20 results about "Time domain multiplexing" patented technology

An audio authentication and identity verification system and method that encodes dynamic cryptographic information across the audible and inaudible spectrum (0 Hz→30 kHz, scalable to 124 kHz). A rolling acoustic signature simultaneously embeds identity, time, date, and GPS location using a hybrid of frequency shift keying (FSK), phase shift keying (PSK), Morse style pulse duration modulation, and time domain multiplexing. To guarantee post-event privacy and integrity, the system further incorporates a dual custody audio architecture in which every authenticated recording is split into complementary bit interleaved segments stored separately, and the decryption key is fragmented via Shamir 3-of-5 secret sharing—preventing unilateral access or tampering. The system establishes a tamper proof, real time, and offline capable authentication layer that functions in air, through conventional microphones, and via dedicated emitter hardware.

A device comprises a control circuit configured to control a plurality of quantum bits. The control circuit comprises a digital-to-analog converter circuit and switching circuitry coupled to an output of the digital-to-analog converter circuit. The switching circuitry is responsive to switch control signals to selectively connect the output of the digital-to-analog converter circuit to one or more of a plurality of signal paths to generate control signals to control the plurality of quantum bits.

This application discusses systems and methods for synchronization signal block (SSB) to random access channel (RACH) occasion (RO) association to enable use of physical random access channel (PRACH) repetition. A network (e.g., a radio access network (RAN)) may provide RACH configuration information to a user equipment (UE) that enables the UE to identify a set of configured ROs. In some cases, the UE uses an RO group that includes a plurality of time domain multiplexed (TDM) ROs that are used for PRACH repetition of one or more random access procedures for a corresponding SSB. The UE may use the RACH configuration information to determine a mapping of the RO groups to the configured RO, determine a repetition level for each of the RO groups, identify a correspondence between an SSB of an RO group and the repetition level of the RO group, and the like. Other embodiments that do not use a formal RO group are also described.

An optical time domain multiplexing system and method of driving a time division multiplexed light field display to output a multiplexed light field image. The time domain multiplexing device for use in light field display comprises a series of optical components to manipulate the polarization of light, resulting in independent time states to create a multiplexed light field display.

A lithographic apparatus (100) includes a projection system and an inspection apparatus (400). The projection system projects an image of structures of a patterning device onto a substrate (420). The inspection apparatus (400) includes a photodetector (426), a demultiplexer (428), and an illuminator section with a multiplexer (506). The illuminator section directs a beam of illumination toward a target on the substrate. The multiplexer (506) transmits first and second portions of the beam via first and second pulses (510', 512', 514'), respectively. The first portion has a first illumination parameter and the second portion has a second illumination parameter. The multiplexer (506) interleaves, in time, the first and second pulses (5101, 512', 514'). The photodetector (426) receives pulses of scattered illumination from the target to generate a measurement signal based on the pulses of the scattered illumination. The demultiplexer (428) analyses the measurement signal to discriminate portions of the measurement signal according to illumination parameter based on timing of the pulses of the scattered illumination.

A physical random access channel transmitting method and apparatus, the method including: a terminal equipment transmits a second number of PRACHs on a first number of valid ROs, the first number of valid ROs being time-domain multiplexed, or the first number of valid ROs being frequency-domain multiplexed, or the first number of valid ROs being time-domain and frequency-domain multiplexed, and the first number and the second number being positive integers greater than or equal to 2.

A communications network for a vehicle comprising: a central processing node; a zonal node; an Ethernet network coupling the central processing node to the zonal node; and an edge network coupled to the zonal node, the edge network comprising a time domain multiplexing (TDM) bus and a plurality of edge transducers coupled to the TDM bus, wherein the zonal node comprises a network bridge for bridging transducer data received from the TDM bus to the Ethernet backbone network, wherein the network bridge comprises: interface circuitry for interfacing the network bridge with the TDM bus; clock recovery circuitry for recovering a clock signal for use by the edge network from an Ethernet frame received from the Ethernet network, wherein a TDM cycle of the TDM bus is synchronised to the recovered clock signal; acoustic data receiver circuitry coupled to the interface circuitry by a first low-latency data path, wherein the acoustic data receiver circuitry is configured to transmit acoustic data contained in Ethernet frames received at the network bridge from the Ethernet network to the interface circuitry; and acoustic data transmitter circuitry coupled to the interface circuitry by a second low-latency data path, wherein the acoustic data transmitter circuitry is configured to transmit Ethernet frames containing acoustic data received at the interface circuitry from the edge network to the Ethernet network.

