Measuring system

Claim 5

The method as recited in claim 2 wherein said measuring raster for superposition on said cathode-ray tube is generated by: coupling a vertical synchronization signal, which is characterized by a waveform having a leading edge which goes from a first level to a second level and a trailing edge which goes back from said second level to said first level, to a first variable pulse width one-shot multi-vibrator which is activated by the trailing edge of a signal applied to an input thereof, the duration of the pulse produced by said first multivibrator being variable so as to determine the topmost boundary of the raster; coupling an output from said first variable pulse width one-shot multivibrator to a second pulse width one-shot multivibrator which is adapted to be activated by the trailing edge of a signal applied to an input thereof, said second one-shot multivibrator being variable so as to determine the bottom boundary of the raster; coupling an output from said second variable pulse width one-shot multivibrator to one input of an AND gate having a second input coupled to receive a horizontal synchronization signal so that the output of the AND gate provides synchronized pulses indicative of the horizontal lines of the raster to be produced, which pulses occur, in synchronized fashion, at the beginning of each desired line of raster to be generated; coupling an output from said AND gate to a third variable pulse with one-shot multivibrator which is activated by the trailing edge of a signal applied to an input thereof, the third multivibrator having a pulse duration which is variable so as to determine the left-hand margin of the raster; coupling an output from said third multivibrator to an input of a fourth variable pulse width one-shot multivibrator whicH is activated by the trailing edge of a signal applied to an input thereof, the fourth multivibrator being variable so as to determine the right-hand margin of the raster; and combining an output from said fourth multivibrator with the composite video signal and coupling the combination thereof to the cathode-ray tube.

Claim 8

Apparatus for dimensional measurement of a pattern, comprising: means for televising said pattern to produce a video signal thereof, and displaying said pattern on a television monitor; means for generating a variable signal representing a measuring raster, and superimposing said raster on said pattern of said monitor; means for adjusting the variable signal so that said raster overlaps at least one dimension of the pattern to be measured; means for producing a series of uniformly timed pulses in response to the coincidence of (a) the video signal of said pattern exceeding a fixed threshold value and (b) the variable signal representing the raster exceeding a nominal value, said uniformly timed pulses occurring at a frequency substantially greater than the frequency of the horizontal sweep; and means for counting the number of pulses produced during an integral number of frames, said integral number being greater than one, to indicate the dimensional measurement of the pattern.

Claim 9

Apparatus for dimensional measurement of a pattern, comprising: means for televising said pattern to produce a video signal thereof, and displaying said pattern on a television monitor; means for generating a variable signal representing a measuring raster, and superimposing said raster on said pattern of said monitor; means for adjusting the variable signal so that said raster overlaps at least one dimension of the pattern to be measured; means for producing a series of uniformly timed pulses in response to the coincidence of (a) the video signal of said pattern exceeding a fixed threshold value and (b) the variable signal representing the raster exceeding a nominal value, said uniformly timed pulses occurring at a frequency substantially greater than the frequency of the horizontal sweep; and means for counting the number of pulses produced during an integral number of frames, said integral number being greater than one, to indicate the dimensional measurement of the pattern.

Claim 10

Apparatus for dimensional measurement, comprising: a television camera for generating a video signal of an object to be viewed together with appropriate horizontal and vertical synchronizing signals; a cathode-ray tube having horizontal and vertical deflection means associated therewith, and having a video electrode; means, synchronized with said horizontal and vertical signals, for generating a measuring raster signal to provide a raster controlled as to top, bottom, left, and right margins with two or more horizontal lines between the top and bottom margins; means for coupling the signal from said raster generating means together with the video signal generated by said television camera through the video electrode of said cathode-ray tube; an AND gate having a first input terminal, a second input terminal, and an output terminal; means for coupling the horizontal and vertical synchronizing signals from said television camera to the horizontal and vertical deflection means associated with said cathode-ray tube; means for coupling the signal from said raster generating means together with the video signal from said television camera to input terminals of said AND gate; means, coupled to said output terminal, for generating a plurality of pulses when a signal is present on said output terminal, said pulses occurring at a frequency substantially greater than the frequency of the horizontal synchronizing signals; and means for counting the number of pulses to indicate a dimension of the object.

Claim 11

Apparatus for dimensional measurement, comprising: a television camera for generating a video signal of an object to be viewed together with appropriate horizontal and vertical synchronizing signals; a cathode-ray tube having horizontal and vertical deflection means associated therewith, and having a video electrode; means, synchronized with said horizontal and vertical signals, for generating a measuring raster signal to provide a raster controlled as to top, bottom, left, and right margins with two or more horizontal lines between the top and bottom margins; means for coupling the signal from said raster generating means together with the video signal generated by said television camera through the video electrode of said cathode-ray tube; an AND gate having a first input terminal, a second input terminal, and an output terminal; means for coupling the horizontal and vertical synchronizing signals from said television camera to the horizontal and vertical deflection means associated with said cathode-ray tube; means for coupling the signal from said raster generating means together with the video signal from said television camera to input terminals of said AND gate; means, coupled to said output terminal, for generating a plurality of pulses when a signal is present on said output terminal, said pulses occurring at a frequency substantially greater than the frequency of the horizontal synchronizing signals; and means for counting the number of pulses to indicate a dimension of the object.

Claim 12

The apparatus as recited in claim 6 wherein said counting means comprises: a digital pulse counter; and means for resetting the digital pulse counter after a predetermined integral number, greater than one, of vertical synchronization signals from said television camera.