Invention Grant
US08010875B2 Error correcting code with chip kill capability and power saving enhancement
有权
错误纠正代码具有芯片杀死能力和节能增强
- Patent Title: Error correcting code with chip kill capability and power saving enhancement
- Patent Title (中): 错误纠正代码具有芯片杀死能力和节能增强
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Application No.: US11768559Application Date: 2007-06-26
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Publication No.: US08010875B2Publication Date: 2011-08-30
- Inventor: Alan G. Gara , Dong Chen , Paul W. Coteus , William T. Flynn , James A. Marcella , Todd Takken , Barry M. Trager , Shmuel Winograd
- Applicant: Alan G. Gara , Dong Chen , Paul W. Coteus , William T. Flynn , James A. Marcella , Todd Takken , Barry M. Trager , Shmuel Winograd
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Daniel P. Morris, Esq.
- Main IPC: G06F11/10
- IPC: G06F11/10

Abstract:
A method and system are disclosed for detecting memory chip failure in a computer memory system. The method comprises the steps of accessing user data from a set of user data chips, and testing the user data for errors using data from a set of system data chips. This testing is done by generating a sequence of check symbols from the user data, grouping the user data into a sequence of data symbols, and computing a specified sequence of syndromes. If all the syndromes are zero, the user data has no errors. If one of the syndromes is non-zero, then a set of discriminator expressions are computed, and used to determine whether a single or double symbol error has occurred. In the preferred embodiment, less than two full system data chips are used for testing and correcting the user data.
Public/Granted literature
- US20090006899A1 ERROR CORRECTING CODE WITH CHIP KILL CAPABILITY AND POWER SAVING ENHANCEMENT Public/Granted day:2009-01-01
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