Invention Grant
- Patent Title: Method and apparatus for minimizing skew between signals
- Patent Title (中): 用于最小化信号之间的偏差的方法和装置
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Application No.: US13019277Application Date: 2011-02-01
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Publication No.: US08779754B2Publication Date: 2014-07-15
- Inventor: Yan Chong , Joseph Huang , Chiakang Sung , Eric Choong-Yin Chang , Peter Boyle , Adam J. Wright
- Applicant: Yan Chong , Joseph Huang , Chiakang Sung , Eric Choong-Yin Chang , Peter Boyle , Adam J. Wright
- Applicant Address: US CA San Jose
- Assignee: Altera Corporation
- Current Assignee: Altera Corporation
- Current Assignee Address: US CA San Jose
- Agency: Womble, Carlyle, Sandridge & Rice
- Main IPC: H03K5/14
- IPC: H03K5/14 ; H03K5/13 ; H03K5/15

Abstract:
Delay associated with each of two signals along respective transmission paths is accurately measured using a delay measurement circuit that is fabricated in situ on the actual device where the circuitry for propagating the two signals is fabricated. Thus, the measured delay associated with each of the two signals is subject to the same fabrication-dependent attributes that affect the actual circuitry through which the two signals will be propagated during operation of the device. The skew between the two signals is quantified as the difference in the measured delays. Coarse and fine delay modules are defined within the transmission path of each of the two signals. Based on the measured skew between the two signals, the coarse and fine delay modules are appropriately set to compensate for the skew. The appropriately settings for the coarse and fine delay modules can be stored in non-volatile memory elements.
Public/Granted literature
- US20110221497A1 METHOD AND APPARATUS FOR MINIMIZING SKEW BETWEEN SIGNALS Public/Granted day:2011-09-15
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