Download ppt on pulse code modulation video

Chapter 2 Amplitude Modulation.

frequency. 2-3: Sidebands and the Frequency Domain Sideband Calculations Single-frequency sine-wave modulation generates two sidebands. Complex wave (e.g. voice or video) modulation generates a range of sidebands. The upper sideband (fUSB) and the lower sideband/a) Fifty percent modulation. (b) One hundred percent modulation. 2-3: Sidebands and the Frequency Domain Pulse Modulation Continuous-wave (CW) transmission can be achieved by turning the carrier off and on, as in Morse code transmission. Continuous /


Chapter 2 Amplitude Modulation. Topics Covered in Chapter 2 2-1: AM Concepts 2-2: Modulation Index and Percentage of Modulation 2-3: Sidebands and the.

. 2-3: Sidebands and the Frequency Domain Sideband Calculations – Single-frequency sine-wave modulation generates two sidebands. – Complex wave (e.g. voice or video) modulation generates a range of sidebands. – The upper sideband (f USB ) and the /. (a) Fifty percent modulation. (b) One hundred percent modulation. 2-3: Sidebands and the Frequency Domain Pulse Modulation – Continuous-wave (CW) transmission can be achieved by turning the carrier off and on, as in Morse code transmission. – Continuous wave/


GODIAN MABINDAH RUTHERFORD UNUSI RICHARD MWANGI.  Differential coding operates by making numbers small. This is a major goal in compression technology:

and video signals.  Formally written, DPCM compression method can be conducted for intra-frame coding and inter- frame coding.  Intra-frame coding exploits spatial redundancy and inter-frame coding exploits temporal redundancy.  In the intra-frame coding the / If the input is binary 0. Then one step is subtracted from the delayed signal.  Adaptive Differential Pulse Code Modulation (ADPCM) is a lossy compression format that is implemented for XAudio2 to provide additional features for specifying the /


SUBELEMENT T8 Modulation modes: amateur satellite operation; operating activities; non-voice communications [4 Exam Questions - 4 Groups] 1Modes 2014.

5 MHz above the video carrier. The Luminance, Chrominance and Audio carriers are visible in the spectrum plot at left T8A01 - Which of the following is a form of amplitude modulation? A. Spread-/ using amateur frequencies? A. Voice identification must be transmitted every 10 minutes B. Morse code ID must be sent once per hour C. A label indicating the licensee’s name/ T8D06 - What does the abbreviation PSK mean? A. Pulse Shift Keying B. Phase Shift Keying C. Packet Short Keying D. Phased Slide Keying 107Modes T8D06/


Multimedia – Digital Audio & Video. CSC1720 – Introduction to Internet2 Outline Audio / Video on the Web Audio / Video on the Web Basic Digital Audio.

of the Internet. It is part of the Internet. –Radio Stations –Music, sound clips –Streaming Audio / VideoVideo conferencing –Digital Cameras –Animation on the Web Shockwave, Flash Shockwave, Flash CSC1720 – Introduction to Internet4 Basic Terms/used to represent information.signal CSC1720 – Introduction to Internet6 Digital Signal Use Pulse Code Modulation (PCM) to represent an audio signal by digital data. Use Pulse Code Modulation (PCM) to represent an audio signal by digital data. CSC1720 – /


This Presentation is provided to you by:

Standard Welding Procedures Software for AWS and ASME Codes Viwek Vaidya February 12th 2008 CWA Toronto Chapter/”& 0.035” ) GMAW – Aluminum welding – modulated pulse 10 drops /pulse 1 drop /pulse Pollution of gas Porosity level spray pulse Modulated Pulsed arc Spray modulated (interrupted spray) Addition of Oxygen to argon increases arc/from Too complex for users Too complex for producers ALMIG ALTIG ALFLUX Conclusions Video imaging of the welding arc shows that progressive increase in oxidation potential of /


Digital Video Broadcasting tMyn1 DVB Digital Video Broadcasting DVB systems distribute data using a variety approaches, including by satellite (DVB-S,

Transport Stream and Generic Stream Encapsulation (GSE) ModesConstant Coding & Modulation Variable Coding & Modulation and Adaptive Coding & Modulation FECReed Solomon (RS)LDPC + BCH InterleavingBit-InterleavingBit- Time- and Frequency-Interleaving ModulationSingle Carrier QAMCOFDM PilotsNot ApplicableScattered and Continual Pilots Guard IntervalNot Applicable1/64 or 1/128 Modulation Schemes 16- to 256-QAM16- to 4096-QAM DVB-C DVB-C2 Digital Video Broadcasting tMyn50 Main features of the DVB-S2: Source/


