Patent US3598922A successfully refreshed from Google Patents.
US3598922A
Expired / Lapsed
US
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Multiplexer control apparatus
Assignee: Honeywell Inc
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Filing: 1967-08-02
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Granted: 1971-08-10
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Expires: 1987-08-02
Abstract
Abstract A multiplex fader apparatus for switching between various control system input signals without producing unwanted transients at the output of the system.
Inventors
- 👤 Frank W Ainsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:32
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/10; H04J3/04; H04J3/047
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
229 words
Multiplexer apparatus for changing from one input signal to another, comprising: first electrical means for receiving a plurality of input signals and providing therefrom sequential output signals selected from the plurality of input signals; second electrical means, having two output terminals, for receiving the sequential output signals from said first electrical means and alternately switching successive output signals from said first electrical means from a first output terminal to a second output terminal whenever the selected sequential output signal from the plurality of input signals is no longer supplied to said second electrical means; third electrical means, having an output, for receiving and storing an input signal from the first output terminal of said seconD electrical means; fourth electrical means, having an output, for receiving and storing input signal from the second output terminal of said second electrical means; and signal summing means including output means, said summing means continuously connected for receiving input signals from the outputs of said third electrical means and said fourth electrical means and producing an output signal equal to the sum of the signals received from said third electrical means and said fourth electrical means whereby when a transition is made from one input signal to a different input signal the output signal changes gradually from the level corresponding to said one input signal to that level corresponding to said different input signal.
Claim 2
Dependent Claim
229 words
Multiplexer apparatus for changing from one input signal to another, comprising: first electrical means for receiving a plurality of input signals and providing therefrom sequential output signals selected from the plurality of input signals; second electrical means, having two output terminals, for receiving the sequential output signals from said first electrical means and alternately switching successive output signals from said first electrical means from a first output terminal to a second output terminal whenever the selected sequential output signal from the plurality of input signals is no longer supplied to said second electrical means; third electrical means, having an output, for receiving and storing an input signal from the first output terminal of said seconD electrical means; fourth electrical means, having an output, for receiving and storing input signal from the second output terminal of said second electrical means; and signal summing means including output means, said summing means continuously connected for receiving input signals from the outputs of said third electrical means and said fourth electrical means and producing an output signal equal to the sum of the signals received from said third electrical means and said fourth electrical means whereby when a transition is made from one input signal to a different input signal the output signal changes gradually from the level corresponding to said one input signal to that level corresponding to said different input signal.
Claim 3
Dependent Claim
48 words
Multiplexer apparatus as in claim 1, wherein said third electrical means and said fourth electrical means include individual energy storage means providing a signal to said summing means during the period of transition from a one selected input signal of the series to a subsequently selected input signal.
Claim 4
Dependent Claim
26 words
Multiplexer apparatus as in claim 1 wherein the switching means in the second electrical means comprise two semiconductors each having a selectively controlled conduction regulating electrode.
Claim 5
Dependent Claim
62 words
Multiplexer apparatus as in claim 1, wherein said third electrical means and said fourth electrical means each comprise a separate capacitor connected to be charged by a source of input signal to a voltage equal to that appearing at the output terminal of said second electrical means and a separate resistor connecting the capacitor to the output of the respective electrical means.
Claim 6
Dependent Claim
142 words
Multiplexer apparatus for condition control apparatus for selecting one of several input signals comprising, in combination: input signal selection means, including output means, for supplying one at a time a series of a plurality of received input signals to said output means; first and second alternate signal energy storage means having a common output to which said first and second alternate signal energy storage means are both continuously connected thru passive resistive paths; and switching means for alternately supplying successively selected input signals in said series from said selection means to said alternate energy storage means so that a last selected input signal in said series is temporarily supplied to said common output from one of said energy storage means while a previously selected input signal is also being supplied to said common output through the other of said energy storage means.
Claim 7
Dependent Claim
142 words
Multiplexer apparatus for condition control apparatus for selecting one of several input signals comprising, in combination: input signal selection means, including output means, for supplying one at a time a series of a plurality of received input signals to said output means; first and second alternate signal energy storage means having a common output to which said first and second alternate signal energy storage means are both continuously connected thru passive resistive paths; and switching means for alternately supplying successively selected input signals in said series from said selection means to said alternate energy storage means so that a last selected input signal in said series is temporarily supplied to said common output from one of said energy storage means while a previously selected input signal is also being supplied to said common output through the other of said energy storage means.
Claim 8
Dependent Claim
58 words
The multiplexer apparatus of claim 5, wherein the plurality of signals is greater than two and wherein the first and second energy storage means are responsive alternately to the successive signals in the series, one storage means receiving the odd numbered signals in the series and the other storage means receiving the even numbered signals in the series.
Claim 9
Dependent Claim
181 words
A multiplex fader circuit, comprising: switching means for selecting sequentially for transmission any signal from among a plurality of signals; first fader means, including an input and an output, for providing at its output a continuously diminishing amplitude signal when a signal is no longer supplied to its input, comprising energy storage means connected between said input means and said output means; second fader means including input means and output means, for providing at its output a continuously diminishing amplitude signal when a signal is no longer supplied to its input, comprising energy storage means connected between said input means and said output means the input means of said first and second fader means being alternately connectible to the switching means for receiving the selected signal; and summing means connected concurrently to the output means of said first fader means and said second fader means for producing an output equal to the sum of the signals received from said fader means, said switching means being connecteD to one input means following removal of the selected signal from the other input means.
Claim 10
Dependent Claim
181 words
A multiplex fader circuit, comprising: switching means for selecting sequentially for transmission any signal from among a plurality of signals; first fader means, including an input and an output, for providing at its output a continuously diminishing amplitude signal when a signal is no longer supplied to its input, comprising energy storage means connected between said input means and said output means; second fader means including input means and output means, for providing at its output a continuously diminishing amplitude signal when a signal is no longer supplied to its input, comprising energy storage means connected between said input means and said output means the input means of said first and second fader means being alternately connectible to the switching means for receiving the selected signal; and summing means connected concurrently to the output means of said first fader means and said second fader means for producing an output equal to the sum of the signals received from said fader means, said switching means being connecteD to one input means following removal of the selected signal from the other input means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |