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Class Number: 377
Class Title: ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT
REGISTERS: CIRCUITS AND SYSTEMS
Subclass Subclass
Number Title
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)
11 ...Including particle size determination variations
12 ...Counting by detecting electrical impedance variations
13 .Registering counts for different categories (e.g., accounting)
14 ..Where the different categories represent monetary amounts
(e.g., wages, charges)
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
18 ..Of flat flexible strip (e.g., tape)
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
31 ...Automatic preset
32 ...Power failure
33 .Using particular code or particular counting sequence
34 ..Minimum change code (e.g., Gray code)
35 ..Excess three code
36 ..Biquinary code
37 .Sequential readout of plural counters or sequential sampling of
inputs to a counter
38 .Plug in counterr
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
48 ..Multiplication or division by a fraction
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)
62 ..In charge-coupled device
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
71 ..Pulse shaping
72 ..With feedback
73 ..Including logic circuit
74 ...Field-effect transistor
75 .Particular output circuit
76 ..Sequential output (e.g., tapped delay line)
77 .Particular transfer means
78 ..Phase clocking or synchronizing
79 ...Field-effect transistor
80 ..Parallel clocking
81 ..Logic circuit
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 rachett
93 WITH SUPERCONDUCTIVE ELEMENT
94 COUNTING OR DIVIDING IN INCREMENTAL STEPS (I.E., STAIRCASE
COUNTER)
95 .Charge storage (e.g., capacitor without polarization
hysteresis)
96 ..Using auxiliary pulse generator triggered by incoming pulses
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
105 .Field-effect transistor
106 PARTICULAR PARALLEL GATING OR CLOCK SIGNAL
107 STARTING, STOPPING, PRESETTING OR RESETTING THE COUNTER
108 .Counter chains with a radix or base other than the number two
raised to an integral power
109 ..Decade
110 ..Programmable (e.g., with mechanical or electromechanical
switch means for selecting the count
111 PARTICULAR INPUT CIRCUITS FOR COUNTER
112 INDICATING MEANS
113 .Using glow discharge lamps
114 PARTICULAR OUTPUT CIRCUITS FOR COUNTER
115 PARTICULAR TRANSFER MEANS (E.G., MASTER-SLAVE)
116 .Including logic circuit
117 ..Field-effect device (e.g., JFET, IGFET, MNOS)
118 PULSE COUNTING OR DIVIDING CHAINS
119 .Using bistable regenerative trigger circuits
120 ..Using only semiconductors having at least three electrodes
121 ...Field-effect device (e.g., JFET, IGFET, MNOS)
122 ...Ring counter
123 ...Reversible counter
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