Basic FPGA Configuration

architecture courses Hardware description language courses Basic FPGA architecture, Basic HDL Coding Techniques, and other Videos! Basic FPGA Configuration Part 2 Welcome If you are new to FPGA design, this module will help you understand the configuration process and some more advanced / Clear Configuration Memory Configuration memory is cleared any time the device is powered up or after the PROGRAM_B pin is pulsed Low There is a minimum length of time PROGRAM_B must be low Can be held low as long as you/


Analog-to-Digital Conversion

Information from different source can be interleaved to transmit all of the information over a single channel PCM(Pulse Code Modulation) Definition PCM is essentially analog to digital conversion of a signal type where the information contained in the/PCM is so popular ? PCM requires much wider bandwidth But, Inexpensive digital circuitry PCM signal from analog sources(audio, video, etc.) may be merged with data signals(from digital computer) and transmitted over a common high-speed digital communication /


1 Synthetic-Aperture Radar (SAR) Basics. 2 Outline Spatial resolution Range resolution Short pulse system Pulse compression Chirp waveform Slant range.

pulse duration. So long pulses are better for signal reception c = speed of light,  r = range resolution,  = pulse duration, B = signal bandwidth 11 Pulse compression, the compromise Transmit a long pulse that has a bandwidth corresponding to a short pulse Must modulate or code the transmitted pulse/ of the frequency measurement 20 Pulse compression example (cont.) With stretch processing a reduced video signal bandwidth is output from the analog portion of the radar receiver. video bandwidth, B vid = k/


Charts from Stallings, modified and added to1 Communications Systems, Signals, and Modulation Session 2B Nilesh Jha.

video, or digitally coding the digital source data for data compression --- significant savings -- lossy or not lossy Channel Coding and Decoding Critically important in wireless, it digitally inserts or modifies bits to help minimize the effects of channel induced errors - error detection and/or error correction codes Modulate/propagate analog and digital data Created and formed through modulation Digital Signals (Stallings) Stallings: a sequence of voltage pulses that may be transmitted over a copper wire /


Chapter 21 Frequency Modulation GMSK Modulation DSP C5000 Copyright © 2003 Texas Instruments. All rights reserved.

Modulations  Baseband and bandpass signalling are used to transmit data on physical channels such as telephone cables or radiofrequency channels.  The source of data (bits or symbol) may be a computer file or a digitized waveform (speech, video/Modulation, Expression for the Modulated Signal x(t) Normalization a k = Binary data = +/- 1 h = Modulation index = 0.5 s(t) = Gaussian frequency shaping filter s(t)= Elementary frequency pulse/ rights reserved. ESIEE, Slide 34 Coding and Wrapping the Phase Table  /


1 S-72.244 Modulation and Coding Methods Introduction / Overview into linear system analysis.

2001 Introduction Linear modulation Exponential modulation Carrier wave systems Noise in carrier wave systems Revision I Sampling and pulse coded modulation I Sampling and pulse coded modulation II Baseband digital transmission Error control coding I Error control coding II Bandpass digital /speech” –Bursts –Amplitude varies –Frequency (phase) varies –Many other practical sources are bursty as video signals data packets (for instance in Ethernet) 12 Time domain representation can only seldom reveal small /


Integrating Voice, Video, and Data Chapter 10. Learning Objectives Explain analog and digital video technologies Describe audio file technologies Explain.

Predicted Encoding Bidirectional Interpolation MPEG Levels MPEG Video Playback Options Store on server for clients to download as a file and play using MPEG player software Streaming the file over a network link Audio File Technologies Algebraic-Code-Excited Linear Prediction (ACELP) Audio Code Number 3 (AC-3), which is Dolby digital surround sound Adaptive Differential Pulse Code Modulation (ADPCM) Audio Interchange File Format (AIFF) continued/


RICO HARTONO JAHJA 20127733 SOURCE CODING: PART IV.

