US Patent 7868664 Generating a trigger from a differential signal

Patent 7868664 was granted and assigned to Tektronix on January, 2011 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Tektronix

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7868664

Date of Patent

January 11, 2011

Patent Application Number

12355641

Date Filed

January 16, 2009

Patent Primary Examiner

‌

Jeffrey S Zweizig

Patent abstract

A trigger circuit generates a trigger signal when a differential input signal crosses a differential threshold voltage level. A first side of the differential input signal is applied to a first terminal of a first load termination resistor. A second side of the differential signal is applied to a first terminal of a second load termination resistor. A first side of the differential threshold voltage level is applied to a second terminal of the first load termination resistor. A second side of the differential threshold voltage level is applied to a second terminal of the second load termination resistor. A comparator generates the trigger signal when a voltage level at the first terminal of the first resistor exceeds a voltage level at the first terminal of the second resistor.

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