Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1989-09-11
1992-06-09
Fleming, Michael R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324656, 324712, 324713, 340660, 340664, 36424295, 36492796, G06F 1300, G01R 1700
Patent
active
051214822
ABSTRACT:
The invented circuit includes an I/O driver capable of supplying current to an I/O connector, a current detection circuit that may include a current limit resistor and a differential amplifier, a comparator to compare the level of current to a predetermined level and to produce an output signal based thereon, and a translator to convert the output signal from the comparator into a transistor-transistor logic signal. The device that includes the invented circuit then interprets the logic signal as identifying either a serial I/O system or a LAN I/O system.
REFERENCES:
patent: 3978402 (1976-08-01), Ryder
patent: 4008405 (1977-02-01), Neumann et al.
patent: 4041288 (1977-08-01), Conway et al.
patent: 4575714 (1986-03-01), Rummel
patent: 4644194 (1987-02-01), Birrittella et al.
patent: 4647912 (1987-03-01), Bates et al.
patent: 4841177 (1989-06-01), Sugiyama et al.
patent: 4983858 (1991-01-01), Ishikawa
Auve Glenn A.
Fleming Michael R.
Hewlett--Packard Company
LandOfFree
Circuit and method for automatic input-output configuration thro does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit and method for automatic input-output configuration thro, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method for automatic input-output configuration thro will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1811859