Abstract: By dividing the split gate electrode into four sections, in which two non-adjacent sections are solely clock sections and the other two sections are "plus" and "minus" sections, respectively, and in which the sum of the lengths of the first two sections, in serial order, is substantially equal to the sum of the last two sections, in serial order, only a single mask must be changed, in the fabrication of transversal filters that exhibit a small common mode, in order to change the particular filter characteristic of a fabricated filter.

Abstract: Digital control means responsive to an applied digital signal controls which row or rows of an N row-Q column CCD imager are effective in transferring charge and which are not. Such digital control is suitable for use in providing variable gain for a time-delay integration (TDI) charge-transfer imager in accordance with the average brightness level of the light incident on the imager.

Abstract: A jam-resistant receiver for a TV signal in which each vertical sync pulse is replaced by several increasingly-delayed symbols from a pseudo-random number generator. A correlator produces a correlation pulse on receipt of a predetermined one of the symbols. The pulse is used to generate reconstituted vertical sync pulses having the correct phase. If the correlation pulse falls below a threshold value due to interference, the receiver automatically shifts to the use of a different symbol for synchronization.

Abstract: A signal to be quantized is translated to a charge Q and the latter is multiplied by a fraction f to produce a fractional charge packet fQ. Then, another fractional charge packet is produced by multiplying the remainder Q(1-f) of the charge packet by f. This last step is repeated for succeeding remainder charge packets a sufficient number of times until a total of n-1 fractional charge packets have been produced, where n is the number of quantization levels desired. The successive fractional charge packets are compared with threshold levels of different amplitudes to determine the number of incremental charge packets, each of the same size, to be added to one another to form a quantized charge packet.

Abstract: Miniaturized optics comprising transverse and lateral cylindrical lenses composed of millimeter-sized rods with diameters, indices-of-refraction and spacing such that substantially all the light emitted as an asymmetrical beam from the emitting junction of the laser is collected and translated to a symmetrical beam.

Abstract: The recording blank comprises a substrate having a non-etchable surface which incorporates a given surface relief pattern diffractive structure, an etchable metal overcoating in contact with the diffractive structure which overcoating has a smooth exterior surface, and a photoresist layer in contact with this smooth exterior surface. This permits a simple technique to be employed in fabricating a high quality embossing master.

Abstract: Enhanced optical coupling by phase evanescent fields is achieved by covering the planar layer of a waveguide with a thin metal oxide film incorporating a relief phase grating. The grating is originally formed in a metallic film covering the planar layer, which metallic film is converted to a metal oxide film by heating in an oxygen-containing atmosphere.

Abstract: Ragged vertical edges normally displayed by a NTSC color-carrier on a non-interlaced display are effectively eliminated through persistence of vision by altering the duration of a selected single scan-line of the non-display portion of each of successive fields by an odd number of half-cycles of the NTSC color-carrier frequency.

Abstract: A jam-resistant TV transmission system including means to transmit a composite video signal in which each vertical sync pulse is replaced by several increasingly-delayed symbols from a pseudo-random number generator. Receiver means includes a correlator which produces a correlation pulse on receipt of a predetermined one of the symbols. The timing of the correlation pulse and the known delay of the predetermined symbol are used to generate reconstituted vertical sync pulses.

Abstract: Apparatus for continuously reading out the graphic information represented by a charge pattern on a dielectric film includes an integrated circuit array of field effect devices each having a source and drain in series with a respective p-n junction photodiodes. A bias voltage is connected across the field effect devices and respective photodiodes and a load impedance. A scanner positioned to scan a spot of light over the array of photodiodes causes conduction of currents through field effect devices which are rendered conductive by charges on the dielectric film to produce a video signal across the load impedance.

Abstract: By selecting the respective values of (1) the f-number of the camera objective, (2) the periodicity of a lenticular array used to image a periodic color encoding filter on a solid-state imager comprised of a periodic spatial pattern of discrete light-sensing cells, and (3) the object and image distances of the array, in accordance with the teachings of this invention, a high-resolution television picture without moire patterns may be generated.

Abstract: The use of a digital frequency translator, using pulse snatching techniques, for multiplying the output frequency of a precise and accurate frequency synthesizer by a preselected certain numerical fraction permits the frequency synthesizer to be referred to a molecular clock with only a single VCXO phase lock loop.

Abstract: A thin plate of III-V direct-bandgap semiconductor, preferably with anti-reflective coatings, operates as superior optical filter for light having a wavelength which exceeds a given wavelength in the visible or infra-red spectrum. Such a filter is particularly suitable for use in a duplex optical communication system employing a fiber-optic transmission line.

Abstract: The method of, and apparatus for, producing an electrical video signal representing a charge pattern on an insulating dielectric sheet or film, without destroying the charge pattern, including the steps of: placing a transparent electrode on the free top surface of the dielectric film, placing the dielectric film having the charge pattern in close contact with the free top surface of an uncharged photoconductor having a back electrode connected to a load impedance, and scanning the photoconductor through said transparent electrode and said dielectric film with a flying spot of light to produce a video electrical signal across the load impedance during the scanning.

Abstract: Use of multi-bit digital arctangent function-generator to remove noise-clutter amplitude-modulation from in-phase and quadrature phase multi-bit successive samples of MTI canceller outputs and n-bit running correlation of digitized samples with serial phase code, result in increasing effective CFAR sensitivity of radar receiver.

Abstract: By replacing continuous channel stops with spaced channel-stop islands arranged in a plurality of rows, the substrate of an imager may be divided into a predetermined two-dimensional array of spaced charge-storage islands that communicate with one another through intervening charge-transfer regions. This permits the packing density of picture elements per unit substrate area to be nearly doubled and also reduces the noticeable distortion due to "blooming" in a television picture derived from such an imager.

Abstract: A hologram recording system useful for recording holograms for use on a film strip tape in an optical retreival system is disclosed. The recording system permits accurate centering of a selected one of a series of frames. A hologram for use on a film strip tape is recorded with interfering divergent beams of .lambda..sub.1 wavelength coherent wave energy for readout with a plane wave of .lambda..sub.2 wavelength coherent wave energy to provide a reconstruction in a plane spaced a preselected distance Z.sub.3 from the plane of the hologram record being read out. The respective distances Z.sub.1 and Z.sub.2 of the effective optical crossovers of the two divergent recording beams from the plane of the hologram recording medium are uniquely functionally related to the preselected distance Z.sub.3 and the ratio .lambda..sub.2 /.lambda..sub.1.

Abstract: One or more additional helical coil windings (each situated within a space between adjacent ones of a plurality of paced ferromagnetic shielding cans of graduated size and (each one of which encloses all cans smaller than itself), are oriented coaxial with the helical coil winding of the maser itself (situated within the innermost can). This permits optimum degaussing to be achieved with small degaussing current.

Abstract: The spatial field is sequentially convolved at each of a plurality of uniformly-spaced intervals along a field dimension with a given type of limited spatial extent kernel function which preferably has a one-octave spatial bandwidth. Convolution combining means derives an output only if the q'th power of the sequential convolutions exceed a threshold corresponding to the just-noticeable presence of spatial frequencies within the spatial bandwidth of the kernel function.

Abstract: System for the analysis of an optically sensed field, useful, for example, for detecting defects in an object such as a shadow mask of a color kinescope, which permits relatively rapid examination of the article or surface being scanned. An important feature of the system is a detector linear array disposed a selected distance from the image plane of the spatial field permits higher speed sequential convolution of the spatial field at each of a plurality of overlapping segments of given length, situated at uniformly-spaced intervals along a field dimension, with a given type of limited spatial extent kernel function of said given length.