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 288 38
 
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 186 109
 
 
H04B TRANSMISSION 161 73
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 129 104
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 127 285
 
 
H04J MULTIPLEX COMMUNICATION 114 45
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 87 238
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 60 41
 
 
G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 51 69
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 51 132
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0210,472 SECRET PARALLEL PROCESSING DEVICE, SECRET PARALLEL PROCESSING METHOD, AND PROGRAM Oct 03, 14 Jul 21, 16 [G06F]
2016/0205,451 MULTI-FLOW OPTICAL TRANSCEIVER, MULTI-FLOW OPTICAL TRANSPONDER AND MULTI-FLOW OPTICAL NODE Mar 24, 16 Jul 14, 16 [H04J, H04Q, H04B]
2016/0197,906 MULTI-PARTY SECURE AUTHENTICATION SYSTEM, AUTHENTICATION SERVER, INTERMEDIATE SERVER, MULTI-PARTY SECURE AUTHENTICATION METHOD, AND PROGRAM Aug 21, 14 Jul 07, 16 [H04L]
2016/0191,080 COMMUNICATION PATH DECODING METHOD AND COMMUNICATION DECODING DEVICE Aug 08, 14 Jun 30, 16 [H03M]
2016/0182,904 IMAGE ENCODING METHOD, IMAGE ENCODING APPARATUS, AND IMAGE ENCODING PROGRAM Jul 22, 14 Jun 23, 16 [H04N]
2016/0170,937 CALCULATION DEVICE, CALCULATION METHOD, AND PROGRAM Jun 30, 14 Jun 16, 16 [H04L, G06F]
2016/0170,983 INFORMATION MANAGEMENT APPARATUS AND INFORMATION MANAGEMENT METHOD Jul 24, 14 Jun 16, 16 [G06F]
2016/0161,692 OPTICAL FIBER RIBBON AND OPTICAL FIBER CABLE HOUSING OPTICAL FIBER RIBBON Apr 11, 14 Jun 09, 16 [G02B]
2016/0156,911 IMAGE ENCODING APPARATUS AND METHOD, AND IMAGE ENCODING PROGRAM Jul 22, 14 Jun 02, 16 [H04N]
2016/0148,002 KEY STORAGE APPARATUS, KEY STORAGE METHOD AND PROGRAM THEREFOR Jul 02, 14 May 26, 16 [H04L, G06F]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9,389,386 Manufacturing method of optical fiber ribbon, manufacturing device for optical fiber ribbon implementing said manufacturing method, and optical fiber ribbon manufactured with said manufacturing method Feb 15, 13 Jul 12, 16 [G02B]
9,385,867 Cryptographic processing system, key generation device, encryption device, decryption device, key delegation device, cryptographic processing method, and cryptographic processing program Dec 12, 11 Jul 05, 16 [H04K, H04L]
9,386,322 Scalable video encoding method and decoding method, apparatuses therefor, programs therefor, and storage media which store the programs Jul 01, 08 Jul 05, 16 [H04N]
9,372,339 Wavelength swept light source Jan 04, 12 Jun 21, 16 [H01S, G02B, G02F]
9,370,013 Wireless communication method, base station, wireless communication system, and communication apparatus Oct 20, 14 Jun 14, 16 [H04L, H04W, H04B]
9,360,629 Waveguide type optical switch Feb 14, 12 Jun 07, 16 [G02B, H04Q, G02F]
9,363,003 Transmitter and wireless communication method Nov 05, 13 Jun 07, 16 [H04L, H04B]
9,363,515 Image processing method, image processing apparatus, video encoding/decoding methods, video encoding/decoding apparatuses, and non-transitory computer-readable media therefor that perform denoising by means of template matching using search shape that is set in accordance with edge direction of image Mar 07, 12 Jun 07, 16 [H04N, G06T]
9,350,482 Wavelength and bandwidth allocation method Dec 28, 12 May 24, 16 [H04L, H04J]
9,336,080 Transmission system and transmission method Jul 04, 12 May 10, 16 [H04L, G06F, H03M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
9,247,324 Wavelength selection switch system and method for controlling wavelength selection switch Withdrawn Feb 05, 13 Jan 26, 16 [G02B, H04J, H04Q]
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]
2014/0010,229 DATA COMMUNICATION SYSTEM, DATA COMMUNICATION TERMINAL, DATA COMMUNICATIN METHOD, AND COMPUTER PROGRAM ABAN Dec 27, 11 Jan 09, 14 [H04L]
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]
2013/0101,028 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]
2012/0288,242 OPTICAL MODULE ABAN May 09, 12 Nov 15, 12 [G02B]
2012/0172,735 BLOOD PRESSURE MEASURING APPARATUS AND BLOOD PRESSURE MEASURING METHOD ABAN Mar 16, 12 Jul 05, 12 [A61B]
2012/0123,788 CODING METHOD, DECODING METHOD, AND DEVICE AND PROGRAM USING THE METHODS ABAN Jun 22, 10 May 17, 12 [H04B, G10L]
8,157,454 Releasable locking mechanism for optical connector Expired Feb 01, 08 Apr 17, 12 [G02B]
8,134,920 Device and method for correcting a path trouble in a communication network Expired Feb 20, 04 Mar 13, 12 [G01R, H04L]
2012/0053,949 ENCODING DEVICE, DECODING DEVICE, ENCODING METHOD, DECODING METHOD AND PROGRAM THEREFOR ABAN May 28, 10 Mar 01, 12 [G10L]
8,126,712 Information communication terminal, information communication system, information communication method, and storage medium for storing an information communication program thereof for recognizing speech information Expired Feb 08, 06 Feb 28, 12 [G10L]
8,120,930 Rush current reduction circuit and electric appliance Expired Oct 19, 06 Feb 21, 12 [H02M]
2011/0304,897 Optical Semiconductor Module and Method for Assembling the Same ABAN Oct 09, 09 Dec 15, 11 [G02B, G02F, H01L]
2011/0273,443 SYSTEM AND A METHOD FOR THREE-DIMENSIONAL MODELING OF A THREE-DIMENSIONAL SCENE FEATURES ABAN Aug 12, 09 Nov 10, 11 [G06T]
8,037,478 Object state transfer method, object state transfer device, object state transfer program, and recording medium for the program Expired Apr 21, 08 Oct 11, 11 [G06F]
8,014,645 Dispersion shifted optical fiber Expired May 16, 03 Sep 06, 11 [G02B]
8,009,994 Optical node device, network control device, maintenance-staff device, optical network, and 3R relay implementation node decision method Withdrawn Apr 02, 09 Aug 30, 11 [H04B]

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