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| Number | Title | Issue Date |
| 7372481 | Vector waveform correction device A vector waveform correction device corrects a vector waveform displayed on a vector scope. A first color difference signal and a second color difference signal demodulated from a chrominance signal of a composite video signal are input as x and y, and a vector (x, ... | 05/13/2008 |
| 7349009 | Vector waveform correction device A phase shifter (70) for correcting the phase of a sub-carrier signal input into a decoder to a burst signal has a phase shift setting (5), a correction amount setting (9′), a phase shifter (6) and a 90-degree phase shifter (7). ... | 03/25/2008 |
| 7336298 | Video signal level monitoring apparatus A video signal level monitoring apparatus which monitors the level of a video signal, said apparatus comprises means for inputting a first color difference component (Cb) and a second color difference component (Cr) of a component video signal, means for inputting a... | 02/26/2008 |
| 7327384 | Gamut false color display A gamut error false color display uses false coloring on a monochrome image of a video picture being tested. Composite and component gamut error signals are extracted from an input video signal representing the video picture being tested. Such error signals may repr... | 02/05/2008 |
| 7245671 | Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital c... | 07/17/2007 |
| 7239341 | Vector waveform rotation device A vector waveform rotation device (60) for rotating a vector waveform displayed on a vector comprises rotation amount setting means (5′) for holding a rotation amount α, and means (6′) for inputting a first color difference signal (B-Y sign... | 07/03/2007 |
| 7224407 | Color demodulation device, color demodulation method and image display device A color demodualation device having an AD converter, a phase signal generator, a burst data generator and a multiplier. The AD converter produces digital samples of chrominance signal at a frequency four times a color subcarrier frequency, and the phase signal gener... | 05/29/2007 |
| 7180539 | Luminance qualified vector display A luminance qualified vector display device provides a vector display that is gated by a specified luminance range. In one implementation three luminance gates may be used, one for luminance levels above a specified high luminance threshold, a second for luminance l... | 02/20/2007 |
| 7170929 | Digital signal transmission system and method of displaying transmission condition in digital signal transmission system A digital signal transmission system using a digital modulation system comprising a digital signal transmitter having a first digital signal processing unit and a digital signal receiver receiving a digital signal from the transmitter, wherein the digital signal rec... | 01/30/2007 |
| 7136092 | Method and apparatus for testing video chroma quantization A method for testing the chroma performance of a digital rendering integrated circuit includes generating a video test signal where the video test signal has a constant luma amplitude, constant chroma amplitude, and varying chroma phase. The method then continues by... | 11/14/2006 |
| 7071965 | Artistic color gamut display An artistic color gamut display is generated by obtaining maximum and minimum values for an RGB signal. The maximum and minimum values are used as X and Y values for an XY plot. A triangular graticule, or Spearhead display, is generated for the XY plot having a firs... | 07/04/2006 |
| 7009660 | Device and method for automatically discriminating between formats of video signals A device and a method for automatically discriminating formats of video signals input to a monitor and processing the respective signals in accordance with the identified formats are provided. The device automatically identifies whether signals input to the same inp... | 03/07/2006 |
| 6958784 | Video signal processing apparatus using multi-conversion stages A video signal processing apparatus for processing a video signal containing first and second color difference signals so as to adjust colors of an image represented by the video signal is disclosed. The apparatus includes a plurality of gain setting sections for se... | 10/25/2005 |
| 6912247 | Digital signal transmission system and method of displaying transmission condition in digital signal transmission system A digital signal transmission system using a digital modulation system comprising a digital signal transmitter having a first digital signal processing unit and a digital signal receiver receiving a digital signal from the transmitter, wherein the digital signal rec... | 06/28/2005 |
| 6907365 | Context sensitive toolbar An oscilloscope apparatus, comprising a display for displaying a plurality of objects, a toolbar displayed on the display, and a user interface for selecting an object. The display displays one or more functions on the toolbar corresponding to the selected object. | 06/14/2005 |
| 6862029 | Color display system Disclosed is a method and apparatus for controlling color displayed on a color monitor. The method includes, in one embodiment, the steps of: activating a first color scheme on the monitor; responsive to the activating of the first color scheme, measuring a first co... | 03/01/2005 |
