Automatic sweep circuit

Title: Automatic sweep circuit

Full Record
Other Related Research

Abstract

An automatically sweeping circuit for searching for an evoked response in an output signal in time with respect to a trigger input. Digital counters are used to activate a detector at precise intervals, and monitoring is repeated for statistical accuracy. If the response is not found then a different time window is examined until the signal is found.

Inventors:

Keefe, Donald J ^[1]

Lemont, IL

Publication Date:: 1980-01-01

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

OSTI Identifier:: 863730

Patent Number(s):: US 4236067

Assignee:: United States of America as represented by United States (Washington, DC)

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: automatic; sweep; circuit; automatically; sweeping; searching; evoked; response; output; signal; time; respect; trigger; input; digital; counters; activate; detector; precise; intervals; monitoring; repeated; statistical; accuracy; found; window; examined; output signal; evoked response; precise intervals; digital counters; /377/

Citation Formats


                    Keefe, Donald J. Automatic sweep circuit.  United States: N. p., 1980. 
        Web.

Copy to clipboard


                    Keefe, Donald J. Automatic sweep circuit.  United States.

Copy to clipboard


                    Keefe, Donald J. Tue .  
        "Automatic sweep circuit".  United States.  https://www.osti.gov/servlets/purl/863730.

Copy to clipboard


                    
@article{osti_863730,

  title        = {Automatic sweep circuit},

  author       = {Keefe, Donald J},

  abstractNote = {An automatically sweeping circuit for searching for an evoked response in an output signal in time with respect to a trigger input. Digital counters are used to activate a detector at precise intervals, and monitoring is repeated for statistical accuracy. If the response is not found then a different time window is examined until the signal is found.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/863730},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1980},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Automatic sweep circuit

Patent Keefe, D J

An automatically sweeping circuit for searching for an evoked response in an output signal in time with respect to a trigger input. Digital counters are used to activate a detector at precise intervals, and monitoring is repeated for statistical accuracy. If the response is not found then a different time window is examined until the signal is found.
Automatic sweep circuit

Patent Keefe, D J

An automatically sweeping circuit for searching for an evoked response in an output signal in time with respect to a trigger input is described. Digital counters are used to activate a detector at precise intervals, and monitoring is repeated for statistical accuracy. If the response is not found then a different time window is examined until the signal is found.
Method and apparatus for automatic shift of ignition timing. [timing circuit for reduced exhaust emissions]

Patent Haubner, G ; Wesemeyer, J ; Meier, W

A transducer provides a signal in the form of a pulse of steady current on which an alternating current is superimposed over a period corresponding to the range of ignition timing shift. Beginning at the same time, a timing circuit determines the width of a gate in which pulses from a pulse generator will be transmitted. The gate width and the pulse generator frequency are controlled by operating conditions of the engine, such as temperature and intake vacuum. The alternations of the transducer output signal are counted in a first counter and the pulses passed through the gate are countedmore »« less
Automatically sweeping dual-channel boxcar integrator

Journal Article Keefe, D J ; Patterson, D R - Rev. Sci. Instrum.; (United States)

An automatically sweeping dual-channel boxcar integrator has been developed to automate the search for a signal that repeatedly follows a trigger pulse by a constant or slowly varying time delay when that signal is completely hidden in random electrical noise and dc-offset drifts. The automatically sweeping dual-channel boxcar integrator improves the signal-to-noise ratio and eliminates dc-drift errors in the same way that a conventional dual-channel boxcar integrator does, but, in addition, automatically locates the hidden signal. When the signal is found, its time delay is displayed with 100-ns resolution, and its peak value is automatically measured and displayed. This relievesmore »« less
https://doi.org/10.1063/1.1135276
Design of a digital logarithmic ratemeter circuit

Journal Article Osborne, R V - IEEE Trans. Nucl. Sci., v. NS-22, no. 3, pp. 1952-1957

The state of a binary counter that has accumulated pulses is digitally converted to a logarithmic representation to base 2. The characteristic is determined by a shift register which locates the leading bit. A 3-bit mantissa over a factor of 2 is generated by a logic look-up table from the second to the fifth most significant bits. The root mean square error in the mantissa is 2.7 percent and the maximum error is 6.6 percent. The output signal is derived from a digital-to-analog converter. In a particular application where the analog output is displayed on a 5-decade scale for countingmore »« less
https://doi.org/10.1109/TNS.1975.4328036

Similar Records