Various aspects of this disclosure relate generally to wireless communication. In some aspects, a user equipment (UE) may use a low peak-to-average power ratio (PAPR) sequence generator to determine one or more demodulation reference signal (DMRS) scrambling sequences, each of the one or more DMRS scrambling sequences corresponding to a corresponding port among one or more ports associated with downlink multiple-input multiple-output (MIMO) communication, wherein the downlink MIMO communication is based on Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM). The UE may receive the downlink MIMO communication including DMRS according to an in-slot DMRS mode indicating one or more time-domain multiplexed symbols, each of the one or more time-domain multiplexed symbols being at least partially assigned at least one of the one or more DMRS scrambling sequences. Numerous other aspects are described.

A method and apparatus for transmitting a physical random access channel are provided. The method includes a terminal device transmitting a second quantity of PRACH with a first quantity of active RO, wherein the first quantity of active RO is time-domain multiplexed, or the first quantity of active RO is frequency-domain multiplexed, or the first quantity of active RO is time-domain and frequency-domain multiplexed, and the first quantity and the second quantity are positive integers of 2 or more.

Embodiments provided herein generally include apparatus, plasma processing systems, and methods for generating a waveform for plasma processing a substrate in a processing chamber. One embodiment includes a waveform generator having voltage source circuitry, a first switch coupled between the voltage source circuitry and a first output node of the waveform generator, the first output node configured to be coupled to a chamber, and a second switch coupled between the first output node and an electrical ground node. The waveform generator also includes a third switch coupled between the voltage source circuitry and a second output node of the waveform generator, the second output node configured to be coupled to the chamber, and a fourth switch coupled between the second output node and the electrical ground node.

This application discusses systems and methods for synchronization signal block (SSB) to random access channel (RACH) occasion (RO) association to enable use of physical random access channel (PRACH) repetition. A network (e.g., a radio access network (RAN)) may provide RACH configuration information to a user equipment (UE) that enables the UE to identify a set of configured ROs. In some cases, the UE uses an RO group that includes a plurality of time domain multiplexed (TDM) ROs that are used for PRACH repetition of one or more random access procedures for a corresponding SSB. The UE may use the RACH configuration information to determine a mapping of the RO groups to the configured RO, determine a repetition level for each of the RO groups, identify a correspondence between an SSB of an RO group and the repetition level of the RO group, and the like. Other embodiments that do not use a formal RO group are also described.

Aspects of the present disclosure describe systems and methods that advantageously enable vibration-induced optical phase measurement at a centralized optical line terminal (OLT) in a PON architecture. In sharp contrast to existing distributed fiber sensing systems and methods, the optical phase measurements of the present disclosure do not rely on back scattering mechanisms and maintain a sufficient optical signal to noise ratio (OSNR) even after round-trip splitting loss in the PON.

A physical random access channel transmission method and apparatus, the method comprising: a terminal device sends a second number of PRACHs on a first number of ROs, the first number of ROs being time-domain multiplexed, or the first number of ROs being frequency-domain multiplexed, or the first number of ROs being time-domain and frequency-domain multiplexed, the first number of ROs being time-domain and frequency-domain multiplexed, or the first number of ROs being time-domain and frequency-domain multiplexed; the first number and the second number are positive integers greater than or equal to 2.

An optical time domain multiplexing system and method of driving a time division multiplexed light field display to output a multiplexed light field image. The time domain multiplexing device for use in light field display comprises a series of optical components to manipulate the polarization of light, resulting in independent time states to create a multiplexed light field display.

