Invention Grant
- Patent Title: RAM-based event counters using transposition
- Patent Title (中): 基于RAM的事件计数器使用转置
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Application No.: US13312627Application Date: 2011-12-06
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Publication No.: US08345816B1Publication Date: 2013-01-01
- Inventor: Narasimha R. Adiga , Peter H. Hochschild , Ashutosh Misra
- Applicant: Narasimha R. Adiga , Peter H. Hochschild , Ashutosh Misra
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Roberts, Mlotkowski, Safran, & Cole, P.C.
- Agent Michael J. Le Strange
- Main IPC: G06M3/00
- IPC: G06M3/00

Abstract:
Methods and structures that implement an event counter in a RAM are provided. A method includes providing a count-RAM, a carry-RAM, and a pre-counter corresponding to an event source. A column in the count-RAM and a column in the carry-RAM represent a value of a value of the event counter. The method further includes storing a count of the event counter received via the pre-counter in the count-RAM and the carry-RAM in a transposed, bit-serial format, such that location zero of the count-RAM and the carry-RAM counts the least significant bit (LSB) of the event counter.
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