Quotables
"What, sir, would you make a ship sail against the wind and currents by lighting a bonfire under her deck? I pray you, excuse me, I have not the time to listen to such nonsense."
Napoleon Bonaparte ; When told of the Robert Fulton steamboat
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 |
| 5333013 | Image encoding apparatus In an image encoding apparatus, conversion data obtained by converting image information onto a frequency region, and corresponding to several frames, are parallelly output using a one-frame-period delay circuit. The parallelly output conversion data are ... | 07/26/1994 |
| 5313298 | Video companding method and system A companding technique takes advantage of spatial masking in order to avoid problems from noise and/or distortion introduced when storing or transmitting video signals. A forward companding or encoding part of the technique divides a video frame into sepa... | 05/17/1994 |
| 5294983 | Field synchronization system with write/read pointer control A field synchronization system for asynchronous video signals, comprises a video display synchronized with a first video signal having a first line rate component and a first field rate component. A second video signal having a second line rate component ... | 03/15/1994 |
| 5272529 | Adaptive hierarchical subband vector quantization encoder A method system for data reduction of digital video signals based on vector quantization of vectors formed from coefficients of a discrete cosine transform of pixel blocks. The coefficients are grouped into subbands and both scalar and vector quantization... | 12/21/1993 |
| 5251029 | Image encoding apparatus In an image encoding apparatus, conversion data obtained by converting image information onto a frequency region, and corresponding to several frames, are parallelly output using a one-frame-period delay circuit. The parallelly output conversion data are ... | 10/05/1993 |
| 5249053 | Filmless digital camera with selective image compression In a filmless digital camera, each image is individually evaluated and the compression applied in such manner as to retain maximum quality while fitting the data into the pre-assigned memory. For example, such a camera may have a stated image storage capa... | 09/28/1993 |
| 5231485 | Method and apparatus for transforming between fixed-rate vector quantized data and variable rate vector quantized data A method and apparatus is disclosed wherein fixed rate vector quantized data is transmitted from a first location to a second location via a first medium. The fixed rate vector quantized data is received at the second location and transformed to variable ... | 07/27/1993 |
| 5204899 | Vector quantization method employing mirrored input vectors to search codebook A vector quantization me employs mirrored input vectors to increase the reproduction quality of transmitted vector quantized data. A codevector is selected from a vector quantization codebook for each possible orientation of an input vector. The codevecto... | 04/20/1993 |
| 5146324 | Data compression using a feedforward quantization estimator An image data compression technique is described which utilizes calculating means and a selected series of bit calculating stages having delays, to estimate one or more quantization parameters for such data. The estimation process preferably is iterated a... | 09/08/1992 |
| 5144423 | HDTV encoder with forward estimation and constant rate motion vectors A motion compensated encoder where motion vectors are selected based on the prediction error generated in localized areas of the encoded image and based on an available bit budget. The motion vectors are created by dividing the image into blocks of two si... | 09/01/1992 |
| 5144424 | Apparatus for video data quantization control Apparatus for quantizing compressed viedo data arranged in macroblocks calculates a quantizing parameter independently for each macroblock. The apparatus determines the relative coding complexity of respective macroblocks, and then determines which of the... | 09/01/1992 |
| 5089888 | Moving-image signal encoding apparatus with variably selected quanitization step size A moving-image signal encoding apparatus includes a transmission buffer memory. A first quantization step size for a normal block other than a refreshed block is determined on the basis of an occupied capacity of the buffer memory. A second quantization s... | 02/18/1992 |
| 5089889 | Apparatus for inter-frame predictive encoding of video signal An inter-frame predictive encoding apparatus which derives a prediction error signal representing successive frames of a video signal based on differences between pixel data of each frame and pixel data of at least one other frame, and executes intra-fram... | 02/18/1992 |
| 5079631 | Device for encoding digital video signals including means for classifying the video signals into distinct families prior to normalization and quantization Device for encoding digital video signals which are representative of the luminance or the chrominance of a given number of pixels of a picture divided into blocks, including respective circuits for correlation reduction, normalization, quantization, enco... | 01/07/1992 |
