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| Number | Title | Issue Date |
| 7366251 | Transmitter for transmitting a combined clock signal and a digital data signal modulated on a carrier wave A transmitter circuit for transmitting a sine wave modulated with digital data, where the sine wave includes a clock signal, and a receiver circuit for demodulating the transmitted sine wave, where the receiver circuit extracts the clock signal and the digital data ... | 04/29/2008 |
| 7050097 | Method and apparatus for the display of still images from image files An apparatus for displaying digital image files on a standard display device such as a television set is provided in the form of a set-top box. The box includes an integrated circuit and memory buffer for computing an image from a file, a second memory buffer for st... | 05/23/2006 |
| 7034894 | Digital-to-analog conversion multiple-format video encoder A multiple-format video encoder stores values of the sine and cosine functions in a ROM. According to the externally specified video format, an address calculating circuit calculates the addresses at which to access the ROM. In the multiple-format video encoder, a l... | 04/25/2006 |
| 7003500 | Retail point of sale (RPOS) apparatus for internet merchandising The present invention is an apparatus for the money transactions required in the selling of merchandise or media content on the Internet and uses at least one in-person contact with the buyer. A predefined transaction originating at a real place of business authoriz... | 02/21/2006 |
| 6947060 | Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance... | 09/20/2005 |
| 6714260 | Monolithic generation of RF for wireless transmission of video A digital imaging system generates a composite video signal and the carrier frequency of a desired television channel is generated internal to the imager integrated circuit. The carrier frequency is then amplitude modulated with the composite video signal by either ... | 03/30/2004 |
| 5946053 | Image encoder and subcarrier signal generator An image encoder and subcarrier signal generator. The present invention uses a system clock signal to generate a first subcarrier signal and a second subcarrier signal with a phase-delay of 90° behind the first subcarrier signal.... | 08/31/1999 |
| 5907355 | Solid state color image pickup apparatus A solid state color image pickup apparatus easily converts an output from a solid state image sensor to a television signal with a simple structure, thereby facilitating the reduction of the size, weight, power consumption and cost of the image pickup app... | 05/25/1999 |
| 5896179 | System for displaying computer generated images on a television set In a graphics card of a computer, a circuit is provided for displaying graphic presentations generated by the card on an external TV set. A TV adapter controls a horizontal state machine of a CRT controller so as to delay generation of CRT timing signals ... | 04/20/1999 |
| 5475439 | Image processing apparatus with chrominance processing and luminance delay An image processing apparatus for performing digital signal processing on an input color video signal is provided with a delay circuit for cancelling a time difference which occurs between a luminance signal component and a chrominance signal component of... | 12/12/1995 |
| 5446500 | Noise reducing apparatus and methods for television receivers A high-performance television receiver synchronously detects the picture IF signal. A synchronous impulse noise in the IF signal generates either positive-going noise or negative-going noise in the video signal supplied from a synchronous video detector, ... | 08/29/1995 |
| 5430487 | Method and apparatus for improving temporal video signal processing using motion vectors transmitted with the video signal A system for improving motion-sensitive processing in a television receiver generates motion vectors for video images in a studio environment, encodes the motion vectors and then combines the encoded motion vectors with the video signal for transmission. ... | 07/04/1995 |
| 5365275 | Method and apparatus for generating PAL video signal by digital processing Disclosed is a method and apparatus for highly stably and accurately generating a PAL video signal by digital processing. The method and apparatus comprise generating a basic clock having a frequency which is 11×N times (N: an integer) as high as a horiz... | 11/15/1994 |
| 5333014 | Non-sharp cut filters for assembling and splitting in Weston Clean PAL An assembler and splitter of a Weston PAL (W-PAL) video signal has filter functions F1, F2 at the assembler for the luminance and chrominance components and corresponding functions F3, F4 at the splitter. The tr... | 07/26/1994 |
| 5305095 | Method and circuit for encoding color television signal An encoding apparatus and method for encoding color television signals which improves the quality of a display image by selecting the most effective passband of a motion and pattern adaptive 3-D filter according to the shape of a pattern or the still and ... | 04/19/1994 |
| 5301015 | NTSC and PAL compatible digital encoder A digital encoder for use in both NTSC and PAL systems includes a demultiplexer for separating a time-division color difference signal R-Y/B-Y into color difference signals R-Y and B-Y. The separated color difference signals R-Y and B-Y are converted by a... | 04/05/1994 |
| 5278637 | Apparatus and a method for quadrature-phase encoding and transmitting a digital signal in a video signal A system for encoding digital data into a video signal first encodes the digital data into in-phase and quadrature-phase component signals, using a 16 quadrature amplitude modulation (16 QAM) technique. The in-phase and quadrature-phase signals are then u... | 01/11/1994 |
| 5251042 | Component video signal transmitting apparatus A component video signal transmitting apparatus for suppressing any adverse affects caused by noises which are mixed with FM signals which are transmitted after component video signals are frequency modulated. After the color difference signals in the com... | 10/05/1993 |
| 5109271 | Television system for digital transmission of picture signals In a television transmission system a digital luminance signal Dy and two digital color difference signals DCHR(1) and DCHR(2) are applied to a distribution circuit 3 at the transmitter end, which digital color difference signals are applied thereto possi... | 04/28/1992 |
| 5103296 | Color television system having adaptive filters in the transmitter encoder and in the receiver decoder A color television system wherein the transmitter and receiver each include at least one adaptive filter for minimizing crosstalk between the frequency interleaved luminance (Y) and chrominance (C) components of a received video signal due to vertical cha... | 04/07/1992 |
