The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 1994
Filed:
Mar. 02, 1992
John A Hengeveld, Aloha, OR (US);
Jonathan C Lueker, Portland, OR (US);
Bradford H Needham, Hillsboro, OR (US);
Burt Price, Portland, OR (US);
James Schlegel, Beaverton, OR (US);
Mehrab Sedeh, Beaverton, OR (US);
Tektronix, Inc., Wilsonville, OR (US);
Abstract
A digital data generation system including a programmable dominance RS flip-flop has a random access memory that stores a user selected sequence of test data. A pattern formatting logic circuit receives the test data and produces, for each data period, a coarsely timed candidate pulse for identifying the leading edge of an output data pulse and a coarsely timed candidate pulse for identifying the trailing edge of the output data pulse. A precision delay circuit finely tunes the timing of the candidate pulses. The finely tuned pulses are applied to an RS flip-flop circuit which can be programmed for set or reset dominance, thereby preventing an indeterminate state when a logic '1' is applied to both the set and the reset input. In the system, the flip-flop is programmed so that the most recent of the lead pulse or the trail pulse prevails.