30results about How to "Reduce cache capacity" patented technology

The present invention is applied to a coding device and a decoding device for moving image data in compliance with, for example, an MPEG-4AVC/ITU-T H. 264 system, in which address data is issued to specify an area that is a plurality of read units in a horizontal direction and a vertical direction, respectively, and reference image data is stored in a cache memory.

The invention relates to a convolution calculation accelerator, a convolution calculation method and convolution calculation equipment, and relates to the technical field of electronic circuits. The convolution calculation accelerator comprises a controller, a calculation matrix and a first cache, the calculation matrix comprises at least one row of calculation units, and each row of calculation units comprises at least two calculation units; the controller is used for controlling input data loaded to the first cache to be input into the computing units of the corresponding rows, and the computing units of the corresponding rows transmit the input data in the computing units of the corresponding rows; each computing unit in the computing units of the corresponding row performs convolutioncomputation on the received input data and a pre-stored convolution kernel; at least two computing units in the same row multiplex the same input data, and only one input channel is needed, so that the cache capacity and input bandwidth requirements of the computing matrix are reduced, and the expandability of the computing matrix is improved.

A display controller capable of reducing cache memory and a frame adjusting method thereof are provided. The display controller comprises a memory controller, a first memory, a second memory and a frame control circuit. The memory controller is for reading part of the image data from a source layer to obtain a first image data, and reading part of the image data from the target layer to obtain a second image data. The first memory is for storing the first image data. The second memory is for storing the second image data. The frame control circuit is for processing the first image data to generate a first processed image data overlaid with the second image data to obtain a second processed image data. If the second processed image data needs further processing, then the display controller loads the second processed image data to an external memory.

A system and method are described for dynamically changing the size of a computer memory such as level 2 cache as used in a graphics processing unit. In an embodiment, a relatively large cache memory can be implemented in a computing system so as to meet the needs of memory intensive applications. But where cache utilization is reduced, the capacity of the cache can be reduced. In this way, power consumption is reduced by powering down a portion of the cache.

A memory system may include a first memory device including a first input/output buffer, a second memory device including a second input/output buffer, and a cache memory suitable for selectively and temporarily storing first and second data to be respectively programmed in the first and second memory devices. The first data is programmed to the first memory device in a first program section by being stored in the cache memory only in a first monopoly section of the first program section. The second data is programmed to the second memory device in a second program section by being stored in the cache memory only in a second monopoly section of a second program section. The first monopoly section and the second monopoly section are set not to overlap each other.

when a non-subsequent read occurs which is a read from a non-subsequent address not consecutive to the previous read address, a first cache memory sequentially caches respective data of the non-subsequent address and n addresses following the non-subsequent address, where n is an integer of one or greater, while the cached data of the n addresses are stored into a second cache memory, and subsequently, until the next non-subsequent read is performed, data of addresses following the last one of the n addresses are sequentially read from a memory, not via the first cache memory and stored into the second cache memory. In response to subsequent reads following the non-subsequent read, the second cache memory outputs the data of read addresses specified by the subsequent reads.

The invention discloses a method for generating any triangle filling picture assembly based on an FPGA. The method comprises the steps that 1, coordinates and color values of the three vertexes of a triangle are obtained; 2, a first RAM and a second RAM are generated inside an image signal generator; 3, the two RAMs are initialized; 4, the horizontal coordinate and the vertical coordinate of each pixel in the three edges of a triangle filling picture are generated; 5, the minimum horizontal coordinate, corresponding to each vertical coordinate, in the effective pixel of the triangle filling picture is obtained; 6, the maximum horizontal coordinate, corresponding to each vertical coordinate, in the effective pixel in the triangle filing picture is obtained; 7, the coordinates are scanned within the range of a triangle circumscribed rectangle, whether each pixel is located in the triangle or not is judged, and the color values are given to the pixels in the triangle. The method can generate complex logic pictures like any triangle filling picture assembly through the FPGA.

The invention provides an LLR processing method and receiving equipment. According to the embodiment of the invention, only the data of one subframe needs buffer memory before LLR processing, thereby saving the buffer memory size of the data of one subframe and reducing the cost of chips of the receiving equipment. In addition, the power consumption and the processing time delay of the receiving equipment can further be reduced.

A display controller used for reducing service of high speed buffer storage is prepared as fetching image data from source frame and destination frame to separately obtain the first and the second image data by storage controller, storing the second image data by the second storage, processing the first image data by frame management circuit and generating processed first image data, superposing processed first image data with the second image data in the second storage to form processed second image data, writing processed second image data back to external storage by display controller if it needs to be reprocessed.