| 5081521 | NTSC color television system with improved chroma bandwidth and chroma ringing reduction A chroma modulation method for extending the bandwidth of baseband plural chroma components of an NTSC format quadrature modulated chroma subcarrier color television signal, such as I and Q components, with reduced susceptibility to ringing and with compa... | 01/14/1992 |
| 5067009 | Apparatus for recording and/or reproducing a component video signal having a luminance signal of a wide frequency band and a chroma signal in a band below the high end of the luminance signal band and within the latter In an apparatus for recording and/or reproducing a component video signal having a luminance signal of a wide frequency band so as to be reproducible for obtaining a picture of high resolution and a chroma signal in a chroma band included in the frequency... | 11/19/1991 |
| 5053857 | Television signals In order to achieve increased resolution and to minimise cross-colour and cross-luminance effects in a PAL, NTSC or SECAM encoded signal, a high definition source (20) is pre-filtered at a higher line rate according to one of at least two methods (22, 24,... | 10/01/1991 |
| 5029003 | Apparatus for incorporating digital signals with a standard TV signal A system for transmitting digital sound signals in a standard broadcast video signal includes apparatus for removing video signals from a portion of the vestigial sideband of the broadcast video signal and inserting coded digital sound signals therein.... | 07/02/1991 |
| 4949166 | Apparatus for combining and separating constituent components of a video signal The luminance component of a video signal is processed to produce a luminance component with groups of mutually exclusive spatially correlated image pixels of identical value within each group. In one embodiment each group comprises vertically averaged pi... | 08/14/1990 |
| 4943849 | Television transmission system having improved separation of audio and video spectra Improved separation of audio and video spectra carried upon spectrally separated audio and video carriers within a television transmission channel leading to a television receiver is realized in a method which includes the transmission steps of: obtaining... | 07/24/1990 |
| 4943847 | Extended definition television Extended horizontal definition is provided in a television system in which the wideband and narrowband chrominance components of a video signal are modulated for transmission by a subcarrier. The modulated wideband I chrominance component is filtered over... | 07/24/1990 |
| 4922329 | Apparatus for coding a digital component video signal Apparatus for coding a digital component video signal, comprising first means for modulating a first carrier signal with one of the component chrominance signals, the first carrier signal having a four-field sequence such that the phase of the first carri... | 05/01/1990 |
| 4879606 | EDTV recording apparatus Extended definition television (EDTV) signals including a compatible composite wideband signal and a separate helper or extended definition signal are combined, for example, for recording purposes, using frequency multiplexing techniques. The helper signa... | 11/07/1989 |
| 4870480 | Subnyquist demodulator as for a television receiver An asymmetrical sideband modulated (ASM) signal, such as an RF NTSC television signal is demodulated into in-phase and quadrature phase components, each of which are sampled at a sampling rate that is less than the Nyquist rate for the components. The sig... | 09/26/1989 |
| 4870481 | Color television signal transmission system and improved-definition receiver for use in the system A color television signal transmission system in which, at the transmitter end the frequency bandwidths of the brightness and chrominance signals are extended by two to three times as compared with the NTSC system to improve horizontal resolution and colo... | 09/26/1989 |
| 4829367 | Apparatus and method for encoding and decoding a NTSC color video signal The present disclosure describes a color video signal encoding system for generating a NTSC color image composite signal for a television receiver. A luminance signal Y and two chrominance signals I and Q are modulated on a color subcarrier having a frequ... | 05/09/1989 |
| 4709256 | Wide screen composite video signal encoder and standard aspect ratio decoder having barst and subcarrier components of different frequencies A wide screen video signal is encoded for transmission as a composite signal having standard line and field rates and the standard frequency color burst. The signal includes chrominance components modulated on a color subcarrier frequency greater than the... | 11/24/1987 |
| 4701783 | Technique for encoding and decoding video with improved separation of chrominance and luminance Apparatus and method are disclosed for encoding and decoding a video signal. The standard resolution chrominance and the detail component of standard resolution luminance are encoded and transmitted in a way which allows them to be separated at the receiv... | 10/20/1987 |
| 4695899 | Recording and reproducing system employing balanced modulation for color video signal A color video signal recording system comprises means for producing a quadrature two-phase balanced-modulated color signal by subjecting a subcarrier to quadrature two-phase balanced modulation by two color signals, means for producing a demodulation-purp... | 09/22/1987 |
| 4683490 | Video signal processing apparatus The present application discloses a video signal processing apparatus for minimizing cross-color and cross-luminance interference in a composite video signal. A first filter is coupled to a color difference signal input terminal and generates a signal occ... | 07/28/1987 |
| 4677464 | Video signal generating apparatus with color sequencing A video signal generating apparatus having a video camera which has a higher scanning speed than that of a standard video camera for generating a prior standard television video signal is disclosed which includes a circuit for dividing the video signal in... | 06/30/1987 |
| 4675721 | Method for coded transmission of color television signals In a method for transmission of color television signals, at least two color information containing signals are coded using code elements comprised of a half period or a full period of a sine wave, the sequence of code elements forming at least one essent... | 06/23/1987 |
| 4661840 | NTSC color television transmission An improved color television transmission compatible with NTSC standards produces a controlled horizontal scan rate at about 15,734 Hz with 227.5 cycles of color subcarrier per line, and a controlled vertical scan rate at about 59.940 Hz to produce frames... | 04/28/1987 |
| 4660074 | NTSC color television transmission without chroma crawl An improved color television transmission compatible with NTSC standards produces a controlled horizontal scan rate at about 15,768 Hz with 227 cycles of color subcarrier per line, and a controlled horizontal scan rate at about 60.070 Hz to produce frames... | 04/21/1987 |