| 6493024 | Signal monitoring apparatus A digital video signal monitoring apparatus comprises means (2,4,6) for receiving a digital video signal and extracting therefrom a plurality of digital signals, each of which comprises a plurality of successive digital sample values. The apparatus furthe... | 12/10/2002 |
| 5642161 | Color monitoring apparatus Color monitoring apparatus has similarities to conventional vectorscope but utilizes unique color difference signals which are luminance independent. Linear combinations of ratios between R, G and B differences produce a display which maps color one-to-on... | 06/24/1997 |
| 5589877 | Automatic amplitude control circuit for a vector scope A signal processing circuit for a vector scope adapted to display and measure characteristics of a color video signal on a screen which comprises a variable gain circuit 3, a demodulation circuit 6, timing signal generator 7, amplitude detection circuits ... | 12/31/1996 |
| 5519440 | Composite signal-limit indicator for a component monitor A composite signal-limit indicator for a component monitor converts an input video signal, such a digital 422 signal or a GBR signal, into composite Y and Mag C component signals The composite Y and Mag C component signals are presented on an X-Y display... | 05/21/1996 |
| 5512944 | Phase shifting device for vectorscope A phase shifting device for a vectorscope is provided which enables a vector-displayed waveform to be instantaneously and accurately rotated to an arbitrary or variable predetermined target phase position, with an arbitrary or variable predetermined porti... | 04/30/1996 |
| 5455620 | Automatic generation of vector reference graticules A system for automatic generation of vector reference graticules for a vectorscope display acquires the active video portion of a video signal that includes a color bar test signal. The values for each color difference component at each reference color pl... | 10/03/1995 |
| 5418562 | Method and apparatus for increasing the accuracy of dimensional measurements made with video cameras Video cameras, such as charge coupled device cameras, are used for optically making dimensional measurements of laser beams. Such cameras have drawbacks including baseline offset error, shading error, pixel-to-pixel fixed pattern offsets, and poor signal-... | 05/23/1995 |
| 5175614 | Vectorscope automatic burst positioning Vectorscope automatic burst positioning for properly aligning a vectorscope display uses a microprocessor (22) to control a phase shifter (14) according to the amplitudes of the chrominance components demodulated from an input color video signal during th... | 12/29/1992 |
| 5172229 | Sync vector generator for composite vectorscopes A sync vector generator for a composite vectorscope generates a gate from the horizontal sync pulses of a video input signal as a function of a reference signal selected from either the video input signal or an external reference signal. The gate width is... | 12/15/1992 |
| 5122863 | Method and apparatus for simultaneous display of video signal attributes A test apparatus for video signal produces a two dimensional projection of a three dimensional display of video variables. The variables can be luminance, saturation and hue; luminance, R-Y and B-Y color difference; red, blue and green amplitude; or lumin... | 06/16/1992 |
| 5038098 | Simultaneous display of two unrelated signals A device for simultaneously displaying unrelated signals processes the signals separately prior to inputting them to a multiplexer. Under control of a microprocessor the multiplexer. Under control of a microprocessor the multiplexer switches between the p... | 08/06/1991 |
| 4875089 | Multi-standard vectorscope A multistandard vectorscope providing vector displays of two or more composite video standards in a single vectorscope. The present invention utilizes a DC controlled phase shifter and a demodulator that are not frequency sensitive along with a switchable... | 10/17/1989 |
| 4811083 | Apparatus for displaying the phase and amplitude of a chrominance signal Apparatus for displaying in polar coordinates the relative phase and amplitude of a chrominance signal comprises a display device, such as a CRT display device, having a circuit for adjusting the brightness of the light dot. The apparatus also comprises a... | 03/07/1989 |
| 4740841 | Correlation of video data between two display formats A method for correlating video data between two video display formats uses a multi-function instrument which digitizes the input video data. An operator selects a horizontal line of the video data via a rotary encoder which updates a global variable commo... | 04/26/1988 |
| 4648113 | Method and apparatus for providing a visual indication of a relationship between two signals A visual indication of the relationship between first and second electrical signals, such as the left and right channel signals in a stereophonic audio system, is provided through use of a video vectorscope. The first and second signals are used to modula... | 03/03/1987 |
| 4488168 | Vector scope In a method and a vector scope for measuring distortion of a subcarrier signal causing color aberration of a color television signal, a carrier chrominance signal resulting from a color bar signal transmitted in a transmission system and a reference carri... | 12/11/1984 |
