Abstract: The present disclosure relates to the field Quantum Key distribution (QKD) and discloses an apparatus (100) and method (300) for adjusting the phase modulator's modulating signal time reference in a phase-based QKD system. The QKD system comprises a pulse generator (10) that generates optical pulses and a phase modulator (20) that modulates the phase of each of the pulses. The apparatus (100) comprises abeam splitter/tap (112), a 1-bit delay interferometer (110), two photodetectors (106,108), and a processing device (104). The splitter feeds the phase modulated optical pulses to the interferometer (110). Two photo detectors are connected to the constructive and destructive output legs (110a,110b) of the interferometer (110). The photo detectors' output are then converted to digital signals and fed to the processing device (104).

Abstract: A method for tuning one or more tunable optical transceivers is disclosed herein. A controller assigns a particular wavelength to a tunable optical transceiver of the one or more tunable optical transceivers, where the one or more tunable optical transceivers and the controller are connected via an Inter-Integrated Circuit (I2C) interface. The tunable optical transceiver transmits an optical signal using the particular wavelength, where the particular wavelength is finalized for the tunable optical transceiver when an interrupt at a receiving port of the tunable optical transceiver is received.

Abstract: The present disclosure provides a method and system for configuring an optical time domain reflectometer (OTDR) in a gigabit passive optical networks (PON), characterized by the steps of: collecting network data of the network to be scanned by switch controller to characterize said network; collecting data from various optical network terminals (ONTs) of the gigabit passive optical networks (GPON) by an OTDR and the Switch Controller to form a training database, the training data is used to train the method; optimizing the parameters of the optical time domain reflectometer (OTDR) based on the network data and the training database by a processor provided on the switching controller using machine learning. For point-to-multipoint (PMP) networks such as PON, the present method and system provides optimal set of parameters to configure OTDR before performing trace.

Abstract: In the present invention, a method for searching multilingual keywords in mixlingual speech corpus is proposed. This method is capable of searching audio as well as text keywords. The capability of audio search enables it to search out-of-vocabulary (OOV) words. The capability of searching text keywords enables it to perform semantic search. An advanced application of searching keyword translations in mixlingual speech corpus is also possible within posteriorgram framework with this system. Also, a technique for combining information from text and audio keywords is given which further enhances the search performance. This system is based on multiple posteriorgrams based on articulatory classes trained with multiple languages.

Abstract: The present disclosure relates to a mirrored serial interface (MSI) for accessing peripherals through four wire serial interface. More particularly, the present disclosure is related to serial peripheral protocol with looped back mechanism in which contents of source data line are looped back onto the destination line and compared at every clock edge to ensure data sanity and to assert presence of slave and master device during and between cycles.

Abstract: Methods and systems for selecting a communication channel from a plurality of available channels in an infrastructure basic service set network having a plurality of access points APs comprising: monitoring the available channels for a scan time by a co-located radio station to capture signal level from APs at each channel; calculating weighted channel power level of each channel to determine the channel with minimum power and free channels from the available channels; receiving the signal level of each channel from co-located radio station to processor and calculating weighted channel power level of each channel to select the communication channel, selecting communication channels comprises: identifying free channels; where only one free channel, select the free channel, where plurality, select the free channel with minimum interference less than a predefined value and with lower weighted channel power level, where no free channels, select the channel with minimum weighted channel power level.

Abstract: A method of synchronizing state of a Label Switched Path (LSP) of a Generalized Multiprotocol Label Switching (GMPLS) based optical communication network with that of a data plane of the network is disclosed. The method includes: receiving, at a network device, Resource ReserVation Protocol (RSVP) path objects that include at least one private object, wherein the at least one private object carries information that enables control plane of the network to synchronize at least one node downstream of the LSP; and synchronizing, using the network device, the state of the LSP with state of the data plane based on the at least one private object. The at least one private object can include one or more specific structures that enable the at least one node to uniquely identify and program equipment operatively connected with the at least one node.

Abstract: Embodiments herein relate to a method and an information appliance device having a unique access card for preventing security breach in the information appliance device. A multimedia content server transmits a one-time access key to both the information appliance device and a user of the information appliance device. The user must input the access key to the information appliance device. The information appliance device verifies the access key and provides access to the user for the multimedia services, by activating a periodic activation key upon successful verification of the access key. Therefore, even if unauthorized user tries to skip the access key verification process through modification of access cards used in information appliance device, the unauthorized user cannot access the multimedia service due to lack of the periodic activation key required for activating multimedia service. Hence, security breach such as, cloning or duplication of the access cards will be minimized.

Abstract: In the present invention, a method for searching multilingual keywords in mixlingual speech corpus is proposed. This method is capable of searching audio as well as text keywords. The capability of audio search enables it to search out-of-vocabulary (OOV) words. The capability of searching text keywords enables it to perform semantic search. An advanced application of searching keyword translations in mixlingual speech corpus is also possible within posteriorgram framework with this system. Also, a technique for combining information from text and audio keywords is given which further enhances the search performance. This system is based on multiple posteriorgrams based on articulatory classes trained with multiple languages.

