摘要:
A method and apparatus for allocating resources for physical channels in a mobile communication system are disclosed. An apparatus for allocating resources, the apparatus comprising: An address generation unit allocating spare resources to a physical channel with reference to resource allocation information stored in a monitoring unit, and generating an address value of a frame generation unit corresponding to frequency and symbol index values of the allocated resources; the frame generation unit storing data to be transmitted via the physical channel in the generated address value to generate subframe data; and the monitoring unit storing an address value corresponding to the physical channel generated by the address generation unit.
摘要:
Provided are a method and apparatus for efficiently transferring a massive amount of multimedia data between two processors. The apparatus includes a first local switch, which connects a virtual page of a first processor element to a shared memory page, a second local switch, which connects a virtual page of a second processor element to the shared memory page, a shared page switch, which connects a predetermined shared memory page of a shared physical memory to the first or second local switch, and a switch manager, which remaps a certain shared memory page of the shared physical memory that stores data of a task performed by the first processor element to the virtual page of the second processor element. Accordingly, since memory remapping is used, the massive amount of multimedia data can be transmitted by changing a method of mapping a memory, unlike a case when multimedia data is transmitted by using a memory bus.
摘要:
Provided are an apparatus, a method, and a data processing element (DPE) for efficient parallel processing of multimedia data. The DPE includes: a memory routing unit (MRU) comprising a shared memory page shared by the DPE and DPEs that are adjacent to the DPE, and a shared page switch selectively connecting the shared memory page to the DPE and the adjacent DPEs; and a data processing unit (DPU) comprising a virtual page for connecting the DPU to the shared memory page, and a dynamic remapper assigning the shared memory page to a DPE according to conditions that a series of tasks for processing multimedia data are performed in the DPE and the adjacent DPEs, and controlling the shared page switch according to the assigning. Accordingly, multimedia data can be efficiently processed in parallel by mapping a temporal and directional shared memory between DPEs.
摘要:
Disclosed are a frame synchronization method and a receiver for a communication modem using the same. The frame synchronization method includes performing a correlation operation between a reception data stream and a preamble to output a synchronous signal; and computing correlation values between spreading codes and a reception data stream synchronized with the synchronous signal, wherein a maximum value of the computed correlation values is compared with a preset threshold value, and the outputting of the synchronous signal is performed again when the maximum value is smaller than the preset threshold value.
摘要:
Provided are an apparatus and a method of reducing memory access conflict. An apparatus for reducing memory access conflict when a plurality of data processing elements perform simultaneous access to a memory including a plurality of pages, each of which includes a plurality of subpages, the apparatus comprising: an access arbiter mapping a subpage division address corresponding to least significant bits of a memory access address received from each of the data processing elements to another address having a same number of bits as the subpage division address in order for data to be output from each of the subpages in a corresponding page at a time of the simultaneous access; and a selector, prepared for each of the pages, selecting to output one of the data output from the subpages using the mapped results.
摘要:
Disclosed are a frame synchronization method and a receiver for a communication modem using the same. The frame synchronization method includes performing a correlation operation between a reception data stream and a preamble to output a synchronous signal; and computing correlation values between spreading codes and a reception data stream synchronized with the synchronous signal, wherein a maximum value of the computed correlation values is compared with a preset threshold value, and the outputting of the synchronous signal is performed again when the maximum value is smaller than the preset threshold value.
摘要:
Provided are an apparatus, a method, and a data processing element (DPE) for efficient parallel processing of multimedia data. The DPE includes: a memory routing unit (MRU) comprising a shared memory page shared by the DPE and DPEs that are adjacent to the DPE, and a shared page switch selectively connecting the shared memory page to the DPE and the adjacent DPEs; and a data processing unit (DPU) comprising a virtual page for connecting the DPU to the shared memory page, and a dynamic remapper assigning the shared memory page to a DPE according to conditions that a series of tasks for processing multimedia data are performed in the DPE and the adjacent DPEs, and controlling the shared page switch according to the assigning. Accordingly, multimedia data can be efficiently processed in parallel by mapping a temporal and directional shared memory between DPEs.
摘要:
Disclosed are motion estimation apparatus and method. The present invention can reduce an external memory access in an area in which a macroblock is large while preventing image quality from deteriorating due to motion estimation according to coding units, by obtaining a minimum motion vector using a prediction method in 64×64 and 32×32 modes for the coding units meeting a high efficiency video coding (HEVC) standard and obtaining a motion vector using a full search method in other modes.
摘要:
Disclosed is a motion estimation apparatus and method capable of reduce a memory bandwidth by accessing reference image data occupying the largest part of the memory bandwidth based on a result of motion estimation skip determination. The motion estimation apparatus includes a motion estimation skip determination unit, a sum absolute of absolute difference (SAD) processing unit and a multiplexer (MUX) unit. The motion estimation skip determination unit determines the presence of motion estimation skip by reading current image data and skip reference image data, and outputs a motion vector in a skip mode. The SAD processing unit calculates an SAD value by reading the current image data and reference image data and outputs a motion vector in a normal mode. The MUX unit outputs the motion vector in the skip mode or the motion vector in the normal mode as a final motion vector based on a skip flag signal.
摘要:
A video decoding apparatus and method based on a data and function splitting scheme are disclosed. The video decoding apparatus based on a data and function splitting scheme includes a variable length decoding unit performing variable length decoding and parsing on a bit stream to acquire residual data and a decoding parameter, and splitting the residual data and the decoding parameter by row; and N (N is a natural number of 2 or larger) number of clusters splitting dequantization and inverse discrete cosine transform (IDCT), motion vector prediction, intra prediction and motion compensation, video restoration, and deblocking function into M number of functions, acquiring the residual data, the decoding parameter, and macroblock (MB) processing information of an upper cluster by column, and splitting the information acquired by column into M number of functions to process the same.