Abstract: A method and apparatus for constructing and relaying an optical holographic record containing a plurality of very small holograms, each of which contains color information independent of the other holograms. Each piece of full color information, such as a frame of an ordinary color photographic movie, is recorded as an individual hologram. The record is a narrow, elongated flexible film with the holograms formed in a line along its length, each hologram touching those on either side thereof. One or more light sensitive detectors for converting an image into a time varying electronic signal are positioned to receive holographically reconstructed signals and transform them into a form acceptable to an ordinary color television set for displaying the color information thereon. One, two and three image detecting tube systems are disclosed.

Abstract: A plurality of transducers are rotated or otherwise moved in respect to a record medium so as to be successively operatively positioned relative to the latter in a repeating cyclic order for recording and/or reproducing video signals in successive parallel tracks on the record medium. Interference or cross-talk between signals recorded in adjacent tracks is reduced or eliminated during reproduction by recording the chrominance signal components of the video signals with different first and second carriers in the adjacent tracks, respectively. Pulse signals are produced upon the operative positioning of each of the transducers, and the first and second carriers are selected for recording of the chrominance signal components in the tracks which are next adjacent each other in response to every other one of the pulse signals.

Abstract: Methods and apparatus for the encoding with synchronization information of video signals to be recorded and for subsequently decoding the signals in a synchronous manner. A standard broadcast format video signal is stripped of its sync signal and separated into its luminance and chrominance components. Additional sync or chroma identifying information for decoding purposes is added in the blanking period between each horizontal sync pulse and each subsequent picture signal information. The chrominance signals and added sync information are processed by a two-stage modulation network, added to the luminance signal and recorded. Upon playback, the encoded signal is decoded by a two-stage demodulation network which utilizes the added sync information to achieve synchronization.

Abstract: Recording apparatus for use in the mastering of a color picture/sound disc includes a source of composite color video signals in which chrominance information appears as sideband components of a chrominance subcarrier interleaved with luminance signal components in an intermediate region of a band occupied by luminance signal components; means for frequency modulating a first carrier over a high frequency deviation range in accordance with composite video signal amplitude; a source of accompanying audio signals; means for frequency modulating a second carrier over a low frequency deviation range in accordance with the audio signal amplitude; means for combining the two modulator outputs, means for clipping the resultant signal; and SEM recorder apparatus responsive to the clipper output for exposing successive groove bottom regions of a disc master coated with electron sensitive material in a manner establishing, upon development, a desired groove bottom depression pattern.

Abstract: A plurality of Schmidt optical systems is clustered together by truncating mutually adjacent edges of mirrors and correcting lenses which comprise individual Schmidt systems. By clustering individual systems together, keystone distortion is minimized.

Abstract: Disclosed is a method and system for obtaining electronic chroma signals with a single scanning-type image device by optically producing a color multiplexed light signal using an arrangement of dichroic filter stripes. In the particular embodiment described a two-layer filter system is used to color-modulate external light which is then detected by an image pickup tube. The resulting time division multiplexed electronic signal from the pickup tube is converted by a decoder into a green color signal, and a single red-blue multiplexed signal, which is demultiplexed to produce red and blue color signals. The three primary color signals are capable of being encoded as standard NTSC color signals.

Abstract: An off-the-air color video recorder employs frequency interleaved chroma and luminance signal information for purposes of bandwidth compression. During playback, the interleaved luminance and chroma signal information are combed apart, the luminance signal information, however, being subjected to at least one additional stage of comb filtering, preferably limited to that part of the playback spectrum containing the interleaved signal information. With such a technique, playback luminance signal information is comprised of two spectrum parts, one being, say, half the signal resolution of the other.

Abstract: A main index signal is generated concurrently with the excitation of a plurality of triplet groups of color generating segments by a sweeping electron beam at a frequency which is a nonintegral number multiplied by the triplet frequency, a frequency at which the triplet groups are excited per a unit time. An auxiliary index signal is generated preceding the occurrence of the main index signal. A frequency counter is provided to convert the frequency of the main index signal to the triplet frequency. The auxiliary signal is delayed, differentiated and used to reset the counter to cancel the content therein to initiate counting of the significant bits of the main index signal at the start of each of the line scansions.

Abstract: A color display system, for example an electronic data display or a color television system incorporates a display screen, for example a cathode ray tube phosphor, and at least one liquid crystal color filter. The screen emits light in the form of visual information in at least two colors, and the filter is controlled electrically in such a way that the colors transmitted by the screen may be switched according to input signal used to energize the screen.

Abstract: An audio to video translator in which an RF oscillator having a frequency within the commercial television broadcast band is coupled to the antenna terminals of a commercial home television receiver and tuned to the selected channel with no other antenna terminal input. The RF oscillator is modulated with vertical and horizontal sync pulses together with the outputs of a color oscillator which in turn is modulated by incoming audio such as from a standard stereo receiver tape deck or record player. Blanking and unblanking pulses from the output of a video generator also modulate the RF oscillator, the video generator being frequency modulated by outputs from the sync pulse generators and the audio channels.

Abstract: An automatic hue-control apparatus having an improved means to keep the color for flesh in the reproduced picture the same as the memory-color for flesh. The apparatus has a signal extracting means for extracting the signal components of the flesh color from the chrominance signals and which feeds these signal components to a phase error detecting means for detecting the phase error between the output signal of the signal extracting means and a reference signal which is in phase quadrature to the phase of the memory-color for flesh. The phase error detecting means produces an error signal indicative of the phase relation between the signals and supplies an output signal to a variable phase-shifting means which is controlled by the output signal of said phase error detecting means to correct the phase error between the chrominance signal and subcarrier reference signal.

