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| Number | Title | Issue Date |
| 4673981 | Unrecordable video signals A technique for handling video signals so as to permit such signals to be satisfactorily displayed on video display devices, such as TV receivers or monitors, but to prevent such signals from being satisfactorily recorded by video recording devices. In a ... | 06/16/1987 |
| 4672444 | Method for transmitting a high-resolution image over a narrow-band communication channel By analyzing the spatial-frequency spectrum of a high-resolution image into a low-pass remnant subspectrum band having a nominal high-frequency cutoff below that of one or more other spatial frequency bands, and separately transmitting each band, starting... | 06/09/1987 |
| 4665427 | Method and apparatus for converting C-MAC television signals for transmission over a limited bandwidth medium A wide-band frequency modulated DBS signal of the type having time sequential compressed chrominance and luminance (video) components is received by an aerial (1), frequency converted in a down converter (2) and applied to the input (4) of a conversion un... | 05/12/1987 |
| 4654695 | Apparatus for reducing the resolution of video samples by truncating the most significant bits A pix-in-pix television display, with a digital memory for holding samples representing one field of the small picture, includes circuitry for converting eight-bit luminance samples into five-bit samples for efficient storage in the digital memory. A subt... | 03/31/1987 |
| 4633293 | High definition television signal for film-television standards conversion system A high definition television production system generates a high definition video signal that is easily convertible to signals formatted in accordance with other television and film standards of release media. Such other standards may include 525/60 and 62... | 12/30/1986 |
| 4612573 | Method for clock rate conversion A method for clock rate conversion of digitized television signals for the acquisition of a television signal having a prescribed processing clock rate is provided wherein the digitized television signal is band-limited, a clock rate conversion being subs... | 09/16/1986 |
| 4608598 | Thermal imaging apparatus A plurality of thermal images of an observed object at different times are simultaneously displayed on a single screen of a television monitor simply and economically. The thermal imaging apparatus includes an infrared camera to scan the observed object a... | 08/26/1986 |
| 4602274 | IYQY format television signal encoding and decoding apparatus Encoding apparatus, situated at the transmitter and employing digital processing, transforms an NTSC format color television signal to a serial time-multiplexed IYQY format which (1) preserves the blanking level of the NTSC signal, and (2) time compresses... | 07/22/1986 |
| 4587569 | Printer for printing multi-standard television signals A printer for printing multi-standard T.V. signals achieved by an arrangement in which the starting point of time for the horizontal and vertical writing is controlled by varying set values corresponding to the respective multi-standard signals. The set v... | 05/06/1986 |
| 4578812 | Digital image processing by hardware using cubic convolution interpolation Disclosed is hardware for providing pixel data by interpolation. In the hardware previously memorized weight factors corresponding to the particular site are retrieved under the influence of the outputs of addressing circuits, multiplied with the original... | 03/25/1986 |
| 4551752 | Method and apparatus for correcting distortion in an image which is recorded electronically and built up along lines A method and a device for correcting distortion in an image recorded electronically and built up of picture elements along lines. The distortion arises due to the fact that in a field of view scanned along curved lines (31, 33, 35), the picture elements s... | 11/05/1985 |
| 4549224 | Digital video tape recorder that can be used with different television systems A digital video tape recorder (VTR) for use with an NTSC, PAL or SECAM television signal includes a reference signal generating circuit which generates a reference signal having a frequency of 13.5 MHz; a first frequency dividing circuit (1/45045) for use... | 10/22/1985 |
| 4504852 | Method and apparatus for video standard conversion A video signal having a given line scan rate is converted to a different line scan rate by analog encoding such that each scan line is divided into a finite number of picture elements and video information corresponding to each picture element is modulate... | 03/12/1985 |
| 4497024 | Nuclear image display controller In a nuclear imaging system the digitized x and y coordinates of gamma ray photon emission events address memory locations corresponding to the coordinates. The respective locations are incremented each time they are addressed so at the end of a selected ... | 01/29/1985 |
| 4484188 | Graphics video resolution improvement apparatus A video signal generation apparatus improves the resolution of the video signal by forming additional video scan lines between the successive scan lines by combining the video attributes of adjacent scan lines. This invention is particularly applicable to... | 11/20/1984 |
| 4477834 | Scan conversion circuit A scan conversion circuit for a thermal imager device in which a field is scanned by a parallel-series array of infra-red detectors swept broadside over the field to produce a band of parallel I.R. signals. The signals from the array of detectors are samp... | 10/16/1984 |
| 4471449 | Scan converter system Apparatus for interpolating data along radial lines so that it can be displayed at display points arranged in orthogonal rows and columns by recursively adding stored values to derive signals indicative of the radial position of each display point along t... | 09/11/1984 |