Some parameters of audio compression Audio compression methods: Adaptive Differential Pulse-Code Modulation Subband-Partioned, Adaptive Differential Pulse-Code Modulation Codebook-Excited Linear-Predictive Coding (CELP) MPEG Layers I,II, and III 11 ADAPTIVE DIFFERENTIAL PULSE-CODE MODULATION Telephone speech processing Inputs: 64 kbps Outputs: 16,24,32, and 40 kbps 12 SUBBAND-PARTIONED ADAPTIVE DIFFERENTIAL PULSE-CODE MODULATION Wideband speech-coding standard Using low-pass and high-pass filter to separate/


Common Pathologies of the Brain: Preparing for ICD-10-CM/PCS

pharmacologically resistant, treatment resistant, refractory (medically), and poorly controlled (acceptable for coding Intractable) Status epilepticus -Dr. must document w, w/o Recurrent or continuous/to head; may be transient amnesia, vertigo, nausea, weak pulse, and rapid/slow respiration http://en.wikipedia.org/wiki/File:Concussion_mechanics/ Module. http://www.nlm.nih.gov/medlineplus/tutorials/traumaticbraininjury/htm/index.htm Getting It: A Disease... A Vaccine. National Meningitis Association. Video in/


School of Computer Science & Information Technology G6DPMM - Lecture 10 Analogue Video.

Video signal (RGB, Component or Composite) is written to magnetic tape. Audio track at top of tape (one or two channels). Audio track at top of tape (one or two channels). Control track at bottom of tape - contains synchronisation pulses. Control track at bottom of tape - contains synchronisation pulses. Output from tape recorder by modulation/ codes Note time codes Transfer to tape (“wet-gating”) Transfer to tape (“wet-gating”) Video Video Professional video usually stored on betacam Professional video /


A project proposal on Residual DPCM for improving Inter Prediction in HEVC for Lossless Screen Content Coding Under the guidance of Dr. K. R. Rao For the.

Prediction Units PB: Prediction Block. QP: Quantization Parameter RDPCM : Residual Differential Pulse code Modulation. SAO: Sample Adaptive Offset. TB: Transform Block. TU: Transform Unit. VCEG: Video Coding Experts Group. 5 Objective of the Project We propose the mathematical implementation of Inter Residual Differential Pulse Code Modulation (inter RDPCM) applied to motion compensated residuals in lossless screen content coding (SCC) scenarios. Two additional tools are proposed for inter RDPCM: Prediction/


A final project report on Residual DPCM for improving Inter Prediction in HEVC for Lossless Screen Content Coding Under the guidance of Dr. K. R. Rao For.

Prediction Units PB: Prediction Block. QP: Quantization Parameter RDPCM : Residual Differential Pulse code Modulation. SAO: Sample Adaptive Offset. TB: Transform Block. TU: Transform Unit. VCEG: Video Coding Experts Group. 6 Objective of the Project We propose the mathematical implementation of Inter Residual Differential Pulse Code Modulation (inter RDPCM) applied to motion compensated residuals in lossless screen content coding (SCC) scenarios. Two additional tools are proposed for inter RDPCM: Prediction/


Basic Communications Systems Class 2. Today’s Class Topics Finish up – Data and Signals Analog Data to Digital Signals Analog Data to Modulated Analog.

convert analog data into a digital signal, there are two basic techniques: Pulse code modulation Delta modulation Data Communications and Computer Networks Chapter 2 Pulse Code Modulation The analog waveform is sampled at specific intervals and the “snapshots” are / into homes and businesses. Designed to bypass the local loop telephone line. Transmits voice, data and video over high frequency radio signals. Data Communications and Computer Networks Chapter 3 Data Communications and Computer Networks /


111 Lecture 10 Basic Modulation Techniques (VI) Fall 2008 NCTU EE Tzu-Hsien Sang.

still found in components such as ADC. 4 Analog pulse modulation: A pulse train is used as the carrier wave. Some characteristic feature of each pulse (e.g., amplitude, duration, or position) is used to represent message samples. PAM – pulse amplitude PDM – pulse duration PPM – pulse position Digital Pulse Modulation: Messages are discrete-amplitude (finite levels) samples. DM – delta modulation PCM – pulse-code modulation 5 6 PAM 7 The “conceptual” demodulation scheme: The/


Technician License Course Chapter 5 Lesson Plan Module 11 – Transmitters, Receivers and Transceivers.

