Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7323676 | Color photosensor with color filters and subtraction unit The invention relates to a color photosensor for sensing the color contents of incident light. In order to provide a color photosensor which is cheap to produce and which allows the control of light in as well intensity as color a color photosensor is proposed compr... | 01/29/2008 |
| 7227587 | System and method for three dimensional comb filtering A system and method for determining whether to process a signal using three-dimensional comb filtering. Various aspects of the present invention may comprise method steps and system components that generate an inter-frame chroma signal. Various aspects may generate ... | 06/05/2007 |
| 7224406 | Digital signal processing system and method applied for chroma transition A digital signal processing system and method applied for chroma transition, wherein the method has the acts of: performing a difference process on an original chroma signal C to obtain a first difference signal C′; calculating an absolute value |C′| of the firs... | 05/29/2007 |
| 7151576 | Method and apparatus for modulating video signals A luminance component of a video signal is modulated in a first frequency band. A first chrominance component of the video signal is modulated in a second frequency band and is mixed with an audio component. A second chrominance component of the video signal is modu... | 12/19/2006 |
| 7145605 | Synchronization of chroma and luma using handshaking An apparatus for synchronizing chroma and luma data includes a first handshake block for luma data, a second handshake block for chroma data, and a means for providing a handshake signal to the first block and to the second block based at least in part on a determin... | 12/05/2006 |
| 7136112 | Method and apparatus for modulating video signals A luminance component of a video signal is modulated in a first frequency band. A first chrominance component of the video signal is modulated in a second frequency band and is mixed with an audio component. A second chrominance component of the video signal is modu... | 11/14/2006 |
| 7061456 | Image display method and image display apparatus A display method can achieve both a substantially high definition image display and high speed dynamic image display. The image displaying method of an image displaying apparatus having a display portion consisting of a plurality of pixels takes each of a predetermi... | 06/13/2006 |
| 6956622 | Method and apparatus for modulating video signals A luminance component of a video signal is modulated in a first frequency band. A chrominance component of the video signal is modulated in a second frequency band. The modulated luminance component and the modulated chrominance component are then transmitted across... | 10/18/2005 |
| 6937294 | Multiplexed video signal interface signal, system and method A multiplexed video signal interface in accordance with the present invention provides a multiplexed component video signal which includes component video signals with OSD data and user-controllable contrast and video gain, along with the ability to individually con... | 08/30/2005 |
| 6888579 | Method and system for tint control for component video signals A method and system are provided for controlling tint of component video signals. The system includes a first input for receiving a first component video signal; a second input for receiving a second component video signal; circuitry including a first differential a... | 05/03/2005 |
| 6888578 | Method and system for cross-luminance reduction in multi-standard television decoders A method and system for correcting luma data and chroma data from a composite signal for a plurality of lines are disclosed. The method and system include correlating line data of the composite signal from a portion of the plurality of lines to provide a plurality o... | 05/03/2005 |
| 6496227 | System with chrominance delay lines A system with chrominance delay lines has a first sampled channel including at least one smoothing filter, and has a second unsampled channel. A continuous bypass filter is placed in the second channel to balance the pulse response from these two channels... | 12/17/2002 |
| 6480241 | S-video signal loss compensation processing apparatus and method In an S-video signal processor, the luminance signal is amplified and adjusted over selected frequency ranges using a parallel signal for shaping the S-video signal response and permitting the S-video signal to be transmitted over exceptionally long trans... | 11/12/2002 |
| 6411340 | Chrominance signal processing apparatus in video signal processing system A chrominance signal processing apparatus in a video signal processing system which has a simple configuration capable of achieving chrominance signal control and RGB transform functions using a single circuit. The chrominance signal processing apparatus ... | 06/25/2002 |
| 6400412 | Video signal processing apparatus with time adjustment of digital chrominance signal A video signal processing apparatus having first and second analog/digital converters for converting imputted analog luminance and chrominance component signals into digital luminance and chrominance component signal. Frequency band limiting filters, disp... | 06/04/2002 |
| 6271881 | Color image pickup apparatus for progressive scanning video signal A color image pickup apparatus includes a photo-to-electric conversion section subjected to progressive scanning. A first delay circuit defers an output signal of the photo-to-electric conversion section. A first adder combines the output signal of the ph... | 08/07/2001 |
| 6249323 | White balance control In a white balance control, correction signals are added to input chrominance signals (Uin, Vin) to obtain output chrominance signals (Uout, Vout). Chrominance sum signals are derived from the input and output chrominance signals (Uin, Vin ; Uout, Vout) a... | 06/19/2001 |
| 6172716 | Video processing circuit Improved circuitry for adjusting the video gain, black level, chroma gain and burst phase of a video signal includes composite to Y/C splitter, luminance processing section, sync separator and chroma processor. Unity and split mode selection is provided. ... | 01/09/2001 |
| 6160593 | Image signal processing apparatus An image signal processor generates color difference output signals from color component signals representative of image data. The image signal processor includes multiple color calculators that generate multiple sets of primary color signals from the col... | 12/12/2000 |
| 6028647 | Automatic gain control circuit using PIN diode capable of improving noise figure while improving frequency band characteristic and bidirectional CATV receiver including such circuit An input high frequency signal passes through a PIN diode having a variable high frequency resistance and is output from an AGC circuit. The PIN diode is connected so as to be biased forward between an AGC signal level and a fixed voltage level (such as g... | 02/22/2000 |
