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| DF | CLASS NOTES | |
| 1 | DF | APPLICATIONS |
| 2 | DF | .~ Control |
| 3 | DF | .~ Counting on an object, areas having alternating physical properties (e.g., counting lines on grid, teeth on gear, windings on coil) |
| 4 | DF | .~ Betting on the outcome of an event; Totalizers |
| 5 | DF | .~ Game or sport |
| 6 | DF | .~ Counting animate or inanimate entities |
| 7 | DF | .~.~ Coins |
| 8 | DF | .~.~ Flat articles (e.g., sheet, bill, ticket) |
| 9 | DF | .~.~ Vehicles |
| 10 | DF | .~.~ Field of view contains plural entities or entities scanned plural times (e.g., microscopic particles) |
| 11 | DF | .~.~.~ Including particle size determination variations |
| 12 | DF | .~.~.~ Counting by detecting electrical impedance variations |
| 13 | DF | .~ Registering counts for different categories (e.g., accounting) |
| 14 | DF | .~.~ Where the different categories represent monetary amounts (e.g., wages, charges) |
| 15 | DF | .~ Counting based on number of times machine or apparatus operates |
| 16 | DF | .~ Determining machine or apparatus operating time or monitoring machine, apparatus or operation |
| 17 | DF | .~ Position determining |
| 18 | DF | .~.~ Of flat flexible strip (e.g., tape) |
| 19 | DF | .~ Measuring or testing |
| 20 | DF | .~.~ Time combined with measurement of another parameter |
| 21 | DF | .~.~ Fluid flow |
| 22 | DF | .~.~ Weight |
| 23 | DF | .~.~ Acceleration |
| 24 | DF | .~.~ Dimension |
| 24.1 | DF | .~.~.~ Distance and Powered Vehicle (e.g., odometer) |
| 24.2 | DF | .~.~.~ Distance and Human Activity (e.g., pedometer, nonpowered golf carts) |
| 25 | DF | .~.~ Temperature |
| 26 | DF | .~ Including memory |
| 27 | DF | SYSTEMS |
| 28 | DF | .~ Identifying or correcting improper counter operation (e.g., error checking, monitoring; preventing or correcting improper counter operation) |
| 29 | DF | .~.~ Testing or calibrating the counter |
| 30 | DF | .~.~ Preventing an inaccurate count as a result of an external condition |
| 31 | DF | .~.~.~ Automatic preset |
| 32 | DF | .~.~.~ Power failure |
| 33 | DF | .~ Using particular code or particular counting sequence |
| 34 | DF | .~.~ Minimum change code (e.g., Gray code) |
| 35 | DF | .~.~ Excess three code |
| 36 | DF | .~.~ Biquinary code |
| 37 | DF | .~ Sequential readout of plural counters or sequential sampling of inputs to a counter |
| 38 | DF | .~ Plug in counter |
| 39 | DF | .~ Comparing counts |
| 40 | DF | .~ Nonsignificant zero elimination |
| 41 | DF | .~ Complementing a count |
| 42 | DF | .~ Converting input or output signal from or to an analogue signal |
| 43 | DF | .~ Having phase shift |
| 44 | DF | .~ Counter controlled counter |
| 45 | DF | .~ Including reversible counter |
| 46 | DF | .~ Including ring counter |
| 47 | DF | .~ Pulse multiplication or division |
| 48 | DF | .~.~ Multiplication or division by a fraction |
| 49 | DF | .~ Counter includes circuit for performing an arithmetic function |
| 50 | DF | .~ Compensation for excess or shortage of pulses |
| 51 | DF | .~ Including structure for detecting or indicating overflow condition |
| 52 | DF | .~ With programmable counter (i.e., with variable base) |
| 53 | DF | .~ With photoelectric sensor |
| 54 | DF | .~ Using shift register |
| 55 | DF | .~ Particular input circuit |
| 56 | DF | .~ Particular output circuit |
| 57 | DF | CHARGE TRANSFER DEVICE (E.G., ANALOGUE SHIFT REGISTER, CCD, BUCKET BRIGADE DEVICE) |
| 58 | DF | .~ Compensating for or preventing signal charge deterioration |
| 59 | DF | .~ With feedback |
| 60 | DF | .~ Particular input or output means |
| 61 | DF | .~ Direction and/or path flow control (e.g., by clocking or biasing, by charge splitting) |
