Recording and reproducing color picture information

Claim 3

A method according to claim 1, in which said record medium is monochrome photographic film, and said successive portions of the record medium are constituted by successive frames of said film.

Claim 4

A method according to claim 1, in which said one of the chrominance and index signals which is obtained by said subtracting is subjected to phase reversing and then combined, in alternate fields, with said one signal as obtained by said subtracting for producing said one signal with its phase unchanged in successive fields.

Claim 5

A method according to claim 3, in which said information recorded in the record medium portion for every other color picture field further represents a discriminating signal so that the reproduced composite signal corresponding to said every other color picture field further contains said discriminating signal, and further comprising separating said discriminating signal, if any, from said second reproduced composite signal, and controlling the combining, in alternate fields, of said phase reversed one signal with said one signal as obtained from said subtracting by means of said discriminating signal separated from said second composite signal.

Claim 6

A method according to claim 4, further comprising separating said discriminating signal, if any, from said first reproduced composite signal, combining the discriminating signals separated from said first and second reproduced composite signals to provide a control signal for each field, producing a vertical synchronizing signal from the combined discriminating signals, and adding said vertical synchronizing signal to said luminance signal separated from said one composite signal.

Claim 7

Apparatus for recording and reproducing successive color picture fields each having luminance content and chrominance content, comprising means for exposing successive portions of an elongated strip of radiant energy-sensitive record medium to radiant energy, means for modulating said radiant eNergy so as to record, in each of said record medium portions, information representing a composite signal which contains luminance and chrominance signals corresponding to the luminance and chrominance contents of a respective color picture field and also an index signal having the same frequency as the carrier of said chrominance signal and with the phase of only one of said chrominance and index signals being reversed for successive color picture fields, means for detecting the information recorded in the successive record medium portions and for simultaneously reproducing first and second composite signals corresponding to two successive color picture fields, means for separating said chrominance and index signals from each of said first and second reproduced composite signals, means for separating said luminance signal from one of said reproduced composite signals, adding and subtracting means for adding and for subtracting said chrominance and index signals separated from said first and second reproduced composite signals, respectively, to obtain said chrominance signal and said index signal separate from each other, means for shifting the phase of the separated index signal, and means for demodulating the separated chrominance signal with the phase shifted index signal so as to obtain color difference signals which, with the separated luminance signal, define a respective color picture field.

Claim 8

Apparatus for recording and reproducing successive color picture fields each having luminance content and chrominance content, comprising means for exposing successive portions of an elongated strip of radiant energy-sensitive record medium to radiant energy, means for modulating said radiant eNergy so as to record, in each of said record medium portions, information representing a composite signal which contains luminance and chrominance signals corresponding to the luminance and chrominance contents of a respective color picture field and also an index signal having the same frequency as the carrier of said chrominance signal and with the phase of only one of said chrominance and index signals being reversed for successive color picture fields, means for detecting the information recorded in the successive record medium portions and for simultaneously reproducing first and second composite signals corresponding to two successive color picture fields, means for separating said chrominance and index signals from each of said first and second reproduced composite signals, means for separating said luminance signal from one of said reproduced composite signals, adding and subtracting means for adding and for subtracting said chrominance and index signals separated from said first and second reproduced composite signals, respectively, to obtain said chrominance signal and said index signal separate from each other, means for shifting the phase of the separated index signal, and means for demodulating the separated chrominance signal with the phase shifted index signal so as to obtain color difference signals which, with the separated luminance signal, define a respective color picture field.

Claim 9

Apparatus according to claim 6, in which means are provided for producing said composite signal to be recorded and are in the form of a color television camera including a scanning surface adapted to convert light projected thereon into an electrical output, means including a color filter disposed between an object in the field of view of the camera and said scanning surface for forming a color separated image of the object on said scanning surface, and means for projecting light of alternately complementary colors through said filter onto said scanning surface to form on said scanning surface an index image in overlapping relation with said color separated image, said complementary colors of light projected through the filter being alternated in successive fields, so that said electrical output of the camera constitutes said composite signal containing a luminance signal and a chrominance signal corresponding to said color separated image and an index signal corresponding to said index image.

