WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

G06G　ANALOGUE COMPUTERS (analogue optical computing devices G06E 3/00)

G06G 1/00 Hand manipulated computing devices (planimeters G01B 5/26)

G06G 1/0005 ・{characterised by a specific application}

G06G 1/001 ・・{for medical purposes, for biological purposes}

G06G 1/0015 ・・{for computing periodic phenomena e.g. fertility periods}

G06G 1/0021 ・・{for civil engineering}

G06G 1/0026 ・・{for machining}

G06G 1/0031 ・・{for hydraulics}

G06G 1/0036 ・・{for electricity, for electronics}

G06G 1/0042 ・・{for optics, for photography}

G06G 1/0047 ・・{for printing}

G06G 1/0052 ・・{for air navigation or sea navigation}

G06G 1/0057 ・・{for gun laying, for bomb aiming}

G06G 1/0063 ・・{for calculating fuel consumption}

G06G 1/0068 ・・{for conversion from one unit system to another, e.g. from British to metric}

G06G 1/0073 ・・{for commerce, bank or invoicing}

G06G 1/0078 ・・・{for calculating interests}

G06G 1/0084 ・・・{for calculating earned incomes}

G06G 1/0089 ・・・{for calculating taxes}

G06G 1/0094 ・・{for trigonometric computations}

G06G 1/02 ・Devices in which computing is effected by adding, substracting, or comparing lengths of parallel or concentric graudated scales {(G06G 1/0005 takes precedence)}

G06G 1/025 ・・{decimal point positioning devices}

G06G 1/04 ・・characterised by construction (G06G 1/10 takes precedence)

G06G 1/045 ・・・{with scales borne by bands}

G06G 1/06 ・・・with rectilinear scales, e.g. slide rule

G06G 1/065 ・・・・{construction of the cursor}

G06G 1/08 ・・・with circular or helical scales

G06G 1/085 ・・・・{borne by a cylinder}

G06G 1/10 ・・characterised by the graduation

G06G 1/105 ・・・{linear graduations}

G06G 1/12 ・・・Logarithmic graduations, e.g. for multiplication

G06G 1/14 ・in which a straight or curved line has to be drawn from given points on one or more input scales to one or more points on a result scale

G06G 1/16 ・in which a straight or curved line has to be drawn through related points on one or more families of curves

G06G 3/00 Devices in which the computing operation is performed mechanically (G06G 1/00 takes precedence)

G06G 3/02 ・for performing additions or subtractions, e.g. differential gearing

G06G 3/04 ・for performing multiplication or divisions, e.g. variable-ratio gearing

G06G 3/06 ・for evaluating functions by using cams and cam followers

G06G 3/08 ・for integrating or differentiating, e.g. by wheel and disc

G06G 3/10 ・for simulating specific processes, systems, or devices

G06G 5/00 Devices in which the computing operation is performed by means of fluid-pressure elements (such elements in general F15C)

G06G 7/00 Devices in which the computing operation is performed by varying electric or magnetic quantities

G06G 7/02 ・Details not covered by G06G 7/04 to G06G 7/10, {e.g. monitoring, construction, maintenance}

G06G 7/04 ・input or output devices (graph readers G06K 11/00; function plotters, co-ordinate plotters G06K 15/22, {G09G 3/001})

G06G 7/06 ・Programming arrangements, e.g. plugboard for interconnecting functional units of the computer; Digital programming {hybrid computers G06J}

G06G 7/10 ・Power supply arrangements

G06G 7/12 ・Arrangements for performing computing operations, e.g. operational amplifiers (amplifiers in general H03F; {adapted for telemeasuring or for indicating or recording the results of the measurement G01D 1/10, G01D 1/16; for fuzzy computing G06N 7/02})

G06G 7/122 ・・for optimisation, e.g. least square fitting, linear programming, critical path analysis, gradient method

G06G 7/14 ・・for addition or subtraction (of vector quantities G06G 7/22){computing the average by addition; differential amplifiers H03F 3/45}

G06G 7/16 ・・for multiplication or division {G06G 7/19 and G06G 7/24 take precedence measuring electric power G01R 21/00}

G06G 7/161 ・・・with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form {pulse modulators H03K 7/00}

G06G 7/162 ・・・using galvano- magnetic effects, e.g. Hall effect; using similar magnetic effects

G06G 7/163 ・・・using a variable impedance controlled by one of the input signals, variable amplification or transfer function {G06G 7/161, G06G 7/162 take precedence}

G06G 7/164 ・・・using means for evaluating powers, e.g. quarter square multiplier (evaluating powers G06G 7/20)

G06G 7/18 ・・for integration or differentiation; for forming integrals (G06G 7/19 takes precedence)

G06G 7/1806 ・・・{with respect to a variable other than time}

G06G 7/1813 ・・・{using electrochemical elements, e.g. solion}

G06G 7/182 ・・・using magnetic elements

G06G 7/184 ・・・using capacitative elements

G06G 7/186 ・・・・using an operational amplifier comprising a capacitor or a resistor in the feedback loop

G06G 7/1865 ・・・・・{with initial condition setting}

G06G 7/188 ・・・using electromechanical elements

G06G 7/19 ・・for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions (Fourier or spectrum analysis G01R 23/16; sound analysis or synthesis G10L)

