| Patent application number | Description | Published |
|---|
| 20090238481 | METHOD AND APPARATUS FOR GENERATING CODED BLOCK PATTERN FOR HIGHPASS COEFFICIENTS - A method and an apparatus for generating a coded block pattern for highpass coefficients are provided. The method includes receiving a quantized highpass coefficient (HP), wherein the HP includes a macroblock data; dividing the macroblock into a plurality of blocks; performing lapped transform (LT) operations of two stages on the said block data, concurrently calculating a plurality of coded block patterns of the blocks corresponding to all possible HP prediction directions; performing a calculation to obtain selection information of the HP prediction directions according to lowpass coefficients (LPs) generated through LT operations of the two stages; selecting a corresponding coded block pattern among the said coded block patterns according to the above-mentioned selection information of the HP prediction directions and outputting the selected coded block pattern. | 09-24-2009 |
| 20090240754 | OPERATION METHOD AND APPARATUS FOR PERFORMING OVERLAP FILTER AND CORE TRANSFORM - A hardware implementation method for concurrently realizing overlap filter and core transform and an operation method thereof are provided. The overlap filter and core transform can be adjusted according to different specifications, processes, and operation frequencies. The hardware implementation method and the operation method thereof adopt a transform-level hardware sharing architecture and multi-port input/output register array, thereby efficiently realizing overlap filter and core transform. | 09-24-2009 |
| 20090245672 | ENTROPY ENCODING CIRCUIT AND ENCODING METHOD THEREOF - An entropy encoding circuit having two entropy encoders is provided. A first encoding procedure performs an adaptive scan on the encoding coefficient, and the second encoding procedure performs a fixed scan on the encoding coefficient. One of the entropy encoders receives a first encoding coefficient and performs the first encoding procedure on the first encoding coefficient to output a first encoded stream data. The other entropy encoder receives a second encoding coefficient and a normalization signal and performs the second encoding procedure on the second encoding coefficient according to the normalization signal to output a second encoded stream data. The entropy encoding circuit alternatively outputs the first encoded stream data and the second encoded stream data. | 10-01-2009 |
| 20090274382 | ENTROPY DECODING CIRCUIT, ENTROPY DECODING METHOD, AND ENTROPY DECODING METHOD USING PIPELINE MANNER - An entropy decoding circuit, an entropy decoding method, and an entropy decoding method using a pipeline manner are provided. The entropy decoding circuit includes a coefficient register unit, a first entropy decoder, a read/write control circuit, and a second entropy decoder. The first entropy decoder reads a first stream to be decoded to perform a first entropy decoding process thereupon and writes it to the coefficient register unit in an adaptive scan order through the read/write control circuit. The second entropy decoder reads a second stream to be decoded and performs a decoding process thereupon according to a normalization parameter and whether a normalized coefficient is zero or not. Meanwhile, the normalized coefficient in the coefficient register unit is read out in a fixed scan order through the read/write control circuit to complete the decoding process. | 11-05-2009 |
| 20100150231 | APPARATUS FOR REFERENCE PICTURE RESAMPLING GENERATION AND METHOD THEREOF AND VIDEO DECODING SYSTEM USING THE SAME - The exemplary embodiments of the present invention are direct to a method for generating a resampling reference picture and an apparatus and video decoding system using this method. The video image decoding system is used to decode a bit stream, so as to obtain a current frame. The method for generating a resampling reference picture includes following steps: (a) looking ahead specific information of next x frames of the current frame in the bit stream; (b) determining whether to generate a resampling reference picture according to the specific information of the next x frames. | 06-17-2010 |
| 20100195739 | ADAPTIVE CANONICAL HUFFMAN DECODER AND METHOD THEREOF AND VIDEO DECODER - An adaptive canonical Huffman decoder including a symbol index generator, a content selector, and a symbol table buffer circuit is illustrated. The content selector outputs a content selection signal. The symbol table buffer circuit reads a corresponding symbol table from a plurality of symbol tables stored in an external memory according to the content selection signal and stores the corresponding symbol table. The symbol index generator stores decoding information of a plurality of encoding tables and selects a corresponding decoding information among all the decoding information according to the content selection signal. Then, the symbol index generator receives a bit stream and decodes the bit stream according to the corresponding decoding information to obtain a symbol index. After that, the symbol table buffer circuit obtains an output symbol from the corresponding symbol table according to the symbol index. | 08-05-2010 |
| 20100239018 | VIDEO PROCESSING METHOD AND VIDEO PROCESSOR - A video processing method and a video processor are disclosed. The video processor includes a processing device, and the video processor is coupled to a buffer. The video processor reads a plurality of current frames to be coded and a plurality of search windows, and performs motion estimation on a plurality of macroblocks (MBs), wherein the MBs are co-located within the current frames to be coded and the current frames to be coded have no data dependence on each other. | 09-23-2010 |
| 20100254459 | INTRA PREDICTION MODE SELECTING APPARATUS AND METHOD THEREOF - An intra prediction mode selecting method is disclosed. First, a compress profile and a frame resolution of a frame data are received. Next, a plurality of corresponding prediction modes are selected according to the compress profile and the frame resolution, and the selected prediction modes are scheduled for sequentially calculating a plurality of corresponding cost functions. Finally, the cost functions are compared to select one of the prediction modes to serve as a prediction mode of the frame data. | 10-07-2010 |
| 20100322512 | IMAGE PROCESSING APPARATUS AND METHOD THEREOF - An image processing apparatus and a method thereof are provided. The image processing apparatus includes a memory device and a first and a second image data transformation unit. A first image data is written into and read from the memory device. Each pixel value has a first data format. The first data format is compatible with a dedicated format accessible by the memory device. The first image data transformation unit transforms a second image data into the first image data. The second image data includes a plurality of pixel values each having a second data format. The second data format is not compatible with the dedicated format. The second image data transformation unit transforms the first image data into a third image data. The third image data includes a plurality of pixel values each having a third data format. The third data format is not compatible with the dedicated format. | 12-23-2010 |
| 20110123128 | BIT RATE CONTROL CIRCUIT AND METHOD FOR IMAGE COMPRESSION - A bit rate control circuit for image compression includes a compression unit, a R-value calculation unit, a linear quantization factor (LQF) calculation unit. The compression unit is used to performs a first quantization process on an image based on a default LQF (LQF | 05-26-2011 |
| 20110142130 | PICTURE DECODER - A picture decoder having a stream buffer, an H.264/AVC decoder, and a processor is provided. The stream buffer stores stream data. The H.264/AVC decoder decodes the stream data and performs an operation on a slice layer specified in the H.264/AVC standard to reorder reference pictures recorded in a reference picture list according to the stream data and generate a plurality of decoded pictures. The processor executes a program to perform an operation on a sequence layer specified in the H.264/AVC standard and mark the decoded pictures. | 06-16-2011 |