Claim 10

Apparatus according to claim 7, in which said filter includes a main portion composed of filter elements respectively transmitting light of primary colors to form said color separated image of the object, and a peripheral portion of said filter is composed of alternating elements which are respectively black and capable of transmitting one of the complementary colors of light projected through said filter for providing a discriminating signal in said electrical output for every other field.

Claim 11

Apparatus according to claim 6, in which said means for exposing successive portions of the record medium to radiant energy and for modulating the radiant energy include drive means for intermittently moving said record medium in the longitudinal direction so as to dispose the successive portions thereof at a recording station, means including a color filter for projecting a color separated image of an object in the field of view of the apparatus directly onto the record medium portion disposed at said record station while said record medium is at rest, means for projecting light of alternately complementary colors through said filter onto said record medium portion at rest at said recording station to form an index image on said record medium portion in overlapping relation with said color separated image, and control means synchronized with said drive means for alternating said complementary colors of light projected through said filter in correspondence with the disposition of successive portions of said record medium at said recording station.

Claim 12

Apparatus according to claim 9, In which said filter includes a main portion composed of filter elements respectively transmitting light of primary colors to form said color separated image of the object, and a peripheral portion of said filter is composed of alternating elements which are respectively black and capable of transmitting one of the complementary colors of light projected through said filter for providing a discriminating signal image adjacent the medium portion corresponding to every other field.

Claim 13

Apparatus according to claim 6, in which means are provided for producing said chrominance and index signals and includes input means for respectively receiving two color difference signals and a horizontal synchronizing signal, two modulating means respectively receiving said two color difference signals from the respective input means, frequency multiplier means receiving said horizontal synchronizing signal and producing therefrom a carrier and index signal at said predetermined carrier frequency which is supplied directly to one of said modulating means for modulation by the respective one of said color difference signals, phase shifting means receiving said carrier signal and providing a phase-shifted carrier signal supplied to the other of said modulating means for modulation by the other of said color difference signals and means for adding together the outputs of said two modulating means to provide said chrominance signal, and means are further provided for adding said chrominance signal to said index signal and to the luminance signal for constituting said composite signal.

Claim 14

Apparatus according to claim 11, in which means are provided for reversing the phase of said one signal in successive fields and includes phase inverting means receiving the added together outputs of said two modulating means for providing a phase-inverted chrominance signal, and combining means alternated in successive fields for alternately combining said chrominance signal represented by said added together outputs of the modulating means and said phase-inverted chrominance signal.

Claim 15

Apparatus according to claim 11, in which means are provided for reversing the phase of said one signal in successive fields and includes phase inverting means receiving the output of said frequency multiplier means for providing a phase-inverted index signal, and combining means alternated in successive fields for alternately combining the index signal represented by the output of said frequency multiplier means and said phase-inverted index signal.

Claim 16

Apparatus according to claim 6, in which means are provided for producing said composite signal to be recorded and are in the form of a color television camera including a photoconductive surface for the electrical conversion of images projected thereon into an electrical output, color filter means disposed between said surface and an object in the field of view of the camera for forming a color-separated image of said object on said surface, first and second indexing electrodes disposed in close proximity to said surface, and circuit means for applying different potentials alternated in successive periods of said electrical output to said indexing electrodes so as to electrically form an index image on said surface, whereby said electrical output forms a composite signal containing chrominance and luminance signals corresponding to said color separated image and an index signal corresponding to said index image, with the phase of said index signal being reversed in said successive periods.

Claim 17

Apparatus according to claim 14, in which said different potentials are alternated in successive field periods and said electrical output is applied directly, as said composite signal, to said means for modulating the radiant energy.

