Quotables
"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| RE40107 | Video/audio transmission system and method The invention is a data pipeline system which synchronizes the display of digitized audio and video data regardless of the speed at which the data was recorded on its linear medium. To do this, the video data is played at a constant speed, synchronized by the audio ... | 02/26/2008 |
| 7333153 | Expanded information capacity for existing communication transmission systems A system for transmitting digital programming includes a program source providing digital information, circuitry for modulating the digital information onto a visual carrier modulated with analog television programming, and a visual transmitter coupled to the modula... | 02/19/2008 |
| 7295765 | Digital image recording and reproducing apparatus having formats corresponding to pixel configurations In a digital image recording/reproducing apparatus of the invention, image data obtained via a charge-coupled-device (CCD) is processed by a processing circuit so as to produce a luminance signal and color-difference signals, which are supplied to corresponding firs... | 11/13/2007 |
| 7199844 | Quadratic nyquist slope filter A television demodulator circuit, for use in a television receiver, generates baseband video and audio outputs from a television signal, such as an intermediate frequency television signal. The I, Q demodulator circuit mixes the television signal with an in-phase (�... | 04/03/2007 |
| 7138858 | Apparatus and methods for output buffer circuitry with constant output power in radio-frequency circuitry A buffer circuitry buffers a radio-frequency (RF) signal. The buffer circuitry includes a complementary pair of switches and a power source. The a complementary pair of switches has an input terminal and output terminal. The input terminal of the complementary pair ... | 11/21/2006 |
| 7102465 | Frequency discrete LC filter bank An inductive (“L”)-capacitive (“C”) filter bank has application for use in a television receiver. The LC filter includes inductors configured in at least one inductive (“L”) bank, and capacitors configured in at least one capacitive (“C”) bank. The i... | 09/05/2006 |
| 7102693 | Data acquisition circuit which changes a range of a reference potential An A/D converter updates its reference potential so that it coincides with an analog potential of a video signal. The A/D converter changes a variable voltage range of the reference potential during the same horizontal synchronizing period based upon a horizontal sy... | 09/05/2006 |
| 7088202 | Methods and apparatus for an improved discrete LC filter A discrete inductive-capacitive (LC) filter selects between at least two inductor banks to tune the LC filter. The filter receives an input signal that includes one or more bands of frequencies. A control signal selects a band of frequencies for processing. A first ... | 08/08/2006 |
| 7085328 | QAM receiver having joint gain, carrier recovery and equalization adaptation system A quadrature amplitude modulation (QAM) receiver digitizes an analog QAM signal representing a transmitted sequence of complex elements to produce a digital waveform sequence representing amplitudes of successive samples of the QAM signal. The QAM receiver employs a... | 08/01/2006 |
| 7061406 | Low power, DC-balanced serial link transmitter A transmitter for a data communication system that comprises a transmission line between first and second integrated circuits. An encoder on the first integrated circuit encodes an input data stream to produce a sequence of codewords, wherein codewords in the sequen... | 06/13/2006 |
| 7058677 | Method and apparatus for selectible quantization in an encoder A method for selectable quantization for use in an encoder for compressing video and/or audio data includes processing that begins by receiving discrete cosine transform data of an encoded signal. The processing continues by obtaining a quantization table. The proce... | 06/06/2006 |
| 7016308 | Digital return path for hybrid fiber/coax network A hybrid fiber/coax network is provided. The network includes a head end with at least one optical distribution node coupled to the head end over at least one fiber optic link. A plurality of coaxial cable links are coupled to each of the at least one optical distri... | 03/21/2006 |
| 7006568 | 3D wavelet based video codec with human perceptual model A video encoding/decoding system based on 3D wavelet decomposition and the human perceptual model is implemented. JND is applied in quantizer design to improve the subjective quality of compressed video. The 3D wavelet decomposition helps to remove spatial and tempo... | 02/28/2006 |
| 6954234 | Digital video data signal processing system and method of processing digital video data signals for display by a DVI-compliant digital video display A system and method allows a high-bandwidth serial or parallel digital video broadcast data signal to be monitored on a low-cost digital display device such as a computer monitor. The system includes means for extracting horizontal and vertical synchronization infor... | 10/11/2005 |
| 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 |
| 6937774 | Apparatus and method for efficiently increasing the spatial resolution of images A method increases the spatial resolution of a source image based on an auxiliary, co-registered image of a higher spatial resolution. Each of the source and auxiliary images includes a plurality of pixels with corresponding spectral intensities and the method inclu... | 08/30/2005 |
| 6925097 | Decoder, decoding method, multiplexer, and multiplexing method A decoder is provided which includes a demultiplexing unit for separating a multiplexed stream into plural streams by a demultiplexing process and a decoding unit for carrying out a decoding process for one of the plural separated streams, wherein the decoder select... | 08/02/2005 |
| 6922454 | Direct conversion radio receiving system using digital signal processing for channel filtering and down conversion to base band A radio receiving system, which receives an input signal in a direct conversion receiving mode through the use of a plurality of cascaded channel filters, each including a complex coefficient filter, to obtain a desired waveform, wherein a center frequency of a prel... | 07/26/2005 |
| 6914637 | Method and system for video and auxiliary data transmission over a serial link A communication system including a transmitter, a receiver, and a serial link, in which encoded data (e.g., video, audio, and optionally also other auxiliary data) are transmitted from the transmitter to the receiver. The serial link can but need not be a TMDS or TM... | 07/05/2005 |
| 6904098 | Linear phase robust carrier recovery for QAM modems In a QAM demodulator including an adaptive equalizer, a method of carrier tracking comprising the following steps is disclosed: (A) sampling a QAM signal received from a transmission channel; (B) recovering a symbol clock function from the sampled QAM signal; (C) ap... | 06/07/2005 |