Abstract: Aspects of the present disclosure aim at configuring an optical time domain reflectometry (OTDR) in a central office such that the OTDR is configured to be operatively coupled with and also configured to periodically poll each fiber at defined intervals and compute/store a reflection signature that can be used to compare with future signatures received from subsequent polls of the fiber to determine a fault (e.g., a fiber cut or breakage) between the central office (CO) and one or more optical network unit (ONU) over GIS.

Abstract: Disclosed is a set top box (STB) configured to work with a smart card (SC) wherein the STB is authenticated by an operator who provides the smart card to a user using a One Time Password (OTP). The OTP is generated by the SC and sent via the STB to the operator through a user mobile device operatively coupled with the STB. The operator verifies the sender based upon registered mobile number of the sender, decrypts the received OTP and uses the decrypted OTP to transmit STB specific control messages to the STB and facilitate registration of the SC. Thereafter the STB can receive and decrypt channel data being transmitted by the operator. The SC, STB and the user mobile device have secure communication amongst each other after authentication of each other. Data sent between the user mobile device and the operator is encrypted.

Abstract: Aspects of the present disclosure generally relate to a RF high power amplifier designed for resonance mitigation. A method for resonance mitigation in RF high power amplifier enclosure and an enclosure for RF high power amplifier designed to mitigate resonance is provided. In an aspect, the enclosure can be configured with a metallic post or a grounded metallic post positioned at a suitable location with RF high power amplifier circuit to dampen and shift out resonance. In an aspect, the metallic post can be placed between printed circuit board (PCB) substrate and enclosure lid. Proposed metallic post solution eliminates the need of RF absorber in the design.

Abstract: Aspects of present disclosure relate to a system and method for network traffic slicing for next generation network communications. The network traffic slicing can be enabled to secure a certain amount of capacity of a single network slice, irrespective of the other network slices that co-exist. In an aspect, the proposed system and method for network traffic slicing uses 3GPP (third generation partnership project or any cellular network like 3G, or 2G, or 4G, or 5G) and non-3GPP (comprises of WiMAX or WiFi wireless means) networks depending on the proximity of the two devices, which needs to communicate. Also, the system and method can be configured at a centralized network traffic controller or network device, which can be one or more combinations of a gateway device, routers, switches, servers etc. that can decide mode of communication for enabling communication between IoT devices (for e.g. static or mobile communicable devices) based on different parameters.

Abstract: Aspects of the present disclosure aim at configuring an optical time domain reflectometry (OTDR) in a central office such that the OTDR is configured to be operatively coupled with and also configured to periodically poll each fiber at defined intervals and compute/store a reflection signature that can be used to compare with future signatures received from subsequent polls of the fiber to determine a fault (e.g., a fiber cut or breakage) between the central office (CO) and one or more optical network unit (ONU) over GIS.

Abstract: The concept of profiling the STB (01) through the Smart Cards (02) as per the service provider specific requirements makes towards interoperability. Smart cards (02) are embedded with greater operator specific intelligence. The scheme used in the present invention mainly focuses on downloading of profiling data from smart card (02) to the STB (01) and pushing CAS implementation fully from STB to Smart card (02).

Abstract: The concept of profiling the STB (01) through the Smart Cards (02) as per the service provider specific requirements makes towards interoperability. Smart cards (02) are embedded with greater operator specific intelligence. The scheme used in the present invention mainly focuses on downloading of profiling data from smart card (02) to the STB (01) and pushing CAS implementation fully from STB to Smart card (02).

Abstract: An aspect of the present invention reduces the additional number of signal lines of a bus for control signals by using a set of signal lines to transfer data bits in some durations and to transfer control signals in some other durations. In one embodiment, the same signal lines are used to transfer data in a data transfer phase, and for bus arbitration in a bus arbitration phase. As a result, the total number of signal lines of a bus (bus width) is reduced. According to another aspect of the present invention, an arbitrator block allocates the bus to one of the requesting modules according to an assigned priority and least recently used (LRU) policy.

Abstract: An ATM switch having a plurality of input-ports and a plurality of output ports allowing a plurality of priority levels, which is highly modular allowing expansion of the number of cell buffers in a shared buffer pool, thus efficiently handling bursty traffic of one-to-one and one-to-many destination ports, using the bit slicing concept to reduce the operating speed of the switch, and decrease the cell buffer size requirement per slice along with reducing the number of shared queue memories per slice, aiding cost effective and efficient, very large scale integration (VLSI) implementation. It also allows configurability of input link speeds, taking care of the order of cell delivery to the output ports. The switch on receiving the input cell, searches for a free buffer in the shared pool, then routes the cell into this buffer and indexes the pointer into an output queue called the queue management module which uses a shared pool of queue memories.