| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 348608000 | Processing at encoder or transmitter (e.g., pre-correction) | 26 |
| 20080316364 | RATE DISTORTION OPTIMIZATION FOR VIDEO DENOISING - Based on maximum a posteriori (MAP) estimates, video denoising techniques for frames of noisy video are provided. With the assumptions that noise is similar to or satisfies Gaussian distribution and an a priori conditional density model measurable by bit rate, a MAP estimate of a denoised current frame can be expressed as a rate distortion optimization problem. A constraint minimization problem based on the rate distortion optimization problem is used to vary a lagrangian parameter to optimize the denoising process. The lagrangian parameter is determined as a function of distortion of the noise. | 12-25-2008 |
| 20090021646 | METHOD AND SYSTEM FOR COMMUNICATION OF UNCOMPRESSED VIDEO INFORMATION IN WIRELESS SYSTEMS - A method and system for communicating video information over wireless channels is provided. Communicating video information involves receiving a frame of video pixel information, partitioning spatially correlated pixels into different partitions and allocating pixel information from the pixel partitions across one or more of said multiple channels based on channel conditions. The allocated pixel information is transmitted on the one or more multiple channels. | 01-22-2009 |
| 20100053447 | METHOD AND APPARATUS FOR PICTURE QUALITY COMPENSATIVE BASED ON FIELD INTENSITY - An apparatus and method for compensating for the picture quality of a stored broadcast signal are disclosed. For reproduction of a broadcast signal stored in a television, the picture quality of the stored broadcast signal is compensated for, based on a predetermined. MPEG noise reduction value corresponding to the electric field strength of the stored broadcast signal. Therefore, it is possible to provide the optimum picture quality. When a broadcast signal is stored, it is stored together with the electric field strength, thereof. When the stored broadcast signal is reproduced, block noise, of a screen is efficiently removed by applying an MPEG, noise reduction value corresponding to the electric field strength of the stored broadcast signal to the stored broadcast signal. Therefore it is possible to improve the definition of the screen. | 03-04-2010 |
| 20100171882 | METHOD FOR TUNING CODING RATE AND APPLYING UNEQUAL ERROR PROTECTION FOR ADAPTIVE VIDEO TRANSMISSION, AND VIDEO TRANSMISSION/RECEPTION APPARATUS USING THE METHOD - Provided are a method of tuning a coding rate and applying an unequal error protection for an adaptive video transmission, and a video transmission/reception apparatus using the method. The video transmission apparatus may include: a coding rate tuner to predict, as a channel capacity of a subsequent channel interval, an estimated channel capacity value fed back from the video reception apparatus, and to tune video and channel coding rates within the predicted channel capacity; a video encoder to perform video encoding of video frames at the tuned video coding rate, and to generate a video packet; and a forward error correction (FEC) encoder to apply the unequal error protection based on a length of the video packet and a type of the video frames included in the video packet, and to perform channel encoding of the video packet at the tuned channel coding rate to generate a bitstream. | 07-08-2010 |
| 20100201885 | ENCODER OF E-8VSB FORWARD ERROR CORRECTION FOR DIGITAL TELEVISION SYSTEM OF ATSC - Provided is an error correcting encoder and, more particularly, to an error correcting encoder used for an improved transmission method of the Advanced Television System Committee (ATSC), and a method thereof. The error correcting encoder for digital television broadcasting, which is suggested in the present research, includes a robust encoder for encoding a one-bit input into robust encoded data; a pre-coding block for receiving the robust encoded data and performing pre-coding to thereby produce a pre-coded signal; and a trellis encoding block for performing trellis encoding on the robust encoded data and the pre-coded signal. | 08-12-2010 |
| 20100245672 | METHOD AND APPARATUS FOR IMAGE AND VIDEO PROCESSING - The present invention relates to an image processing method. The method comprises a step of generating adaptive temporal filter coefficients. Then a recursive filter is applied at least once to an image frame using the generated temporal filter coefficients. The present invention further relates to an apparatus and a computer program product for performing image processing. | 09-30-2010 |
| 20100309379 | EFFICIENT SPATIAL AND TEMPORAL TRANSFORM-BASED VIDEO PREPROCESSING - In one method embodiment, receiving a first temporal sequence of video frames, the first temporal sequence corrupted with noise; frame matching the video frames according to a first stage of processing; denoising the matched frames according to a second stage of processing, the second stage of processing commencing responsive to completion of the first stage of processing for all of the video frames, the second stage of processing comprising overlapped block processing; and wherein denoising further comprises accumulating denoised pixels for each iteration of the overlapped block processing in a two-dimensional (2D)+c accumulation buffer, the 2D accumulation buffer corresponding to the denoised pixels corresponding to a reference frame of the video frames, where c comprises an integer number of non-reference frame buffers greater than or equal to zero. | 12-09-2010 |
| 20100315558 | CONTENT ADAPTIVE NOISE REDUCTION FILTERING FOR IMAGE SIGNALS - A method includes selecting a target pixel and comparing a value of the target pixel with a respective value of each of a plurality of pixels located in an area that includes the target pixel. Further, for each pixel of the plurality of pixels that has a value different by at least a threshold amount from the value of the target pixel, the value of such pixel is replaced by the value of the target pixel. A filter function is applied to a set of pixels which includes the value of the target pixel and current values, after the selective replacement step, of the plurality of pixels. | 12-16-2010 |