| 5073821 | Orthogonal transform coding apparatus for reducing the amount of coded signals to be processed and transmitted An orthogonal transform coding device assembles sample values of the input signals and forms a large block. The large block is divided into a plurality of small blocks and the sample values are subjected to the orthogonal transform coding for every small ... | 12/17/1991 |
| 5073820 | Image data coding apparatus and coding method An image data coding apparatus performs first and second coding processes. A controller outputs first and second control signals. An orthogonal transform circuit performs orthogonal transform on image data of one screen and generates an transformed output... | 12/17/1991 |
| 5072295 | Adaptive quantization coder/decoder with limiter circuitry An adaptive quantization coder/decoder having a limiter in a quantization coding module so that a reconstruction value of a quantization level is not in excess of a predetermined allowable range, or providing a limiter in a local quantization decoding mod... | 12/10/1991 |
| 5043809 | Encoding apparatus The present invention relates to an encoding apparatus for digitizing and encoding an input image signal, the input image signal being sequentially sampled to sequentially form sample signals at respective sample points. The encoding data which respective... | 08/27/1991 |
| 4972260 | Apparatus for coding a moving-picture signal An apparatus for coding a moving-picture signal comprises a first memory temporarily memorizing an input picture signal of one frame. A block of the picture signal, which corresponds to a central portion of the frame, is firstly read out from the first me... | 11/20/1990 |
| 4953019 | Image signal encoding apparatus An image signal encoding apparatus for encoding an image signal in which image of one picture plane consisting of a plurality of pixel data are divided into a plurality of blocks each consisting of a predetermined number of pixel data. For each of the blo... | 08/28/1990 |
| 4939515 | Digital signal encoding and decoding apparatus Digital data is conveyed along with the analog signal by selectively quantizing the analog signal in response to the level of each of the digital bits to be sent. By determining which quantization function was used, a decoder may recover the embedded digi... | 07/03/1990 |
| 4816914 | Method and apparatus for efficiently encoding and decoding image sequences A method and apparatus, for encoding transform coefficient data representing an error or a motion description of each of a plurality of blocks in one image frame of a timed sequence of image frames, identify those blocks for which data will be transmitted... | 03/28/1989 |
| 4746978 | Image signal quantizing method and apparatus In a method of and apparatus for quantizing image signals, an image is divided into a plurality of minute unit regions in the course of quantization of image signals. The image signals in the respective minute unit regions are quantized by applying a plur... | 05/24/1988 |
| 4713776 | System for simultaneously coding and decoding a plurality of signals In a multi-channel system, a transmitting encoder includes an adaptive quantizer for each channel, an adaptive bit-allocator operating common to all channels using an update algorithm, and a multiplexer which rearrange signals responsive to bit-allocation... | 12/15/1987 |
| 4698689 | Progressive image transmission System and method of progressively transmitting and reconstructing an image in which an approximate image is reconstructed based upon partial information and details are added as additional information becomes available. The image is divided into an array... | 10/06/1987 |
| 4694336 | Digital data transmission method A method for transmitting digital video signals wherein spectral values are sorted according to magnitude and leading zeros are suppressed. In this way, the average word per pixel length can be reduced to about 1 bit, with image quality remaining acceptab... | 09/15/1987 |
| 4660078 | Coder-decoder for transmission and/or reception of television pictures via digital low-speed channel Coder-decoder of television pictures for transmission and/or reception via digital low-speed channel. In transmission, it first carries out the bidimensional transform of digital sample blocks of the television signal and then a dichotomic quantization th... | 04/21/1987 |
| 4447803 | Offset digital dither generator A digital dither generator is described which produces a series of discrete analog values which remain constant for each repetition of a signal being digitized. These analog values are summed with the analog input value being digitized. The dither states ... | 05/08/1984 |
| 4334237 | Adaptive amplitude averaging for weighting quantizing noise An apparatus reduces quantizing noise by averaging picture information when only low frequency information is present. Thus, high frequency detail is not lost. This is determined by looking at proximate samples to see if their amplitudes are within a sele... | 06/08/1982 |
