Nippon Telegraph and Telephone Corporation patent applications published on December 14th, 2023

Summary of the patent applications from Nippon Telegraph and Telephone Corporation on December 14th, 2023

Nippon Telegraph and Telephone Corporation has recently filed several patents related to optical communication devices, information processing systems, certificate issuance support systems, optical line terminals, optical power supply systems, and sound signal purification methods. These patents aim to improve the efficiency, performance, and security of various technologies and systems.

Summary of Recent Patents:

• Optical communication device: Includes an optical switch, wavelength management control unit, and optical switch control unit. It improves signal routing and parameter allocation in optical communication networks.
• Information processing system: Allows multiple users to access the same content through a network while compensating for transmission delays. It enhances user experience and enables real-time collaboration.
• Certificate issuance support system: Simplifies the process of obtaining OV certificates by automating organization existence verification and member affiliation. It enhances security and streamlines certificate application.
• Optical line terminal: Dynamically changes the time width and cycle of an authentication request signal from a new optical network unit. It improves authentication efficiency and flexibility in optical communication networks.
• Optical power supply system: Transmits power using optical signals and includes sleep control and detection units. It enables efficient power transmission and remote control of functional units in power receiving devices.
• Sound signal purification method: Involves upmixing and purifying monaural decoded sound signals using inter-channel relationship information. It improves audio quality and enhances the audio experience.

Notable Applications:

• Optical communication networks
• Fiber optic systems
• Telecommunications
• Online gaming platforms
• Video streaming services
• Virtual reality applications
• Organizations requiring OV certificates
• Industries where verifying organization existence is crucial
• Energy storage for renewable energy systems
• Portable electronic devices
• Electric vehicles
• Backup power systems
• Audio processing in stereo systems
• Multimedia and virtual reality experiences
• Financial forecasting
• Weather prediction
• Disease outbreak prediction
• Demand forecasting.

Patent applications for Nippon Telegraph and Telephone Corporation on December 14th, 2023

RRI Measurement Device, RRI Measurement Method and RRI Measurement Program (18247818)

Main Inventor

Yuki Hashimoto

Brief explanation

The abstract describes a measurement device for RRI (R-R interval) calculation in electrocardiogram signals. The device includes:

• R wave detection unit: Detects the peak point of an R wave in the electrocardiogram signal.
• Waveform estimation unit: Estimates the waveform near the R wave based on the detected peak point and surrounding data. It then re-detects the peak point of the R wave using the estimated waveform.
• RRI calculation unit: Calculates the RRI based on the time-series data of the detected R wave peak points.

Potential applications of this technology:

• Medical diagnosis: The device can be used in medical settings to analyze electrocardiogram signals and calculate RRI, which is useful for assessing heart rate variability and diagnosing various cardiac conditions.
• Wearable devices: The technology can be integrated into wearable devices such as fitness trackers or smartwatches to provide real-time monitoring of heart rate and RRI, enabling users to track their cardiovascular health.

Problems solved by this technology:

• Accurate R wave detection: The device improves the accuracy of R wave detection by estimating the waveform near the R wave and re-detecting the peak point. This helps in obtaining reliable RRI measurements.
• Efficient RRI calculation: By utilizing time-series data of R wave peak points, the device calculates RRI efficiently, providing a reliable measure of heart rate variability.

Benefits of this technology:

• Improved accuracy: The waveform estimation and re-detection process enhance the accuracy of R wave detection, leading to more precise RRI calculations.
• Real-time monitoring: The device enables real-time monitoring of RRI, allowing for timely detection of any abnormalities in heart rate variability.
• Non-invasive measurement: The technology utilizes electrocardiogram signals, which are non-invasive and widely available, making it convenient for users to measure RRI without the need for invasive procedures.

Abstract

An RRI measurement device includes: an R wave detection unit configured to detect a peak point of an R wave from a sampling data sequence of an electrocardiogram signal of a subject; an R wave detection unit configured to estimate a waveform near the R wave of the electrocardiogram signal on the basis of the peak point of the R wave detected by the R wave detection unit and sampling data of the electrocardiogram signal before and after the peak point and to detect the peak point of the R wave again on the basis of the estimated waveform; and an RRI calculation unit configured to calculate an RRI on the basis of time-series data of the peak point of the R wave detected by the R wave detection unit.

