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    • 5. 发明申请
    • HIGH-PERFORMANCE DIGITAL IMAGE MEMORY ALLOCATION AND CONTROL SYSTEM
    • 高性能数字图像存储器分配和控制系统
    • US20110153876A1
    • 2011-06-23
    • US12645540
    • 2009-12-23
    • Brian Richard CaffeeScott Charles WarnerLouis Ba LaTheresa Michelle Marconi
    • Brian Richard CaffeeScott Charles WarnerLouis Ba LaTheresa Michelle Marconi
    • G06F13/28
    • G06F13/28
    • Systems and methods are described that facilitate mitigating processor overload and reducing memory waste during image compression. Clients requesting memory allocation are assigned a direct memory access (DMA) channel to which DMA memory blocks are allocated for use during image compression. As each DMA block is used by its channel, the DMA block generates an interrupt message that is counted by a DMA counter and may be optionally processed by the CPU. If the number of interrupts being processed exceeds a first threshold, then memory block size is increased to reduce processor load. If the number of interrupts is below a second, lower threshold, then block size is decreased to reduce and amount of unused but allocated memory in the final block allocated to the channel a compressed image file. Fixed DMA block size may also be used and any DMA block may be programmed to generate an interrupt indicating a memory usage threshold has been crossed and that additional DMA memory blocks should be allocated to continue compression beyond the number of DMA blocks initially allocated.
    • 描述了系统和方法,其有助于减轻处理器过载并减少图像压缩期间的内存浪费。 请求内存分配的客户端被分配直接存储器访问(DMA)通道,DMA存储器块被分配用于在图像压缩期间使用。 由于每个DMA块由其通道使用,DMA块产生由DMA计数器计数的中断消息,并且可以由CPU可选地处理。 如果正在处理的中断数超过第一个阈值,则增加内存块大小以减少处理器负载。 如果中断次数低于一秒,则下限阈值,则减小块大小以减少分配给该通道的最终块中未使用但分配的存储器的数量的压缩图像文件。 还可以使用固定的DMA块大小,并且可以将任何DMA块编程为产生指示已经越过存储器使用阈值的中断,并且应该分配附加的DMA存储器块以继续压缩超过最初分配的DMA块的数量。
    • 6. 发明授权
    • High-performance digital image memory allocation and control system
    • 高性能数字图像存储器分配和控制系统
    • US08205020B2
    • 2012-06-19
    • US12645540
    • 2009-12-23
    • Brian Richard CaffeeScott Charles WarnerLouis Ba LaTheresa Michelle Marconi
    • Brian Richard CaffeeScott Charles WarnerLouis Ba LaTheresa Michelle Marconi
    • G06F13/28
    • G06F13/28
    • Systems and methods are described that facilitate mitigating processor overload and reducing memory waste during image compression. Clients requesting memory allocation are assigned a direct memory access (DMA) channel to which DMA memory blocks are allocated for use during image compression. As each DMA block is used by its channel, the DMA block generates an interrupt message that is counted by a DMA counter and may be optionally processed by the CPU. If the number of interrupts being processed exceeds a first threshold, then memory block size is increased to reduce processor load. If the number of interrupts is below a second, lower threshold, then block size is decreased to reduce and amount of unused but allocated memory in the final block allocated to the channel a compressed image file. Fixed DMA block size may also be used and any DMA block may be programmed to generate an interrupt indicating a memory usage threshold has been crossed and that additional DMA memory blocks should be allocated to continue compression beyond the number of DMA blocks initially allocated.
    • 描述了系统和方法,其有助于减轻处理器过载并减少图像压缩期间的内存浪费。 请求内存分配的客户端被分配直接存储器访问(DMA)通道,DMA存储器块被分配用于在图像压缩期间使用。 由于每个DMA块由其通道使用,DMA块产生由DMA计数器计数的中断消息,并且可以由CPU可选地处理。 如果正在处理的中断数超过第一个阈值,则增加内存块大小以减少处理器负载。 如果中断次数低于一秒,则下限阈值,则减小块大小以减少分配给该通道的最终块中未使用但分配的存储器的数量的压缩图像文件。 还可以使用固定的DMA块大小,并且可以将任何DMA块编程为产生指示已经越过存储器使用阈值的中断,并且应该分配附加的DMA存储器块以继续压缩超过最初分配的DMA块的数量。