varies with manufacturer) 2014 Technician License Course Microphones and Keys Morse code –Straight key –Electronic keyer and paddle –Semi-automatic (Bug) /limiter (NL) Simply limits maximum volume of a noise pulse 2014 Technician License Course Receiver Controls and Functions Preamplifier /. Tone squelch B. Carrier squelch C. CTCSS D. Modulated carrier T2B03 HRLM (5-7) Which of the following / License Course A. A special transmission format limited to video signals B. A system used to encrypt command signals/


Speech Coding EE 516 Spring 2009

more evenly G.711 The most commonplace codec If uniform quantization Used in circuit-switched telephone network PCM, Pulse-Code Modulation If uniform quantization 12 bits * 8 k/sec = 96 kbps Non-uniform quantization 64 kbps DS0 rate/ call center agents using VoIP phones can work from anywhere Integration with other services available over the Internet, including video conversation, message or data file exchange in parallel with the conversation, audio conferencing, managing address books Potential quality /


© Irene Mueller EdD, RHIA May 2, 2013

to cerebrum, but NOT in cerebrum Right vs Left for coding Basilar artery Carotid (Common, Internal) External does NOT feed/ around 7 to 13 pulses/second Theta - state of somnolence w/reduced consciousness +/- 4 to 7 pulses/second Delta - unconsciousness,/policies-tbi-documents/tbi-trng-modules-workbks/training-module-1-brain-101 Gray, H. Anatomy of the Human Body./ N. ICD10 Session 11 Chapter 6. Codapedia. 32 Minute video. http://codapedia.com/article_548_ICD-10-Session-11-Chapter-Six-Diseases/


Module 5 Hardware.

CD-R), erase and rewrite data onto CD-RW disks. DVD (digital video disks) store & distribute all kinds of data. They hold between 3.8/its internal clock The clock is a timing device that produces electrical pulses to synchronize the computer’s operations. A computer’s clock speed/ information can have two values: 1 or 0 can represent numbers, codes, or instructions On/off Bits as Numbers Each switch can be used/To Know – Module 5 Vocabulary/definitions Truth tables / circuits From a description, write truth/


Dr. Nawaporn Wisitpongphan

WAN with Centralized Call Processing Model Multisite WAN with Distributed Call Processing Model Sensitivity to Packet Loss Video Media Application Models Codecs Analog VoiceDigital Signal Pulse-Code Modulation (PCM) (G.711) Filtering (Human’s speech Frequency 300Hz-3400Hz) Sampling (According to /Nyquist’s Theorem @ 2  Max Freq) Digitizing or Quantizing Encoding Pulse-Code Modulation (PCM) (G.711) Analog speech is sampled @8000 Hz Quantized at 8 bits/sample Thus, /


Outline Revisit Analog Modulation Schemes Amplitude Modulation (AM) Frequency Modulation (FM) Analog-to-Digital Conversion - Sampling Digital Modulation.

, Inc., 1998 From Analog to PCM Figure 5-19 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998 Pulse Coded Modulation Nyquist’s Sampling Theorem A band-limited signal of finite energy, which has no frequency components higher than W Hertz, /24) KHz will be covered by the amplitude modulated signal. Tutorial 3- Consider the video signal that has a frequency content between 0 Hz and 6 MHz. What is the required transmission bandwidth if Frequency Modulation is used with a maximum frequency deviation of/


Modulation                                                                 Digital data can be transmitted via an analog carrier signal by modulating one.

with the use of high frequency carrier, which is modulated with the digital signals, video and sound. The transmitting device uses different carrier frequency/pulse being equal to the amplitude of the original analogue signal at the sampling instant. The resulting signal is thus known as a pulse amplitude modulated/encoding POLAR: Same as RS-232-C standard.                                                              Digital encoding MANCHESTER Coding: High-to-Low mid-bit transition for 0 input with the clock/


Introduction to Multimedia1 ICS 218 -Multimedia Systems and Applications Lecture 2 - Audio/Image/Video Representation Prof. Nalini Venkatasubramanian

Representation of Sound zBasic Image Concepts zImage Representation and Formats zVideo Signal Representation zColor Encoding zComputer Video Format Introduction to Multimedia3 Basic Sound Concepts zAcoustics xstudy of sound - generation, transmission and reception/ Layer 3) Introduction to Multimedia17 Computer Representation of Voice zBest known technique for voice digitization is pulse-code-modulation (PCM). yConsists of the 2 step process of sampling and quantization. yBased on the sampling theorem/


Technician License Course Chapter 5 Operating Station Equipment Lesson Plan Module 11: Transmitters, Receivers and Transceivers.

