| Patent application number | Description | Published |
|---|
| 20110110446 | SCATTERED PILOT CORRELATION IN DVB-H SYSTEMS - A method for correlating scattered pilot locations in a sequence of OFDM symbols in a multi-carrier transmission system, and includes mapping pilot locations comprising pilot symbols having predetermined known values, wherein the pilot symbols are positioned among data subcarriers in time and frequency dimensions consisting of received pilot symbols and having a predetermined position pattern in the time and frequency dimensions, wherein the predetermined position pattern comprises a finite number of sub-position patterns each corresponding to positions of the pilot symbols; estimating a Doppler spread in a frequency spectrum between the transmitter and the receiver in the multi-carrier transmission system; estimating a channel length of a set of channel paths received at the receiver; and the receiver automatically selecting one of a plurality of predetermined methods of correlating the scattered pilot locations in the sequence of OFDM symbols based only on the estimating processes. | 05-12-2011 |
| 20110110447 | Scattered Pilot Correlation in DVB-H Systems - A method for correlating scattered pilot locations in a sequence of OFDM symbols in a multi-carrier transmission system, and includes mapping pilot locations comprising pilot symbols having predetermined known values, wherein the pilot symbols are positioned among data subcarriers in time and frequency dimensions consisting of received pilot symbols and having a predetermined position pattern in the time and frequency dimensions, wherein the predetermined position pattern comprises a finite number of sub-position patterns each corresponding to positions of the pilot symbols; estimating a Doppler spread in a frequency spectrum between the transmitter and the receiver in the multi-carrier transmission system; estimating a channel length of a set of channel paths received at the receiver; and the receiver automatically selecting one of a plurality of predetermined methods of correlating the scattered pilot locations in the sequence of OFDM symbols based only on the estimating processes. | 05-12-2011 |
| 20110234895 | System and Method for Video Downscaling - A system and method for downscaling signal data, where the system includes an antenna receiving video signal data; an analog-to-digital converter coupled to the antenna and converting the received analog signal data to digital signal data; a memory storing video downscaling instructions; and a video downscaling processor, coupled to the memory and the analog-to-digital converter, wherein the video downscaling processor, upon reading the video downscaling instructions from the memory and executing the downscaling instructions: divides the digital video signal data into a plurality of blocks, wherein each block comprises a plurality of pixel elements; and cycles through the plurality of blocks, and for every block in the plurality of blocks, generates a new block, wherein the new block comprises a plurality of new pixels evenly spaced within the new block. | 09-29-2011 |
| 20110249184 | Apparatus and Method for Adaptive Filtering - An apparatus and a method for adaptive filtering includes an antenna that receives analog video broadcast signal data; an analog-to-digital converter coupled to the antenna and converting the received analog video broadcast signal data to digital video signal data; a frame buffer memory storing the digital video signal data; an instruction memory storing adaptive filtering instructions; and an adaptive filter coupled to the memory and the analog-to-digital converter, wherein the adaptive filter: reads the adaptive filter instructions from the memory; executes the adaptive filter instructions; averages an input pixel with a corresponding pixel stored in the frame buffer memory; calculates a forgetting factor for each pixel in the plurality of pixel values stored in the frame buffer memory; and filters noise from each pixel of the plurality of pixel values stored in the frame buffer memory based on the forgetting factor. | 10-13-2011 |
| 20110249185 | Apparatus and Method for Equalizing Analog TV Signals - An apparatus and method for equalizing analog TV signals includes an antenna that receives the signal data, wherein the signal data comprises a luminance carrier comprising a luminance channel and a chrominance carrier comprising a chrominance channel; an analog-to-digital converter coupled to receiving antenna that converts the received signal data to digital signal data; an instruction memory storing digital equalizer instructions; and a digital equalizer system, coupled to the memory and the analog-to-digital converter, wherein the digital equalizer system processes the digital equalizer instructions to estimate a noise variation of the luminance channel; equalize the luminance channel; and equalize the chrominance channel, wherein the equalization of the chrominance channel is separate and distinct from the equalization of the luminance channel. | 10-13-2011 |
| 20110249720 | Buffer Size Reduction for Wireless Analog TV Receivers - Reducing a frame size in a memory for a receiver includes compressing a first analog television picture frame, storing the compressed frame in the memory, decompressing the compressed frame from the memory, obtaining a second analog television picture frame. The first frame includes a first set of pixels that further include at least one of Red/Green/Blue (RGB) samples and, the second frame includes a second set of pixels. Each of the first set of pixels of first frame being decompressed are compared with the corresponding second set of pixels of second frame to obtain an alpha (α) factor. A Signal to Noise Ratio (SNR) and a motion per pixel of the first set of pixels and the second set of pixels are compared. Each of a pixel is displayed based on the α factor. | 10-13-2011 |
| 20110249723 | Frame Buffer Compression and Memory Allocation in a Video Decoder - Frame buffer video compression on an input video stream to efficiently allocate and utilize memory used for storing reference frames in a video decoder includes parsing a video header to obtain a maximum number of reference frames (N), dividing an available frame buffer memory to hold [N+1] compressed frames, controlling a compression process to limit a size of each frame such that said size is not less than a frame buffer memory size divided by [N+1], parsing messages that contain reference frames by looking ahead in an input video stream buffer of the input video stream, and allocating memory for compressing a given reference frame based on a number of needed frames at a frame buffer. A quantization of the compression process may be adjusted to improve a picture quality of the input video stream. | 10-13-2011 |
| 20110249908 | Optimized Prediction Based Image Compression - A technique for optimizing a prediction method of samples in blocks of an image is provided. The image includes a first block, a second block, a third block, and a fourth block, each of the blocks include 8×8 blocks and form one Macro block. The method includes performing a prediction of the second block, the third block and the fourth block by performing at least one of prediction methods. A prediction error per block (P | 10-13-2011 |
