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Simultaneously acquiring video images and analog signals
| Details |
Inventors: Rector, David M.; Harper, Ronald M.;
Assignee: The Regents of the University of California (Oakland, CA)
Primary Examiner: Kostak; Victor R.
Assistant Examiner:
Attorney, Agent or Firm: Merchant, Gould, Smith, Edell, Welter & Schmidt
A system provides for simultaneous collection, storage and analysis of an analog signal and video signal. Multiplexes of up to 240 low bandwidth analog channels with a camera video signal is effective. The output is a standard composite video signal containing analog and video data. The combined signals can be stored on videotape, or can be digitized by a framegrabber. The circuitry separates horizontal synchronizing pulses from a camera output. The signal is then multiplexed with the video signal, such that a portion of each video horizontal line represents the analog data. The combined output is stored together, providing a means for synchronizing the two signals during analysis. The design allows easy coordination of animate and inanimate events with video images from a standard video camera. The system also provides for interleaving digitized physiological signals and video images of subjects onto digital media in a standard file format. The system can provide for multimedia communications such as teleconferencing, surveillance systems using video and analog signals and also single cell physical and visible behavior according to changing conditions. |
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DETAILED DESCRIPTION We claim: 1.
A system for processing multiple signals comprising: means for receiving a video signal representative of a camera image, the video signal being represented as multiple horizontal lines in a video frame, means for receiving an analog signal, the analog signal being representative of an analog input, means for digitally double buffering the analog signal, the means for buffering including means to effect repetition of the analog signal within a single video image frame, and means for outputting the mixed analog and video signals.
2.
A system as claimed in claim 1 wherein the outputting means is selected from the group comprising at least one of a digitizer, and means for storing the mixed signals on a videotape, means for storing the mixed signals on a computer.
3.
A system as claimed in claim 1 including means for representing the analog signal visually on a band in a visual video frame representation of the video signal.
4.
A system as claimed in claim 3 wherein the band is composed of multiple horizontal signals, the analog signal corresponds to at least part of the horizontal lines of the video signal.
5.
A system as claimed in claim 4 wherein the intensity of the analog signal on a respective horizontal line is representative of the intensity of the analog signal.
6.
A system as claimed in claim 1 wherein a single analog signal is contained on a single horizontal line.
7.
A system as claimed in claim 3 wherein the band is a vertical band containing multiple analog signals on respective horizontal lines of the video frame, and wherein the band is located at a predetermined vertical position on the video frame.
8.
A system as claimed in claim 1 wherein the video signal is represented by at least about 240 horizontal lines and wherein at least about 240 analog signals are inputted and mixed on respective horizontal lines.
9.
A system as claimed in claim 1 wherein the video signal is represented by a predetermined first number of horizontal lines, and including multiple analog signals represented by a second predetermined number of signals, said second predetermined number being equal to the first predetermined number, or a lesser number of predetermined signals
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