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| Number | Title | Issue Date |
| 4811371 | Floating-diffusion electrometer with adjustable sensitivity The effective capacitance of the floating diffusion in a floating-diffusion electrometer is modified to adjust electrometer sensitivity. This is done by changing the direct potential applied to a gate electrode proximate to the floating diffusion.... | 03/07/1989 |
| 4754447 | Multidisk spindle A multidisk spindle includes a plurality of mounting plates affixed to a shaft for mounting an equal plurality of record disks thereon such that the disks are parallel to each other and perpendicular to the rotational axis of the shaft. The shape of the m... | 06/28/1988 |
| 4668973 | Semiconductor device passivated with phosphosilicate glass over silicon nitride The semiconductor device includes a layer of silicon nitride (Si3 N4) beneath a phosphosilicate glass (PSG) layer. A silicon nitride impervious layer prevents the oxidation of underlying, exposed silicon regions during a "flow" step ... | 05/26/1987 |
| 4581630 | Constant width burst gate keying pulse generator A keying pulse generator for a color television burst gate provides a gating pulse in response to horizontal synchronizing pulses when present and in response to horizontal retrace pulses when sync pulses are absent. A timing circuit is provided to mainta... | 04/08/1986 |
| 4544939 | Schottky-barrier diode radiant energy detector with extended longer wavelength response The upper limit of longer wavelength response of a radiation detector using a Schottky-barrier diode operated in hot carrier mode is extended by a layer of relatively high concentration impurities ion implanted in Schottky barrier contact surface of the s... | 10/01/1985 |
| 4525375 | Method of controllong the deposition of hydrogenated amorphous silicon and apparatus therefor An improved method and apparatus for the controlled deposition of a layer of hydrogenated amorphous silicon on a substrate. Means is provided for the illumination of the coated surface of the substrate and measurement of the resulting photovoltage at the ... | 06/25/1985 |
| 4524387 | Synchronization input for television receiver on-screen alphanumeric display An arrangement for a television receiver is disclosed which facilitates the coupling of synchronization signals to an on-screen display integrated circuit of the receiver. The receiver includes sources of periodic vertical and horizontal rate pulses. A co... | 06/18/1985 |
| 4523227 | System for synchronizing a video signal having a first frame rate to a second frame rate A synchronizer receives from a tape playback arrangement television frames at a rate which is slightly higher or slightly lower than a standard frame-rate. The synchronizer includes four frames of storage, and reading and writing are continuous. In a mode... | 06/11/1985 |
| 4517602 | Dynamic noise filter for an audio signal in a television A dynamic noise filter especially adapted for use in audio reproduction systems within a television display device is provided to eliminate perceived noise. An audio signal having a relatively wide frequency range is passed through a variable bandwidth lo... | 05/14/1985 |
| 4516168 | Shutdown circuit for a switching regulator in a remote controlled television receiver In a switching regulator power supply, the primary winding of a switching transformer is coupled to a source of input voltage and to a power switch. Secondary supply voltages for a load circuit such as a television receiver are obtained from a secondary w... | 05/07/1985 |
| 4516231 | Optical disc system having momentum compensation The focus actuator, turntable and translation stage in an optical disc record/playback system may effect relatively large reaction forces on the components of the system. These reaction forces can cause vibrations which interfere with or distort informati... | 05/07/1985 |
| 4516233 | Disc record player having player control apparatus When a caddy is inserted into the player to load a record therein, it displaces a switch actuating lever to a second position thereof to turn on the player. The switch actuating lever moves back to its first position upon retrieval of the record from the ... | 05/07/1985 |
| 4516058 | Linearity corrected horizontal deflection circuit A linearity correction circuit for use with the horizontal deflection circuit of a television receiver comprises an inductor having two inductor portions. A capacitor, coupled to the S-shaping capacitor of the horizontal deflection circuit, is charged thr... | 05/07/1985 |
| 4516167 | Compression of the dynamic range of video signals Video signals are subjected to two-dimensional high-pass spatial filtering as a first step in reducing their dynamic range. Then, in a second step of the compression process, differentiation spikes generated in response to edges of large objects in the or... | 05/07/1985 |
| 4514763 | Sound signal and impulse noise detector for television receivers In a television signal processing apparatus, a phase-locked loop (PLL) is provided for detecting the audio information from the television signal and for providing a defect control signal which, when applied to compensation circuitry, reduces impulse nois... | 04/30/1985 |
| 4513394 | System for providing a multi-bit input to a computer controlled system A system for inputting a multi-bit input to a computer in response to the closing of a single switch includes a multi-line to a single line encoder. A plurality of input switches individually set different input position numbers into the encoder. When the... | 04/23/1985 |
| 4513323 | Buzz reduction for intercarrier type television sound detection A television receiver in which a modulated IF picture carrier, after passing through a sloped attenuation region of an IF amplifying stage, is used to produce an intercarrier sound signal. An audio buzz reduction system is provided in which phase modulati... | 04/23/1985 |
| 4513321 | Black level clamp for television signals A black-level clamp for a signal derived from a transducer such as a camera tube includes a controllable voltage offset generator such as a series capacitor or an amplifier. The television signal is sampled during the horizontal sync interval to produce a... | 04/23/1985 |
| 4513292 | Dipole radiating element A one-piece array antenna dipole radiating element is formed from a wide, thin conductor. This element is suitable for attachment to a microstrip or other feed circuit. The radiation element includes a dipole portion, a balanced transmission line portion ... | 04/23/1985 |
