Invention Grant
- Patent Title: Preventing glitch propagation
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Application No.: US16919375Application Date: 2020-07-02
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Publication No.: US11809989B2Publication Date: 2023-11-07
- Inventor: William James Dally
- Applicant: NVIDIA Corporation
- Applicant Address: US CA Santa Clara
- Assignee: NVIDIA Corporation
- Current Assignee: NVIDIA Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: G06N3/045
- IPC: G06N3/045 ; G06N3/084 ; G06N3/08 ; H03K3/037 ; H03K5/01 ; G06N3/063 ; G06N3/04 ; G06F1/12 ; H03K19/003 ; H03K5/00

Abstract:
When a signal glitches, logic receiving the signal may change in response, thereby charging and/or discharging nodes within the logic and dissipating power. Providing a glitch-free signal may reduce the number of times the nodes are charged and/or discharged, thereby reducing the power dissipation. A technique for eliminating glitches in a signal is to insert a storage element that samples the signal after it is done changing to produce a glitch-free output signal. The storage element is enabled by a “ready” signal having a delay that matches the delay of circuitry generating the signal. The technique prevents the output signal from changing until the final value of the signal is achieved. The output signal changes only once, typically reducing the number of times nodes in the logic receiving the signal are charged and/or discharged so that power dissipation is also reduced.
Public/Granted literature
- US20220004864A1 PREVENTING GLITCH PROPAGATION Public/Granted day:2022-01-06
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