Invention Grant
- Patent Title: Programmable delay circuit providing for a wide span of delays
- Patent Title (中): 可编程延迟电路提供广泛的延迟
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Application No.: US12189823Application Date: 2008-08-12
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Publication No.: US08461884B2Publication Date: 2013-06-11
- Inventor: Jyotirmaya Swain , Utpal Barman , Adarsh Kalliat , Raji Cherian , Edward L Riegelsberger
- Applicant: Jyotirmaya Swain , Utpal Barman , Adarsh Kalliat , Raji Cherian , Edward L Riegelsberger
- Applicant Address: US CA Santa Clara
- Assignee: Nvidia Corporation
- Current Assignee: Nvidia Corporation
- Current Assignee Address: US CA Santa Clara
- Main IPC: H03L7/06
- IPC: H03L7/06

Abstract:
According to an aspect of the present invention, one of multiple clock signals of different relative phases is selected based on a desired delay magnitude, and the digital values received on an input signal are then synchronized to an edge (“first edge”) of the selected clock signal to provide the digital values with the desired delay magnitude. In an embodiment, the selected clock signal can be delayed by a fine value (less than the minimum phase difference of the multiple clock signals) to provide a wide span of desired delays. An aspect of the invention provides for a synchronization circuit with reduced latency and which is substantially invariant to process, voltage and temperature (PVT) changes.
Public/Granted literature
- US20100039149A1 Programmable Delay Circuit Providing For A Wide Span Of Delays Public/Granted day:2010-02-18
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