Too much gain or compression can cause problems. Splatter Over-deviation Over-modulation Transmitter Controls and Functions Automatic Level Control (ALC). –Automatically limits / the computer CPU and the video display B. The sound card records the audio frequency for video display C. The sound card/T8D06) A. Pulse Shift Keying B. Phase Shift Keying C. Packet Short Keying D. Phased/What code is used when sending CW in the amateur bands? (T8D09) A. Baudot B. Hamming C. International Morse D. Gray What code is /


Module 4. Methods, systems and devices for revealing and measurement of aircraft co- ordinates. Struggle against hindrances. Mono- pulse radar-location.

processors VLSI technology: Monopulse Azimuth Range Code Assembler Target load: Average 600/scan (120/s) (900/scan option) Peak 350/s Standby readiness: Software coupled (hardware option) Extractors/Plot Processor Video clock I/P: 16 MHz Decode/to each other by a VME Bus. PROCESSOR MAIN FUNCTIONS Uplink control: Sectorial control of Tx power Pulse to pulse modulation PRF selection Interlace management Interrogation staggering Interrogation modes management Frame management (SIR-S version) Downlink Control: /


EEE2009 Communications Contents Introduction to Communication Systems

, PAM, PPM, and PWM. Principles of Noise Random variables, White Noise, Shot, Thermal and Flicker Noise, Noise in cascade amplifiers Pulse Code Modulation PCM and its derivatives, Quantising Noise, and Examples Digital Communication Techniques ASK, FSK, PSK, QPSK, QAM, and M-ary QAM. Case/ In AM, the modulating signal (the message signal) m(t) is impressed on to the amplitude of the carrier. Message Signal m(t) In general m(t) will be a band of signals, for example speech or video signals. A notation or /


Digital Transmission & Analog Transmission. 4.#2 1. DIGITAL-TO-DIGITAL CONVERSION Digital Data -> Digital Signal Three techniques: 1.line coding (always.

-TO-DIGITAL CONVERSION The tendency today is to change an analog signal to digital data. 1.pulse code modulation 2.delta modulation. Figure 4.21 Components of PCM encoder According to the Nyquist theorem, the sampling rate must/ Figure 5.12 Concept of a constellation diagram Figure 5.13 Three constellation diagrams QAM – Quadrature Amplitude Modulation Modulation technique used in the cable/video networking world Instead of a single signal change representing only 1 bps – multiple bits can be represented/


Modul – 2 Sistem Transmisi

the variations of another physical quantity representing information. ITU T G.701 : vocabulary of digital transmission and multiplexing, and pulse code modulation (PCM) terms, Karakteristik : Amplitudo Frekuensi Phase TE-09-1313-02-Transmisi-1 Sinyal Analog (2) + - Amplitudo/Suara / Voice : percakapan (speech) , musik Tanda-tanda / isyarat Tulisan ( text ) Gambar : diam , bergerak ( video ) Gabungan ( Multimedia ) TE-09-1313-02-Transmisi-1 Characteristics of signal TE-09-1313-02-Transmisi-1 NOTE – /


Chapter 6 – Modulation Techniques for Mobile Radio

video) in a single transmission channel 3) Improved security (e.g., encryption) → deters phone cloning + eavesdropping 4) Error coding is used to detect/correct transmission errors 5) Signal conditioning can be used to combat hostile MRC environment 6) Can implement mod/dem functions using DSP software (instead of hardware circuits). Choice of digital modulation/ and occupied BW → as R ↑, then BW ↑ For a digital signal : each pulse or “symbol” having m finite states represents n = log2 m bits/symbol → e.g/


Modulation Techniques for Mobile Radio

many advantages Robustness to channel impairments Easier multiplexing of variuous sources of information: voice, data, video. Can accommodate digital error-control codes Enables encryption of the transferred signals More secure link CS 515 © Ibrahim Korpeoglu Digital Modulation The modulating signal is respresented as a time-sequence of symbols or pulses. Each symbol has m finite states: That means each symbol carries n bits of information/


Computer Networks Digitization. Spring 2006Computer Networks2 Transfer of an Analog Signal  When analog data (voice, pictures, video) are transformed.

