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| Number | Title | Issue Date |
| 4581644 | Video bus A video component interconnection system includes a single signal conductor video bus serially coupled between each of the video components for conducting video signal between the components. A switch located in series with the video bus separates the con... | 04/08/1986 |
| 4581645 | Distributed switched component audio/video system An interconnection system for an audio and video component entertainment system includes a single conductor audio bus serially coupled between each of the video and audio components transfers audio signal in a "daisy-chain" manner among the components. Th... | 04/08/1986 |
| 4577226 | Noise reduction for FM stereophonic systems and particularly useful in television audio systems In a television system for recovering a stereophonic sound signal including a subcarrier signal, apparatus is provided including a bandpass filter for sensing the noise density of the recovered sound signal. A detector generates a control signal correspon... | 03/18/1986 |
| 4575759 | Component video interconnection apparatus Apparatus for interconnecting a component entertainment system including a bi-directional signal bus for interconnecting some of the components comprises a first switch unit having one input adapted to be coupled to the bi-directional signal bus, at least... | 03/11/1986 |
| 4575757 | PAL offset generator A color subcarrier generator for PAL uses a one-quarter horizontal frequency signal from a sync generator to sample the subcarrier signal. The sampled signal is phase and frequency compared with a 25 Hz (one-half vertical frequency) signal from the same s... | 03/11/1986 |
| 4555163 | Complementary color splitting filters used in a color camera A color beam splitter splits the incoming light into complementary colors such as yellow, magenta, and cyan for improved colorimetry. Stripes are used so that no light is absorbed and therefore a high S/N ratio is achieved. The stripes can be on mirrors o... | 11/26/1985 |
| 4551760 | Television camera with solid-state imagers cooled by a thermal servo A color television camera includes a plurality of solid-state imagers each of which is responsive to different spectral components. A thermal servo senses the temperature of an imager and controls its temperature so as to control thermally generated noise... | 11/05/1985 |
| 4549215 | Low noise black level reference for CCD imagers Low frequency streaking noise which is effected by modulating the black reference with high frequency noise is eliminated from the displayed picture in a television system by switching the signal during the horizontal blanking interval to a noise-free bla... | 10/22/1985 |
| 4547809 | Thermally isolated imager A portable television camera comprises a relatively small housing including a solid-state imager for generating image-representative signals, and signal processing circuitry coupled to the imager for generating a video signal from the image representative... | 10/15/1985 |
| 4544911 | Low cost monotonic digital-to-analog converter A digital-to-analog converter generates an analog output signal which is subject to periodically occurring non-monotonic increments in response to consecutive increments of the value of a digital word. Apparatus in accordance with the present invention su... | 10/01/1985 |
| 4532550 | Exposure time control for a solid-state color camera A television camera includes a solid-state imager which forms a signal representative of the image during an integration interval. The integration interval is followed by a pull-down interval during which the integrated signal is transferred out of the ph... | 07/30/1985 |
| 4525743 | Dark current measurement and control for cameras having field-transfer CCD imagers Output signal samples from a solid-state imager, responsive to dark currents accumulated therein, are applied to slope responsive circuitry for generating a signal which can be used, for example, for field shading correction or imager temperature control.... | 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 |
| 4521810 | Video source selector A switching arrangement for selecting one of a number of video signals. The circuit includes a switch unit preferably in integrated circuit form of pairs of synchronously operated switches for selecting video signal from a particular one of the video sour... | 06/04/1985 |
| 4521804 | Solid-state color TV camera image size control The apparent size of the image produced by a clocked solid-state television imager is controlled by the read clock rate. In a camera using such an imager the clock rate is adjusted to provide an effect similar to zoom. Where a plurality of imagers are use... | 06/04/1985 |
| 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 |
| 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 |
| 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 |
| 4511924 | Frequency translation phase-locked loop for separate or intercarrier type television sound detection A frequency translation phase-locked loop (PLL) is provided for detecting the audio information from a received television signal. The PLL includes a switching arrangement which, in a first position causes the loop to process the IF picture and sound carr... | 04/16/1985 |
| 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 |
| 4503550 | Dynamic CCD input source pulse generating circuit A pulse generator circuit for applying a pulse signal to the input source electrode of a charge coupled device (CCD) having a "fill and spill" input operation, includes a voltage reference circuit for generating the "fill" voltage level of the pulse signa... | 03/05/1985 |
| 4479235 | Switching arrangement for a stereophonic sound synthesizer A system for synthesizing stereophonic signals from an audio information signal source is provided. The system includes a transfer function circuit for producing a modulated signal which varies in amplitude as a function of frequency in response to the au... | 10/23/1984 |
| 4476583 | Electronic tracking for tuners A tuning system for a receiver for providing an IF signal from a selected one of RF signals residing in a signal frequency band, comprises filter means for passing RF signals corresponding to a selected channel in response to a filter tuning control signa... | 10/09/1984 |
| 4470071 | Television sound detection system using a frequency translation phase-locked loop A frequency translation phase-locked loop (PLL) is provided for detecting the audio information from a television signal. A voltage controllable oscillator having a nominal oscillation frequency equal to the frequency difference between the intermediate f... | 09/04/1984 |
| 4470070 | Frequency translation phase-locked loop television sound detection system A frequency translation phase-locked loop (PLL) is provided for detecting the audio information from a television signal. The PLL includes a mixer and a phase detector, responsive to the intermediate picture and sound carriers respectively, which carriers... | 09/04/1984 |
| 4395735 | FM Counter detector A counter-type detector system is provided for a television receiver in which a standard angle modulated intermediate frequency signal is heterodyned to a lower frequency prior to detection by the counter detector. The lower intermediate frequency permits... | 07/26/1983 |
| 4387413 | Semiconductor apparatus with integral heat sink tab A semiconductor package is provided in which the semiconductor element is bonded to a slab of metal and is encapsulated in a body of insulating epoxy. Lead terminals are connected to the semiconductor element within the body and extend out from one end of... | 06/07/1983 |
