Electric control circuit
AssigneeViennatone Gesellschaft m.b.H.
InventorNorbert Goles
Life of this patent
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Abstract
At least one comparator circuit and one timing circuit are provided so that the operation of a control element in response to the tensing of the muscles of a patient depends upon the time duration during which the patient tenses the muscle. Further timing and comparator circuits may be provided so that the rate at which the patient tenses the muscles can also influence the operation of the output control element. A reset circuit resets the timing and comparator circuits in response to alternate muscle tensings, allowing the patient free choice of any available operating condition independent of the previous operating condition.
Claims10
Control apparatus for activating at least one output control element in response to a myoelectric input signal, comprising, in combination, threshold circuit means responsive to said myoelectric input signal for furnishing a threshold output signal while said myoelectric input signal has an amplitude exceeding a predetermined amplitude;
- timing means connected to said threshold means, for furnishing a timing signal for a predetermined time interval following receipt of said threshold output signal;
- comparator means connected to said threshold circuit means and said timing circuit means for furnishing a first comparator output signal when the duration of said threshold output signal exceeds said predetermined time interval and a second comparator output signal when the duration of said threshold output signal is less than said predetermined time interval;
- and connecting means for connecting said output control element to said comparator means in such a manner that the operation thereof is dependent upon said first and second comparator output signals.
Control apparatus for controlling the operation of at least one output control element in response to a sequence of myoelectric input signals, comprising, in combination, first means responsive to said myoelectric input signals for furnishing output signals in response to first selected ones of said myoelectric input signals;
- second means responsive to said myoelectric input signals and connected to said first means, for terminating the furnishing of said output signals in response to second selected ones of said myoelectric input signals each following a corresponding one of said first selected ones of said myoelectric input signals in said sequency, whereby activation of said output control element is stopped in response to alternate ones of said myoelectric input signals.
Dependencies are inferred from the claim text.