- Patent Title: Techniques for detecting and correcting errors on a ring oscillator
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Application No.: US15056144Application Date: 2016-02-29
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Publication No.: US09774316B2Publication Date: 2017-09-26
- Inventor: Nelson Gaspard , Yanzhong Xu
- Applicant: Altera Corporation
- Applicant Address: US CA San Jose
- Assignee: Altera Corporation
- Current Assignee: Altera Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H03K3/03
- IPC: H03K3/03 ; H03K3/66 ; H03K3/013 ; G11C11/419 ; H03B5/12 ; H03L7/085

Abstract:
A circuit may include a ring oscillator circuit and monitoring circuitry. The ring oscillator circuit has a group of inverters in a loop, whereby the group of inverters includes first, second, and third output nodes. The monitoring circuitry may monitor for error events in a signal that has passed through the inverters from any one of the first, second, or third output nodes, and may generate first and second monitoring circuitry outputs. The circuit may further include an error correction circuit that produces an error correction output based on the first and second monitoring circuitry outputs. Accordingly, the monitoring circuitry may generate first and second updated monitoring circuitry outputs based on the error correction output. The first and second updated monitoring circuitry outputs may be logically combined using a logic circuit to reset the signal that has passed through the loop.
Public/Granted literature
- US20170250681A1 TECHNIQUES FOR DETECTING AND CORRECTING ERRORS ON A RING OSCILLATOR Public/Granted day:2017-08-31
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