| Class 377 | ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS |
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![[List of Pre Grant Publications for class 377 subclass 1]](../as.gif) | ![[List of Patents for class 377 subclass 1]](../ps.gif) | 1 | APPLICATIONS |
| | 2 |  Control |
| | 3 | Counting on an object, areas having alternating physical properties (e.g., counting lines on grid, teeth on gear, windings on coil) |
| | 4 | Betting on the outcome of an event; Totalizers |
| | 5 | Game or sport |
| | 6 | Counting animate or inanimate entities |
| | 7 |  Coins |
| | 8 | Flat articles (e.g., sheet, bill, ticket) |
| | 9 | Vehicles |
| | 10 | Field of view contains plural entities or entities scanned plural times (e.g., microscopic particles) |
| | 13 | Registering counts for different categories (e.g., accounting) |
| | 15 | Counting based on number of times machine or apparatus operates |
| | 16 | Determining machine or apparatus operating time or monitoring machine, apparatus or operation |
| | 17 | Position determining |
| | 19 | Measuring or testing |
| | 20 | Time combined with measurement of another parameter |
| | 21 | Fluid flow |
| | 22 | Weight |
| | 23 | Acceleration |
| | 24 | Dimension |
| | 24.1 |  Distance and Powered Vehicle (e.g., odometer) |
| | 24.2 | Distance and Human Activity (e.g., pedometer, nonpowered golf carts) |
| | 25 | Temperature |
| | 26 | Including memory |
| | 27 | SYSTEMS |
| | 28 | Identifying or correcting improper counter operation (e.g., error checking, monitoring; preventing or correcting improper counter operation) |
| | 29 | Testing or calibrating the counter |
| | 30 | Preventing an inaccurate count as a result of an external condition |
| | 33 | Using particular code or particular counting sequence |
| | 37 | Sequential readout of plural counters or sequential sampling of inputs to a counter |
| | 38 | Plug in counter |
| | 39 | Comparing counts |
| | 40 | Nonsignificant zero elimination |
| | 41 | Complementing a count |
| | 42 | Converting input or output signal from or to an analogue signal |
| | 43 | Having phase shift |
| | 44 | Counter controlled counter |
| | 45 | Including reversible counter |
| | 46 | Including ring counter |
| | 47 | Pulse multiplication or division |
| | 49 | Counter includes circuit for performing an arithmetic function |
| | 50 | Compensation for excess or shortage of pulses |
| | 51 | Including structure for detecting or indicating overflow condition |
| | 52 | With programmable counter (i.e., with variable base) |
| | 53 | With photoelectric sensor |
| | 54 | Using shift register |
| | 55 | Particular input circuit |
| | 56 | Particular output circuit |
| | 57 | CHARGE TRANSFER DEVICE (E.G., ANALOGUE SHIFT REGISTER, CCD, BUCKET BRIGADE DEVICE) |
| | 58 | Compensating for or preventing signal charge deterioration |
| | 59 | With feedback |
| | 60 | Particular input or output means |
| | 61 | Direction and/or path flow control (e.g., by clocking or biasing, by charge splitting) |
| | 63 | Charge-coupled device |
| | 64 | SHIFT REGISTER |
| | 65 | Using electromechanical relays |
| | 66 | Asynchronous |
| | 67 | Multirank (i.e., rows of storage units form a shift register) |
| | 68 | Compensating for or preventing signal deterioration |
| | 69 | Shift direction control |
| | 70 | Particular input circuit |
| | 75 | Particular output circuit |
| | 77 | Particular transfer means |
| | 82 | ELECTROMECHANICAL COUNTER |
| | 83 | Counting or dividing chains using relays |
| | 84 | Programmable (i.e., with variable base) |
| | 85 | Reversible |
| | 86 | Particular input means |
| | 87 | Particular output means |
| | 88 | With resetting |
| | 89 | Rotary magnet |
| | 90 | Stepping switch |
| | 91 | Clutch or escapement |
| | 92 | Pawl and rachet |
| | 93 | WITH SUPERCONDUCTIVE ELEMENT |
| | 94 | COUNTING OR DIVIDING IN INCREMENTAL STEPS (I.E., STAIRCASE COUNTER) |
| | 95 | Charge storage (e.g., capacitor without polarization hysteresis) |
| | 97 | Hysteresis storage (e.g., counters using saturable magnetic core elements) |
| | 98 | DEVICES HAVING MORE THAN TWO STABLE STATES |
| | 99 | Beam type tube (e.g., magnetron, cathode-ray tube) |
| | 100 | Multi-cathode gas discharge tubes |
| | 101 | USING BISTABLE MAGNETIC CORES OR FERROELECTRIC CAPACITORS |
| | 102 | USING BISTABLE ELECTRO-OPTICAL DEVICES |
| | 103 | COUNTING OR DIVIDING CHAINS USING GAS-FILLED TUBES |
| | 104 | PHASED CLOCKING |
| | 106 | PARTICULAR PARALLEL GATING OR CLOCK SIGNAL |
| | 107 | STARTING, STOPPING, PRESETTING OR RESETTING THE COUNTER |
| | 111 | PARTICULAR INPUT CIRCUITS FOR COUNTER |
| | 112 | INDICATING MEANS |
| | 114 | PARTICULAR OUTPUT CIRCUITS FOR COUNTER |
| | 115 | PARTICULAR TRANSFER MEANS (E.G., MASTER-SLAVE) |
| | 118 | PULSE COUNTING OR DIVIDING CHAINS |
| | 119 | Using bistable regenerative trigger circuits |
| | 120 | Using only semiconductors having at least three electrodes |
| | 124 | Ring counter |
| | 125 | Reversible counter |
| | 126 | Ring or reversible counter |
| | 127 | Using bistable semiconductors having at least three electrodes or analogous complementary transistor circuits (e.g., avalanche transistor, SCR's) |
| | 128 | Using bistable semiconductors having only two electrodes (e.g., tunnel diode, multilayer diode) |
| | 129 | PULSES CONTINUOUSLY CIRCULATED IN A CLOSED LOOP |
| | 130 | MISCELLANEOUS |
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