Invention Application
US20140379769A1 METHOD AND SYSTEM FOR PERFORMING DIVISION/MULTIPLICATION OPERATIONS IN DIGITAL PROCESSORS, CORRESPONDING DEVICE AND COMPUTER PROGRAM PRODUCT
审中-公开
在数字处理器,对应设备和计算机程序产品中执行部门/多媒体操作的方法和系统
- Patent Title: METHOD AND SYSTEM FOR PERFORMING DIVISION/MULTIPLICATION OPERATIONS IN DIGITAL PROCESSORS, CORRESPONDING DEVICE AND COMPUTER PROGRAM PRODUCT
- Patent Title (中): 在数字处理器,对应设备和计算机程序产品中执行部门/多媒体操作的方法和系统
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Application No.: US14313273Application Date: 2014-06-24
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Publication No.: US20140379769A1Publication Date: 2014-12-25
- Inventor: Daniele Mangano
- Applicant: STMicroelectronics S.r.l.
- Priority: ITTO2013A000520 20130625
- Main IPC: G06F5/01
- IPC: G06F5/01

Abstract:
A digital processor, such as, e.g., a divider in a PID controller, performs a mathematical operation such as division (or multiplication) involving operands represented by strings of bit signals and an operator to produce an operation result. The processor is configured by identifying first and second power-of-two approximating values of the operator as the nearest lower and nearest higher power-of-two values to the operator. The operation is performed on the input operands by means of the first and second power-of-two approximating values of the operator by shifting the bit signals in the operands by using the first and second power-of-two approximating values in an alternated sequence to produce: first approximate results by using the first power-of-two approximating value, second approximate results by using the second power-of-two approximating value. The average of the first and second approximate results is representative of the accurate result of the operation.
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