Class   377	ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS
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APPLICATIONS

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. (1 indent ) Control

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. (1 indent ) Counting on an object, areas having alternating physical properties (e.g., counting lines on grid, teeth on gear, windings on coil)

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. (1 indent ) Betting on the outcome of an event; Totalizers

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. (1 indent ) Game or sport

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. (1 indent ) Counting animate or inanimate entities

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.. (2 indent ) Coins

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.. (2 indent ) Flat articles (e.g., sheet, bill, ticket)

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.. (2 indent ) Vehicles

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.. (2 indent ) Field of view contains plural entities or entities scanned plural times (e.g., microscopic particles)

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... (3 indent ) Including particle size determination variations

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... (3 indent ) Counting by detecting electrical impedance variations

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. (1 indent ) Registering counts for different categories (e.g., accounting)

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.. (2 indent ) Where the different categories represent monetary amounts (e.g., wages, charges)

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. (1 indent ) Counting based on number of times machine or apparatus operates

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. (1 indent ) Determining machine or apparatus operating time or monitoring machine, apparatus or operation

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. (1 indent ) Position determining

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.. (2 indent ) Of flat flexible strip (e.g., tape)

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. (1 indent ) Measuring or testing

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.. (2 indent ) Time combined with measurement of another parameter

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.. (2 indent ) Fluid flow

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.. (2 indent ) Weight

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.. (2 indent ) Acceleration

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.. (2 indent ) Dimension

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... (3 indent ) Distance and Powered Vehicle (e.g., odometer)

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... (3 indent ) Distance and Human Activity (e.g., pedometer, nonpowered golf carts)

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.. (2 indent ) Temperature

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. (1 indent ) Including memory

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SYSTEMS

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. (1 indent ) Identifying or correcting improper counter operation (e.g., error checking, monitoring; preventing or correcting improper counter operation)

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.. (2 indent ) Testing or calibrating the counter

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.. (2 indent ) Preventing an inaccurate count as a result of an external condition

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... (3 indent ) Automatic preset

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... (3 indent ) Power failure

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. (1 indent ) Using particular code or particular counting sequence

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.. (2 indent ) Minimum change code (e.g., Gray code)

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.. (2 indent ) Excess three code

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.. (2 indent ) Biquinary code

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. (1 indent ) Sequential readout of plural counters or sequential sampling of inputs to a counter

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. (1 indent ) Plug in counter

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. (1 indent ) Comparing counts

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. (1 indent ) Nonsignificant zero elimination

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. (1 indent ) Complementing a count

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. (1 indent ) Converting input or output signal from or to an analogue signal

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. (1 indent ) Having phase shift

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. (1 indent ) Counter controlled counter

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. (1 indent ) Including reversible counter

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. (1 indent ) Including ring counter

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. (1 indent ) Pulse multiplication or division

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.. (2 indent ) Multiplication or division by a fraction

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. (1 indent ) Counter includes circuit for performing an arithmetic function

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. (1 indent ) Compensation for excess or shortage of pulses

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. (1 indent ) Including structure for detecting or indicating overflow condition

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. (1 indent ) With programmable counter (i.e., with variable base)

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. (1 indent ) With photoelectric sensor

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. (1 indent ) Using shift register

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. (1 indent ) Particular input circuit

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. (1 indent ) Particular output circuit

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CHARGE TRANSFER DEVICE (E.G., ANALOGUE SHIFT REGISTER, CCD, BUCKET BRIGADE DEVICE)

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. (1 indent ) Compensating for or preventing signal charge deterioration

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. (1 indent ) With feedback

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. (1 indent ) Particular input or output means

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. (1 indent ) Direction and/or path flow control (e.g., by clocking or biasing, by charge splitting)

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.. (2 indent ) In charge-coupled device

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. (1 indent ) Charge-coupled device

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SHIFT REGISTER

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. (1 indent ) Using electromechanical relays

