Boots – shoes – and leggings
Patent
1990-07-19
1994-10-04
Shaw, Dale M.
Boots, shoes, and leggings
3649352, 375 36, G06F 1502
Patent
active
053534093
ABSTRACT:
This invention relates to circuitry for extending TTL signals from a computer to a remotely located monitor and keyboard and which uses a first signal conditioning circuit proximate the computer to generally reduce amplitude of the video signals and bias them to a selected potential, after which the signals are applied to discrete conductors of an extended cable. The cable, in three embodiments described herein, may be up to 250 feet, 400 feet, or 1,000 feet. A second signal conditioning circuit at the monitor and keyboard end of the cable receives the attenuated signals and utilizes a threshold or pair of thresholds to effect reconstruction of the video signals prior to inputting them to the monitor. Significantly, amplitude reduction or attenuation of the video signals generally reduces high frequency video noise appearing on the keyboard clock conductor of the cable, preventing keyboard errors. Additionally, line capacitance and inductance in conductors of the extended cables is utilized to further attenuate the video signals.
REFERENCES:
patent: 4622551 (1986-11-01), Kupersmith et al.
patent: 4885718 (1989-12-01), Asprey et al.
patent: 5058131 (1991-10-01), Thacker
patent: 5089886 (1992-02-01), Grandmougin
Asprey Robert R.
Shatas Remigius G.
Cybex Corporation
Meky Moustafa M.
Shaw Dale M.
LandOfFree
Computer-monitor extended range communications link does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer-monitor extended range communications link, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer-monitor extended range communications link will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-588847