| 5844629 | Digital-to-analog video encoder with novel equalization A digital-to-analog video encoder method and apparatus having unique equalization are disclosed. The encoder converts digital video signals into one or more analog video formats using one or more digital-to-analog converters. Equalization is provided to c... | 12/01/1998 |
| 5812213 | Video signal processing method and apparatus employing luminance and chroma allowances for controlling the chroma level A video signal processing apparatus for separating a video input into a luminance signal and a chroma signal which are sent respectively for individualized special effect processing. Special effect signals are fed to a control unit. The levels of a lumina... | 09/22/1998 |
| 5784126 | S-video signal loss compensation processing apparatus and method For an S-video signal, providing luminance and chrominance, luminance is amplified and adjusted over selected frequency ranges for shaping the S-video signal response for permitting the S-video signal to be transmitted over exceptionally long transmission... | 07/21/1998 |
| 5710545 | Display providing reversible contrasting indicia A display (100) provides reversible contrasting indicia (112, 114) in order to accommodate an increased number of easily distinguishable indicia on the display. The display provides a first contrast mode (200) in which one set of indicia (112) become visu... | 01/20/1998 |
| 5657094 | Video signal processing method and apparatus employing luminance and chroma estimates A video signal processing apparatus for separating a video input into a luminance signal and a chroma signal which are sent respectively for individualized special effect processing. Special effect signals are fed to a control unit. The levels of a lumina... | 08/12/1997 |
| 5638138 | Method for electronic image dynamic range and contrast modification A dynamic range and contrast modification method for electronic images, and digital and analogue implementations are disclosed. Dynamic range changes are accomplished by making linear and nonlinear modifications to the low frequency component. Contrast ch... | 06/10/1997 |
| 5555031 | Adaptive video signal compression In a video signal processing circuit, an adaptive signal compression is realized by correcting the color saturation by multiplication of color difference signals (R-Y, G-Y) by a same correction factor in such a way that color signal values (R, G, B) remai... | 09/10/1996 |
| 5552826 | Digital video camera with external chrominance signal digitized at subcarrier frequency multiple In order to achieve a digital video camera apparatus which decreases the number of components and facilitates connection with a digital VTR, a luminance signal Y and a color signal C input from external input terminals (110, 118) are converted into digita... | 09/03/1996 |
| 5550597 | Signal processing method and signal processing device When an input component image signal is inputted in a signal processing step, a high-frequency signal emphasis processing like HPF is performed with respect to a luminance signal and a processing like LPF with replenishment of the low-midrange frequency s... | 08/27/1996 |
| 5532829 | Automatic color control circuit having a control signal storing capacitor A control circuit includes: a capacitor for normal reproduction which stores an output of a reproduction color burst level detection for automatic color signal level control in a color signal processing circuit at the time of normal reproduction in a vide... | 07/02/1996 |
| 5502508 | Gradation compensating apparatus for a video signal A gradation compensating apparatus comprises a skin color detecting circuit for detecting a skin color signal from an inputted color difference signal, a compensation amount controlling circuit for controlling the signal level by the skin color detecting ... | 03/26/1996 |
| 5500739 | Frequency-multiplexing FM luma signal with color and 2nd under signals having overlapping frequency spectra A frequency-multiplexed video signal is generated in which a color-under signal and a second under signal are linearly combined with at least partially overlapping frequency spectra to form a composite under signal for an FM luma signal. The frequency-mul... | 03/19/1996 |
| 5500687 | Chrominance signal separator using chrominance signal correlation A chrominance signal can be separated from a composite color television signal without misdetection in correlation detection even when the chrominance signal level is small by calculating vertical correlation values, comparing them with the threshold valu... | 03/19/1996 |
| 5500686 | Motion adaptive luminance signal/chrominance signal separation filter A filter for motion adaptive Y/C separation, which is capable of obtaining image of high resolution and little picture quality degradation in the case where an image is switched from static one to motion one or vice-versa, is provided with a filter for ex... | 03/19/1996 |
| 5486929 | Time division multiplexed video recording and playback system A system and method for recording video signals onto analog magnetic tape, and for the playback of those recorded signals. Such a system includes a digital luminance signal generator, a first digital chrominance signal, and a second digital chrominance si... | 01/23/1996 |
| 5412481 | Time-base correction in a video recording/playback system A video recording/playback system includes in its recording electronics time-base correctors both for luma signal and for color-under signal, the time-base corrector for luma signal being used to facilitate comb filtering and the time-base corrector for c... | 05/02/1995 |
| 5404180 | Waveform shaping method, waveform shaping apparatus and apparatus for correcting contour of carrier chrominance signal A waveform shaping apparatus in which no unrequired waveform shaping operation is performed even if its sensitivity is enhanced is provided. A signal (A) to be shaped in waveform is delayed by delay circuits (1 and 2) to produce signals (B and C). The sig... | 04/04/1995 |
| 5394197 | Low-band conversion chrominance signal processing apparatus and method therefor A chrominance signal processing apparatus, where a chrominance subcarrier and a low-band converting chrominance subcarder are formed, uses a common oscillating signal to form the low-band converting chrominance subcarrier. The low-band converting chromina... | 02/28/1995 |
| 5373326 | Chrominance signal processing circuit for a chroma-signal noise reducer A signal from an input terminal (1) is supplied to a video signal processing circuit (2) which derives a carrier chrominance signal. The carrier chrominance signal is supplied through a low-pass filter (3) to an A/D converter circuit (4). A signal convert... | 12/13/1994 |
| 5335069 | Signal processing system having vertical/horizontal contour compensation and frequency bandwidth extension functions A signal processing system is disclosed in which the image resolution is improved by extending the horizontal frequency bands of separated luminance and chrominance signals and compensating the contour of an input image signal, the frequency band of the i... | 08/02/1994 |
