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time-code GENERATOR AND EVENT MARKER FOR CORRELATING CHART AND MAGNETIC-TAPE RECORDS

MEDICAL & BIOLOGICAL ENGINEERING 1974年第6期12卷 857-858页

作者： YOUNG, RA QUEENS UNIV BIOMED ENGN UNITKINGSTONONTARIOCANADA

Conclusion The b.d.c. trace proved easy to read from chart. It was particularly useful in correlating sections of chart records with the corresponding magnetic-tape record using the leading edge of the first bit of the time code as a reference *** system can be used with any chart recorder that has bidirectional event markers and the decoded outputs interface directly with d.t.l. or t.t.l. logic, as employed in most computers.

关键词： time code Event code

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FPGA based time code Generation and Dissemination in a Distributed Control Systems

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IFAC-PapersOnLine 2018年第10期51卷 223-228页

作者： Ray, Soumitra Deb, Alok Kanti Electrical Engineering Department Indian Institute of Technology Kharagpur721302 India

This paper discusses the development of a FPGA based standard time IRIG-B DC (unmodulated) and AC (modulated) code generation cum dissemination system over serial and Ethernet (unicast and multicast mode) network using verilog HDL which in turn trigger all sequential control actions occurring across the entire sensor network based on precise time stamping. Design of external signal conditioning circuitry for IRIG-B AC code is also described. The total development is based on modular approach in a single FPGA board for generation, dissemination, modulation and monitoring facility in case of flight vehicle control. © 2016

关键词： Field programmable gate arrays (FPGA) codes (symbols) Computer hardware description languages Control system synthesis Distributed parameter control systems Flight control systems Sensor networks Strain measurement Flight vehicles Fpga(field programmable gate array) Hardware descriptive languages Sequential control Signal conditioning circuitry time code

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A Method of time code Retrieval for Special Format Surveillance Video Based on File Header Comparison 6

A Method of Time Code Retrieval for Special Format Surveilla...

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6th International Symposium on Digital Forensic and Security (ISDFS)

作者： Lu, Qimeng Shi, Shaopei Xi, Jianhua Zeng, Jinhua Li, Yan Mao, Xiao Minist Justice Shanghai Inst Forens Sci Dept Criminal Technol Shanghai Peoples R China

ISBN: (纸本)9781538634493

Video surveillance has become an important tool in various fields of social security, including criminal investigation, remote defense, information verification, etc. Non-universal video format also brings great challenges to data recovery. We explore a typical method that contains 4 steps for time code retrieval in practical case examination. These 4 steps are A) obtain existing video files, B) analyze the structure of existing video files and find the time field location, C) ascertain the time code location and change pattern and D) export and browse. Confirmed via comparison with 2 sets of questioned special format surveillance video files, this method has proved to be effective.

关键词： Special Format Surveillance Video Data Recovery time code

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Beyond SMPTE time code - The TLX Project

Beyond SMPTE Time Code - The TLX Project

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2018 SMPTE Annual Technical Conference and Exhibition, SMPTE 2018

作者： Symes, Peter Reynolds, Hugh Symes TV Consulting LLC United States Courtyard Electronics Ltd United States

ISBN: (纸本)9781614829607

SMPTE timecode (ST 12) and its transport, storage, display, and association to video and audio, has been a cornerstone of media production since the 1970s. ST 12 is both easy to understand and easy to use;its application is almost universal for media, and the standard has found application in other industries. However, ST 12 is constrained by design choices that, while appropriate at the time, represent substantial shortcomings today. - This paper reports on an ongoing project to define a new time label that is more appropriate for modern workflows and new media. This project is expected to produce a new 'extensible time label' (TLX), to be defined by the ST 2120 suite of documents. While providing all the capabilities of ST12, TLX is intended to accommodate new user requirements and leverage new system capabilities to provide a comprehensive labeling system. - The paper describes the proposed structure of TLX and its components, and a system of Profiles intended to facilitate configuration of TLX labels to meet the needs of diverse applications. © 2018 Society of Motion Picture and Television Engineers, Inc.

