Class / Patent application number | Description | Number of patent applications / Date published |
375240210 | Subsampling | 16 |
20080212682 | Reduced resolution video transcoding with greatly reduced complexity - A method for receiving encoded MPEG-2 video signals and transcoding the received encoded signals to encoded H.264 reduced resolution video signals, including the following steps: decoding the encoded MPEG-2 video signals to obtain frames of uncompressed video signals and to also obtain MPEG-2 feature signals; deriving H.264 mode estimation signals from the MPEG-2 feature signals; subsampling the frames of uncompressed video signals to produce subsampled frames of video signals; and producing the encoded H.264 reduced resolution video signals using the subsampled frames of video signals and the H.264 mode estimation signals. | 09-04-2008 |
20080219353 | DE-INTERLACING METHOD AND METHOD OF COMPENSATING A DE-INTERLACED PIXEL - A luminance compensating method of compensating a de-interlaced pixel in a current block of a current frame with reference to a reference block of a reference frame is provided. First, calculate an average luminance of the current block and an average luminance of the reference block. Next, adjust the luminance of the de-interlaced pixel by a luminance difference between the average luminance of the current block and the average luminance of the reference block, such that the luminance of the de-interlaced pixel is more appropriate and the display quality is improved. | 09-11-2008 |
20080225953 | BANDWIDTH ADAPTIVE STREAM SELECTION - An apparatus and corresponding method are provided for selecting one of several alternate input streams for transmission, the method including determining bandwidth requirements for each of the alternate input streams, measuring bandwidth currently available for transmission, and selecting for transmission one of the alternate input streams that has the highest determined bandwidth requirement less than or equal to the measured bandwidth currently available for transmission. | 09-18-2008 |
20080298463 | System, Method, and Computer-Readable Medium for Reducing Required Throughput in an Ultra-Wideband System - A system, method and computer-readable medium for reducing the required throughput in an ultra-wideband system is provided. A temporal sub-sampling routine limits the number of frames, or portions thereof, to be transmitted to a sink over an RF link. The temporal sub-sampling routine may have a fixed, or static, sub-sampling rate that specifies the rate at which frames are discarded. In accordance with another embodiment, an automatic temporal sub-sampling mechanism is provided. Additionally, a tile copying mechanism may be implemented for reducing the throughput of the RF link. A WDV subsystem may include an interface to an external frame buffer that facilitates the temporal sub-sampling and tile copy routines disclosed herein. | 12-04-2008 |
20090060046 | Method and apparatus for improving the quality of a transmitted video signal - A feedback circuit for restoration of DC reference levels in video signals is presented. In one or more embodiments, a DC sample pulse is generated representing the back porch of an incoming video signal. A sample and hold circuit, which is controlled by the DC sample pulse, obtains the correct offset voltage in the output signal during this back porch period. The offset voltage feeds back through an integrating node in front of the circuit causing an amplifier to compensate for the signal offset thereby restoring the video signal to its proper DC voltage level with respect to ground. | 03-05-2009 |
20090232220 | System and method for reformatting digital broadcast multimedia for a mobile device - A system and a method reformat digital broadcast multimedia for a mobile device. The system and the method reformat and/or repackage audiovisual content into a format that may be rendered on the mobile device without the need for additional custom software on the mobile device. The system and the method reformat incoming mobile broadcast audiovisual content into 3GPP Progressive Download format in real time while simultaneously delivering a resulting 3GPP Progressive Download file to the mobile device for rendering. | 09-17-2009 |
20100027678 | ENCODING AND DECODING METHODS AND APPARATUS, SIGNAL AND COMPUTER PROGRAM PRODUCT THEREFOR - A video sequence including images in the form of digital samples is encoded by: subsampling the video sequence to produce: a number N of multiple descriptions of the video sequence, each multiple description including 1/N samples of the video sequence, and a subsampled version of the sequence, the subsampled version having a resolution lower or equal to the resolution of the N multiple descriptions. The N multiple descriptions and the subsampled version are subjected to scalable video coding (SVC) to produce an SVC encoded signal having a base layer and N enhancement layers predicted from said base layer. The subsampled version of the sequence and the N multiple descriptions of the video sequence constitute the base layer and the enhancement layers, respectively, of the SVC encoded signal. | 02-04-2010 |
20100034287 | Variable general purpose compression for video images (ZLN) - Methods, medium, and machines which compress, enhance, encode, transmit, decode, decompress and display digital video images in real time. Real time compression is achieved by sub-sampling each frame of a video signal, filtering the pixel values, and encoding. Real time transmission is achieved due to high levels of effective compression. Real time decompression is achieved by decoding and decompressing the encoded data to display high quality images. A receiver can alter various setting including, but not limited to, the format for the compression, image size, frame rate, brightness and contrast. | 02-11-2010 |
