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| Number | Title | Issue Date |
| 7397933 | Collusion resistant desynchronization for digital video fingerprinting Systems and methods are described that desynchronize a video to be protected, thereby creating one or more digitally fingerprinted videos. In one implementation, a video to be protected is temporally desynchronized and spatially desynchronized. A fingerprinted copy ... | 07/08/2008 |
| 7365801 | Apparatus and method for processing signal A motion vector detection portion detects a motion vector based on an input image signal and an image signal of previous field that is one field before the input signal. A motion compensation portion performs motion compensation on the image signal of previous field... | 04/29/2008 |
| 7298425 | Method for assisting video compression in a computer system One embodiment of the present invention provides a method that facilitates compression of video data in a computer system by performing the time-consuming task of computing the difference between successive frames of video data independently from the central process... | 11/20/2007 |
| 7295608 | System and method for communicating media signals A media streaming system for streaming media signals is provided. The media streaming system takes a library of separate and distinct CODECs that are provided as a searchable CODEC library and used in determining specific characteristics in the media signal to ident... | 11/13/2007 |
| 7200669 | Method and system for delivering large amounts of data with interactivity in an on-demand system A method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive requested ... | 04/03/2007 |
| 7197156 | Method and apparatus for embedding auxiliary information within original data The present invention relates generally to embedding and/or encoding auxiliary information within original data. For example, in one embodiment, a method of embedding auxiliary information in data is provided. The auxiliary information is not lost with compression o... | 03/27/2007 |
| 7174384 | Method for delivering large amounts of data with interactivity in an on-demand system A method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive requested ... | 02/06/2007 |
| 7076103 | Method, apparatus, and program for image data compression When image data are compressed, a degree of image quality degradation can be recognized. At the time of compressing the image data, compression information is added as tag information in a file header of the image data. In this manner, by referring to the compressio... | 07/11/2006 |
| 7057645 | Camera system that compensates low luminance by composing multiple object images In a digital camera using an image pickup device such as CCD, a high resolution and properly exposed image is obtained by composition a plurality of image data of the same object taken by a plurality of image pickup operation when a luminance of the object is lower.... | 06/06/2006 |
| 6973126 | Video coding apparatus according to a feature of a video picture A variance between sequential video pictures is extracted, and then, a GOP boundary position is decided based on inter-frame variance information. Furthermore, simple motion estimation is carried out with respect to video pictures inside one GOP. If a motion variati... | 12/06/2005 |
| 6970508 | Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks It is possible to produce a decoded image with a high image quality from data of the lowermost hierarchy obtained during hierarchical coding operation. An image of a first hierarchy equal to an original image is successively thinned in thinning units so that an imag... | 11/29/2005 |
| 6968005 | Video coding A method of encoding a video signal representing a sequence of pictures, the method employing both non-temporal prediction and temporal prediction, wherein the method comprises, for each picture that forms a reference picture for the temporal prediction of another p... | 11/22/2005 |
| 6959044 | Dynamic GOP system and method for digital video encoding This invention discloses an intra-frame complexity based dynamic GOP system and method for the encoding of MPEG-2 video streams. The present invention may be used as a rate control tool to improve video quality. The selective insertion of low complexity I frames in ... | 10/25/2005 |
| 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 |
| 6937657 | Motion video signal encoder and encoding method A motion video signal encoder maximizes image quality without exceeding transmission bandwidth available to carry the encoded motion video signal by comparing encoded frames of the motion video signal to a desired size of frame. If the size of encoded frames differ ... | 08/30/2005 |
| 6912253 | Method and apparatus for transcoding coded video image data A transcoding apparatus converts first coded data obtained from a plurality of frames forming a video image by means of a coding algorithms including an interframe prediction coding algorithm with motion compensation into second coded data having a different structu... | 06/28/2005 |
| 6870883 | Parallel encoding and decoding processor system and method Encoding and decoding systems for MPEG encoding and decoding at a high speed using a parallel processing system, wherein macroblocks to be processed are designated for first to third processors which are made to carry out all processings of encoding, variable length... | 03/22/2005 |
| 6847686 | Video encoding device Video encoding device including a video input processor, for receiving said video signal, a global controller, for controlling the global operation of the video encoding device, a motion estimation processor, a digital signal processor and a bit-stream processor, wh... | 01/25/2005 |
| 6798921 | Method for image designating and modifying process Images in a plurality of related images are processed such that a specific region of the image in the first frame is designated and a specific image in the specific region is modified while at the same time the information about the image characteristic quantity of ... | 09/28/2004 |
| 6697429 | Motion video image transmission system using frame-to-frame comparison processing A system transmitting a motion video image is disclosed which is governed by computer programs that reduce the transmission of all frames but the first of a motion video frame sequence to the transmission of comparison data between each two successive fra... | 02/24/2004 |
| 6625215 | Methods and apparatus for context-based inter/intra coding mode selection A technique is provided for use in a video processing system for selecting between an inter-frame coding mode and an intra-frame coding mode when processing a current portion of a video sequence. The technique includes identifying previously reconstructed... | 09/23/2003 |
