FFT-based multichannel video receiver

A multichannel video receiver having an analog-to-digital conveyer, fast-Fourier transform circuit and inverse-Fourier transform circuit. The analog-to-digital converter circuit generates a digitized representation of a frequency band used to convey a plurality of video signals, and the fast-Fourier...

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Bibliographische Detailangaben
1. Verfasser:	YUN WEIJIE,SHENG SAMUEL
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR ACOUSTICS ACYCLIC OR CARBOCYCLIC COMPOUNDS ADVERTISING ANALOGOUS ARRANGEMENTS USING OTHER WAVES ANTENNAS, i.e. RADIO AERIALS APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY BROADCAST COMMUNICATION CALCULATING CHEMISTRY CINEMATOGRAPHY CODE CONVERSION IN GENERAL CODING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY COMPUTING CORRECTION OF TYPOGRAPHICAL ERRORS COUNTING CRYPTOGRAPHY DEAF-AID SETS DECODING DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY ELECTROGRAPHY ELECTRONIC TIME-PIECES ELECTROPHOTOGRAPHY HANDLING RECORD CARRIERS HOLOGRAPHY HOROLOGY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME IMAGE DATA PROCESSING OR GENERATION, IN GENERAL INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER LINING MACHINES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MAGNETOGRAPHY MEASURING METALLURGY MULTIPLEX COMMUNICATION MUSICAL INSTRUMENTS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC CHEMISTRY PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA PRINTING PUBLIC ADDRESS SYSTEMS PULSE TECHNIQUE RADIO DIRECTION-FINDING RADIO NAVIGATION RECOGNITION OF DATA RECORD CARRIERS SEALS SELECTING SELECTIVE PRINTING MECHANISMS SEMICONDUCTOR DEVICES SIGNALLING SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION STAMPS TELEPHONIC COMMUNICATION TESTING TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILARSIGNALS TRANSPORTING TYPEWRITERS WIRELESS COMMUNICATIONS NETWORKS
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Beschreibung
Zusammenfassung:	A multichannel video receiver having an analog-to-digital conveyer, fast-Fourier transform circuit and inverse-Fourier transform circuit. The analog-to-digital converter circuit generates a digitized representation of a frequency band used to convey a plurality of video signals, and the fast-Fourier transform circuit generates a frequency-domain representation of the digitized representation of the frequency band. The inverse-Fourier transform circuit recovers, from the frequency-domain representation, a plurality of digitized time-domain signals that correspond to the plurality of video signals.