Claim 18

Apparatus according to claim 14, in which said different potentials are alternated in successive line scanning periods of said electrical output, and further comprising means for separating said luminance signal and said chrominaNce and index signals from said electrical output, delay means receiving said separated chrominance and index signals and delaying the latter by one line scanning period, adding means for adding said separated chrominance and index signals and the output of said delay means to provide, as its output, said chrominance signal alone, means for converting said output of the adding means into said chrominance signal reversing phase in successive field periods, subtracting means for subtracting said separated chrominance and index signals and said output of the delay means to provide, as its output, said index signal reversing phase in successive line scanning periods, means for converting said output of the subtracting means into said index signal with constant phase in successive field periods, and means for combining said separated luminance signal, said chrominance signal reversing phase in successive field periods and said index signal with constant phase to constitute said composite signal for modulation of said radiant energy.

Claim 19

Apparatus according to claim 6, further comprising phase reversing means for reversing the phase of the output of said subtracting means, and combining means for combining, in alternate fields, the output of said phase reversing means and the output of said subtracting means for obtaining said one of the chrominance and index signals with the phase thereof unchanged in successive fields.

Claim 20

Apparatus according to claim 17, in which said composite signals recorded in the record medium portions corresponding to every other field of color picture information further each contain a discriminating signal, and further comprising means for separating said discriminating signal, if any, from said second reproduced composite signal, and means responsive to said discriminating signal separated from said second reproduced composite signal for controlling said combining means.

Claim 21

Apparatus according to claim 18, further comprising means for separating said discriminating signal, if any, from said first reproduced composite signal, means for producing a vertical synchronizing signal in response to the discriminating signals separated from said first and second reproduced composite signals, and means for adding said vertical synchronizing signal to said luminance signal separated from said one composite signal.

Claim 22

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising means for producing a quadrature phase modulated chrominance signal having a predetermined carrier frequency, an index signal having the same frequency as said carrier frequency, and a luminance signal, means for reversing the phase of one of said chrominance and index signals in successive fields, means for combining said one signal having phase reversal in successive fields with the other of said chrominance and index signals and with said luminance signal to provide a composite signal, means for scanning the record medium with a radiant energy beam at a predetermined rate so that each of said record medium portions is scanned in a respective field period of the color picture information to be recorded, and means for modulating the intensity of said beam with said composite signal.

Claim 23

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising means for producing a quadrature phase modulated chrominance signal having a predetermined carrier frequency, an index signal having the same frequency as said carrier frequency, and a luminance signal, means for reversing the phase of one of said chrominance and index signals in successive fields, means for combining said one signal having phase reversal in successive fields with the other of said chrominance and index signals and with said luminance signal to provide a composite signal, means for scanning the record medium with a radiant energy beam at a predetermined rate so that each of said record medium portions is scanned in a respective field period of the color picture information to be recorded, and means for modulating the intensity of said beam with said composite signal.

Claim 24

Apparatus according to claim 20, further comprising means for producing a discriminating signal having a frequency substantially lower than the frequency band of said chrominance signal, and means for combining said discriminating signal with said chrominance, index and luminance signals only for every other field of color picture information so as to include said discriminating signal in said composite signal for said every other field.

Claim 25

Apparatus according to claim 20, in which said means for producing said chrominance, index and luminance signals includes input means for respectively receiving two color difference signals, a luminance signal and a horizontal synchronizing siGnal, two modulating means respectively receiving said two color difference signals from the respective input means, frequency multiplier means receiving said horizontal synchronizing signal and producing therefrom a carrier and index signal at said predetermined carrier frequency which is supplied directly to one of said modulating means for modulation by the respective one of said color difference signals, phase shifting means receiving said carrier signal and providing a phase-shifted carrier signal supplied to the other of said modulating means for modulation by the other of said color difference signals, and means for adding together the outputs of said two modulating means to provide said chrominance signal.

Claim 26

Apparatus according to claim 22, in which said means for reversing the phase of said one signal in successive fields includes phase inverting means receiving the added together outputs of said two modulating means for providing a phase-inverted chrominance signal, and combining means alternated in successive fields for alternately combining said chrominance signal represented by said added together outputs of the modulating means and said phase-inverted chrominance signal.