STRUCTURE MANAGEMENT SYSTEM (18246995)

Main Inventor

Shingo Mineta

Brief explanation

==Abstract==

A patent application describes a structure made of steel that is buried in the ground. The structure has two wirings - one connected to the structure and the other connected to an electrode. A switch controls the conduction state between the two wirings. When the switch is turned on, the electrode has a higher potential than the structure. The electrode can be made of a metal with a lower ionization tendency than the metal in the structure.

Bullet Points

• Structure made of steel buried in the ground
• Two wirings - one connected to the structure, the other to an electrode
• Switch controls conduction state between the wirings
• When switch is on, electrode has higher potential than structure
• Electrode made of metal with lower ionization tendency than structure's metal

Potential Applications

• Grounding systems for electrical installations
• Lightning protection systems for buildings and structures
• Cathodic protection systems for underground pipelines and tanks

Problems Solved

• Provides a controlled conduction state between a structure and an electrode
• Prevents corrosion and damage to the structure by diverting electrical currents
• Protects against lightning strikes and electrical surges

Benefits

• Improved safety and protection for structures and electrical systems
• Reduces the risk of corrosion and damage to buried structures
• Enhances the lifespan and durability of infrastructure
• Minimizes the impact of lightning strikes and electrical surges

Abstract

A structure is made of a metal such as a steel material and is buried in the ground. A first wiring is connected to the structure. A second wiring is connected to an electrode. A switch turns on and off a conduction state between the first wiring and the second wiring. In a state where the switch is turned on, the electrode is in a higher potential state as compared to the structure. The electrode can be made of a metal having an ionization tendency lower than that of the metal included in the structure.

DEVICES AND METHODS FOR MEASURING THE AMOUNT OF FREQUENCY MODULATION (18034754)

Main Inventor

Tatsuya OKAMOTO

Brief explanation

The present disclosure is about a device that measures the optical spectral shift of scattered light in an optical transmission line and calculates the frequency modulation amount at a specific position using this measurement.

• The device measures the optical spectral shift of scattered light in an optical transmission line.
• It calculates the frequency modulation amount at a specific position using the measured optical spectral shift.

Potential Applications

This technology can have various applications in the field of optical transmission lines and frequency modulation measurements. Some potential applications include:

• Optical communication systems
• Fiber optic sensing systems
• Optical network monitoring and maintenance

Problems Solved

This technology addresses the following problems:

• Difficulty in accurately measuring the frequency modulation amount in optical transmission lines.
• Lack of a device that can measure the optical spectral shift and calculate the frequency modulation amount at a specific position.

Benefits

The benefits of this technology include:

• Accurate measurement of the frequency modulation amount in optical transmission lines.
• Ability to calculate the frequency modulation amount at a specific position.
• Improved monitoring and maintenance of optical networks.
• Enhanced performance of optical communication and sensing systems.

Abstract

The present disclosure relates to a frequency modulation amount measuring device that measures an optical spectral shift of scattered light at a position in an optical transmission line, and calculates a frequency modulation amount at the position, using the measured optical spectral shift.

OPTICAL SIDE INPUT/OUTPUT CIRCUIT AND OPTICAL CONNECTOR (18026359)

Main Inventor

Yoko YAMASHITA

Brief explanation

The abstract of the patent application describes an optical side input/output circuit that has wavelength selectivity and can be easily disposed at multiple points in a transmission path. It also mentions an optical connector.

• The invention provides an optical side input/output circuit.
• The circuit has wavelength selectivity.
• The circuit can be easily disposed at multiple points in a transmission path.
• The invention also includes an optical connector.

Potential Applications

The technology described in the patent application has potential applications in various fields, including:

• Telecommunications
• Data transmission
• Fiber optic networks
• Optical signal processing

Problems Solved

The technology solves several problems in the field of optical communication, including:

• Lack of wavelength selectivity in side input/output circuits
• Difficulty in disposing side input/output circuits at multiple points in a transmission path
• Limited options for optical connectors

Benefits

The technology offers several benefits, such as:

• Wavelength selectivity in the side input/output circuit
• Easy disposal of the circuit at multiple points in a transmission path
• Improved flexibility and versatility in optical communication systems
• Enhanced performance and efficiency in data transmission

Abstract

An object is to provide an optical side input/output circuit that has wavelength selectivity and is easily disposed at multiple points in a transmission path, and an optical connector.

Optical Computing Machine (18250378)

Main Inventor

Takuya Ikuta

Brief explanation

The present invention is an optical computer designed to have high scalability and reduce noise. It consists of three main layers: an input layer, a reservoir layer, and an output layer.

• The input layer accepts an input signal as a computer.
• The reservoir layer responds to the signal input from the input layer.
• The reservoir layer uses degenerate optical parametric oscillator (DOPO) pulses generated by an optical phase-sensitive amplifier (PSA) as nodes.
• The connection relation between the nodes is determined using a measurement feedback method or an equivalent method.
• The output layer generates an output signal based on the responses of the DOPO pulses to the input signal from the reservoir layer.

Potential applications of this technology:

• High-performance computing: The optical computer's high scalability and reduced noise make it suitable for complex computational tasks.
• Data processing: The ability to handle large amounts of data quickly and efficiently can benefit applications such as data analytics and machine learning.
• Communication systems: The optical computer's noise reduction capabilities can enhance the performance of optical communication systems.

Problems solved by this technology:

• Scalability: The optical computer offers high scalability, allowing for increased computational power as needed.
• Noise reduction: By utilizing degenerate optical parametric oscillator pulses and measurement feedback methods, the optical computer effectively reduces noise in its operations.

Benefits of this technology:

• Improved performance: The optical computer's high scalability and noise reduction contribute to enhanced computational performance.
• Faster data processing: The ability to handle large amounts of data and reduce noise allows for faster data processing and analysis.
• Energy efficiency: Optical computing can potentially offer energy-efficient solutions compared to traditional electronic computing methods.

Abstract

The purpose of the present invention is to provide an optical computer having high scalability and capable of reducing noise. This optical computer is characterized by including: an input layer which accepts an input signal as a computer; a reservoir layer which responds to a signal input from the input layer, and in which using a plurality of degenerate optical parametric oscillator (DOPO) pulses of a DOPO that are generated by an optical phase-sensitive amplifier (PSA) based on pump light as nodes, a connection relation between the nodes is determined by a measurement feedback method or a method equivalent to the measurement feedback method; and an output layer which outputs an output signal based on the respective responses of the plurality of DOPO pulses to the input signal from the reservoir layer.

SECRET MSB NORMALIZATION SYSTEM, DISTRIBUTED PROCESSING APPARATUS, SECRET MSB NORMALIZATION METHOD, PROGRAM (18030522)

Main Inventor

Dai IKARASHI

Brief explanation

The abstract describes a secure MSB (Most Significant Bit) normalization system that includes multiple distributed processing apparatuses. Each apparatus has several units to perform different functions such as bit decomposition, logical sum acquisition, shift amount acquisition, and shift operation. The system is designed to process a vector of secret shared shares and perform operations to normalize the most significant bit.

• The system includes multiple distributed processing apparatuses.
• Each apparatus has a bit decomposition unit, logical sum acquisition unit, shift amount acquisition unit, and shift unit.
• The bit decomposition units decompose a vector of secret shared shares into bits.
• The logical sum acquisition units calculate the logical sum of all elements at each bit position.
• The shift amount acquisition units distribute a shift amount for shifting the most significant bit to a fixed position.
• The shift units shift each element of the vector by the calculated shift amount.

Potential Applications:

• Secure data processing and normalization in distributed systems.
• Cryptographic protocols and secure computations.
• Privacy-preserving data analysis and machine learning.

Problems Solved:

• Ensures secure processing of secret shared shares.
• Normalizes the most significant bit of a vector in a secure manner.
• Enables secure computations and data analysis in distributed systems.

Benefits:

• Provides a secure method for normalizing the most significant bit.
• Protects the privacy and security of secret shared shares.
• Enables secure and efficient distributed processing of sensitive data.

Abstract

A secure MSB normalization system includes n distributed processing apparatuses, each including a bit decomposition unit, a logical sum acquisition unit, a shift amount acquisition unit, and a shift unit, the n bit decomposition units decompose a vector [[{right arrow over ( )}a]]of a (k, n)-secret shared share into bits and obtain a bit representation vector [[{right arrow over ( )}a]]of the vector [[{right arrow over ( )}a]], the n logical sum acquisition units obtain a logical sum Aof all elements for a vector [[{right arrow over ( )}a]] at each bit position of the bit representation [[{right arrow over ( )}a]], the n shift amount acquisition units obtain a share <<ρ>>obtained by distributing a shift amount ρ for shifting the most significant bit of a logical sum A, . . . , Ato a fixed position by (k, n)-replica secret sharing by a modulus p, and the n shift units obtain a vector [[2{right arrow over ( )}a]]in which each element of the vector [[{right arrow over ( )}a]]is shifted left by ρ bits.

SECRET GROUPING APPARATUS, SECRET GROUPING SYSTEM, SECRET GROUPING METHOD, AND PROGRAM (18246928)

Main Inventor

Koki HAMADA

Brief explanation

The abstract describes a secret grouping apparatus that classifies a set of elements into groups using secret calculations. Here is a simplified explanation of the abstract:

• The secret grouping apparatus receives a target vector, which is a set of elements arranged in a way that elements belonging to the same group are adjacent.
• It also receives a group information vector, which represents the last element in each group, and a classification destination vector, which indicates the desired classification for each element in the group.
• The apparatus calculates a detection vector, which represents the last element of elements classified into the same destination within the group, using the target vector, group information vector, and classification destination vector.
• The apparatus then sorts the target vector and detection vector based on the classification destination vector, resulting in a new target vector where each element is classified into the appropriate destination within the group.
• It also generates a group information vector representing the last element in each group after the classification process.

Potential applications of this technology:

• Data classification: The secret grouping apparatus can be used to classify data elements into different groups based on certain criteria, while keeping the classification process secret.
• Privacy-preserving algorithms: This technology can be applied in algorithms that require grouping or classification of sensitive data, ensuring that the process remains confidential.
• Secure communication: The secret grouping apparatus can be used to securely group and classify messages or information exchanged between parties, protecting the confidentiality of the communication.

Problems solved by this technology:

• Confidentiality: The secret grouping apparatus ensures that the classification process remains secret, preventing unauthorized access to sensitive information.
• Secure data handling: By using secret calculations, this technology provides a secure way to classify and group data, protecting it from potential threats or attacks.
• Privacy preservation: The apparatus allows for the classification of data elements without revealing the specific criteria or classification destinations, preserving the privacy of the data and the individuals associated with it.

Benefits of this technology:

• Enhanced security: By using secret calculations and maintaining confidentiality, the secret grouping apparatus provides an additional layer of security to data classification processes.
• Efficient classification: The apparatus enables the efficient classification of data elements into groups, reducing the time and effort required for manual classification.
• Privacy protection: This technology ensures that sensitive information remains private and confidential during the classification process, protecting the privacy of individuals and organizations.

Abstract

A secret grouping apparatus according to an embodiment is a secret grouping apparatus, which classifies a plurality of elements into one or more groups through secret calculation, includes: an input unit configured to receive, as an input, a target vector in which the plurality of elements are disposed so that elements belonging to a same group are continuous, a group information vector representing a last element in the group, and a classification destination vector representing a classification destination of each of the elements in the group; a detection vector calculation unit configured to calculate a detection vector representing a last element of elements classified into a same classification destination in the group by using the target vector, the group information vector, and the classification destination vector; and a classification unit configured to stably sort the target vector and the detection vector with respect to the classification destination vector to create a target vector after classifying each of the elements into the classification destination in the group and a group information vector representing a last element in a group after the classification.

PREDICTION METHOD, PREDICTION APPARATUS AND PROGRAM (18248760)

Main Inventor

Hideaki KIN

Brief explanation

The patent application describes a computer-based prediction method that optimizes parameters of two functions to calculate a prediction distribution of future observation values. Here are the key points:

• The method optimizes a parameter of a second function that outputs parameters of a first function from covariates.
• It also optimizes a parameter of a kernel function of a Gaussian process.
• The optimization is done using a series of past observation values and the corresponding covariates.
• The observation values are non-linearly transformed by the first function to follow the Gaussian process.
• The method then calculates a prediction distribution of observation values for a future period using the optimized parameters, the second function, the kernel function, and a series of covariates for that period.

Potential applications of this technology:

• Financial forecasting: Predicting stock prices, exchange rates, or other financial indicators.
• Weather prediction: Forecasting temperature, precipitation, or other weather variables.
• Disease outbreak prediction: Anticipating the spread of infectious diseases based on various factors.
• Demand forecasting: Estimating future demand for products or services.

Problems solved by this technology:

• Accurate prediction: The method optimizes parameters to improve the accuracy of predictions.
• Non-linear relationships: The first function allows for non-linear transformations of observation values.
• Incorporating covariates: The method considers covariates to enhance the prediction model.

Benefits of this technology:

• Improved decision-making: Accurate predictions can help make informed decisions.
• Real-time forecasting: The method can be used to continuously update predictions as new data becomes available.
• Flexibility: The non-linear transformations and incorporation of covariates allow for a wide range of prediction scenarios.