G06G 7/1907 ・・・{using charge transfer devices}

G06G 7/1914 ・・・{using a magnetic medium, a linear filter}

G06G 7/1921 ・・・{for forming Fourier integrals, harmonic analysis and synthesis (spectrum analysis G01R 23/00; G01R 7/195 and G01R 7/19C take precedence)}

G06G 7/1928 ・・・{for forming correlation integrals; for forming convolution integrals (G06G 7/195, G06G 7/1907 and G06G 7/1914 take precedence)}

G06G 7/1935 ・・・・{by converting at least one the input signals into a two level signal, e.g. polarity correlators}

G06G 7/1942 ・・・{for forming other integrals of product, e.g. orthogonal functions, Laplace, Laguerre, Walsh, Hadamard, Hilbert (G06G 7/195, G06G 7/1907 and G06G 7/1914 take precedence)}

G06G 7/195 ・・・using electro- acoustic elements

G06G 7/20 ・・for evaluating powers, roots, polynomes, mean square values, standard deviation (G06G 7/122, G06G 7/28 take precedence; gamma correction in television systems H04N 5/20, H04N 9/69)

G06G 7/22 ・・for evaluating trigonometric functions; for conversion of co-ordinates; for computations involving vector quantities (trigonometric computations using simultaneous equations G06G 7/34{for computations in the complex plane; G06G 7/20, G06G 7/28 take precedence; resolvers 74C5A1})

G06G 7/24 ・・for evaluating logarithmic or exponential functions, e.g. hyperbolic functions {for multiplication, division or for evaluating powers or roots using logarithmic functions; gamma correction in television systems H04N 5/20, H04N 9/69}

G06G 7/25 ・・for discontinuous functions, e.g. backlash, dead zone, limiting absolute value or peak value {measuring the maximum value of currents or voltages G01R 19/30}

G06G 7/26 ・・Arbitrary function generators {using Fourier series or other orthogonal functions G06G 7/19; using curve followers G06K 11/02}

G06G 7/28 ・・・for synthesising functions by piece-wise approximation

G06G 7/30 ・・for interpolation or extrapolation (G06G 7/122 takes precedence)

G06G 7/32 ・・for solving of equations {or inequations; for matrices}

G06G 7/34 ・・・of simultaneous equations (G06G 7/122 takes precedence)

G06G 7/36 ・・・of single equations of quadratic or higher degree (G06G 7/22, G06G 7/24 take precedence)

G06G 7/38 ・・・of differential or integral equations

G06G 7/40 ・・・・of partial differential equations {of field or wave equations}(simulating specific devices G06G 7/48)

G06G 7/42 ・・・・・using electrolytic tank

G06G 7/44 ・・・・・using continuous medium, current-sensitive paper

G06G 7/46 ・・・・・using discontinuous medium, e.g. resistance network

G06G 7/48 ・Analogue computers for specific processes, systems or devices, e.g. simulators

G06G 7/485 ・・{for determining the trajectory of particles, e.g. of electrons (measurement performed on radiation beams G01T 1/29; processing or analysing tracks of particles G01T 5/02)}

G06G 7/50 ・・for distribution networks, e.g. for fluids (G06G 7/62 takes precedence)

G06G 7/52 ・・for economic systems; for statistics (G06G 7/122, G06G 7/19 take precedence)

G06G 7/54 ・・for nuclear physics, e.g. nuclear reactors, radioactive fall {(processing of scintigraphic or other radio-isotope data G01T 1/1647, G01T 1/2992)}

G06G 7/56 ・・for heat flow (G06G 7/58 takes precedence)

G06G 7/57 ・・for fluid flow (G06G 7/50 takes precedence); {for distribution networks}

G06G 7/58 ・・for chemical processes (G06G 7/75 takes precedence); {for physico-chemical processes; for metallurgical processes}

G06G 7/60 ・・for living beings, e.g. their nervous systems; {for problems in the medical field}

G06G 7/62 ・・for electric systems or apparatus {(G06G 7/78 takes precedence)}

G06G 7/625 ・・・for filters; for delay lines ({measuring characteristics of electric networks, e.g. plotting Nyquist diagram G01R 27/28})

G06G 7/63 ・・・for power apparatus, e.g. motors, or supply distribution networks {(for control systems of electric power apparatus G06G 7/66)}

G06G 7/635 ・・・・for determining the most economical distribution in power systems

G06G 7/64 ・・for non-electric machines, e.g. turbine

G06G 7/66 ・・for control systems {(for optimisation G06G 7/122)}

G06G 7/68 ・・for civil engineering structures, e.g. beam, strut, girder, {elasticity computation}

G06G 7/70 ・・for vehicles, e.g. to determine permissible loading of ships, {centre of gravity, necessary fuel}

G06G 7/72 ・・・Flight simulator (link trainers G09B 9/00)

G06G 7/75 ・・for component analysis, e.g. of mixtures, of colours (G06G 7/122 takes precedence; {gas chromatography G01N 30/00})

G06G 7/76 ・・for traffic

G06G 7/78 ・・for direction-finding, locating, distance or velocity measuring, or navigation systems

G06G 7/80 ・・for gunlaying; for bomb aiming; for guiding missiles

G06G 99/00 Subject matter not provided for in other groups of this subclass