| 20110019097 | Video pattern generating device - A video pattern generating device includes a housing, a set of buttons mounted on the housing, a display mounted on the housing, and a circuit board consisting of a keyboard circuit, a control circuit, a display circuit, a video pattern generating circuit, an video pattern encoder circuit, an output port, a power circuit and an image amplifier circuit and mounted in the housing and controllable by the buttons to generate video pattern signals and to encode video pattern signals for outputting to an external video output device for horizontal, vertical and pattern field inspection and correction. | 01-27-2011 |
| 20110032428 | VIDEO TRAFFIC SMOOTHING - Video traffic smoothing may be provided. A video stream may be divided into segments for transmission. For each segment, a desired transmission rate and a range of possible transmission rates may be established. The desired transmission rate may be evaluated to determine whether the rate may result in an overflow and/or a starvation of a memory buffer associated with a receiver. The transmission rate and/or the segment size may be varied to avoid these scenarios. | 02-10-2011 |
| 20110032429 | Video transmission using video quality metrics - Video traffic transmission using video quality metrics may be provided. A video stream comprising a plurality of frames may be received. For each frame, a determination may be made whether or not to drop the frame rather than saving and/or transmitting it to an end user, thereby conserving network bandwidth. This determination may be made on the basis of a threshold metric, such as a size ratio between frames, an average frame size, an average quality metric. | 02-10-2011 |
| 20110063514 | DIGITAL TELEVISION TRANSMITTER AND METHOD OF CODING DATA IN DIGITAL TELEVISION TRANSMITTER - A pre-processor pre-processes enhanced data packets by coding the enhanced data packets for forward error correction (FEC) and expanding the FEC-coded data packets. A data formatter adds first null data into first place holders within each pre-processed enhanced data packet. A first multiplexer multiplexes the main data packets with the enhanced data packets having the first null data. A holder inserter inserts second null data into second place holders within an enhanced data packet outputted from the first multiplexer. A data interleaver replaces the second null data with parity data. A data generator generates at least one known data sequence. A symbol processor replaces the first null data included in an output of the data interleaver with the known data sequence(s). A non-systematic RS encoder generates the parity data by performing non-systematic RS-coding on an output of the symbol processor, and provides the parity data to the data interleaver. | 03-17-2011 |
| 20110273621 | Method of and apparatus for processing image data - The invention relates to a method ( | 11-10-2011 |
| 20120008049 | METHOD FOR TRANSMITTING/RECEIVING BROADCASTING SIGNAL AND BROADCASTING SIGNAL RECEIVER - A method for transmitting/receiving a broadcasting signal and a broadcasting signal receiver are disclosed. An identifier of a burst period is obtained from program table information of the broadcasting signal including mobile data and only the burst period in which a broadcasting program desired by a user is transmitted is received. Accordingly, when the broadcasting signal is received, only a desired burst period is received such that power consumption of the broadcasting signal receiver can be reduced. | 01-12-2012 |
| 20120044422 | Video Signal Processing - A video compression unit ( | 02-23-2012 |
| 20120057076 | FILTERING STRENGTH DETERMINATION METHOD, MOVING PICTURE CODING METHOD AND MOVING PICTURE DECODING METHOD - A moving picture coding apparatus includes an inter-pixel filter having filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries. The inter-pixel filter includes filters having different filtering strengths. The coding apparatus also includes a filter processing control unit for determining a filtering strength of the inter-pixel filter. | 03-08-2012 |
| 20130286288 | System and Method for Encoder-Integrated Media Denoising - Embodiments are provided herein to achieve video or image sequence encoding with an improved denoising algorithm that is both efficient computationally and has acceptable overhead cost in comparison to other denoising schemes for video encoding. The embodiments include using recursive bilateral filtering as part of the denoising algorithm, which is integrated into a video encoder to overcome limitations of other encoder-integrated denoising algorithms. An embodiment method includes receiving, at a filtering and residual computation function at the encoder, a macro block comprising a plurality of pixels. The filtering and residual computation function also receives, from a motion estimation function at the encoder, a reference block. The reference block comprises a plurality of reference pixels corresponding to the macro block. The filtering and residual computation function further applies a recursive bilateral filter function to each of the pixels of the macro block using the reference pixels of the reference block. | 10-31-2013 |
| 20140267921 | DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA IN DIGITAL BROADCASTING SYSTEM - The present invention provides a data processing method, the data processing method including receiving a broadcasting signal where mobile service data are multiplexed with main service data, extracting transmission-parameter-channel signaling information and fast-information-channel signaling information from a data group within the received mobile service data, parsing first program table information describing virtual channel information of an ensemble and a service provided by the ensemble using the fast-information-channel signaling information, the ensemble the ensemble corresponding to a virtual channel group of the received mobile service data, obtaining information representing that second program table information, which includes a descriptor describing event information of the mobile service data, is received, from the first program table information, parsing the second program table information, and storing the event information and displaying service guide information including the event information. | 09-18-2014 |
