Spectrum-analyzing system

Claim 2

A spectrum-analyzing system comprising: a circuit for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of reCurrent intervals having durations longer than the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signalderiving apparatus coupled to said storage devices; means for causing said deriving apparatus to be sequentially responsive to said stored effects at times corresponding to said interludes for deriving during each interlude from the effects stored in one of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signalselecting means coupled to said deriving device and including a network having a pass band narrow relative to the frequency range of each of said groups of derived signals for sequentially developing signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 3

A spectrum-analyzing system comprising: a circuit having a pass band W cycles in width for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said in width and individually representative of different frequency bands of said groups of derived signals, thereby effectively to select the signals in c frequency bands of said supplied signals.

Claim 4

A spectrum-analyzing system comprising: a circuit having a pass band W cycles in width for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said in width and individually representative of different frequency bands of said groups of derived signals, thereby effectively to select the signals in c frequency bands of said supplied signals.

Claim 5

A spectrum-analyzing system comprising: a circuit for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations twice as long as the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and pairs thereof partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving apparatus to be sequentially responsive to said stored effects at times corresponding to said interludes for deriving during each interlude from the effects stored in one of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including a network having a pass band narrow relative to the frequency range of each of said groups of derived signals for sequentially developing signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 6

A spectrum-analyzing system comprising: a circuit for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations twice as long as the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and pairs thereof partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving apparatus to be sequentially responsive to said stored effects at times corresponding to said interludes for deriving during each interlude from the effects stored in one of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including a network having a pass band narrow relative to the frequency range of each of said groups of derived signals for sequentially developing signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 7

A spectrum-analyzing system comprising: a circuit having a pass band W cycles in width for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving apparatus to be sequentially responsive to said stored effects at times corresponding to said interludes for deriving during each interlude from the effects stored in oNe of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including a network having a pass band substantially W cycles in width and narrow relative to the frequency range of each of said groups of derived signals for sequentially developing signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 8

A spectrum-analyzing system comprising: a circuit having a pass band W cycles in width for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving apparatus to be sequentially responsive to said stored effects at times corresponding to said interludes for deriving during each interlude from the effects stored in oNe of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including a network having a pass band substantially W cycles in width and narrow relative to the frequency range of each of said groups of derived signals for sequentially developing signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 9

A spectrum-analyzing system comprising: a circuit for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving apparatus to be sequentially responsive to said stored effects at times corresponding to said interludes for deriving during each interlude from the effects stored in one of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including an oscillator for developing a signal which varies in frequency between predetermined limits, a modulator responsive to said developed and derived signals for developing a beat-frequency signal and a network having a pass band narrow relative to the frequency range of each of said groups of derived signals and responsive to said beat-frequency signal for sequentially translating signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 10

A spectrum-analyzing system comprising: a circuit for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving apparatus to be sequentially responsive to said stored effects at times corresponding to said interludes for deriving during each interlude from the effects stored in one of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including an oscillator for developing a signal which varies in frequency between predetermined limits, a modulator responsive to said developed and derived signals for developing a beat-frequency signal and a network having a pass band narrow relative to the frequency range of each of said groups of derived signals and responsive to said beat-frequency signal for sequentially translating signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 11

A spectrum-analyzing system comprising: a circuit having a pass band W cycles in width for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving during each interlude from the effects stored in one of said intervals and at a rate c higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval and having a frequency range cW cycles, where c is a constant greater than one; and signal-selecting means coupled to said deriving device and including an oscillator for developing a signal which varies in frequency over said range cW cycles, a modulator responsive to said developed and derived signals for developing a beat-frequency signal and a network having a pass band W cycles in width and narrow relative to the frequency range of each of said groups of derived signals and responsive to said beat-frequency signal for sequentially translating signals each W cycles in width and individually representative of different freqUency bands of said groups of derived signals, thereby effectively to select the signals in c frequency bands of said supplied signals.

Claim 12

A spectrum-analyzing system comprising: a circuit having a pass band W cycles in width for supplying the signals in a predetermined frequency spectrum; a plurality of signal-storage devices; means for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said storage devices; means for causing said deriving during each interlude from the effects stored in one of said intervals and at a rate c higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval and having a frequency range cW cycles, where c is a constant greater than one; and signal-selecting means coupled to said deriving device and including an oscillator for developing a signal which varies in frequency over said range cW cycles, a modulator responsive to said developed and derived signals for developing a beat-frequency signal and a network having a pass band W cycles in width and narrow relative to the frequency range of each of said groups of derived signals and responsive to said beat-frequency signal for sequentially translating signals each W cycles in width and individually representative of different freqUency bands of said groups of derived signals, thereby effectively to select the signals in c frequency bands of said supplied signals.

Claim 13

A spectrum-analyzing system comprising: a circuit for supplying the signals in a predetermined frequency spectrum; a plurality of cathode-ray tube signal-storage devices each having a pair of electron guns and an anode; biasing means coupled to one of said electron guns in each of said tubes for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects on said anodes representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said the other one of said electron guns in each of said tubes; means for controlling the coupling of said deriving apparatus to said other guns so that said apparatus is sequentially responsive to said stored effects on said anodes at times corresponding to said interludes for deriving during each interlude from the effects stored in one of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including a network having a pass band narrow relative to the frequency range of each of said groups of derived signals for sequentially developing signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.

Claim 14

A spectrum-analyzing system comprising: a circuit for supplying the signals in a predetermined frequency spectrum; a plurality of cathode-ray tube signal-storage devices each having a pair of electron guns and an anode; biasing means coupled to one of said electron guns in each of said tubes for causing said devices individually to be responsive to said supplied signals during different groups of recurrent intervals having durations longer than the interludes therebetween for individually storing effects on said anodes representative of those of said supplied signals occurring during different ones of said groups of intervals, said groups of intervals being staggered in time and partially overlapping to diminish aperture distortion in the storing of said effects; a signal-deriving apparatus coupled to said the other one of said electron guns in each of said tubes; means for controlling the coupling of said deriving apparatus to said other guns so that said apparatus is sequentially responsive to said stored effects on said anodes at times corresponding to said interludes for deriving during each interlude from the effects stored in one of said intervals and at a rate higher than the storing rate thereof a plurality of groups of signals, each derived group being representative of those of said supplied signals occurring during said one interval; and signal-selecting means coupled to said deriving device and including a network having a pass band narrow relative to the frequency range of each of said groups of derived signals for sequentially developing signals each having the frequency limits of said network and individually representative of different frequency bands of said groups of derived signals.