| 6873368 | Low noise encoding and decoding method An adaptive digital image processor precedes an MPEG2 encoder. The processor receives a high definition video signal intended for broadcast or storage, and adaptively low-pass filters the signal. The signal is subjected to low-pass two-dimensional filtering to elimi... | 03/29/2005 |
| 6847659 | Methods and apparatus for reconfiguring protocol data when reducing multiplexed data streams The present invention provides methods and apparatus for reconfiguring protocol data for a multiplexed data stream which is reduced to carry fewer services for cable-side transmission in a cable television plant or the like. More particularly, the present invention ... | 01/25/2005 |
| 6757434 | Region-of-interest tracking method and device for wavelet-based video coding A method and device for tracking a region-of-interest in a sequence of image frames, wherein the boundary of the target region of a previous frame is projected onto the current frame so that a search area in the current frame can be established. For every pixel in t... | 06/29/2004 |
| 6477185 | Demultiplexing and decoding apparatus for coded audio and video data A demultiplexing and decoding apparatus for coded audio and video data realized with a simple circuit construction and reduced processing load, which processes a packet with higher priority over other packets, prior to the other packets. A plurality of TS... | 11/05/2002 |
| 6072837 | Quantizing apparatus and quantizing method A subtraction device subtracts a predicted value generated by a predicting portion from a digital picture signal supplied through an input terminal. The subtraction device generates a difference signal as an output signal. A quantizing portion detects an ... | 06/06/2000 |
| 6005605 | Television distribution system and method Within a desired service area, multiple transmitters at separately located sites simultaneously broadcast the same multi-channel, multi-program signal. Broadcast waves from the transmitters propagate substantially throughout the service area and overlap i... | 12/21/1999 |
| 5870434 | Apparatus and method for quantizing a digital signal based on quantizing steps including odd-numbered steps A subtraction device subtracts a predicted value generated by a predicting portion from a digital picture signal supplied through an input terminal. The subtraction device generates a difference signal as an output signal. A quantizing portion detects an ... | 02/09/1999 |
| 5859876 | Method and apparatus for improving AM compatible digital broadcast analog fidelity A digital signal transmission system is provided which minimizes the AM signal envelope distortion caused by multiple digitally modulated carriers in the same band as the AM signal. The system transmits an amplitude modulated signal. Digital carriers for ... | 01/12/1999 |
| 5727090 | Method of storing raster image in run lengths havng variable numbers of bytes and medium with raster image thus stored The invention implements a run-length file format with improved space-sav qualities. The file starts with a header in ASCII format and includes information such as the file format, maximum X and Y values, and a color palette. The binary raster data inclu... | 03/10/1998 |
| 5659353 | Television distribution system and method Within a desired service area, multiple transmitters at separately located sites simultaneously broadcast the same multi-channel, multi-program signal. Broadcast waves from the transmitters propagate substantially throughout the service area and overlap i... | 08/19/1997 |
| 5583569 | Video camera having asynchronous digital output including header data A video camera is adapted to provide an asynchronous computer-friendly output signal instead of a standard analog video format. The output signal becomes a digitally-encoded message wherein each video frame becomes a serialized string of digital data dema... | 12/10/1996 |
| 5523795 | Method and apparatus for serial transmission and/or reception of nonsynchronous, multiplexed signals A method and an apparatus capable of transmitting and receiving multiplexed signals as serial data in such a manner that, even in a state where a continuous signal such as an audio digital signal is not in synchronism with another signal such as a video d... | 06/04/1996 |
| 5524025 | Coding for digital transmission Digital signals, such as digitized television signals, are subjected to a source coding step followed by a channel mapping step. The source coding step causes the television signal to be represented by two or more data streams while, in the channel mappin... | 06/04/1996 |
| 5495298 | Apparatus for concealing detected erroneous data in a digital image signal An apparatus for concealing error data of pixel data in a digital image signal. The apparatus includes a deframing circuit for detecting errors every predetermined unit to generate a first error flag in high order bit planes including at least the most si... | 02/27/1996 |
| 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 |
| 5416525 | Method and apparatus for digitally coding and decoding a composite signal, containing baseband and out-of-band signals using relatively few bits and yielding a decoded out-of-band signal having increased quality A composite signal which comprises a video signal situated in the base band and a frequency-modulated audio signal situated outside the base band is coded by an N-bit pulse code modulator or an N-bit noise-shaped pulse code modulator with inadequate quali... | 05/16/1995 |
| 5386239 | Multiple QAM digital television signal decoder In a video signal processing system, a single adaptive passband equalizer is used to process a composite Quadrature Amplitude Modulated (QAM) signal encoded with high priority (HP) and standard priority (SP) components. The equalizer output is phase corre... | 01/31/1995 |
| 5329360 | Multiplexing and demultiplexing image data Image data multiplexing apparatus for multiplexing digital luminance and chrominance data of a representation of an image into multiplexed data blocks of a predetermined length, along with a corresponding demultiplexing apparatus, is described. Each of th... | 07/12/1994 |
| 5329375 | Information recording/reproducing apparatus In the recording apparatus and reproducing apparatus employing variable length coding, a formatting which prevents propagation of error due to transmission route error is realized. The input quantized value is coded in variable length and recorded in a fi... | 07/12/1994 |
| 5323232 | Filter device for decimation and interpolation of chrominance components of a video signal A decimation or interpolation filter is selectively used for decimation or interpolation of pixel data of a chrominance component of a video signal, In general, the chrominance signal and the luminance signal are closely related to each other and their ed... | 06/21/1994 |