| 20150146105 | FILTERING METHOD FOR REMOVING BLOCK ARTIFACTS AND/OR RINGING NOISE AND APPARATUS THEREFOR - Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data. | 05-28-2015 |
| 20150146106 | FILTERING METHOD FOR REMOVING BLOCK ARTIFACTS AND/OR RINGING NOISE AND APPARATUS THEREFOR - Provided are a filtering method and apparatus for removing blocking artifacts and ringing noise. The filtering method includes transforming video data on a block-by-block basis, and detecting the presence of an edge region in the video data by checking the distribution of values obtained by the transformation. Accordingly, it is possible to completely remove blocking artifacts and/or ringing noise by more effectively detecting the presence of an edge region in video data. | 05-28-2015 |
| 348609000 | Reduction of chrominance luminance cross-talk (e.g., precomb) | 4 |
| 20110317072 | IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREOF - A brightness control unit includes: a “feedback brightness control unit” that calculates a first gain from a corrected image data and multiplies the first gain by image data prior to correct; and a “feedforward brightness control unit” which, when a scene change is detected, calculates a second gain on the basis of a difference between the first gain which is calculated from the corrected image data and the first gain which has been multiplied by the pre-correction image data of the corrected image data in order to correct the difference, and multiplies the second gain by the corrected image data. | 12-29-2011 |
| 20120062799 | ESTIMATING VIDEO CROSS-TALK - A video cross-talk estimator comprising a visual input signal receiver configured to receive a visual input signal, a capture signal receiver configured to receive a capture signal, and a signal based video-cross talk determiner configured to estimate video cross-talk based on at least two frames of the visual input signal. The estimation of the video cross-talk is signal based. | 03-15-2012 |
| 20120169936 | Noise reduction filter circuitry and method - The present invention provides filter circuitry for reducing noise in an input stream of image signals having luminance and chrominance components. Spatial filter circuitry is provided which, for a current image signal of the input stream, generates a spatially filtered internal signal from at least the luminance component of the current image signal. Comparison circuitry is configured to compare the current image signal with temporal data derived from multiple image signals of the input stream, and to generate a control signal dependent on the comparison. Combining circuitry is then used to combine, in a ratio determined by the control signal, the spatially filtered internal signal with at least a luminance component derived from the temporal data, in order to generate at least the luminance component of a current output image signal that forms a noise reduced version of the current image signal. Such a form of filter circuitry has been found to provide a filtered stream of image signals with significant noise suppression, and is particularly well suited to providing a filtered stream of image signals for input to video encoding circuitry, enabling significant improvements in the efficiency of the encoding circuitry by virtue of the manner in which the noise is suppressed. | 07-05-2012 |
| 348610000 | Adaptive | 1 |
| 20160150206 | System and Method For Reducing Intra-Channel Interference - The present invention provides a method for determining a local oscillator frequency for a baseband converter, comprising obtaining characteristics of a channel comprising a plurality of radio signals at corresponding radio frequencies; using the channel characteristics to select a local oscillator frequency to use in baseband conversion of the plurality of radio signals of the channel to form a first baseband converted signal and a second baseband converted signal; and programming a local oscillator to operate the selected local oscillator frequency; wherein the local oscillator frequency is selected such that an image rejection ratio of the baseband converted second signal to an image of the baseband converted first signal is above a predetermined threshold. | 05-26-2016 |
| 348613000 | Complementary system (e.g., preemphasis - deemphasis) | 2 |
| 20090040387 | VIDEO PROCESSING CIRCUITS AND METHODS USING SAME BUFFER FOR VIDEO DECODER AND CROSS COLOR SUPPRESSOR - A video processing circuit capable of processing a composite signal and a non-composite signal, includes: a line buffer; a frame buffer; a video decoder for decoding the composite signal by utilizing the line buffer and the frame buffer as temporary buffers of the video decoder; a cross color suppressor for performing color suppression on the non-composite signal by utilizing the line buffer and the frame buffer as temporary buffers of the cross color suppressor; and a path controller, coupled to the video decoder and the cross color suppressor, for coupling the line buffer and the frame buffer to the video decoder or the cross color suppressor when utilizing the line buffer and the frame buffer is required. | 02-12-2009 |
| 20090096927 | SYSTEM AND METHOD FOR VIDEO CODING USING VARIABLE COMPRESSION AND OBJECT MOTION TRACKING - A video coding technique and system employ variable compression for different portions of an imaged scene and motion tracking of an object. The object is coded to have higher fidelity than a remainder of the scene. The higher fidelity facilitates tracking of the object that, in turn, assists in maintaining quality coding of the object. | 04-16-2009 |
