摘要:
The present multi-processor system performs information processing suitably. The system can receive, reproduce and record a variety of image contents. By comprising a powerful CPU in the multi-processors, a plurality of pieces of large image data, such as high definition image data or the like, can be processed simultaneously in parallel, which was difficult conventionally. Since task processing, such as demodulation processing or the like, is assigned respectively in view of the remaining processing capacity of each of the plurality of processors, the system can reproduce contents efficiently. By sharing roles, a plurality of different contents, such as an image, a voice, or the like can be processed simultaneously and can be displayed or reproduced at a desired timing.
摘要:
The present invention provides a secure buffer for use in data storage and encryption processing. Blocks or packets of data are passed to a secure buffer within a processor. The processor may be one of many coprocessors, and the secure buffer may be inaccessible to some or all of the coprocessors. Data may be partially or fully encrypted and stored within the secure buffer. Encryption may occur before or after storage in the buffer, or it may take place within the buffer itself. Optionally, the encrypted data may be sent to and retrieved from a shared memory that is accessible by other coprocessors.
摘要:
A parallelization permission and prohibition management unit of a processor manages the permission or prohibition of the parallelization for each combination of partial spaces in cooperation with another parallelization permission and prohibition management unit of a different processor. Specifically, when any given object is present across the boundary between a first partial space and a second partial space, the parallelization is prohibited between the collision process to be performed by any given processor on the virtual objects in the first partial space and the collision process to be performed by another processor on the virtual object in the second partial space.
摘要:
A method, storage medium, processor instruction and processor to for specifying a value in a first portion of a conditional pre-fetch instruction associated with a branch instruction used for effectuating a branch operation, specifying a target instruction address in a second portion of the instruction, evaluating the value to determine whether a condition is met, and pre-fetching one or more instructions starting at the target instruction address into an instruction buffer of the processor when the condition is met, is provided.
摘要:
A multiprocessor system and method wherein one of the processors is assigned the responsibility of handling interrupts and identifying the next processor to handle an interrupt. When that processor switches tasks and determines that it is no longer the least important processor as far as task priority is concerned, it will then select and transfer its interrupt-related responsibilities (i.e., handling the interrupt and determining the next interrupt-handing processor) to the processor which is executing the least important task. The selected processor will then be designated for handling interrupts unless and until it undergoes a task switch and selects a different processor.
摘要:
Methods and apparatus provide for associating memory allocation table (MAT) entries with nodes in a binary tree such that the nodes and the entries are grouped into hierarchical levels, each entry including status information; associating the nodes and the entries with segments of a shared memory of a multi-processor system such that higher level nodes and entries are associated with larger numbers of segments of the shared memory and lower level nodes and entries are associated with smaller numbers of segments of the shared memory; initializing the MAT such that the status information of at least a plurality of entries indicates that the associated segment or segments of the shared memory are available for reservation; and selecting one entry in a group of entries in the MAT at a level corresponding to a desired size of the shared memory to be reserved.
摘要:
A method of and apparatus for compressing a stream of data, such as video data, is disclosed. First, data in the video stream are classified in accordance with their values. Data with values equal to zero are classified in a first class. Data with values less than a predetermined positive number but greater than a predetermined negative number, and not equal to zero, are classified in a second class. All other data are classified in a third class. Data in the first class is compressed using a run length encoding technique. Data in the second class is compressed by reducing the size of the data value and by adding a constant. Data in the third class is not compressed, but is modified by adding a constant. The data can be decompressed by determining the class of the compressed value and reversing the compression process. The compression method disclosed is easy to implement and results in a significant reduction in the amount of data that needs to be transmitted.
摘要:
Methods and apparatus are provided for managing processor tasks in a multi-processor computing system. The system is operable to store the processor tasks in a shared memory that may be accessed by a plurality of sub-processing units of the multi-processor computing system; and permit the sub-processing units to determine which of the processor tasks should be copied from the shared memory and executed based on priorities of the processor tasks.
摘要:
Methods and apparatus provide a processor for operative connection to a main memory for storing data, the processor being operable to request at least some of the data for use; and a local memory in operative connection with the processor such that the data may be stored therein for use by the processor, the local memory not being a hardware cache memory, wherein the processor is operable to execute application program interface code that configures the local memory to include at least one software invoked cache memory area therein.
摘要:
Methods and apparatus are provided for: grouping objects within a three dimensional (3D) graphics space into a plurality of object sets, each object set being located in a respective sub-space within the 3D space; computing final graphics data for each object of the object sets based on initial graphics data for each of the objects, where the respective computations for each of the object sets are performed using a respective one of a plurality of processors of a multi-processor system; and repeating the above steps for each of a plurality of image frames using the final graphics data from a previous image frame as the initial graphics data for a current image frame.