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US 3,945,035 AGranted
Method and means for filtering and amplifying signal components of desired frequency
OwnerDouglas Goldmaninventor
Life of this patent
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OwnerDouglas Goldmaninventor
Estimating the term…
A method and means for filtering and intensifying signal components of a desired predetermined period of repetition wherein a plurality of recording heads in tandem arrangement are provided, adjacent recording heads being equally spaced from each other. A magnetic tape is drawn past the recording heads at a constant velocity. The recurring signal component of desired period of repetition is delivered to the recording heads simultaneously and in such a way that the portion of the magnetic tape upon which each individual recording of the desired signal component is made by each recording head reaches the next recording head simultaneously with the next such signal component. As a result the amplitude of the desired signal component is increased on the magnetic tape and the amplitude of all other periods of repetition is relatively reduced. The summated signal can be reproduced by means of a playback head and an appropriate readout means.
A system for intensifying a desired component of a recurring signal comprising a plurality of signal recording elements arranged in sequence, means to combine the recording of said elements, the recording of each element being simultaneous with respect to the recording of the other recording elements of said sequence and intensifying by summation only said desired component while continuously reflecting changes therein from cycle to cycle.
A magnetic tape recording device for intensifying a desired component of a recurring signal comprising a plurality of magnetic signal recording heads and a magnetizable tape, means to move said tape past said heads, said heads being arranged to superimpose a sequence of recordings of said recurring signal upon said tape as said tape moves past said heads such that said recordings on said tape intensify by summation only said desired component and continuously reflect changes therein from cycle to cycle, there being a constant time delay between successive recordings in sequence.
A system for amplifying a desired component of a recurring signal while continuously reflecting changes therein from cycle to cycle, said system comprising a plurality of magnetic recording heads arranged in tandem, a magnetizable recording medium, means to move said recording medium past said recording heads, means for feeding said recurring signal containing said desired component to all of said recording heads simultaneously and means whereby all of said recording heads record the first occurrence of said signal component and thereafter each of said heads except the first superposes a recording of each subsequent occurrence of said signal component upon the recording of said recording medium of the previous occurrence of said signal component made by the preceding one of said heads, thus continuously producing on said recording medium a recording of said signal component of increasing amplitude.
A method of amplifying a desired component of a recurring signal while continuously reflecting changes therein from cycle to cycle, said method comprising the steps of providing a plurality of magnetic recording heads arranged in tandem, providing a magnetizable recording medium, moving said recording medium past said heads, feeding said recurring signal to all of said heads simultaneously, causing all of said heads to record the first occurrence of said signal component and thereafter causing each of said heads except the first to superpose a recording of each subsequent occurrence of said signal component upon the recording on said recording medium of the previous occurrence of said signal component made by the preceding one of said heads, whereby to continuously produce on said recording medium a recording of said signal component of increasing amplitude.
Dependencies are inferred from the claim text.