Abstract: A combination of a television receiver and a television signal recording and/or reproducing apparatus, such as a so-called video tape recorder, forming a television system for receiving, recording and/or reproducing television signals and displaying images thereof, wherein the television receiver portion contains two separate signal selecting and receiving circuitries each including a separately tunable tuner, an intermediate frequency stage and a detector stage, and specific television signals received by the respective circuitries are selectively applied by selecting switches in the television receiver portion to the display stage of the portion of the television receiver for display of images or to the portion of the signal recording and/or reproducing apparatus for recording.

Abstract: A color video display system employing a flat panel of X-Y matrix type for displaying color pictures thereon and a signal sampling means for sampling input color signals such that sampling phases for different color component signals are sequentially shifted with respect to each other in order to improve the resolution of the reproduced pictures; sampling pulses for neighboring color component signals may be separated by a predetermined interval in order to eliminate or reduce sampling noises from the pictures reproduced on the flat panel.

Abstract: A system of shortening transition time of transitions occurring in video signals is disclosed which includes circuitry for multiplying a function of the full wave rectified first differential of the input video signal by a function of the second differential of the input video signal and then adding the waveform resulting from such a product to the properly delayed input signal to provide a crispened output video signal. The system may be provided to crispen the luminance and chroma signals of a color television video signal. A system for shortening transitions of low bandwidth chroma information with higher bandwidth luminance information is also disclosed.

Abstract: A binary quantized TV video signal of any single one of a plurality of different symbols is generated and then successively sampled at respective dot positions thereof, with the binary value of each sample being stored at a corresponding dot position of an individual one of a plurality of dot matrices of the memory, that dot matrix being located at a preselected address location of the memory. The whole process is under the control of a programmed sequence control generator which is capable of automatically controlling the loading of each of the plurality of different symbols, in turn, into its own preselected address location dot matrix of the memory.

Abstract: Apparatus for providing visible video information has equipment for providing electrical video information including picture signals and picture synchronizing signals affected by flutter, and equipment for processing synchronizing signals. This processing equipment effects a stabilization of synchronizing signals against at least part of the mentioned flutter. Equipment is connected to the video information providing equipment and to the synchronizing signal processing equipment for displaying video information contained in the picture signals. This displaying equipment effects synchronization of the video information with the processed synchronizing signals. Equipment is connected between a video information providing equipment and the synchronizing signal processing equipment for compensating the stabilizing function of the mentioned stabilization, whereby the displayed video information is synchronized with synchronizing signals affected by essentially the same flutter as the picture signals.

Abstract: Apparatus for monitoring the use of television receivers to obtain information for the rating of television programs. The apparatus makes a comparison between the intercarrier frequency signal (i.e., phase) produced by extracting from an operating television receiver tuned to a channel the visual and aural IF frequencies and the respective intercarrier frequency signals (i.e., phase) produced by successively extracting from transmitting sources of television channels the visual and aural IF frequencies. The intermediate frequency signals of the television receiver are sampled and converted into an intercarrier frequency signal. A voltage controlled tuner is tuned to the radio frequency carriers of the various television channels in a hunting sequence. The output signals of the voltage controlled tuner are intermediate frequency signals, which are converted into intercarrier signals.

Abstract: Signals from a remote control transducer are decoded in a television receiver to cause display of characters in a predetermined color on a color display tube when a particular function control mode such as hue or saturation control is remotely selected.

Abstract: A method and system is provided for driving a self-scanned photosensor array at high sensor cell scan rates, and sampling the sensor cells serially addressed by the array without comprising either image integrity or array frame rate.End of line (EOL) and end of frame (EOF) timing signals generated by the array are sensed and operated upon to limit the voltage amplitude swings of the signals, and to reduce noise modulation in the output video signal. A single synchronization signal is formed from the timing signals to accurately identify the last cell of a frame to be scanned, and to synchronize a row counter driving one of two flip-flops providing biphase array clock signals as the flip-flops have minimal pulse skew between complementary outputs, the effects of fixed pattern odd/even noise in the output video signal are substantially reduced. Further, the flip-flops uniquely provide large voltage amplitude swings without attendant heat generation problems.

Abstract: It has been determined that the amplitude accuracy required for specification of the chrominance portion of a color video signal is related to the spatial activity of the luminance portion of the signal. Accordingly, coding efficiency is improved in a digital transmission system by (1) defining a measure of the luminance activity and (2) changing chrominance coding strategy in accordance with the luminance activity measure. In one specific arrangement, coarse and fine quantizers are provided in an adaptive DPCM encoder. The coarse quantizer is used where luminance activity is high and the fine quantizer used only when the activity is low. In another arrangement, a variable gain circuit is disposed in the direct loop of an encoder with a fixed quantizer, and a variable attenuator is disposed in the feedback loop. For large spatial activity, the gain of the amplifier and the attenuator coefficient are held low; for small spatial activity the opposite condition prevails.

Abstract: A laser structure for generating white laser light when energized by a source of dc voltage. The laser tube structure comprises a gas-filled envelope having a longitudinal axis, an anode electrode forming a portion of the envelope. A hollow cathode is positioned within the envelope and coaxially disposed with respect to the anode electrode portion of the envelope. Members are coaxially aligned with the ends of the envelope such that a structure is provided for confining a gaseous medium therein, a dc voltage applied between the cathode and anode electrode creating a discharge therebetween, the discharge stimulating continuous wave laser emission along the longitudinal axis of the cathode, the laser emission comprising simultaneous multi-line emissions in the form of white light.