关键词： time label time code PTP TLX Digital birth certificate CD46 gene REG1A gene PEAK-TO-PEAK RATIO PTPRU gene Media Production User needs

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time code Generator Series 20,000 - Chrono-Log

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2017年

time code Generator Series 20,000 - Chrono-Log: by published by

关键词： bcd chrono-log: code code generator code generators delayed sync display frequency front panel generator generators modulated carrier output pulse pulse rate rate outputs series sync thumb switches time time code time reading

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Generalized Space-time Line code With Receive Combining for MIMO Systems

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IEEE SYSTEMS JOURNAL 2022年第2期16卷 1897-1908页

作者： Choi, Jihoon Joung, Jingon Korea Aerosp Univ Sch Elect & Informat Engn Goyang 10540 South Korea Chung Ang Univ Sch Elect & Elect Engn Seoul 06974 South Korea

In this article, a generalized space-time line code (GSTLC) is proposed. The proposed GSTLC concurrently transmits multiple data streams obtained by space-time line code encoding and precoding to provide spatial multiplexing and diversity. When full channel state information (CSI) is available to the transmitter and limited CSI is available to the receiver, an optimal precoding matrix is derived for GSTLC with linear combining that is based on the minimum mean square error (MMSE) criterion. Moreover, the detection signal-to-interference-plus-noise ratio (SINR) is derived corresponding to the optimal MMSE precoder. Using the SINR, we propose a receiver combining scheme that selects the best combining matrix, thereby minimizing the bit error rate (BER) from a codebook that includes candidate combining matrices. Through numerical simulations, we demonstrate that the proposed GSTLC with the optimal combiner achieves the theoretical lower bound of BER. In addition, we show that the GSTLC with combiner selection performs better than conventional precoded spatial multiplexing methods in terms of the BER.

关键词： Receivers Signal to noise ratio Precoding Interference Uplink Mean square error methods Design methodology Combiner selection multiple-input multiple-output (MIMO) minimum mean square error (MMSE) space– time code space– time line code (STLC) spatial multiplexing (SM)

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A time-coded multi-concentration microfluidic chemical waveform generator for high-throughput probing suspension single-cell signaling

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Chinese Chemical Letters 2022年第6期33卷 3091-3096页

作者： Yiran Guo Peng Chen Zhaolong Gao Yiwei Li Shunji Li Xiaojun Feng Bi-Feng Liu The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics and Molecular Imaging Key Laboratory Systems Biology ThemeDepartment of Biomedical EngineeringCollege of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China The Key Laboratory of Ministry of Education for Image Processing and Intelligent Control School of Artificial Intelligence and AutomationHuazhong University of Science and TechnologyWuhan 430074China

The cellular response to the complex extracellular microenvironment is highly dynamic in time and type of extracellular *** reconstructing this process and analyzing the changes in receptor conformation on the cell membrane surface and intracellular or intercellular signaling has been a major challenge in analytical chemistry and biophysical *** this paper,a time-coded multiconcentration microfluidic chemical waveform generator was developed for the dynamic signaling probing with single-cell array of high temporal resolution,high throughput,and multi-concentration combination *** on innovative microchannel structure,sophisticated external control methods and multiplexing technology,the system not only allowed for temporally sequential permutations of the four concentrations of stimuli(time code),but also generated pulsed and continuous waveforms at different frequencies in a highly controllable ***,the single-cell trap array was set up to efficiently capture cells in suspension,dramatically increasing throughput and reducing experiment preparation *** maximum frequency of the platform was 1 Hz,and one cell could be stimulated at multiple *** show the ability of the system to investigate rapid biochemical events in high throughput,pulse stimulation and continuous stimulation of different frequencies and different time codes,combined with four concentrations of histamine(HA),were generated for probing G protein-coupled receptor(GPCR)signaling in He La ***,statistical analysis was performed for the mean peak height and mean peak area of the cellular *** believe that the time-coded multi-concentration microfluidic chemical waveform generator will provide a novel strategy for analytical chemistry,biophysics,cell signaling,and individualized medicine applications.