2006Computer Networks2 Transfer of an Analog Signal  When analog data (voice, pictures, video) are transformed into analog electrical signal and transmitted through the media, the transmission/ level means lower quantization noise and more bits per sample. Spring 2006Computer Networks13 Pulse Code Modulation (PCM)  The process of sampling, quantization, binary encoding and digita-to digital encoding is known as pulse code modulation  PCM is usually used to transform voice signals.  Voice data (phone/


1 The Leader in Industrial Data Communication Solutions Training: Introduction to Copper Wire Modems PN: 154-10000-001 Video PN: 158-10000-001.

Factory pre-configured for your application 4 Modem?  Modulator – Demodulator  Used for short and long distance data /pulse), and synchronization is guaranteed. Techniques exist to merge the timing signal with the data so that only a single channel is required. This is especially useful when synchronous transmissions are to be sent through a modem. Two methods in which a data signal is self- timed are nonreturn-to-zero and biphase Manchester coding/Wire Modems PN: 154-10000-001 Video PN: 158-10001-001 25 /


Synchronized Strobe for Video Camera Jeff Baskett & Jason Zubo Project Advisor: Dr. Irwin.

- 88us Mark after break - 8 us Start code - 44us Start bit for data Stop Bits for /Video Camera Module –On loan from ME department –Sync output was not functional - embedded in video signal Block Diagram Reflected Light Viewed Image Sync Pulse Circuitry Video Recorder Sensor Power Compensation Strobe Rs-485 Interface Microprocessor Image Sync Pulse Circuitry Converts Video signal into sync signal Uses Precision Rectifier, inverter and Schmitt Trigger Sync Pulse Circuitry Video SignalSync Pulse Sync Pulse/


U N C L A S S I F I E D Electrical Codes and Standards for R&D Lloyd Gordon August 7, 2007 Los Alamos National Laboratory.

Leadership Training Research Resources Library – Texts, articles – Codes and standards – Videos – Training materials – DOE electrical safety archives Equipment –/modules and leadership in AHJ Training Hands-on training for: – Use of PPE – Use of detection technologies – Hazardous energy control – Unlisted electrical equipment inspection and approval – Methods for safing R&D equipment (capacitors, magnets, etc.) Research (for the future!) Determine hazards of pulsed and dc arcs Test PPE for use around pulsed/


JPEG -595-. Motivations: Motivations: 1.Uncompressed video and audio data are huge. In HDTV, the bit rate easily exceeds 1 Gbps. --> big problems for.

The compression ratio of lossless methods (e.g., Huffman, Arithmetic, LZW) is not high enough for image and video compression, especially when distribution of pixel values is relatively flat. 2. The compression ratio of lossless methods (e.g., / JPEG). DC component is large and varied, but often close to previous value (like lossless JPEG). -628- Differential Pulse Code Modulation (DPCM) on DC component Encode the difference from previous 8x8 blocks -- DPCM Encode the difference from previous 8x8 blocks /


Predictive Coding https://store.theartofservice.com/the-predictive-coding-toolkit.html.

coding-toolkit.html Video compression - Coding methods 1 Other types of lossy compressors, such as the linear predictive coding (LPC) used with speech, are source-based coders https://store.theartofservice.com/the-predictive-coding/lossless coding process employs a simple predictive coding model called differential pulse code modulation (DPCM) https://store.theartofservice.com/the-predictive-coding-toolkit.html Harmonic Vector Excitation Coding - Linear Predictive Coding 1 HVXC uses Linear predictive coding /


Phase 1 FPIX module assembly status Phase 1 Pixel Upgrade Workshop - Aug2012 Pixel Modules Parallel Session1 Kirk Arndt Purdue University for CMS FPIX.

gantry controls identical. Completed LabVIEW program at Purdue with all functionality required for pixel module assembly as baseline code for commissioning Nebraska system (see video at http://www.youtube.com/watch?v=qMs_w89dnXc)http://www.youtube.com/watch?v=qMs_w89dnXc/more current and so larger amplitude. The frequency detected is ~14 KHz and obviously the wire oscillates also when pulsed at 7Khz and 3.5KHz, but the amplitude goes down click here for the movie Remarks The expected current variation/


Data Communication, Lecture 111 Channel Coding. Data Communication, Lecture 112 audio video (analogue) data (digital) Source anti-alias filter A/D Nyquist.