Abstract: A circuit arrangement for demodulating the chrominance signal portion of a color television signal in an apparatus for receiving at least said color television signal is described. The chrominance signal to be demodulated is of the type that is coded according to the ISA (Identify Suppressing Alternately) system, i.e. the chromatic information modulates in amplitude by carrier suppression a subcarrier along two axes in quadrature, one of the axes being switched 180.degree. each line, a single reference signal of constant phase being inserted only every second line and serving as a reference signal for the demodulation of said subcarrier and as an identification signal for the switching. According to the invention, an electronic gate is provided which opens during part of every second line scanning period to allow the passage of the single reference signal to a passive crystal filter.

Abstract: A display device for producing polychromatic luminous images comprising a display panel containing gas cells, electrodes for ionization of the gas, and a photoconductive layer located between the electrodes and responsive to a scanning invisible radiating beam. Each cell further comprises luminophore emitting primary visible radiations at the time of ionization of the gas, the ionization being effected by rendering the photoconductive layer locally conductive.

Abstract: In a method of preparing color separation printing patterns from a multi-color original design, the design is irradiated by light and multi-color light components reflected from minute picture elements constituting the design are detected. The detected light components are converted to picture element data representative of the optical energy level of the reflected light corresponding to each picture element. The picture element data are stored and filtered to form quantized picture element data indicative of several series of reflected light components respectively falling within different preselected ranges of color. This is done by comparing successive picture element data to detect significant differences in energy level indicative of color changes. The reason for each substantial difference in output level is determined, e.g., pattern defect or imperfection, and the filtered picture element data are stored along with change codes indicative of the reason for the difference.

Abstract: A video information reproduction circuitry for use in a video disc player of a type utilizing a combination of a scanning transducer and a flexible foil-type disc record having at least one surface formed with a spirally extending information-carrier groove in which the scanning transducer is slidingly engaged during reproduction of video information, is provided with a drop-out compensation circuit for substantially avoiding a possibility of color streaks and black and white dots, which may otherwise occur on a picture tube.

Abstract: Two charge coupled devices (which will be hereinafter referred to as CCD chips) are employed in a solid state camera system wherein color filters, each consisting of horizontally extended color stripe filter elements, are disposed in front of the respective CCD chips. Object images are projected onto the respective CCD chips through the color filters such that the object image on one CCD chip is shifted by .tau..sub.H/2 (where .tau..sub.H is the alignment pitch of picture elements in the direction of horizontal scanning) relative to the object image on the other CCD chip. To read image information from the CCD chips, the read-out timing as between the two chips is different by .tau..sub.H/2 to compensating for the image displacement of the chips.

Abstract: A gamma correction circuit is disclosed which includes an amplifier for amplifying a video input signal, a series connection of diode connected transistors whose input terminal is coupled to the output terminal of the amplifier and a cascade connection of emitter follower transistors whose output terminal is connected to the output terminal of the series connection of the diode connected transistors and is grounded through a resistor and whose input terminal is supplied with control signals.

Abstract: In an apparatus for processing reproduced color video signals composed of a frequency-modulated luminance component and a frequency-converted chrominance component having its carrier frequency substantially below a standard frequency therefor; there are provided a drop-out compensating circuit responsive to a drop-out in the luminance component for inserting, in the interval of such drop-out, an earlier occurring portion of the luminance component, a frequency-converter receiving the chrominance component and a frequency-reconverting signal for restoring the carrier frequency to the standard frequency therefor, an automatic frequency control circuit (AFC) responsive to horizontal synchronizing signals separated from the luminance component after the drop-out compensation thereof so as to regulate the frequency-reconverting signal in the sense for removing time base errors from the reproduced color video signals, and a circuit which is responsive to a drop-out in the luminance component for maintaining the fre

Abstract: A scanned video display system in which a stress wave propagating medium forms a viewing plane and scanning is accomplished in a first scanning direction by stress waves propagated along the medium, while scanning in a second scanning direction is accomplished by emitting light along a scan line in the second direction. The light emitted along the scan line in the second direction is modulated in intensity by a video signal and is incident upon each of the stress waves over the extent of the viewing plane so as to produce a video modulated beam of light scanned in the two dimensions or directions of the viewing plane. In one embodiment, the emitted light is polarized in a first direction and passes through the stress wave propagating medium. The light is again polarized after passing through the medium but in a direction orthogonal to the first direction.

Abstract: Successive field intervals of a composite color television signal are respectively recorded on successive recording tracks which extend parallel to one another on a record medium such as a magnetic tape. During the reproduction of a color television signal in a conventional VTR (video tape recorder), successive field intervals of the color television signal are alternately reproduced from the successive record tracks by means of two signal reproducing heads which are switched alternately.

Abstract: In a processing circuit of the type using pre-emphasis of the composite color television signal and frequency modulation, an amplitude compressor is used for selectively compressing the higher portion including the chrominance sub-carrier, of the frequency spectrum of the composite signal, prior to pre-emphasis of the latter.