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 289 44
 
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 244 105
 
 
H04B TRANSMISSION 182 74
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 154 297
 
 
H04J MULTIPLEX COMMUNICATION 129 40
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 126 129
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 84 279
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 69 39
 
 
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 52 84
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 52 146
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0077,686 TERMINAL STATION DEVICE AND BANDWIDTH ALLOCATION METHOD Mar 28, 16 Mar 15, 18 [H04W]
2018/0064,397 DEVICE AND METHOD FOR SEQUENTIAL POSTURE IDENTIFICATION AND AUTONOMIC FUNCTION INFORMATION ACQUISITION Feb 16, 16 Mar 08, 18 [A61B]
2018/0067,341 HIGH-FREQUENCY TRANSMISSION LINE AND OPTICAL CIRCUIT Mar 23, 16 Mar 08, 18 [H01S, G02F, H04B]
2018/0068,095 PROCESSING EQUIPMENT AND REMOTE MANAGEMENT SYSTEM Mar 03, 16 Mar 08, 18 [G06F, H04B]
2018/0062,746 STATION-SIDE DEVICE AND OPTICAL TRANSMISSION SYSTEM Mar 04, 16 Mar 01, 18 [H04J, H04B]
2018/0063,146 BLACK LIST GENERATING DEVICE, BLACK LIST GENERATING SYSTEM, METHOD OF GENERATING BLACK LIST, AND PROGRAM OF GENERATING BLACK LIST Feb 10, 16 Mar 01, 18 [H04L]
2018/0063,831 TERMINAL STATION DEVICE AND BANDWIDTH ALLOCATION METHOD Mar 25, 16 Mar 01, 18 [H04W]
2018/0052,278 OPTICAL FIBER DESIGN METHOD Mar 18, 16 Feb 22, 18 [G02B]
2018/0053,442 SHARE RECOVERY SYSTEM, SHARE RECOVERY APPARATUS, SHARE RECOVERY METHOD, AND PROGRAM Feb 01, 16 Feb 22, 18 [G09C]
2018/0054,810 WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, WIRELESS LAN ACCESS POINT, AND WIRELESS LAN STATION Mar 04, 16 Feb 22, 18 [H04W]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9923637 Burst optical signal transmission device and control method for burst optical signal transmission device Jun 24, 14 Mar 20, 18 [H04B]
9923678 Wireless communication system, and wireless communication method Jul 19, 13 Mar 20, 18 [H04J, H04L, H04W, H04B]
9924149 Video quality evaluation apparatus, method and program Dec 05, 12 Mar 20, 18 [H04N]
9924197 Image encoding method, image decoding method, image encoding apparatus, image decoding apparatus, image encoding program, and image decoding program Dec 20, 13 Mar 20, 18 [H04N]
9911427 Gain adjustment coding for audio encoder by periodicity-based and non-periodicity-based encoding methods Jan 13, 15 Mar 06, 18 [G10L]
9912116 Burst optical signal transmission device and burst optical signal transmission method Oct 26, 15 Mar 06, 18 [H01S, H04B]
9906803 Quantization control apparatus and method, and quantization control program Mar 05, 12 Feb 27, 18 [H04N]
9891378 Cascaded core multicore fiber and manufacturing method for same Feb 23, 17 Feb 13, 18 [G02B, C03B]
9894007 Packet transfer processing apparatus and method Jun 23, 14 Feb 13, 18 [H04L]
