Invention Grant
- Patent Title: Dynamic power noise event counter
- Patent Title (中): 动态功率噪声事件计数器
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Application No.: US12606534Application Date: 2009-10-27
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Publication No.: US08013669B2Publication Date: 2011-09-06
- Inventor: Shingo Suzuki , Toshinari Takayanagi
- Applicant: Shingo Suzuki , Toshinari Takayanagi
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Lawrence J. Merkel; Erik A. Heter
- Main IPC: G05F1/10
- IPC: G05F1/10
Abstract:
An apparatus and method for detecting noise in a power supply voltage. A circuit may include a voltage generation unit coupled to receive a power supply voltage, and a detection unit. The voltage generation unit may generate first and second voltages using the power supply voltage, and may vary the relationship therebetween responsive to fluctuations in the power supply voltage. A detection unit may detect the variations in the relationship between the first and second voltages that result from fluctuations in the power supply voltage. Responsive to detecting the variations, the detection unit may generate pulses to be provided to a counter. The counter may update a count value responsive to receiving pulses.
Public/Granted literature
- US20110096891A1 Dynamic Power Noise Event Counter Public/Granted day:2011-04-28
Information query
IPC分类:
