Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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 |
| 7343291 | Multi-pass variable bitrate media encoding An encoder uses multi-pass VBR control strategies to provide constant or relatively constant quality for VBR output while guaranteeing (within tolerance) either compressed file size or, equivalently, overall average bitrate. The control strategies include various te... | 03/11/2008 |
| 7290057 | Media streaming of web content data Methods for streaming web content data via a computer-readable medium. The web content data comprises one or more media samples. The media samples are encoded in a streaming media format as a web component stream. The web component stream is combined with other comp... | 10/30/2007 |
| 7248302 | Picture signal processing In a picture signal processing method, an analog picture signal (APS1, APS2) is processed (PSP) in dependence on a quality indication (QI1, Q12) relating to the analog picture signal (APS1, APS2) and received together with t... | 07/24/2007 |
| 7050637 | Image coding method and apparatus and image decoding method and apparatus An image coding and decoding technology for digital movie or video that provides for error checking within the digital video files. The digital video is coded in a data stream that includes key frames and correspondence data between key frames as well as additional ... | 05/23/2006 |
| 7031535 | Image processing apparatus capable of interpolating error data This invention provides an image processing apparatus which receives an image signal divided into a plurality of different subband components, detects an error in low-frequency subband component data within the image signal of one picture, and interpolates remaining... | 04/18/2006 |
| 7020828 | Trellis encoder with rate 1/4 and 1/2 for a backward compatible robust encoding ATSC DTV transmission system Robust and existing standard bit streams are mixed in a backward compatible manner for forming enhanced modes for better reception of ATSC DTV signals. This is achieved by an enhanced coding block provided at the input of a conventional ATSC trellis encoder unit. Th... | 03/28/2006 |
| 6999673 | Moving picture decoding method, moving picture decoding apparatus and program recording medium A moving picture decoding apparatus is provided which reduces the deterioration in image quality due to errors by a concealment processing for decoded image data, thereby improving the image quality of decoded images, without causing high deterioration in image qual... | 02/14/2006 |
| 6980599 | Video decoding system and method having post-processing to reduce sharpness prediction drift A video processing system comprising: a decoder having a complexity reduction system; and a post-processing system for processing an output of the decoder, wherein the post-processing system includes a filter for intentionally blurring a set of frames in a group of ... | 12/27/2005 |
| 6950562 | Data processing method The present invention relates to a method of processing data contained in a digital input image. The data processing method comprises a gradient filter step (GF) of values (Y) of the pixels, which permits to detect (THR) a natural contour area (NC) inside the digita... | 09/27/2005 |
| 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 |
| 6900828 | Fade resistant digital transmission and reception system In a digital broadcast communications system, a higher priority component and a lower priority component are broadcast from a transmitter to a receiver. Each of these components generates a main and a supplemental signal, and each supplemental signal is advanced in ... | 05/31/2005 |
| 6873659 | Transmission system with spatial, temporal, and frequential diversity The invention relates to digital signal terrestrial transmission systems operating in accordance with the MPEG2-TS standard and the DVB-T standard. The system comprises: N transmitters (12, 14) or transmission channel... | 03/29/2005 |
| 6721362 | Constrained discrete-cosine-transform coefficients for better error detection in a corrupted MPEG-4 bitstreams Error detection is added to a motion-picture-experts group (MPEG) decoder by checking each 8×8-pixel block for constraints. The constraints are added during compression by adjusting discrete cosine transform (DCT) coefficients in the block to meet a constraint. Whe... | 04/13/2004 |
| 6654500 | MPEG video decoding system and overflow processing method thereof An MPEG video decoding system and an overflow processing method are disclosed. The MPEG video decoding system does not reset the video buffer during the overflow period, which allows a decoding of the data already stored in the video buffer, thereby minim... | 11/25/2003 |
| 6414717 | Picture converting apparatus, picture converting method, learning apparatus, learning method, and record medium A picture reducing circuit 1 reduces a supplied original picture. An upper hierarchical level picture memory 2 stores an input upper hierarchical level picture. A predictive tap obtaining circuit 3 extracts a predictive tap from the upper hierarchical lev... | 07/02/2002 |
| 6404817 | MPEG video decoder having robust error detection and concealment A video decoder is provided with robust error handling and concealment. In one embodiment, the video decoder detects syntactic, semantic, and coding errors in encoded slices of macroblocks. An error handler determines the number of remaining un-decoded ma... | 06/11/2002 |
| 6330365 | Decoding method and apparatus using bitstreams and a hierarchical structure A decoding method includes using a plurality of first bitstreams that are obtained by dividing a main bitstream with a hierarchical structure as inputs, successively arranging the plurality of first bitstreams and arranging selected second bitstreams befo... | 12/11/2001 |
| 6081299 | Methods and systems for encoding real time multimedia data Methods and systems are provided for generating a real time multimedia data stream with accurate time stamps for decoding. Time stamps are provided which compensate for a difference between a video frame rate corresponding to a video frame within the real... | 06/27/2000 |
| 5867230 | System, device, and method for streaming a multimedia file encoded at a variable bitrate System, Device, And Method For Streaming A Multimedia File Encoded at a Variable Bitrate. The data is encoded at a variable bit rate and formed into packets having a server time stamp. The server time stamps are constructed so that the streaming of the pa... | 02/02/1999 |
| 5867231 | Method and apparatus for decoding video signal A method for decoding a video signal in which the decoding operation is completed within a predetermined time irrespective of the presence of an error which is generated on a bit strings. In the case where a bit strings formed by coding a video signal for... | 02/02/1999 |
| 5515437 | Scramble transmission apparatus and signal processing apparatus The occurrence of malfunction on the reproduction side is avoided by preventing a scrambled signal from being coincided with a reserved word in the signal when a scramble process is carried out in order to release a transmission signal to specific users. ... | 05/07/1996 |
| 5384849 | Apparatus and method for encoding/decoding data including the suppression of blocking artifacts A method and apparatus for removing blocking artifacts in an encoder/decoder system. The encoder includes a delay device for delaying original input frame data, a decoder for decoding the compressed data and outputting the restored frame data, and a block... | 01/24/1995 |
| 5285497 | Methods and apparatus for scrambling and unscrambling compressed data streams Methods and apparatus for encoding compressed data streams efficiently, and methods and apparatus for decoding the encrypted data streams efficiently and inexpensively, are disclosed. In an encoder 10', an incoming data stream is fed to a Huffman coding b... | 02/08/1994 |
| 5268961 | Error control apparatus for a digital video signal processing system In a system for coding and decoding a digital television signal, a signal representing residual image information is transformed into plural subband signals representing vertical and horizontal frequencies, and quantized. To mitigate the effects of transm... | 12/07/1993 |
