Fluidic threshold gate |
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| 申请号 | US3643861D | 申请日 | 1969-12-02 | 公开(公告)号 | US3643861A | 公开(公告)日 | 1972-02-22 |
| 申请人 | CORNING GLASS WORKS; | 发明人 | ECKERLIN HERBERT M; | ||||
| 摘要 | A fluidic logic gate utilizing the principles of threshold logic. This type of fluidic gate, which realizes complex logical functions with fewer gates than conventional fluidic logic gates, consists basically of the following types of components: diverters or fluidic inverters which perform a selective inhibit function, passive summing junctions, a proportional fluid amplifier and a threshold biased bistable fluid amplifier. | ||||||
| 权利要求 | 1. A fluidic threshold gate for generating a plurality of logical functions comprising a proportional fluid amplifier having at Least one control input passage and at least one outlet passage, first input terminal means for receiving a first plurality of fluid signals, first passive summing means having a plurality of input passages and an output passage which is connected to said at least one control input passage of said proportional fluid amplifier, said summing means providing a fluid signal that is proportional to the sum of the fluid signals applied to the input passages thereof, coupling means for connecting said input terminal means to said plurality of summing means input passages, respectively, a first bistable fluid amplifier having first and second opposed control input passages and at least one outlet passage, said at least one outlet passage of said proportional fluid amplifier being connected to said first control input passage, and means for connecting a fluid bias pressure to said second control input passage, the particular logical function performed by said gate depending upon said fluid bias pressure. 2. A fluidic threshold gate in accordance with claim 1 wherein said proportional fluid amplifier includes a second control input passage disposed in opposition to said at least one control input passage, said threshold gate further comprising general inhibitory means connected to said second input passage for supplying an inhibitory fluid signal to said proportional fluid amplifier in opposition to the sum of said first plurality of fluid signals. 3. A fluidic threshold gate in accordance with claim 2 wherein said general inhibitory means includes second input terminal means for providing a second plurality of fluid signals, and second passive summing means having a plurality of input passages to which said second input terminal means are connected and an output passage which is connected to said second control input passage of said proportional fluid amplifier, said second summing means providing a fluid signal that is proportional to the sum of said second plurality of fluid signals. 4. A fluidic threshold gate in accordance with claim 1 wherein said coupling means includes weighting means connected to said first input terminal means for imparting discrete weights to said first plurality of fluid signals. 5. A fluidic threshold gate in accordance with claim 1 wherein said coupling means includes means for selectively inhibiting any of said first plurality of fluid signals. 6. A fluidic threshold gate in accordance with claim 5 wherein said coupling means further includes weighting means connected to said first input terminal means for imparting discrete weights to said first plurality of fluid signals. 7. A fluidic threshold gate in accordance with claim 6 wherein said proportional fluid amplifier comprises a second control input passage disposed in opposition to said at least one control input passage, said threshold gate further comprising general inhibitory means connected to said second input passage for supplying an inhibitory fluid signal to said proportional amplifier in opposition to said first plurality of fluid signals. 8. A fluidic threshold gate in accordance with claim 7 wherein said general inhibitory means includes second input terminal means for providing a second plurality of fluid signals, and second passive summing means having a plurality of input passages to which said second input terminal means are connected and an output passage which is connected to said second control input passage of said proportional fluid amplifier, said second summing means providing a fluid signal that is proportional to the sum of said second plurality of fluid signals. 9. A fluidic threshold gate in accordance with claim 8 which further comprises a second bistable fluid amplifier having first and second opposed control input passages and at least one outlet passage, said at least one outlet passage of said proportional fluid amplifier being connected to said first control input passage of said second bistable fluid amplifier and means for connecting a fluid bias pressure to said second control input passage of said second bistable fluid amplifier, the bias pressure applied to said second bistable fluid amplifier being different from that applied to said first bistable fluid amplifier. 10. A fluidic threshold gate in accordance with claim 9 wherein said weighting means comprises monostable fluid amplifier means having a control input, a stable outlet passage and an unstable outlet passage, said control input being connected to said input terminal means and said unstable outlet passage being connected to said selective inhibit means. 11. A fluidic threshold gate in accordance with claim 1 which further comprises a second bistable fluid amplifier having first and second opposed control input passages and at least one outlet passage, said at least one outlet passage of said proportional fluid amplifier being connected to said first control input passage of said second bistable fluid amplifier and means for connecting a fluid bias pressure to said second control input passage of said second bistable fluid amplifier, the bias pressure applied to said second bistable fluid amplifier being different from that applied to said first bistable fluid amplifier. |
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