| 6499060 | Media coding for loss recovery with remotely predicted data units An improved loss recovery method for coding streaming media classifies each data unit in the media stream as an independent data unit (I unit), a remotely predicted unit (R unit) or a predicted data unit (P unit). Each of these units is organized into ind... | 12/24/2002 |
| 6373960 | Embedding watermarks into compressed video data A for method watermarking a compressed video bitstream selects for modification numerous sites within an MPEG compressed video bitstream, each of which sites includes a DCT coefficient which is apt for modification. Watermarking sites are preferably locat... | 04/16/2002 |
| 6285791 | Transmission method for video or moving pictures by compressing block differences A method is disclosed for transmitting video images over a data communication network, in which method the video image is encoded at the sending end, transmitted, and decoded at the receiving end. The first frame is compressed and transmitted to the recei... | 09/04/2001 |
| 6233017 | Multimedia compression system with adaptive block sizes A multimedia compression system for generating frame rate scalable data in the case of video, and, more generally, universally scalable data. Universally scalable data is scalable across all of the relevant characteristics of the data. In the case of vide... | 05/15/2001 |
| 6137912 | Method of multichannel data compression A method for compressing multiple channels of data using an MPEG-compatible motion estimation technique. The method determines the differences between frames within each channel and among the channels and encodes those differences. To facilitate compressi... | 10/24/2000 |
| 5963258 | Image signal coding system An adaptive blocking coding system selects an effective blocking of an input image signal to be encoded in accordance with the correlation between fields, even if motion is detected between the fields. The blocking patterns include an individual field blo... | 10/05/1999 |
| 5949489 | Image signal coding system An adaptive blocking coding system selects an effective blocking of an input image signal to be encoded in accordance with the correlation between fields, even if motion is detected between the fields. The blocking patterns include an individual field blo... | 09/07/1999 |
| 5867220 | Image signal coding system An adaptive blocking coding system selects an effective blocking of an input image signal to be encoded in accordance with the correlation between fields, even if motion is detected between the fields. The blocking patterns include an individual field blo... | 02/02/1999 |
| 5819048 | Image data processing apparatus transmitting data in accordance with a reception rate Image data processing apparatus transmitting data in according with a reception rate includes a receiver for receiving information data transmitted from at least one external terminal, and calculating circuitry for calculating a reception rate of the info... | 10/06/1998 |
| 5719628 | Video signal coding method and apparatus An efficient coding system for interlaced video sequences with forced refreshing capabilities. An input picture of is divided into two fields, a first and a second field. Certain lines or portions of lines in each respective field are designated for force... | 02/17/1998 |
| 5715006 | apparatus for and method of motion compensation with boundarycorrection for moving picture A motion compensated predicting device compensates motion by segmenting a reference image to generate an initial predicted image and estimated value correcting information. The correcting information includes area segmentation information, motion informat... | 02/03/1998 |
| 5638127 | Adaptive blocking image signal coding system An adaptive blocking coding system selects an effective blocking of an input image signal to be encoded in accordance with the correlation between fields, even if motion is detected between the fields. The blocking patterns include an individual field blo... | 06/10/1997 |
| 5517246 | Image processing apparatus and method, and system thereof An image processing system determines a characteristic of a moving picture, when moving-picture information is compressed, by comparing the contents of contiguous frames comprising the moving picture. The characteristic can be such that the background is ... | 05/14/1996 |
| 5475432 | Hibrid video signal encoder having a block rearrangement capability for better compressibility A hybrid coder, for performing interframe video encoding which combines the advantages of both the interfield and the interframe codings for low bit-rate video transmission; the pel elements of a differential block from a subtracter is rearranged; the com... | 12/12/1995 |
| 5396292 | Encoding apparatus for motion video signals A subtracter (20) supplies a prediction error signal (21), derived from a prediction signal (101) and an input motion video signal (1). A quantizer (30) quantizes the prediction error signal to generate a quantized prediction error signal (31). A reproduc... | 03/07/1995 |
| 4999705 | Three dimensional motion compensated video coding A video signal encoder uses three dimensional transform coding on blocks of intensity values and then selects the most significant coefficients for further processing by separating the coefficients into several groups have approximately the same energy an... | 03/12/1991 |
| 4931879 | Image processing system for recording or reproducing an image signal sequence which has been encoded by employing two predictive coding methods and combining the results of those methods In an image recording system for use in recording a sequence of coded signals on a recording medium, such as a CD-ROM in response to a sequence of image signals divisible into a succession of frames each of which is subdivided into a plurality of splits, ... | 06/05/1990 |
| 4897720 | Circuit implementation of block matching algorithm A circuit for implementing a full search block matching algorithm for coding video signals sequentially receives pixel values from a block of pixels in a current video frame and sequentially receives pixel values from a search area of a previous video fra... | 01/30/1990 |
| 4893184 | Arrangement for DPCM-coding with high data rate An arrangement for DPCM coding with high data rate. In a DPCM coder, wherein respective prediction values (s) are subtracted from digitized picture element signals (s), the difference signals that result represent the prediction error Ɗ supplied to a cir... | 01/09/1990 |