The application discloses a kind of certainty wireless communication method, system and device based on active resource planning, belong to 6G mobile communication field.The application utilizes the global predictability of network side running all user equipment protocol safety state machine (PSSM) under dynamic security foundation (DSF) framework, accurately obtains the logical decision time sequence of each service flow in future planning window, directly allocates deterministic time-frequency resource for each logical decision time by resource allocation algorithm, generates resource use time table and issues to user equipment.User equipment transmits and receives according to table in planning window, without real-time signaling interaction.The application also provides three kinds of implementation modes of explicit planning, implicit planning (derived by planning key) and temporary planning (switching dedicated), and works cooperatively through resource pool division and mapping table version control and two-step arbitration.Resource use time table allows multiple user equipment to share the same physical resource at different logical times through time domain multiplexing, fundamentally eliminates resource collision, realizes zero signaling, zero queuing, sub-millisecond switching interruption deterministic communication, provides complete deterministic scheduling system from "security bottom" to "extreme performance" for 6G network.

The invention discloses a financial community identification method, device, equipment and program product, and the method comprises the steps: obtaining transaction data, constructing a transaction network diagram based on the transaction data, determining an adjacent matrix of the transaction network diagram to obtain a quantum state code, carrying out the Gaussian glass color sampling of the quantum state code based on a time domain multiplexing photon quantum circuit, and obtaining a quantum state code; the sub-graph forming probability corresponding to each node in the transaction network graph is obtained, and the time domain multiplexing photon quantum circuit comprises a space interferometer layer and a time delay circulation layer. And determining the financial community based on the probability of each node. In the invention, the space interferometer layer can expand the number of effective optical modes, and a large number of beam splitters and phase modulators are not needed, so that the hardware complexity is reduced. Through the time delay cycle layer, all optical modes are detected, the number of detectors is reduced, and the hardware cost is reduced. Based on the parallelism of quantum sampling, the time complexity of financial community identification is reduced, and the real-time performance is ensured.

A system for transmitting primary and secondary data, the system comprising: a bus; a parent node coupled to the bus; and a plurality of child nodes each coupled to the bus, wherein: the parent node is configured to periodically transmit a time-domain multiplexing (TDM) periodic beacon to the bus, wherein the TDM periodic beacon signals the start of a primary data transmission interval, and wherein the primary data transmission interval is a period reserved for the transmission of primary data by the parent node and the plurality of child nodes; each of the parent node and the plurality of child nodes is operable to transmit primary data of a current TDM beacon period associated with the TDM periodic beacon to the bus during the primary data transmission interval in response to the TDM periodic beacon; and the parent node and the plurality of child nodes are operable to transmit secondary data to the bus during a secondary data transmission interval between the end of the primary transmission interval and the transmission of the next TDM periodic beacon by the parent node.

Various aspects of the present disclosure relate to utilizing time-domain multiplexing of both information and reference / sensing signals between transmission nodes and receiving nodes and over available physical resources. In some examples, the present disclosure describes a scalable transform-based multiplexing precoder for joint communications and sensing signals.

The embodiments provided herein generally include apparatus, plasma processing systems, and methods for generating waveforms for plasma processing of a substrate in a processing chamber. One embodiment includes a waveform generator having a voltage source circuit system, a first switch coupled between the voltage source circuit system and a first output node of the waveform generator, and a second switch coupled between the first output node and an electrical ground node, the first output node being configured to be coupled to the chamber. The waveform generator further includes a third switch coupled between the voltage source circuit system and a second output node of the waveform generator, and a fourth switch coupled between the second output node and an electrical ground node, the second output node being configured to be coupled to the chamber.

A communications network for a vehicle comprising: a central processing node; a zonal node; an Ethernet network coupling the central processing node to the zonal node; and an edge network coupled to the zonal node, the edge network comprising a time domain multiplexing (TDM) bus and a plurality of edge transducers coupled to the TDM bus, wherein the zonal node comprises a network bridge for bridging transducer data received from the TDM bus to the Ethernet backbone network, wherein the network bridge comprises: interface circuitry for interfacing the network bridge with the TDM bus; clock recovery circuitry for recovering a clock signal for use by the edge network from an Ethernet frame received from the Ethernet network, wherein a TDM cycle of the TDM bus is synchronised to the recovered clock signal; acoustic data receiver circuitry coupled to the interface circuitry by a first low-latency data path, wherein the acoustic data receiver circuitry is configured to transmit acoustic data contained in Ethernet frames received at the network bridge from the Ethernet network to the interface circuitry; and acoustic data transmitter circuitry coupled to the interface circuitry by a second low-latency data path, wherein the acoustic data transmitter circuitry is configured to transmit Ethernet frames containing acoustic data received at the interface circuitry from the edge network to the Ethernet network.