Claim 27

Apparatus according to claim 22, in which said means for reversing the phase of said one signal in successive fields includes phase inverting means receiving the output of said frequency multiplier means for providing a phase-inverted index signal, and combining means alternated in successive fields for alternately combining the index signal represented by the output of said frequency multiplier means and said phase-inverted index signal.

Claim 28

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising a color television camera including a scanning surface adapted to convert light projected thereon into an electrical output means including a color filter disposed between an object in the field of view of the camera and said scanning surface for forming a color separated image of the object on said scanning surface, and means for projecting light of alternately complementary colors through said filter onto said scanning surface to form on said scanning surface an index image in overlapping relation with said color separated image, said complementary colors of light projected through the filter being alternated in successive fields, so that said electrical output of the camera constitutes a composite signal containing a luminance signal and a chrominance signal corresponding to said color separated image and an index signal corresponding to said index image, means for scanning the record medium with a radiant energy beam at a predetermined rate so that each of said record medium portions is scanned in a respective field period of said composite signal, and means for modulating the intensity of said beam with said composite signal.

Claim 29

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising a color television camera including a scanning surface adapted to convert light projected thereon into an electrical output means including a color filter disposed between an object in the field of view of the camera and said scanning surface for forming a color separated image of the object on said scanning surface, and means for projecting light of alternately complementary colors through said filter onto said scanning surface to form on said scanning surface an index image in overlapping relation with said color separated image, said complementary colors of light projected through the filter being alternated in successive fields, so that said electrical output of the camera constitutes a composite signal containing a luminance signal and a chrominance signal corresponding to said color separated image and an index signal corresponding to said index image, means for scanning the record medium with a radiant energy beam at a predetermined rate so that each of said record medium portions is scanned in a respective field period of said composite signal, and means for modulating the intensity of said beam with said composite signal.

Claim 30

Apparatus according to claim 25, in which said filter includes a main portion composed of filter elements respectively transmitting light of primary colors to form said color separated image of the object, and a peripheral portion of said filter is composed of alternating elements which are respectively black and capable of transmitting one of the complementary colors of light projected through said filter for providing a discriminating signal in said electrical output for every other field.

Claim 31

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising a color television camera including a photoconductive surface for the electrical conversion of images projected thereon into an electrical output, color filter means disposed between said surface and an object in the field of view of the camera for forming a color-separated image of said object on said surface, first and second indexing electrodes disposed in close proximity to said surfAce, and circuit means for applying different potentials alternated in successive periods of said electrical output to said indexing electrodes so as to electrically form an index image on said surface, whereby said electrical output forms a composite signal containing chrominance and luminance signals corresponding to said color separated image and an index signal corresponding to said index image, with the phase of said index signal being reversed in said successive periods, means for scanning the record medium with a radiant energy beam at a predetermined rate so that each of said record medium portions is scanned in a respective field period of said composite signal, and means for modulating the intensity of said beam with said composite signal.

Claim 32

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising a color television camera including a photoconductive surface for the electrical conversion of images projected thereon into an electrical output, color filter means disposed between said surface and an object in the field of view of the camera for forming a color-separated image of said object on said surface, first and second indexing electrodes disposed in close proximity to said surfAce, and circuit means for applying different potentials alternated in successive periods of said electrical output to said indexing electrodes so as to electrically form an index image on said surface, whereby said electrical output forms a composite signal containing chrominance and luminance signals corresponding to said color separated image and an index signal corresponding to said index image, with the phase of said index signal being reversed in said successive periods, means for scanning the record medium with a radiant energy beam at a predetermined rate so that each of said record medium portions is scanned in a respective field period of said composite signal, and means for modulating the intensity of said beam with said composite signal.

Claim 33

Apparatus according to claim 27, in which said different potentials are alternated in successive field periods and said electrical output is applied directly, as said composite signal, to said means for modulating the beam.