| 62 | DF | .~.~ In charge-coupled device |
| 63 | DF | .~ Charge-coupled device |
| 64 | DF | SHIFT REGISTER |
| 65 | DF | .~ Using electromechanical relays |
| 66 | DF | .~ Asynchronous |
| 67 | DF | .~ Multirank (i.e., rows of storage units form a shift register) |
| 68 | DF | .~ Compensating for or preventing signal deterioration |
| 69 | DF | .~ Shift direction control |
| 70 | DF | .~ Particular input circuit |
| 71 | DF | .~.~ Pulse shaping |
| 72 | DF | .~.~ With feedback |
| 73 | DF | .~.~ Including logic circuit |
| 74 | DF | .~.~.~ Field-effect transistor |
| 75 | DF | .~ Particular output circuit |
| 76 | DF | .~.~ Sequential output (e.g., tapped delay line) |
| 77 | DF | .~ Particular transfer means |
| 78 | DF | .~.~ Phase clocking or synchronizing |
| 79 | DF | .~.~.~ Field-effect transistor |
| 80 | DF | .~.~ Parallel clocking |
| 81 | DF | .~.~ Logic circuit |
| 82 | DF | ELECTROMECHANICAL COUNTER |
| 83 | DF | .~ Counting or dividing chains using relays |
| 84 | DF | .~ Programmable (i.e., with variable base) |
| 85 | DF | .~ Reversible |
| 86 | DF | .~ Particular input means |
| 87 | DF | .~ Particular output means |
| 88 | DF | .~ With resetting |
| 89 | DF | .~ Rotary magnet |
| 90 | DF | .~ Stepping switch |
| 91 | DF | .~ Clutch or escapement |
| 92 | DF | .~ Pawl and rachet |
| 93 | DF | WITH SUPERCONDUCTIVE ELEMENT |
| 94 | DF | COUNTING OR DIVIDING IN INCREMENTAL STEPS (I.E., STAIRCASE COUNTER) |
| 95 | DF | .~ Charge storage (e.g., capacitor without polarization hysteresis) |
| 96 | DF | .~.~ Using auxiliary pulse generator triggered by incoming pulses |
| 97 | DF | .~ Hysteresis storage (e.g., counters using saturable magnetic core elements) |
| 98 | DF | .~ DEVICES HAVING MORE THAN TWO STABLE STATES |
| 99 | DF | .~ Beam type tube (e.g., magnetron, cathode-ray tube) |
| 100 | DF | .~ Multi-cathode gas discharge tubes |
| 101 | DF | USING BISTABLE MAGNETIC CORES OR FERROELECTRIC CAPACITORS |
| 102 | DF | USING BISTABLE ELECTRO-OPTICAL DEVICES |
| 103 | DF | COUNTING OR DIVIDING CHAINS USING GAS-FILLED TUBES |
| 104 | DF | PHASED CLOCKING |
| 105 | DF | .~ Field-effect transistor |
| 106 | DF | PARTICULAR PARALLEL GATING OR CLOCK SIGNAL |
| 107 | DF | STARTING, STOPPING, PRESETTING OR RESETTING THE COUNTER |
| 108 | DF | .~ Counter chains with a radix or base other than the number two raised to an integral power |
| 109 | DF | .~.~ Decade |
| 110 | DF | .~.~ Programmable (e.g., with mechanical or electromechanical switch means for selecting the count |
| 111 | DF | PARTICULAR INPUT CIRCUITS FOR COUNTER |
| 112 | DF | INDICATING MEANS |
| 113 | DF | .~ Using glow discharge lamps |
| 114 | DF | PARTICULAR OUTPUT CIRCUITS FOR COUNTER |
| 115 | DF | PARTICULAR TRANSFER MEANS (E.G., MASTER-SLAVE) |
| 116 | DF | .~ Including logic circuit |
| 117 | DF | .~.~ Field-effect device (e.g., JFET, IGFET, MNOS) |
| 118 | DF | PULSE COUNTING OR DIVIDING CHAINS |
| 119 | DF | .~ Using bistable regenerative trigger circuits |
| 120 | DF | .~.~ Using only semiconductors having at least three electrodes |
| 121 | DF | .~.~.~ Field-effect device (e.g., JFET, IGFET, MNOS) |
| 122 | DF | .~.~.~ Ring counter |
| 123 | DF | .~.~.~ Reversible counter |
| 124 | DF | .~.~ Ring counter |
| 125 | DF | .~.~ Reversible counter |
| 126 | DF | .~ Ring or reversible counter |
| 127 | DF | .~ Using bistable semiconductors having at least three electrodes or analogous complementary transistor circuits (e.g., avalanche transistor, SCR's) |
| 128 | DF | .~ Using bistable semiconductors having only two electrodes (e.g., tunnel diode, multilayer diode) |
| 129 | DF | PULSES CONTINUOUSLY CIRCULATED IN A CLOSED LOOP |
| 130 | DF | MISCELLANEOUS |