| 4511921 | Television receiver with manual and selectively disabled automatic picture control A source of variable DC gain control voltage for a gain controllable video display system including an image display kinescope comprises a manually adjustable potentiometer, and a variable conduction ambient light sensing device located in proximity to th... | 04/16/1985 |
| 4510104 | Apparatus and method for automatically controlling an extruder for thermoplastic material There is described herein a method of operating an extruder for thermoplastic material to automatically control the output of the extruder. The extruder includes a kneader screw, a hopper having a feed screw for feeding the thermoplastic material in dry p... | 04/09/1985 |
| 4510469 | Selective waveguide mode converter A mode converter is disclosed which selectively generates a predetermined higher order mode(s) from an incident fundamental mode. This mode converter comprises a dielectric region having an effective-dielectric-constant/thickness profile which is the same... | 04/09/1985 |
| 4510501 | Broadband loop antenna with low wind resistance An antenna for CP signals uses a reflector, such as a truncated pyramid. Feed tubes, which act as a balun extend from the pyramid. Four truncated square loops are coupled to the feed means. The truncation results in a smaller radome being used and hence s... | 04/09/1985 |
| 4510522 | CCD Comb filter employing floating gate subtractor techniques A charge transfer device (CTD) delay line comb filter for separating the frequency interleaved luminance and chrominance components of a composite video signal is provided wherein signal charges representative of the composite video signal within first an... | 04/09/1985 |
| 4510564 | Synchronously detected DC/DC converter for regulated power supply A regulated power supply has a synchronous detector in a voltage regulator feedback loop. The detector is coupled to a secondary of a transformer to detect the AC voltage. The result is faster response time to a step change in the primary voltage and all ... | 04/09/1985 |
| 4510579 | Fast correlation system A receiver in a communication system employing a transmitted signal consisting of a succession of N chip PRS data codes randomly selected from M PRS data codes and each multiplied by an N chip master PRS code to form a succession of encoded PRS codes whic... | 04/09/1985 |
| 4509080 | Video signal peaking system In the luminance channel of a color TV receiver, a horizontal peaking signal representative of the difference between delayed and undelayed luminance signals is subject to coring, with the level of coring subject to variation. Residual peaking signal rema... | 04/02/1985 |
| 4508975 | Pulse duration modulator using charge coupled devices Pulse-duration-modulated signal is generated from samples of an analog signal voltage in a CCD device by fill-and-spill input of charge into the CCD device, scooping of fixed unit charge to generate a pulse train with pulses in a number proportional to th... | 04/02/1985 |
| 4509210 | Television receiver adaptable for descrambler module A television receiver is adapted for use of standardized plug-in descramblers which are coupled to the receiver by a connector. The connector is accessible from the exterior of the housing of the receiver without significant disassembly. The connector has... | 04/02/1985 |
| 4509181 | CCD charge substraction arrangement Charge subtraction for charge packets of two charge transfer device (CTD) delay lines is provided by alternately transferring them under a periodically clamped, normally floating sense gate, common to both delay lines. Adjacent the sense electrode, each d... | 04/02/1985 |
| 4507873 | Apparatus for accurately establishing the sealing length of CRT envelopes A support for establishing the sealing length of kinescopes includes a pivotable support. The support is contoured to conform with a contoured neck area of the kinescope whereby the contour references the envelope to a seal plane.... | 04/02/1985 |
| 4507679 | Color TV camera with four-port prism A color television camera includes a color splitting prism and solid-state imagers responsive to different colors. In order to enhance resolution, two offset green-responsive imagers are coupled to prism ports to which green light is propagated and their ... | 03/26/1985 |
| 4507676 | Digital matrixing system A matrix for digital video signals separates each coefficient into a binary part and a remainder. The binary part can be implemented very simply by a hardwired right shift. The remainder can be implemented using a ROM. Less ROM memory space is required th... | 03/26/1985 |
| 4507649 | Flash A/D converter having reduced input loading A flash analog-to-digital converter includes 2N comparator circuits for an N bit resolution. Each comparator comprises a summing capacitor which is alternately connected to a reference ladder and to the input signal. The majority of the capacit... | 03/26/1985 |
| 4507591 | Linear pulse width to current converter for brushless DC motors A system for controlling the speed of a brushless DC motor includes a microprocessor for generating stator control drive signals responsive to Hall sensors detecting relative rotor-pole-stator positions. Hall sensor signal transitions are compared against... | 03/26/1985 |
| 4507684 | Reducing grain in multi-phase-clocked CCD imagers Grain, a fixed pattern noise which is not attributable just to dark current variations in the imager and which persists even in relatively bright images, is reduced in a CCD imager with three-phase-clocked imager register by introducing an offset potentia... | 03/26/1985 |
| 4507725 | Digital filter overflow sensor A sampled data FIR filter of the type including alternately connected ADDER circuits and delay stages in a serial chain where input samples are multiplied by coefficients and applied in parallel to the ADDER circuits for addition to partial sums therein h... | 03/26/1985 |
| 4507773 | High efficiency precision laser beam switch An optical beam switch is provided in a multiple beam optical disc record and playback system. Current systems for very high data rate optical disc mass memory apparatus include requirements for near-continuous recording of data using two separate turntab... | 03/26/1985 |
| 4507334 | Surface preparation for determining diffusion length by the surface photovoltage method A method of treating the surface of a sample of n-type silicon material in preparation for measurements for determining the minority carrier diffusion length of the material by the surface photovoltage method comprises applying a strong oxidizing agent to... | 03/26/1985 |
| 4506949 | Diffractive color separation filter The use of a rhomboid-shaped phase grating to derive, from polychromatic input light, plus-one, minus-one and zero diffraction order output beams each of a different independent color.... | 03/26/1985 |