Data Communication, Lecture 111 Channel Coding Data Communication, Lecture 112 audio video (analogue) data (digital) Source anti-alias filter A/D Nyquist sampling 6dB / bit Channel Code FEC ARQ parity block convolution pulse shaping filter ISI ASK FSK PSK binary M’ary bits/symbol Modulation channel filter Communications Channel loss interference noise distortion channel filter Baseband Passband Transmit Receive Basic Digital Communications System Demodulation envelope coherent/


Stephanie Allison Integration with the SLC Control April 7, 2005 Introduction PNET Receiver VME Module SLC-Aware IOC Existing.

psec jitter pulse to pulse PNET module gets beam code data from Master Pattern Generator Beam code data transferred to Event Generator Event generator sends events to receivers including: 360 Hz, 120 Hz, 10 Hz and 1 Hz fiducials last beam pulse OK / Monitoring SLC-style Digital Input/Output SLC-style Error Logging (use CMLOG instead) SLC-style Klystron Interface SLC-style Video Interface SLC-style Timing Interface (except PNET diagnostics) Direct Hardware Access (and no support for “virtual CAMAC” commands/


1 Video Fundamentals Signal Processing for Digital TV Original Presentation Materials Developed by: Dr. Nikhil Balram, CTO and Dr. Gwyn Edwards, TME National.

Modulation/Vestigial Sideband) modulated onto the video carrier The sound signal is FM modulated onto the Audio Sub-Carrier located 4.5 MHz from the video carrier 04.5 MHz Video Signal Audio Signal Video/ color sub-carrier – is added between the horizontal sync pulses and the start of the active video (the “backporch”) © 2004 National Semiconductor Corporation 33 Notch/8-VSB (Vestigial Side Band) with Trellis coding effective payload of ~19.3 Mb/s (18.9 Mb/s used for video) –Cable: Uses QAM instead of VSB /


1 Audio/Video Compression 4 zLecture 3: Multimedia Networks zLecture 4: Audio/Video Compression zImage & Video Compression Standards zSpeech & Audio Compression.

image features invariant under scaling zRedundancy in stereo: Correlations between stereo images/audio channels 5 Introduction to Audio/Video Compression 4 zSpatial/spectral redundancies: Transform Coding zTemporal redundancy: DPCM (differential pulse code modulation), motion estimation/motion compensation zFirst compression methods: lossless yHuffman coding yZiv-Lempel coding yArithmetic coding zInadequate for transmission media of low bandwidth (e.g., ISDN) or for devices of low data throughput (e/


Chapter 4 Digital Transmission. 4.#2 4-1 DIGITAL-TO-DIGITAL CONVERSION line coding, block coding, and scrambling. Line coding is always needed; block.

tendency today is to change an analog signal to digital data. In this section we describe two techniques, pulse code modulation and delta modulation. Figure 4.21 Components of PCM encoder According to the Nyquist theorem, the sampling rate must be at/ 5.12 Concept of a constellation diagram Figure 5.13 Three constellation diagrams QAM – Quadrature Amplitude Modulation Modulation technique used in the cable/video networking world Instead of a single signal change representing only 1 bps – multiple bits can be/


Video Watermarking Real-time Labeling of MPEG-2 Compressed Video G. C. Langelaar, R. L. Lagendijk, and J. Biemond ITS, ICTG, Delft University of Technology.

,0,1,1,...,1,0,0,0,-1, 0,0,0,0,0,0,0,0,0,0 RLE(x0,x1,x2,…) = (zeros,nozero)... 9 DPCM Difference Pulse Coded Modulation –using the previous DC to predict the next DC value DC=138DC=140 DC=136DC=138 DPCM 138 => 2 => -4 => 2 X DPCM = X i/ value represented by its LSB to L i 29 The Label Bit-rate The maximum number of label bits that can be added to the video stream per second –Determined by the number of lc-VLC codewords –Not known in advance –Experimental evaluation is required first 30 Evaluating the Label Bit/


1 Global Positioning System (GPS) An Overview (Module 1) Location: Determining a basic position. Navigation: Getting from one location to another. Tracking:

satellite signal will not be received. See this video clip: http://www.gps.tv/mpage/roadmate/01m.html 30 Receiver Classes Code based –Positions are determined from range estimates / pseudo random code and then move on to measurements based on the carrier frequency for that code. This carrier frequency is much higher so its pulses are much/code number. 44 The Precise (P) and L1 CA Codes The precise (P) code modulates both L 1 and L 2 carrier phases. The P code is very long (7 day) 10.23 MHz PRN code. This code/


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