Abstract: The columns of a charge transfer imager are arranged in groups with N columns in each group, each column of a group receiving light through a different color filter. Upon the completion of the integration time, each line is shifted out of the imager 1/N'th of a line at a time, each N'th of a line representing a different color component of the image. The different parts of each line subsequently are read serially and concurrently to obtain the N color signal components of each resolution element of the imager.

Abstract: Comb filter apparatus for separating interleaved luminance and chrominance components of a composite color video signal employs a clock controlled delay line of the CCD type to which the composite signal is applied. A VCO supplies clock signals to the CCD delay line, and to a frequency divider. The output of the frequency divider is compared in phase with a color synchronizing component of the undelayed composite color video signal to develop an error signal, which is applied to the VCO in a sense opposing departures from a predetermined phase relationship between the divider output and the synchronizing component. Spurious frequency variations of composite signal components (e.g., accompanying recovery of composite signal by playback of a video disc) are followed by the VCO in a manner assuring that accurate combing of the composite signals occurs at the outputs of circuits providing desired combinations of the delay line input and output.

Abstract: A time base corrector for retiming the chrominance and luminance components of a non-phased television picture signal from a PAL video tape recorder to local reference syncs. The time base corrector comprises digital storage means and an analogue-to-digital converter connected to an input of the storage means. A digital-to-analogue converter is connected to the output of the storage means. "Read" clock pulse generating means are connected with the digital-to-analogue converter and the storage means to trigger the same. A first phase comparator means is operative to compare local horizontal reference signals with horizontal pulses from a divider connected to the "Read" clock pulse means for controlling the output frequency of the same.

Abstract: Hue correction apparatus of the general type described in U.S. Pat. No. 3,663,744 is provided. Chrominance signals are monitored on a dynamic basis and the phase of a color subcarrier reference signal is automatically altered when the chrominance signals are in the vicinity of the flesh tone (+I) axis. The phase of the reference subcarrier is altered, making use of a wide bandwidth phase detector, by controllably adding a portion of an amplitude limited chrominance signal to the subcarrier so as to shift the subcarrier phase towards the phase of the chrominance signal. The range of angles and response of the apparatus is restricted by means of an offset bias control coupled to the chrominance signal adder circuits. Green and blue tones are relatively unaffected by the system operation. Good transient response of the correction apparatus is provided at sharp color transitions.

Abstract: A parallel-to-serial converter is described for use in translating a plurality of parallel line scan signals, derived from scanning a scene, to a serial signal suitable for application to a conventional television-type raster-scan display device. The parallel analog signals from a linear array of photodetectors scanned across a scene are simultaneously clocked into an equal number of charge coupled device (CCD) registers. The stored signals are later read out serially line-after-line and applied to a television type display. Two arrays of CCD registers are provided so that one can be loaded while the other is being read out. Each CCD register for a given line of video information consists of two parallel registers which alternate in receiving (and supplying) signals representing successive elemental areas along the line of the scene.

Abstract: A signal editing and processing technique for converting a plurality of continuous signals, especially long term continuous audio signals respectively relating to short term still picture signals, to a transmitting signal in which signal transmission periods and pause periods are provided, having an integer ratio of time duration with each other, wherein other signals, especially the picture signals, should be transmitted. All continuous signals are sequentially converted to digital signals addressed in accordance with relevant continuous signals, and once stored in arbitrary positions of a memory, and then read out in a given multiplexed sequence corresponding to the transmission periods of the transmitting signal. The read out multiplexed digital signals are sequentially stored in another memory, and then read out with a given high speed equal to that of the signal transmission.

Abstract: Apparatus for generating a display upon the screen of a television receiver which display changes with changes in the audio frequency signal is disclosed comprising a carrier signal source, a color subcarrier signal source, a horizontal synchronizing signal source, and means for varying the phase of the color subcarrier signal in accordance with audio frequency signals only in the absence of horizontal synchronizing signals. Flashing horizontal color stripes are displayed on the screen of a color television receiver in rhythm with the sounds coming from an audio source with the pitch of the sound determining the number of sets of color stripes and the loudness of the sound determining the number of hues within each stripe set.

Abstract: A line selector circuit for a television receiver identifies a predetermined horizontal line. The line to be identified desirably occurs during the vertical blanking interval subsequent to the vertical sync interval contained therein. A line of particular current interest is line 19 which contains reference information which can be used for automatic control of the receiver. The predetermined line is identified through the generation of a timing period which is initiated by a sync pulse synthesized by the summation of horizontal and vertical rate information. The timing period is terminated by horizontal sync information at the beginning of the predetermined line. The timing period is generated by a one-shot multivibrator having a first threshold circuit responsive to the synthesized sync pulse designed to initiate the timing period during the same line in the vertical sync interval of either field.

Abstract: A silicon monolithic integrated circuit color television demodulator includes three sets of full-wave synchronous switched demodulators for demodulating the red, blue and green color signals or color difference signal present in a composite television signal. Each of the demodulators consists of two pairs of switching transistors, and the transistors in each of the pairs are rendered alternately conductive by reference signals derived from a reference oscillator in a color television receiver. Signals from the reference oscillator at the phases of +(R-Y) and -(B-Y) color difference signals are applied to the red and blue demodulators, respectively. The reference signal for the green demodulator is obtained by applying the +(R-Y) reference signal to one transistor of each of the two pairs of switching transistors in the green demodulator and by applying a portion of the -(B-Y) reference signal to the other transistor in each of the pairs.