关键词： Microfluidics Dynamic stimulation time code High-throughput Single-cell array

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Rate versus time representation of high-frequency spectral notches in the peripheral auditory system:: A computational modeling study

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NEUROCOMPUTING 2008年第4-6期71卷 693-703页

作者： Lopez-Poveda, Enrique A. Alves-Pinto, Ana Palmer, Alan R. Eustaquio-Martin, Almudena Univ Salamanca Inst Neurociencias Castilla & Leon Salamanca 37007 Spain MRC Inst Hearing Res Nottingham NG7 2RD England Univ Salamanca Dto Informat & Automat Fac Ciencias E-37008 Salamanca Spain

A computational model of the peripheral auditory system is used to explain the paradoxical observation that discriminating between broadband noise sounds with and without high-frequency spectral notches is more difficult at mid-intensities than at lower or higher intensities [A. Alves-Pinto, E.A. Lopez-Poveda, Detection of high-frequency spectral notches its a function of level, J. Acoust. Soc. Am. 118 (2005) 2485-2469.]. The simulations suggest that the discrimination task in question relies on comparing the timing of auditory nerve spikes, hence that high-frequency sounds are represented in the auditory nerve by a time code. They further suggest that the improvement in spectral discrimination at high intensities is associated with inherent inner hair cell nonlinearities. (c) 2007 Elsevier B.V. All rights reserved.

关键词： auditory profile analysis auditory spectral discrimination time code place code phase locking auditory nonlinearity auditory dynamic range inner hair cell nonlinearity spectral notch

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A new video-synchronized multichannel biomedical data acquisition system

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IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING 2000年第3期47卷 412-419页

作者： Zeng, SK Powers, JR Hsiao, HW NIOSH Morgantown WV 26505 USA

This data acquisition system records video frames onto a video tape, and simultaneously acquires biomedical data along with video time codes onto a computer hard disk to achieve a 30 min video-synchronized data recording Kith a summed data rate of 2.16 Mbit/s. A time-code-bridge-file created during acquisition matches each video frame-start with the corresponding index number of the acquired data. The mean synchronization accuracy or the system is 0.22 ms.

关键词： data acquisition multichannel time code video frame-start video synchronization

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Learning heterogeneous delays in a layer of spiking neurons for fast motion detection

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BIOLOGICAL CYBERNETICS 2023年第4-5期117卷 373-387页

作者： Grimaldi, Antoine Perrinet, Laurent U. Aix Marseille Univ CNRS Inst Neurosci Timone 27 Blvd Jean Moulin F-13005 Marseille France

The precise timing of spikes emitted by neurons plays a crucial role in shaping the response of efferent biological neurons. This temporal dimension of neural activity holds significant importance in understanding information processing in neurobiology, especially for the performance of neuromorphic hardware, such as event-based cameras. Nonetheless, many artificial neural models disregard this critical temporal dimension of neural activity. In this study, we present a model designed to efficiently detect temporal spiking motifs using a layer of spiking neurons equipped with heterogeneous synaptic delays. Our model capitalizes on the diverse synaptic delays present on the dendritic tree, enabling specific arrangements of temporally precise synaptic inputs to synchronize upon reaching the basal dendritic tree. We formalize this process as a time-invariant logistic regression, which can be trained using labeled data. To demonstrate its practical efficacy, we apply the model to naturalistic videos transformed into event streams, simulating the output of the biological retina or event-based cameras. To evaluate the robustness of the model in detecting visual motion, we conduct experiments by selectively pruning weights and demonstrate that the model remains efficient even under significantly reduced workloads. In conclusion, by providing a comprehensive, event-driven computational building block, the incorporation of heterogeneous delays has the potential to greatly improve the performance of future spiking neural network algorithms, particularly in the context of neuromorphic chips.

关键词： time code Event-based computations Spiking neural networks Motion detection Efficient coding Logistic regression

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