
2014/0247,865 VIDEO ENCODING METHOD AND APPARATUS, VIDEO DECODING METHOD AND APPARATUS, AND PROGRAM THEREFOR ABAN Oct 18, 12 Sep 04, 14 [H04N]
2014/0133,546 VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM ABAN Jun 12, 12 May 15, 14 [H04N]
2014/0119,453 VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING PROGRAM, AND VIDEO DECODING PROGRAM ABAN Jun 12, 12 May 01, 14 [H04N]
2014/0010,229 DATA COMMUNICATION SYSTEM, DATA COMMUNICATION TERMINAL, DATA COMMUNICATIN METHOD, AND COMPUTER PROGRAM ABAN Dec 27, 11 Jan 09, 14 [H04L]
2013/0301,721 MULTIVIEW IMAGE ENCODING METHOD, MULTIVIEW IMAGE DECODING METHOD, MULTIVIEW IMAGE ENCODING DEVICE, MULTIVIEW IMAGE DECODING DEVICE, AND PROGRAMS OF SAME ABAN Dec 05, 11 Nov 14, 13 [H04N]
2013/0218,764 ELECTRONIC SETTLEMENT METHOD, SYSTEM, SERVER, AND PROGRAM THEREOF ABAN Mar 18, 13 Aug 22, 13 [G06Q]
2013/0136,187 VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, AND PROGRAM THEREOF ABAN Aug 05, 11 May 30, 13 [H04N]
2013/0114,733 ENCODING METHOD, DECODING METHOD, DEVICE, PROGRAM, AND RECORDING MEDIUM ABAN Jul 04, 11 May 09, 13 [H04N]
8432470 Data conversion/output apparatus for digitalizing sensor data and outputting through a sensor array Expired Feb 22, 11 Apr 30, 13 [H04N]
2013/0101,028 ENCODING METHOD, DECODING METHOD, DEVICE, PROGRAM, AND RECORDING MEDIUM ABAN Jul 04, 11 Apr 25, 13 [H04N]
2013/0058,584 IMAGE ENCODING AND DECODING FOR MULTI-VIEWPOINT IMAGES ABAN Sep 12, 12 Mar 07, 13 [G06K]
8364822 VPN communication control device, communication control method in VPN, and virtual dedicated network management device Expired Jan 29, 04 Jan 29, 13 [H06F]
2012/0320,985 MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMS THEREOF ABAN Feb 04, 11 Dec 20, 12 [H04N]
2012/0320,986 MOTION VECTOR ESTIMATION METHOD, MULTIVIEW VIDEO ENCODING METHOD, MULTIVIEW VIDEO DECODING METHOD, MOTION VECTOR ESTIMATION APPARATUS, MULTIVIEW VIDEO ENCODING APPARATUS, MULTIVIEW VIDEO DECODING APPARATUS, MOTION VECTOR ESTIMATION PROGRAM, MULTIVIEW VIDEO ENCODING PROGRAM, AND MULTIVIEW VIDEO DECODING PROGRAM ABAN Feb 18, 11 Dec 20, 12 [H04N]
2012/0314,776 MULTIVIEW VIDEO ENCODING METHOD, MULTIVIEW VIDEO DECODING METHOD, MULTIVIEW VIDEO ENCODING APPARATUS, MULTIVIEW VIDEO DECODING APPARATUS, AND PROGRAM ABAN Feb 21, 11 Dec 13, 12 [H04N]
8320391 Acoustic signal packet communication method, transmission method, reception method, and device and program thereof Expired May 10, 05 Nov 27, 12 [H04L, G10L]
2012/0294,372 MOTION VECTOR PREDICTIVE ENCODING METHOD, MOTION VECTOR PREDICTIVE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND PROGRAMS THEREOF ABAN Feb 08, 11 Nov 22, 12 [H04N]
2012/0288,242 OPTICAL MODULE ABAN May 09, 12 Nov 15, 12 [G02B]

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