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. (1 indent ) Asynchronous

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. (1 indent ) Multirank (i.e., rows of storage units form a shift register)

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. (1 indent ) Compensating for or preventing signal deterioration

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. (1 indent ) Shift direction control

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. (1 indent ) Particular input circuit

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.. (2 indent ) Pulse shaping

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.. (2 indent ) With feedback

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.. (2 indent ) Including logic circuit

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... (3 indent ) Field-effect transistor

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. (1 indent ) Particular output circuit

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.. (2 indent ) Sequential output (e.g., tapped delay line)

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. (1 indent ) Particular transfer means

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.. (2 indent ) Phase clocking or synchronizing

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... (3 indent ) Field-effect transistor

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.. (2 indent ) Parallel clocking

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.. (2 indent ) Logic circuit

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ELECTROMECHANICAL COUNTER

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. (1 indent ) Counting or dividing chains using relays

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. (1 indent ) Programmable (i.e., with variable base)

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. (1 indent ) Reversible

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. (1 indent ) Particular input means

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. (1 indent ) Particular output means

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. (1 indent ) With resetting

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. (1 indent ) Rotary magnet

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. (1 indent ) Stepping switch

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. (1 indent ) Clutch or escapement

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. (1 indent ) Pawl and rachet

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WITH SUPERCONDUCTIVE ELEMENT

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COUNTING OR DIVIDING IN INCREMENTAL STEPS (I.E., STAIRCASE COUNTER)

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. (1 indent ) Charge storage (e.g., capacitor without polarization hysteresis)

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.. (2 indent ) Using auxiliary pulse generator triggered by incoming pulses

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. (1 indent ) Hysteresis storage (e.g., counters using saturable magnetic core elements)

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. (1 indent ) DEVICES HAVING MORE THAN TWO STABLE STATES

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. (1 indent ) Beam type tube (e.g., magnetron, cathode-ray tube)

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. (1 indent ) Multi-cathode gas discharge tubes

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USING BISTABLE MAGNETIC CORES OR FERROELECTRIC CAPACITORS

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USING BISTABLE ELECTRO-OPTICAL DEVICES

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COUNTING OR DIVIDING CHAINS USING GAS-FILLED TUBES

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PHASED CLOCKING

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. (1 indent ) Field-effect transistor

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PARTICULAR PARALLEL GATING OR CLOCK SIGNAL

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STARTING, STOPPING, PRESETTING OR RESETTING THE COUNTER

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. (1 indent ) Counter chains with a radix or base other than the number two raised to an integral power

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.. (2 indent ) Decade

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.. (2 indent ) Programmable (e.g., with mechanical or electromechanical switch means for selecting the count

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PARTICULAR INPUT CIRCUITS FOR COUNTER

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INDICATING MEANS

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. (1 indent ) Using glow discharge lamps

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PARTICULAR OUTPUT CIRCUITS FOR COUNTER

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PARTICULAR TRANSFER MEANS (E.G., MASTER-SLAVE)

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. (1 indent ) Including logic circuit

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.. (2 indent ) Field-effect device (e.g., JFET, IGFET, MNOS)

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PULSE COUNTING OR DIVIDING CHAINS

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. (1 indent ) Using bistable regenerative trigger circuits

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.. (2 indent ) Using only semiconductors having at least three electrodes

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... (3 indent ) Field-effect device (e.g., JFET, IGFET, MNOS)

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... (3 indent ) Ring counter

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... (3 indent ) Reversible counter

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.. (2 indent ) Ring counter

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.. (2 indent ) Reversible counter

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. (1 indent ) Ring or reversible counter

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. (1 indent ) Using bistable semiconductors having at least three electrodes or analogous complementary transistor circuits (e.g., avalanche transistor, SCR's)

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. (1 indent ) Using bistable semiconductors having only two electrodes (e.g., tunnel diode, multilayer diode)

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PULSES CONTINUOUSLY CIRCULATED IN A CLOSED LOOP

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MISCELLANEOUS

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