| 4468747 | Scan converter system Apparatus for displaying the information represented by data samples occurring along radial lines at display points arranged in rows and columns wherein intermediate interpolated data values are derived at the intersections of a row containing a display p... | 08/28/1984 |
| 4449143 | Transcodeable vertically scanned high-definition television system A high-definition television system for electronic cinematography includes vertical scanning for ease of line-rate transcoding or adaptation to standard-definition television systems. The number of vertical line-scans is selected for transcoding to a stan... | 05/15/1984 |
| 4387395 | Facsimile to video converter A facsimile to video converter responds to a high bit rate binary signal and produces a single digital (or analog) signal which represents a plurality of pixels for driving a raster scanned display to thereby generate a visual image represented by the bin... | 06/07/1983 |
| 4358789 | Digital scan converter for image scanning and display system A scan converter circuit for use in a imaging system that uses a sinusoidally oscillating scanning reflector for scanning an object and a constant rate scanned display monitor for displaying an image of the object. The circuit enables a variable time rate... | 11/09/1982 |
| 4319274 | Method of recording image information on the target of a scan converter tube A method and apparatus for recording and superimposing image information on the target of a scan converter tube. The image information is supplied in the form of an electric video signal by means whereof the electron beam projected from the cathode of the... | 03/09/1982 |
| 4310853 | Data simulation in sector scan imaging systems Encoded data is sequentially read into a shift register having a number of stages larger than the largest inter-scan "void" or "hole" to be filled. A priority encoder determines the length of the void to be filled, and the amplitude difference of successi... | 01/12/1982 |
| 4310907 | Scan converter for a sector scan type ultrasound imaging system A scan converter is disclosed for use in a sector scan type ultrasound imaging system in which ultrasound echo signals return from targets along a plurality of radial scan lines distributed in a sector field with a substantially equal tangential angular i... | 01/12/1982 |
| 4303940 | Raster manipulated television receiver A television receiver is disclosed for selectively displaying either a 525 line NTSC video signal or a 625 line European teletext or Viewdata signal. The receiver includes two vertical countdown circuits: a 525 line countdown circuit for use in generating... | 12/01/1981 |
| 4246609 | Switchable synchronizing-signal generator suitable for several television standards A switchable synchronizing-signal generator suitable for several television standards, information being supplied from a series arrangement of a clock pulse generator and frequency dividers to a synchronizing signal generator. The generator has a position... | 01/20/1981 |
| 4196447 | Facsimile to video converter Facsimile weather radar information (800 lines/frame) is stored, every third line, in a solid state RAM 35, capacity 256 three bit words per line, 256 lines. Subdivision of digital information from A/D converter 30 into digital words is accomplished using... | 04/01/1980 |
| 4183043 | Trilinear sequential transmission system for a color television signal, particularly for a recording The disclosure is an improvement in a three-line sequential transmission system for a color television signal, particularly for recording, and where the sequential signal is transformed again, during reproduction with a series-connection of line delay lin... | 01/08/1980 |
| 4135140 | Ultrasonic imaging apparatus operating according to the impulse-echo method In the illustrated embodiment the ultrasonic applicator is activated to emit ultrasonic pulses along a plurality of scan lines simultaneously, the echo signals of all simultaneously scanned lines being stored and then rapidly read out during ultrasonic sc... | 01/16/1979 |
| 4099179 | Method and system of electronic image storage and display A method and system of electronic image storage and display wherein the display is viewed on a raster scan TV display and the incoming signal comprises a sequence of scan lines whose line rate is lower than that of the horizontal TV line rate and is an in... | 07/04/1978 |
| 4096514 | Playback circuit for a recorded three-line sequential color television signal In a playback circuit for a three-line sequential color television signal, which includes a memory presenting four outputs providing, respectively, the undelayed sequential signal and the sequential signal delayed by one, two and three horizontal picture ... | 06/20/1978 |
| 4047204 | Variable interlace display Apparatus for utilization in driving a raster-type display, such as is used in the familiar television system for producing a selectable (according to a predetermined group) of raster formats of different raster interlace rates.... | 09/06/1977 |
| 4024490 | Multibeam sidelooking sonar display system The beam signals of a multibeam sidelooking sonar system are initially time compressed in a first, relatively low speed, logic section and thereafter transferred to a relatively higher speed logic section for placement onto a video disc. The signals from ... | 05/17/1977 |
| 3947826 | Scan convertor The disclosed invention provides the method and apparatus for transforming data, such as low time base parallel channel data produced by thermal imaging type systems, for example, into a second format such as high time base single channel data of the type... | 03/30/1976 |
| 3938179 | Comb filter for video processing A composite video signal recorded in a non-standard encoding format is rearranged in a format which can be decoded by standard television circuitry. Simplified circuitry utilizing a relatively inexpensive, narrow band delay line is provided for separating... | 02/10/1976 |
