Method and apparatus for recording intelligence on a sheet material

Claim 1

A method of recording and retrieving data which comprises: a. directing an illuminating beam and a reference beam from a coherent light source toward a light sensitive medium, b. interposing a light modulator responsive to informational data in one of said beams, c. moving said beams and said medium relative to each other to sweep the beams across the medium in one direction while moving the medium in a direction transverse to the direction of the sweep, d. shifting one of said beams to a different angle relative to the pLane of said medium after each sweep to record during each sweep a one-dimensional holographic record of a different spatial frequency, related to said different angle, to that recorded during any adjacent sweep, e. illuminating the recorded data on said medium progressively with a beam from a coherent light source to produce a discrete output light signal for each spatial frequency sweep on said medium, and f. directing the discrete output signals of said illumination to a light responsive detector to recreate the informational data introduced by the modulator.

Claim 2

A method of recording and retrieving data which comprises: a. directing an illuminating beam and a reference beam from a coherent light source toward a light sensitive medium, b. interposing a light modulator responsive to informational data in one of said beams, c. moving said beams and said medium relative to each other to sweep the beams across the medium in one direction while moving the medium in a direction transverse to the direction of the sweep, d. shifting one of said beams to a different angle relative to the pLane of said medium after each sweep to record during each sweep a one-dimensional holographic record of a different spatial frequency, related to said different angle, to that recorded during any adjacent sweep, e. illuminating the recorded data on said medium progressively with a beam from a coherent light source to produce a discrete output light signal for each spatial frequency sweep on said medium, and f. directing the discrete output signals of said illumination to a light responsive detector to recreate the informational data introduced by the modulator.

Claim 5

A method for readout of recorded data on a continuous strip, said data being recorded as closely adjacent overlapping holographic records each with a different spatial frequency, which comprises illuminating said strip in successive sweeps of a coherent light beam establishing relative movement between the strip and the beam sweep in a direction transverse to the direction of beam sweep, and sequentially varying the angle of said beam for each spatial frequency to produce output beams at discrete angles from said strip, and sequentially detecting the intensity of said output beams to reproduce recorded data.

Claim 6

A method for readout of recorded data on a continuous strip, said data being recorded as closely adjacent overlapping holographic records each with a different spatial frequency, which comprises illuminating said strip in successive sweeps of a coherent light beam establishing relative movement between the strip and the beam sweep in a direction transverse to the direction of beam sweep, and sequentially varying the angle of said beam for each spatial frequency to produce output beams at discrete angles from said strip, and sequentially detecting the intensity of said output beams to reproduce recorded data.

Claim 7

A method of recording data on a light sensitive recording medium which comprises: a. directing an illuminating beam and a reference beam from a coherent light source toward a light sensitive medium, b. interposing a light modulator responsive to informational data in one of said beams, c. moving said beams and said medium relative to each other to cause the beams to sweep across the medium in one direction while the medium moves in another direction, and d. shifting one of said beams to a different angle relative to said medium after the completion of each sweep to record during each sweep a one-dimensional holographic record of a different spatial frequency related to said different angle recorded during any adjacent sweep.

Claim 8

A method of recording data on a light sensitive recording medium which comprises: a. directing an illuminating beam and a reference beam from a coherent light source toward a light sensitive medium, b. interposing a light modulator responsive to informational data in one of said beams, c. moving said beams and said medium relative to each other to cause the beams to sweep across the medium in one direction while the medium moves in another direction, and d. shifting one of said beams to a different angle relative to said medium after the completion of each sweep to record during each sweep a one-dimensional holographic record of a different spatial frequency related to said different angle recorded during any adjacent sweep.

Claim 9

A system for recording data on a light sensitive recording medium which comprises: a. a sheet of light sensitive recording medium, b. means for moving said sheet in one direction, c. a source of coherent light, d. means for directing an illuminating beam and a reference beam from said source to said sheet at respectively different angles to the plane of said sheet, e. means to cause said beams to sweep said sheet in a direction angled to said one direction as said sheet moves in said one direction, f. means interposed in one of said beams to modulate said one of said beams in response to informational data, and g. means to alter the angle of one of said beams relative to said sheet upon completion of a sweep across said sheet to create for successive sweeps closely adjacent one-dimensional holographic records each having a discernibly different spatial frequency to that of an adjacent record.

Claim 10

A system for recording data on a light sensitive recording medium which comprises: a. a sheet of light sensitive recording medium, b. means for moving said sheet in one direction, c. a source of coherent light, d. means for directing an illuminating beam and a reference beam from said source to said sheet at respectively different angles to the plane of said sheet, e. means to cause said beams to sweep said sheet in a direction angled to said one direction as said sheet moves in said one direction, f. means interposed in one of said beams to modulate said one of said beams in response to informational data, and g. means to alter the angle of one of said beams relative to said sheet upon completion of a sweep across said sheet to create for successive sweeps closely adjacent one-dimensional holographic records each having a discernibly different spatial frequency to that of an adjacent record.

Claim 12

A system for readout of recorded data on a continuous strip, said data being recorded as closely adjacent overlapping one-dimensional holographic records each with a different spatial frequency which comprises a light source for producing a coherent light beam, scanning means for intercepting and directing said beam to said strip at varying angles comprising a body having a plurality of discrete reflective surfaces mounted at varying angles to the axis of rotation of said body, means for rotating said body to scan said beam transversely of said strip, means for moving said strip in the path of said beam as reflected by said surfaces wherein each holographic record is sequentially displayed as a light output, and means for recording said light output to recreate the recorded data.

Claim 13

A system for readout of recorded data on a continuous strip, said data being recorded as closely adjacent overlapping one-dimensional holographic records each with a different spatial frequency which comprises a light source for producing a coherent light beam, scanning means for intercepting and directing said beam to said strip at varying angles comprising a body having a plurality of discrete reflective surfaces mounted at varying angles to the axis of rotation of said body, means for rotating said body to scan said beam transversely of said strip, means for moving said strip in the path of said beam as reflected by said surfaces wherein each holographic record is sequentially displayed as a light output, and means for recording said light output to recreate the recorded data.