Abstract

A prediction method executed by a computer including a memory and a processor, the method includes: optimizing a parameter of a second function that outputs parameters of a first function from covariates, and optimizing a parameter of a kernel function of a Gaussian process, by using a series of observation values observed in a past and a series of the covariates observed simultaneously with the observation values, wherein values obtained by non-linearly transforming the observation values by the first function follow the Gaussian process; and calculating a prediction distribution of observation values in a period in future to be predicted by using the second function and the kernel function having parameters optimized in the optimizing, and a series of covariates in the period.

SOUND SIGNAL REFINING METHOD, SOUND SIGNAL DECODING METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM (18032792)

Main Inventor

Ryosuke SUGIURA

Brief explanation

A sound signal purification method is described in this patent application. The method involves two steps: 

1. Monaural decoded sound upmixing: This step upmixes a monaural decoded sound signal for each channel using inter-channel relationship information. It generates an n-th channel upmixed monaural decoded sound signal.

2. N-th channel signal purification: This step purifies the n-th channel upmixed monaural decoded sound signal by combining it with the n-th channel decoded sound signal. The purification weight α determines the contribution of each signal in the final sequence.

• The method involves upmixing a monaural decoded sound signal for each channel using inter-channel relationship information.
• It purifies the upmixed signal by combining it with the original decoded sound signal for each channel.
• The purification weight α determines the contribution of each signal in the final sequence.

Potential applications of this technology:

• Audio signal processing in stereo systems or audio devices.
• Enhancing the quality of monaural sound signals by upmixing and purifying them.
• Improving the audio experience in virtual reality or augmented reality applications.

Problems solved by this technology:

• Improves the quality of monaural sound signals by utilizing inter-channel relationship information.
• Enhances the audio experience by upmixing and purifying sound signals.
• Provides a method for purifying sound signals in a simple and efficient manner.

Benefits of this technology:

• Improved audio quality and clarity.
• Enhanced spatial audio experience.
• Simplified sound signal purification process.
• Compatibility with various audio devices and systems.

Abstract

A sound signal purification method includes a monaural decoded sound upmixing step of obtaining, an n-th channel upmixed monaural decoded sound signal {circumflex over ( )}Xthat is a signal obtained by upmixing a monaural decoded sound signal {circumflex over ( )}Xfor each channel by an upmixing process using the monaural decoded sound signal {circumflex over ( )}Xand inter-channel relationship information that is information indicating a relationship between channels of stereo, and an n-th channel signal purification step of obtaining a sequence based on a value {tilde over ( )}x(t) obtained by adding a value α×{circumflex over ( )}x(t) obtained by multiplying an n-th channel purification weight αby a sample value {circumflex over ( )}x(t) of the n-th channel upmixed monaural decoded sound signal {circumflex over ( )}Xand a value obtained by multiplying a value (1−α) obtained by subtracting the n-th channel purification weight αfrom 1 by a sample value {circumflex over ( )}x(t) of the n-th channel decoded sound signal {circumflex over ( )}X.

SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST PROCESSING METHOD, SOUND SIGNAL DECODE METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM (18033297)

Main Inventor

Ryosuke SUGIURA

Brief explanation

The patent application describes a method for compensating high-frequency energy in decoded sound signals. The method involves signal processing in the time domain to obtain a purified decoded sound signal for each channel of stereo audio. 

• The method compensates for high-frequency energy in the decoded sound signals.
• It involves signal processing in the time domain.
• The method works on each channel of stereo audio.
• A high-frequency compensation gain is calculated for each frame and channel.
• The method adds the original decoded sound signal with a high-frequency component of a monaural decoded sound signal.
• The monaural decoded sound signal is obtained by decoding a different code from the stereo code or by upmixing.
• The resulting compensated decoded sound signal is output for each channel.

Potential Applications

• Audio processing and enhancement in stereo systems.
• Improving the quality of decoded sound signals in multimedia applications.
• Enhancing the audio experience in virtual reality or augmented reality environments.

Problems Solved

• Compensating for high-frequency energy differences in decoded sound signals.
• Improving the fidelity and clarity of audio playback.
• Addressing the limitations of stereo decoding and monaural decoding in audio systems.

Benefits

• Enhanced audio quality with balanced high-frequency energy.
• Improved accuracy in reproducing the original audio content.
• Better immersion and realism in multimedia and virtual reality experiences.

Abstract

For each frame, an n-th channel compensated decoded sound signal X′is obtained that is a signal obtained by compensating a high frequency of an n-th channel purified decoded sound signal Xobtained by performing signal processing in a time domain on an n-th channel decoded sound signal Xthat is a decoded sound signal of each channel of stereo obtained by decoding a stereo code CS. At this time, for the each frame with respect to the each channel, an n-th channel high-frequency compensation gain ρthat is a value for bringing high-frequency energy of X′close to high-frequency energy of Xis obtained, and for the each frame with respect to the each channel, a signal obtained by adding Xand a signal obtained by multiplying a high-frequency component of a monaural decoded sound signal that is obtained by decoding a monaural code CM that is a code different from the stereo code CS or a signal obtained by upmixing, for the each channel, the monaural decoded sound signal by the n-th channel high-frequency compensation gain ρis obtained and output as the n-th channel compensated decoded sound signal X′.

Iron Zinc Battery (18249280)

Main Inventor

Masaya Nohara

Brief explanation

==Abstract==

An iron-zinc battery is described in this patent application. The battery consists of a positive electrode made of iron oxyhydroxide, a negative electrode made of zinc, and an electrolyte placed between the positive and negative electrodes.

Patent/Innovation Explanation

• Iron-zinc battery design
• Positive electrode made of iron oxyhydroxide
• Negative electrode made of zinc
• Electrolyte placed between the electrodes

Potential Applications

• Energy storage for renewable energy systems
• Portable electronic devices
• Electric vehicles
• Backup power systems

Problems Solved

• Limited energy storage capacity of current battery technologies
• High cost and environmental impact of lithium-ion batteries
• Safety concerns associated with certain battery chemistries

Benefits

• Higher energy storage capacity compared to traditional batteries
• Lower cost and reduced environmental impact compared to lithium-ion batteries
• Enhanced safety features
• Suitable for various applications due to versatility and scalability

Abstract

An iron-zinc battery includes a positive electrode containing iron oxyhydroxide, a negative electrode containing zinc, and an electrolyte disposed between the positive electrode and the negative electrode.

RECEIVING APPARATUS AND RECEIVING METHOD (18037519)

Main Inventor

Ryo IGARASHI

Brief explanation

The present invention is a receiving apparatus that receives signal light frequency-modulated by a signal obtained by adding a main signal and a control signal with a lower frequency than the main signal. It converts the signal light into an analog electric signal and acquires a code sequence corresponding to the control signal based on the analog electric signal.

• The receiving apparatus includes a reception unit that converts signal light into an analog electric signal.
• The processing unit in the apparatus acquires a code sequence corresponding to the control signal from the analog electric signal.
• The processing unit also includes a frequency offset amount acquisition unit that determines the frequency offset amount of the signal light based on the analog electric signal.
• The determination unit in the processing unit determines the code sequence corresponding to the control signal based on the acquired frequency offset amount.

Potential Applications

• This technology can be used in optical communication systems to receive and process frequency-modulated signal light.
• It can be applied in optical data transmission systems to extract control signals from the received signal light.

Problems Solved

• The receiving apparatus solves the problem of extracting control signals from frequency-modulated signal light.
• It addresses the challenge of accurately determining the code sequence corresponding to the control signal in the presence of frequency offset.

Benefits

• The receiving apparatus simplifies the process of acquiring code sequences from frequency-modulated signal light.
• It improves the accuracy of determining the code sequence by considering the frequency offset amount.
• This technology enhances the efficiency and reliability of optical communication systems.

Abstract

One aspect of the present invention is a receiving apparatus including a reception unit that receives signal light frequency-modulated by a signal obtained by adding a main signal and a control signal having a lower frequency than the main signal, and converts the signal light into an analog electric signal, and a processing unit that acquires a code sequence corresponding to the control signal on the basis of the analog electric signal, in which the processing unit includes a frequency offset amount acquisition unit that acquires a frequency offset amount of the signal light acquired on the basis of the analog electric signal, and a determination unit that determines the code sequence corresponding to the control signal on the basis of the frequency offset amount acquired by the frequency offset amount acquisition unit.

OPTICAL POWER SUPPLY SYSTEM, WAKEUP METHOD AND OPTICAL COMMUNICATION DEVICE ON THE RECEIVING SIDE (18036314)

Main Inventor

Hiroaki KATSURAI

Brief explanation

The patent application describes an optical power supply system that uses an optical signal to transmit power from a power supply side device to a power receiving side device. The power supply side device includes a sleep control unit that generates a sleep cancellation signal to wake up certain functional units in the power receiving side device. This sleep cancellation signal is then superimposed on the optical signal and transmitted to the power receiving side device. The power receiving side device has a detection unit that detects the sleep cancellation signal and a control unit that switches the functional units from a sleep state to an activated state in response to the detected signal.

