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 281 42
 
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 201 112
 
 
H04B TRANSMISSION 168 73
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 134 294
 
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 133 104
 
 
H04J MULTIPLEX COMMUNICATION 120 42
 
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 86 250
 
 
G10L SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION 67 36
 
 
G06K RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS 51 135
 
 
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 49 75
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Top Patents (by citation)

Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0068,048 POLARIZATION ROTATOR Mar 04, 15 Mar 09, 17 [G02B]
2017/0070,296 OPTICAL SIGNAL TRANSMISSION APPARATUS AND OPTICAL SIGNAL TRANSMISSION METHOD Mar 17, 15 Mar 09, 17 [H04B]
2017/0070,520 WEBSITE INFORMATION EXTRACTION DEVICE, SYSTEM, WEBSITE INFORMATION EXTRACTION METHOD, AND WEBSITE INFORMATION EXTRACTION PROGRAM Mar 17, 15 Mar 09, 17 [H04L, H04W]
2017/0070,751 IMAGE ENCODING APPARATUS AND METHOD, IMAGE DECODING APPARATUS AND METHOD, AND PROGRAMS THEREFOR Mar 16, 15 Mar 09, 17 [H04N]
2017/0064,322 Video Coding Apparatus Aug 29, 16 Mar 02, 17 [H04N]
2017/0053,656 CODING DEVICE, DECODING DEVICE, METHOD, PROGRAM AND RECORDING MEDIUM THEREOF Mar 16, 15 Feb 23, 17 [G10L]
2017/0054,266 AMPLIFICATION OPTICAL FIBER AND OPTICAL FIBER AMPLIFIER Aug 15, 16 Feb 23, 17 [H01S]
2017/0055,000 MOVING IMAGE ENCODING METHOD, MOVING IMAGE DECODING METHOD, MOVING IMAGE ENCODING APPARATUS, MOVING IMAGE DECODING APPARATUS, MOVING IMAGE ENCODING PROGRAM, AND MOVING IMAGE DECODING PROGRAM Oct 15, 14 Feb 23, 17 [H04N]
2017/0045,813 VIDEO PRESENTATION DEVICE, DYNAMIC ILLUSION PRESENTATION DEVICE, VIDEO GENERATION DEVICE, METHOD THEREOF, DATA STRUCTURE, AND PROGRAM Apr 21, 15 Feb 16, 17 [G03B]
2017/0047,075 CODING DEVICE, DECODING DEVICE, METHOD, PROGRAM AND RECORDING MEDIUM THEREOF Mar 16, 15 Feb 16, 17 [G10L]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9596046 Optical line terminal and optical network unit Mar 12, 13 Mar 14, 17 [H04L, H04J, H04Q, H04B]
9588300 Optical input/output device Dec 06, 13 Mar 07, 17 [G02B, G02F]
9566236 Proteoliposome, production method thereof, and biochip Nov 26, 08 Feb 14, 17 [A61K]
9562827 Measuring method of longitudinal distribution of bending loss of optical fiber, measuring method of longitudinal distribution of actual bending loss value of optical fiber, test method of optical line, manufacturing method of optical fiber cable, manufacturing method of optical fiber cord, and manufacturing method of optical fiber Aug 19, 11 Feb 07, 17 [G01M]
9565064 Frame transmission apparatus and method for checking normality Jun 13, 14 Feb 07, 17 [H04J, H04L]
9560763 Package for optical module Jul 01, 13 Jan 31, 17 [G02B, H05K]
9552821 Encoding method, encoder, program and recording medium May 29, 13 Jan 24, 17 [G10L]
9541706 Mechanical splice unit, mechanical splicing tool, and optical fiber splicing method Jan 28, 14 Jan 10, 17 [G02B]
9541722 Optical fiber ribbon and optical fiber cable Apr 28, 14 Jan 10, 17 [G02B]
9542155 Proxy calculation system, method, request device and program thereof Mar 02, 12 Jan 10, 17 [H04L, G06F]

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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]
2013/0218,764 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]
2012/0320,985 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]
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]
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]
8157454 Releasable locking mechanism for optical connector Expired Feb 01, 08 Apr 17, 12 [G02B]
8134920 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]

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