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    • 6. 发明申请
    • SYSTEM FOR PRE-FETCHING DATA FRAMES USING HINTS FROM WORK QUEUE SCHEDULER
    • 用于使用工作队列调度员的提示来预先切断数据框架的系统
    • US20160154737A1
    • 2016-06-02
    • US14556143
    • 2014-11-29
    • Vakul GargBharat Bhushan
    • Vakul GargBharat Bhushan
    • G06F12/08
    • G06F12/0862G06F2212/1021G06F2212/6028
    • A system for pre-fetching a data frame from a system memory to a cache memory includes a processor, a queue manager, and a pre-fetch manager. The processor issues a de-queue request associated with the data frame. The queue manager receives the de-queue request, identifies a frame descriptor associated with the data frame, and generates a pre-fetch hint signal. The pre-fetch manager receives the pre-fetch hint signal and generates a pre-fetch signal and enables the cache memory to pre-fetch the data frame. Subsequently, the queue manager de-queues the frame descriptor. The processor receives the frame descriptor and reads the data frame from the cache memory.
    • 用于将数据帧从系统存储器预取入高速缓冲存储器的系统包括处理器,队列管理器和预取管理器。 处理器发出与数据帧相关联的解除队列请求。 队列管理器接收去队列请求,识别与数据帧相关联的帧描述符,并生成预取提示信号。 预取管理器接收预取提示信号并产生预取信号,并使缓存存储器能够预取数据帧。 随后,队列管理器对帧描述符进行排队。 处理器接收帧描述符并从高速缓冲存储器读取数据帧。
    • 10. 发明授权
    • Method and apparatus for performing subtraction in redundant form arithmetic
    • 用于以冗余形式算术进行减法的方法和装置
    • US06754689B2
    • 2004-06-22
    • US09745697
    • 2000-12-22
    • Bharat BhushanEdward GrochowskiJohn Crawford
    • Bharat BhushanEdward GrochowskiJohn Crawford
    • G06F750
    • G06F7/50G06F7/4824
    • A method and apparatus is disclosed that uses an arithmetic circuit for adding numbers represented in redundant form to subtract numbers received in redundant form, including numbers received from a bypass circuit. The method includes generating a complemented redundant form of at least one number supplied to the arithmetic circuit in redundant form. It also includes providing an adjustment input to the arithmetic circuit to augment a result produced through the arithmetic circuit to generate a valid outcome in redundant form of a subtraction operation. A carry-save adder structure is used in one preferred embodiment of the current invention to perform a subtraction operation A−B, where B is a number represented by one of its valid carry-sum redundant representations. In order to perform the subtraction operation, each of the carry bits and each of the sum bits in a redundant representation of B are complemented and supplied to the carry-save adder. Then a result is corrected by adding an adjustment of three. This adjustment value is incorporated into the result through the carry-save adder circuit. Thus the circuit produces a valid redundant representation for the subtraction operation A−B.
    • 公开了一种方法和装置,其使用运算电路来添加以冗余形式表示的数字,以减去以冗余形式接收的数字,包括从旁路电路接收的数字。 该方法包括以冗余的形式生成提供给运算电路的至少一个数的补码冗余形式。 它还包括向算术电路提供调整输入以增加通过算术电路产生的结果,以产生冗余形式的减法运算来产生有效结果。在本发明的一个优选实施例中使用进位保存加法器结构 执行减法运算AB,其中B是由其有效进位和冗余表示之一表示的数。 为了执行减法运算,B的冗余表示中的每个进位位和每个和位被补码并提供给进位存储加法器。 然后通过添加三个调整来校正结果。 该调整值通过进位保存加法器电路并入结果。 因此,该电路产生用于减法运算A-B的有效冗余表示。