20110206130 | IMAGE TRANSMISSION APPARATUS AND IMAGE RECEPTION APPARATUS - According to one embodiment, an image transmission apparatus includes a video processor. The video processor is configured to generate video data by applying one of first to fourth video processing to a predetermined unit image, the first to fourth video processing being (a) the first video processing of generating the predetermined unit image as the video data, (b) the second video processing of generating the video data by compressing the predetermined unit image, (c) the third video processing of performing a subsampling processing of performing pixel-separation of the predetermined unit image into subsampled images in accordance with pixel phases, and of generating each of the subsampled images as the video data, and (d) the fourth video processing of performing the subsampling processing of separating the predetermined unit image into the subsampled images in accordance with pixel phases, and of generating the video data by compressing each of the subsampled images. | 08-25-2011 |
20120219066 | DATA SUBSTREAM ENCAPSULATION METHOD, DE-ENCAPSULATION METHOD, AND CORRESPONDING COMPUTER PROGRAMS - A method and apparatus are provided for encapsulating a plurality of data substreams encoded in a bit stream, wherein the encoded data substream is obtained by entropy encoding of a symbol subsequence representing an image or a series of images. The method includes grouping data substreams into substream pairs according to an iterative traversal order predetermined from the plurality of substreams, and on the basis of a pair of the substreams, obtaining a symmetrical pair by reversing a data order making up the second substream of the pair. The obtained pairs are then concatenated within a sequence. The binary stream is created by encapsulating the sequence and information related to a number of substreams and related to the sizes of pairs of symmetrical substreams. | 08-30-2012 |
20130156109 | METHOD OF TRANSMITTING VIDEO INFORMATION OVER A WIRELESS MULTI-PATH COMMUNICATION LINK AND CORRESPONDING WIRELESS STATION - The present invention a method of transmitting video information over a communication link made of several transmission paths between wireless transmitting and receiving stations. The method comprises, in the wireless transmitting station, obtaining an uncompressed video frame made of an array of pixel blocks, a pixel in the pixel blocks being represented by base pixel information and enhancement pixel information; generating at least one set of complementary pixel blocks from a given pixel block of the obtained uncompressed video frame, by applying different operations to said given pixel block for dropping different enhancement pixel information from that pixel block, so that the complementary pixel blocks comprise different enhancement pixel information and each comprises the base pixel information; and for each set, transmitting the complementary pixel blocks over respective different transmission paths to the wireless receiving station. This provides robustness of video transmission while keeping a high quality of video rendering. | 06-20-2013 |
20140307802 | CODING, STORAGE AND SIGNALLING OF SCALABILITY INFORMATION - A method and device for encoding, decoding, storage and transmission of a scalable data stream to include layers having different coding properties including: producing one or more layers of the scalable data stream, wherein the coding properties include at least one of the following: Fine granularity scalability information; Region-of-interest scalability information; Sub-sample scalable layer information; Decoding dependency information; and Initial parameter sets, and signaling the layers with the characterized coding property such that they are readable by a decoder without the need to decode the entire layers. A corresponding method of encoding, decoding, storage, and transmission of a scalable bit stream is also disclosed, wherein at least two scalability layers are present and each layer has a set of at least one property, such as those above identified. | 10-16-2014 |
20150319458 | METHODS AND APPARATUS FOR AUTOMATICALLY DETECTING IMAGE/VIDEO RESOLUTION AND ITS COLOR SUBSAMPLING - Methods and apparatus for automatic detection of image or video resolution from raw image or video data are provided by the present principles. The methods find statistical metrics in the image or video data based on a look-up table of potential resolution and subsampling combinations. The methods compute statistics comprising spatial correlation, temporal correlation, and variances in addition to considering color sampling and luminance levels. The methods determine the strength of correlation between portions of the raw image or video data and find the best match between the data and a plurality of possible resolution and subsampling formats. | 11-05-2015 |
20150326878 | SELECTIVE PERCEPTUAL MASKING VIA SCALE SEPARATION IN THE SPATIAL AND TEMPORAL DOMAINS USING INTRINSIC IMAGES FOR USE IN DATA COMPRESSION - An automated, computerized method for processing a video is provided. The method includes providing a video file depicting a video, in a computer memory; scale separating the video file to generate a first scale-separated video and a second scale-separated video corresponding to the video; filtering at least one of the first scale-separated video and the second scale-separated video independent of the other of the first scale-separated video and the second scale-separated video to provide at least one independently filtered video; and compressing the at least one independently filtered video to provide at least one compressed video. | 11-12-2015 |
20160150241 | INFORMATION PROCESSING APPARATUS AND METHOD - The present disclosure relates to an information processing apparatus and an information processing method that enable recognition of performance required for decoding more accurately. A file of an MP4 file format, in which information indicating a location of a partial image in a whole image is stored in moov, the partial image being able to be independently decoded in the whole image, and the encoded partial image is stored in mdat, is generated, and the generated file is stored. The present disclosure can be applied to, for example, an information processing apparatus such as an image encoding apparatus or an image decoding apparatus. | 05-26-2016 |
20160156928 | INFORMATION PROCESSING APPARATUS AND METHOD | 06-02-2016 |