• Power supply system that uses optical signals for power transmission
• Sleep control unit in the power supply side device generates a sleep cancellation signal
• Power supply control unit superimposes the sleep cancellation signal on the optical signal
• Detection unit in the power receiving side device detects the sleep cancellation signal
• Control unit in the power receiving side device switches functional units from sleep to activated state

Potential Applications

• Optical power supply systems for various devices and equipment
• Power transmission in remote or hard-to-reach locations
• Power supply in environments where traditional electrical wiring is not feasible

Problems Solved

• Efficient power transmission without the need for traditional electrical wiring
• Ability to remotely control and activate functional units in power receiving devices
• Reduction in power consumption by enabling sleep states in functional units when not in use

Benefits

• Simplified power supply system using optical signals
• Improved energy efficiency by enabling sleep states in functional units
• Remote control and activation of devices and equipment

Abstract

An optical power supply system including a power supply side optical communication device that supplies power using an optical signal for power supply, and a power receiving side optical communication device that is driven by power obtained from the optical signal for power supply transmitted from the power supply side optical communication device, in which: the power supply side optical communication device includes a sleep control unit that generates a sleep cancellation signal for canceling sleep states of some functional units included in the power receiving side optical communication device, and a power supply control unit that superimposes the sleep cancellation signal on the optical signal for power supply and transmits the superimposed signal to the power receiving side optical communication device; and the power receiving side optical communication device includes a detection unit that detects the sleep cancellation signal superimposed on the optical signal for power supply, and a control unit that performs control to switch a functional unit from a sleep state to an activated state in response to the sleep cancellation signal detected by the detection unit.

STATION SIDE OPTICAL LINE TERMINAL AND REGISTRATION METHOD (18035007)

Main Inventor

Ryo KOMA

Brief explanation

The abstract describes an optical line terminal that can dynamically change the time width and cycle of a specific period in which an authentication request signal is received from a new optical network unit. 

• The optical line terminal has a communication unit that can communicate with multiple optical network units.
• The control unit of the optical line terminal can modify the time width and cycle of the specific period.
• The specific period refers to the time interval in which an authentication request signal is received from a new optical network unit.

Potential Applications:

• Optical communication networks
• Fiber optic systems
• Telecommunication infrastructure

Problems Solved:

• Efficient authentication of new optical network units
• Flexibility in adjusting the time width and cycle of the authentication period

Benefits:

• Improved network security
• Enhanced flexibility in managing optical network units
• Efficient utilization of resources

Abstract

An optical line terminal includes a communication unit configured to communicate with a plurality of optical network units, and a control unit configured to dynamically change at least one of a time width of a specific period and a cycle of the specific period, the specific period being a period in which an authentication request signal is received from the new optical network unit via the communication unit.

CERTIFICATE ISSUANCE SUPPORT SYSTEM, CERTIFICATE ISSUANCE SUPPORT METHOD AND PROGRAM (18250639)

Main Inventor

Ryohei SUZUKI

Brief explanation

The abstract describes a certificate issuance support system that includes a certificate application device and an existence assurance device. 

• The certificate application device is used by an organization to apply for an OV certificate from an authentication station.
• The existence assurance device is used by another organization to guarantee the existence of the first organization.
• The existence assurance device provides a signature to information that proves the existence of the first organization.
• The certificate application device generates a signature to information that proves the affiliation of a member with the authentication station.
• The existence assurance device verifies the signature generated by the certificate application device.
• The certificate application device transmits the signed information to the authentication station to receive the OV certificate.

Potential applications of this technology:

• This technology can be used in organizations that require OV certificates for authentication purposes.
• It can be used in industries where verifying the existence of organizations is crucial, such as finance, healthcare, and government.

Problems solved by this technology:

• This technology solves the problem of ensuring the existence of an organization and the affiliation of its members with an authentication station.
• It provides a secure and reliable way to obtain OV certificates.

Benefits of this technology:

• The system simplifies the process of applying for OV certificates by automating the verification of organization existence and member affiliation.
• It enhances security by using signatures to guarantee the authenticity of information.
• The system provides a streamlined and efficient way to obtain OV certificates.

Abstract

A certificate issuance support system includes a certificate application device in a first organization for applying to an authentication station for issuance of an OV certificate; and an existence assurance device in a second organization for guaranteeing the existence of the first organization. The existence assurance device imparts a first signature to first information for guaranteeing the existence of the first organization in response to a request from a terminal used by a member of the first organization, transmits the first information imparted with the first signature is to the certificate application device, and verifies a second signature generated by the certificate application device and imparted to second information for guaranteeing affiliation of the member with the authentication station. The certificate application device transmits the first information with the first signature and the second information with the second signature to the authentication station to receive the OV certificate.

INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD AND PROGRAM (18027597)

Main Inventor

Takuya ODA

Brief explanation

The present invention is an information processing system that allows multiple users to access the same content through a network. It includes a delay measurement device that measures the transmission delay between the input/output device and the central computing machine for each user. A delay adjustment device then adjusts the difference in transmission delay between users to be within a predetermined value.

• The information processing system allows multiple users to access the same content through a network.
• A delay measurement device measures the transmission delay between the input/output device and the central computing machine for each user.
• A delay adjustment device adjusts the difference in transmission delay between users to be within a predetermined value.

Potential applications of this technology:

• Online gaming platforms where multiple players need to have synchronized experiences.
• Video streaming services where users need to watch the same content simultaneously.
• Virtual reality applications where users interact with the same virtual environment.

Problems solved by this technology:

• Ensures that all users have a consistent and synchronized experience.
• Minimizes the impact of transmission delays on user interactions and content consumption.
• Provides a seamless and immersive experience for users accessing content through a network.

Benefits of this technology:

• Improved user experience by minimizing transmission delays and maintaining synchronization.
• Enables real-time collaboration and interaction among multiple users.
• Allows for efficient and effective sharing of resources and content through a network.

Abstract

One aspect of the present invention provides an information processing system in which at least one of a connection between an input/output device and a computing machine or a connection between the computing machine and a central computing machine is made via a network, and a plurality of users uses the same content by using the input/output device via the network, the information processing system including a delay measurement device configured to measure an amount of transmission delay generated between the input/output device and the central computing machine for each of the users, and a delay adjustment device configured to adjust a difference in the amount of transmission delay between the users to be kept within a predetermined value on the basis of the measured amount of transmission delay.

OPTICAL COMMUNICATION APPARATUS, OPTICAL COMMUNICATION SYSTEM AND OPTICAL COMMUNICATION METHOD (18033549)

Main Inventor

Manabu YOSHINO

Brief explanation

The abstract describes an optical communication device that includes an optical switch, a wavelength management control unit, and an optical switch control unit.

• The optical switch is responsible for routing optical signals from one transmission line to another among a plurality of transmission lines.
• The wavelength management control unit allocates various parameters such as wavelength, time, polarized wave, mode, code, frequency, core, core wire, or a combination thereof to a subscriber device based on a control signal. This control signal is transmitted to the subscriber device using a different carrier than the allocated wavelength.
• The optical switch control unit controls the optical switch to ensure that the input optical signal is directed to the appropriate transmission line corresponding to the communication destination.

Potential applications of this technology:

• Optical communication networks: This device can be used in optical communication networks to efficiently route optical signals between different transmission lines.
• Fiber optic systems: It can be utilized in fiber optic systems to manage and allocate different parameters to subscriber devices.
• Telecommunications: The device can enhance the performance and flexibility of telecommunications systems by providing efficient routing and allocation of optical signals.

Problems solved by this technology:

• Efficient signal routing: The optical switch allows for the seamless transfer of optical signals between different transmission lines, improving the efficiency of communication networks.
• Parameter allocation: The wavelength management control unit enables the allocation of various parameters to subscriber devices, ensuring optimal performance and customization.
• Control signal transmission: By using a different carrier for transmitting the control signal, potential interference with the allocated wavelength or other parameters is minimized.

Benefits of this technology:

• Improved network efficiency: The optical switch and control units optimize the routing and allocation of optical signals, leading to improved network efficiency and performance.
• Customization and flexibility: The ability to allocate various parameters to subscriber devices allows for customization and flexibility in optical communication systems.
• Reduced interference: The use of a separate carrier for control signal transmission minimizes potential interference with the allocated wavelength or other parameters, ensuring reliable communication.

Abstract

An optical communication device include: an optical switch configured to output an optical signal input from one transmission line to another transmission line among the plurality of transmission lines; a wavelength management control unit configured to allocate a wavelength, a time, a polarized wave, a mode, a code, a frequency, a core, a core wire, a wavelength that is a combination thereof, or the like to a subscriber device by using a control signal in accordance with the subscriber device and a transfer destination on a path to a communication destination, and transmits the control signal to the subscriber device by using a carrier different from a carrier to which the wavelength or the like is allocated; and an optical switch control unit configured to control the optical switch such that the input optical signal is output to the another transmission line corresponding to the communication destination.