Claim 34

Apparatus according to claim 27, in which said different potentials are alternated in successive line scanning periods of said electrical output, and further comprising means for separating said luminance signal and said chrominance and index signals from said electrical output, delay means receiving said separated chrominance and index signals and delaying the latter by one line scanning period, adding means for adding said separated chrominance and index signals and the output of said delay means to provide, as its output, said chrominance signal alone, means for converting said output of the adding means into said chrominance signal reversing phase in successive field periods, subtracting means for subtracting said separated chrominance and index signals and said output of the delay means to provide, as its output, said index signal reversing phase in successive line scanning periods, means for converting said output of the subtracting means into said index signal with constant phase in successive field periods, and means for combining said separated luminance signal, said chrominance signal reversing phase in successive field periods and said index signal with constant phase to constitute said composite signal for modulation of said beam.

Claim 35

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising drive means for intermittently moving said record medium in the longitudinal direction so as to dispose the successive portions thereof at a recording station, means including a color filter for projecting a color separated image of an object in the field of view of the apparatus directly onto the record medium portion disposed at said record station while said record medium is at rest, means for projecting light of alternately complementary colors through said filter onto said record medium portion at rest at said recording station to form an index image on said record medium portion in overlapping relation with said color separated image, and control means synchronized with said drive means for alternating said complementary colors of light projected through said filter in correspondence with the disposition of successive portions of said record medium at said recording station.

Claim 36

Apparatus for recording successive fields of color picture information in successive portions of an elongated strip of radiant energy-sensitive record medium, comprising drive means for intermittently moving said record medium in the longitudinal direction so as to dispose the successive portions thereof at a recording station, means including a color filter for projecting a color separated image of an object in the field of view of the apparatus directly onto the record medium portion disposed at said record station while said record medium is at rest, means for projecting light of alternately complementary colors through said filter onto said record medium portion at rest at said recording station to form an index image on said record medium portion in overlapping relation with said color separated image, and control means synchronized with said drive means for alternating said complementary colors of light projected through said filter in correspondence with the disposition of successive portions of said record medium at said recording station.

Claim 37

Apparatus according to claim 30, in which said filter includes a main portion composed of filter elements respectively transmitting light of primary colors to form said color separated image of the object, and a peripheral portion of said filter is composed of alternating elements which are respectively black and capable of transmitting one of said complimentary colors of light projected through the filter for providing a discriminating image projected onto said record medium adjacent every other one of said record medium portions.

Claim 40

Apparatus according to claim 32, further comprising phase reversing means for reversing the phase of the output of said subtracting means, and combining means for combining, in alternate fields, the output of said phase reversing means and the output of said subtracting means for obtaining said one of the chrominance and index signals with the phase thereof unchanged in successive fields.

Claim 41

Apparatus according to claim 33, in which said composite signals recorded in the record medium frame portions corresponding to every other field of color picture information further each contain a discriminating signal, and further comprising means for separating said discriminating signal, if any, from said second reproduced composite signal, and means responsive to said discriminating signal separated from said second reproduced composite signal for controlling said combining means.

Claim 42

Apparatus according to claim 34, further comprising means for separating said discriminating signal, if any, from said first reproduced composite signal, means for producing a vertical synchronizing signal in response to the discriminating signals separated from said first and second reproduced composite signals, and means for adding said vertical synchronizing signal to said luminance signal separated from said one composite signal.

Claim 43

An elongated strip of radiant energy-sensitive record medium having successive frame portions each recorded with a composite signal representing a respective field of color picture information and containing a quadrature phase modulated chrominance signal having a predetermined carrier frequency, an index signal of the same frequency as said carrier frequency and a luminance signal, and in which the phase of one of said chrominance and index signals contained in the composite signal recorded in successive frames is reversed.

Claim 44

An elongated strip of radiant energy-sensitive record medium having successive frame portions each recorded with a composite signal representing a respective field of color picture information and containing a quadrature phase modulated chrominance signal having a predetermined carrier frequency, an index signal of the same frequency as said carrier frequency and a luminance signal, and in which the phase of one of said chrominance and index signals contained in the composite signal recorded in successive frames is reversed.

Claim 45

An elongated strip of radiant energy-sensitive record medium according to claim 36, in which there is further recorded, adjacent each of said frame portions corresponding to every other field of color picture, a discriminating signal having a frequency substantially below the frequency band of said chrominance signal.