Pulse or digital communications – Repeaters – Testing
Patent
1982-04-30
1984-05-15
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
375 52, 375 76, 329112, H03K 1332
Patent
active
044492235
ABSTRACT:
An eye opening monitor for a binary waveform such as provided as the video output of a demodulator. At the decision sample time, the video is compared to -V.sub.th and +V.sub.th reference voltages to determine if it falls in the range defined therebetween. If it does, a counter is reset. Because the carry-out pulses of the counter are used to produce -V.sub.th and +V.sub.th, the range defined therebetween is decreased by the additional time required to count to the carry-out after the counter is reset. The loop stabilizes with the range from -V.sub.th and +V.sub.th being quantitatively indicative of the eye opening. A voltage derived from V.sub.th is visually displayed.
REFERENCES:
patent: 3214700 (1965-10-01), Hook
patent: 3225213 (1965-12-01), Hinrichs
patent: 3509279 (1970-04-01), Martin
patent: 4034340 (1977-07-01), Sant' Agostino
Curtis Robert G.
Favaloro Caesar J.
Liskov Nathan A.
Pence Gregory L.
Chin Stephen
Clark William R.
Griffin Robert L.
Pannone Joseph D.
Raytheon Company
LandOfFree
Eye opening monitor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Eye opening monitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Eye opening monitor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-849179