9894056 Segmented secret-key storage system, segment storage apparatus, segmented secret-key storage method Jan 16, 14 Feb 13, 18 [H04L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2017/0111,165 PROXY COMPUTING SYSTEM, COMPUTING APPARATUS, CAPABILITY PROVIDING APPARATUS, PROXY COMPUTING METHOD, CAPABILITY PROVIDING METHOD, PROGRAM, AND RECORDING MEDIUM ABAN Dec 22, 16 Apr 20, 17 [H04L, G06F]
2016/0316,224 Video Encoding Method, Video Decoding Method, Video Encoding Apparatus, Video Decoding Apparatus, Video Encoding Program, And Video Decoding Program ABAN Dec 24, 14 Oct 27, 16 [H04N]
2016/0295,241 VIDEO ENCODING APPARATUS AND METHOD, VIDEO DECODING APPARATUS AND METHOD, AND PROGRAMS THEREFOR ABAN Dec 03, 14 Oct 06, 16 [H04N]
2016/0286,288 Optical Switch ABAN Oct 28, 14 Sep 29, 16 [H04Q]
2016/0161,692 OPTICAL FIBER RIBBON AND OPTICAL FIBER CABLE HOUSING OPTICAL FIBER RIBBON ABAN Apr 11, 14 Jun 09, 16 [G02B]
2016/0065,990 IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, IMAGE DECODING PROGRAM, AND RECORDING MEDIA ABAN Apr 04, 14 Mar 03, 16 [H04N]
2016/0037,172 IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM ABAN Apr 07, 14 Feb 04, 16 [H04N]
9247324 Wavelength selection switch system and method for controlling wavelength selection switch Withdrawn Feb 05, 13 Jan 26, 16 [G02B, H04J, H04Q]
2015/0358,644 VIDEO ENCODING APPARATUS AND METHOD, VIDEO DECODING APPARATUS AND METHOD, AND PROGRAMS THEREFOR ABAN Dec 25, 13 Dec 10, 15 [H04N]
2015/0350,678 IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING PROGRAM, IMAGE DECODING PROGRAM, AND RECORDING MEDIA ABAN Dec 20, 13 Dec 03, 15 [H04N, G06T]
2015/0271,527 VIDEO ENCODING METHOD AND APPARATUS, VIDEO DECODING METHOD AND APPARATUS, AND PROGRAMS THEREFOR ABAN Sep 20, 13 Sep 24, 15 [H04N, G06T]
2015/0249,839 PICTURE ENCODING METHOD, PICTURE DECODING METHOD, PICTURE ENCODING APPARATUS, PICTURE DECODING APPARATUS, PICTURE ENCODING PROGRAM, PICTURE DECODING PROGRAM, AND RECORDING MEDIA ABAN Sep 24, 13 Sep 03, 15 [H04N]
2015/0245,062 PICTURE ENCODING METHOD, PICTURE DECODING METHOD, PICTURE ENCODING APPARATUS, PICTURE DECODING APPARATUS, PICTURE ENCODING PROGRAM, PICTURE DECODING PROGRAM AND RECORDING MEDIUM ABAN Sep 24, 13 Aug 27, 15 [H04N]
2015/0189,276 VIDEO ENCODING METHOD AND APPARATUS, VIDEO DECODING METHOD AND APPARATUS, AND PROGRAMS THEREFOR ABAN Jul 09, 13 Jul 02, 15 [H04N]
2015/0171,965 OPTICAL LINE TERMINAL AND FRAME TRANSFER METHOD ABAN Jun 04, 13 Jun 18, 15 [H04B]
2015/0172,694 MOVING PICTURE ENCODING METHOD, MOVING PICTURE DECODING METHOD, MOVING PICTURE ENCODING APPARATUS, MOVING PICTURE DECODING APPARATUS, MOVING PICTURE ENCODING PROGRAM, MOVING PICTURE DECODING PROGRAM, AND RECORDING MEDIA ABAN Jul 09, 13 Jun 18, 15 [H04N]
2015/0172,715 PICTURE ENCODING METHOD, PICTURE DECODING METHOD, PICTURE ENCODING APPARATUS, PICTURE DECODING APPARATUS, PICTURE ENCODING PROGRAM, PICTURE DECODING PROGRAM, AND RECORDING MEDIA ABAN Jul 09, 13 Jun 18, 15 [H04N]
2014/0373,167 TRACE CENTER APPARATUS AND METHOD FOR ENABLING CONTENTS TO BE TRACED ABAN Aug 08, 13 Dec 18, 14 [G06F]
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]

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