US PATENT SUBCLASS 327 / 100
SIGNAL CONVERTING, SHAPING, OR GENERATING

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

100SIGNAL CONVERTING, SHAPING, OR GENERATING {29}
101  DF  .~> Converting input current or voltage to output frequency
102  DF  .~> Converting input frequency to output current or voltage
103  DF  .~> Converting input voltage to output current or vice versa
104  DF  .~> Converting, per se, of an AC input to corresponding DC at an unloaded output
105  DF  .~> Synthesizer {2}
108  DF  .~> Current driver {3}
113  DF  .~> Frequency or repetition rate conversion or control {3}
124  DF  .~> By periodic switching (e.g., chopper, etc.)
125  DF  .~> Generating parabolic or hyperbolic output
126  DF  .~> Generating staircase output {2}
129  DF  .~> Generating sinusoidal output
130  DF  .~> Generating trapezoidal output
131  DF  .~> Generating sawtooth or triangular output {9}
141  DF  .~> Synchronizing {7}
164  DF  .~> Generating rectangular (e.g., clock, etc.) or pulse waveform having random characteristic (e.g., random width, etc.)
165  DF  .~> Regenerating or restoring rectangular (e.g., clock, etc.) or pulse waveform {4}
170  DF  .~> Slope control of leading or trailing edge of rectangular (e.g., clock, etc.) or pulse waveform
171  DF  .~> Output pulses having opposite polarities
172  DF  .~> Rectangular (e.g., clock, etc.) or pulse waveform width control {5}
178  DF  .~> Rectangular (e.g., clock, etc.) or pulse waveform amplitude control {2}
181  DF  .~> Electromagnetic pulse forming
182  DF  .~> Delay line or capacitor storage element charged or discharged through or by a relaxation oscillator type circuit to form pulse
183  DF  .~> Delay line or capacitor storage element charges or discharges through a tube to form pulse
184  DF  .~> Rectangular (e.g., clock, etc.) or pulse waveform generating by conversion from input AC (e.g., sine, etc.) wave
185  DF  .~> Particular stable state circuit (e.g., tristable, etc.) {12}
231  DF  .~> Phase shift by less than period of input {7}
261  DF  .~> Having specific delay in producing output waveform {7}
291  DF  .~> Clock or pulse waveform generating {11}
306  DF  .~> Amplitude control {5}

DEFINITION

Classification: 327/100

SIGNAL CONVERTING, SHAPING, OR GENERATING:

(under the class definition) Subject matter wherein (a) an inherent input signal parameter such as phase, frequency, amplitude, or current is modified, maintained at some value, or changed to an entirely different parameter, (b) an input signal having a particular waveform is modified into an output signal having a partially or completely different waveform, or (c) an output signal of specified waveform is produced.

(1) Note. An example of the second type above would be sine wave to triangular wave modification.

(2) Note. This subclass and indented subclasses do not include single energy systems for conversion wherein a single electrical source circuit is coupled to a single electrical load circuit and which involves current, phase or frequency conversion, and wherein the energy in the load is supplied solely by the source. Such systems in general are classified in Class 363, Electric Power Conversion Systems, appropriate subclasses. See References to Other Classes in Class 363 for other classes providing for conversion systems.

(3) Note. Excluded from this subclass and indented subclasses are free running signal generators which are classified, for example, in Class 331.

(4) Note. Bias circuits of the pulsing type which establish device operating points are classified below with the bias circuits.

SEE OR SEARCH THIS CLASS, SUBCLASS:

334+, for circuits whose output is proportional to a mathematical function of the input.

544, for bias circuits of the pulsating type. 596, for miscellaneous circuits including a free running oscillatory type circuit.

SEE OR SEARCH CLASS

128, Surgery,

2.06, for electrocardiographs involving timing and subclasses 303.13+ for instruments for application of electricity to the human body involving timing.

236, Automatic Temperature and Humidity Regulation,

46, for regulation systems involving timing.

237, Heating Systems,

2+, for systems for automatic control of a heating system.

307, Electrical Transmission or Interconnection Systems,

401+, for nonlinear reactor systems (e.g., saturable) and subclasses 106+ for a class appropriate wave shape determinative or pulse producing system. See also appropriate subclasses for plural source or load voltage magnitude and phase control.

315, Electric Lamp and Discharge Devices: Systems, 364+, for cathode ray deflecting circuits involving timing and subclasses 209+ for systems involving a periodic switch in the supply circuit of a gaseous discharge tube.

318, Electricity: Motive Power Systems,

445, for systems of automatically starting and/or stopping a motor with timing, subclasses 606+ for electric motor position servomechanisms with phase or frequency control, and subclass 683 for particular phase detectors used in such a servomechanism.

320, Electricity: Battery or Capacitor Charging or Discharging,

166+, for charging or discharging a capacitor, per se.

322, Electricity: Single Generator Systems,

17+, especially indented subclass 18 for systems involving time delay means in the control of a generator or driving.

323, Electricity: Power Supply or Regulation Systems,

212+, for power supply phase control comprising an electron tube and wherein, in general, the tube does not act as an active element.

324, Electricity: Measuring and Testing,

83+, for phase indicators, subclasses 78+, particularly subclass 82 for measuring or testing the frequency of cyclic current or voltage by phase comparison, and subclasses 160+ for systems for measuring time or speed. 330, Amplifiers,

107, for amplifiers with phase shifting means in a feedback path.

331, Oscillators,

37+, for systems including an oscillator or oscillators generating at least two different frequencies with a signal combining device (e.g., mixer, modulator, etc.) having a signal input circuit and a signal output circuit where the oscillator or oscillators are connected to the signal input circuit of the combining device and the device output comprises the sum or difference frequency of the outputs of the oscillator or oscillators.

332, Modulators, appropriate subclasses for systems including beating a source of carrier frequency with a signal wave which varies arbitrarily in a continuous manner in accordance with some intelligence.

333, Wave Transmission Lines and Networks,

18, 23, and 138+ for delay networks comprising passive elements and subclasses 138+. See (1) Note, above.

340, Communications: Electrical,

870.24, for telemetering systems receiving information by pulse trains with length or spacing varied with respect to time.

341, Coded Data Generation or Conversion,

50+, for systems converting an input consisting of a coded arrangement representing a particular group of values to an output consisting of another coded arrangement.

348, Television, 469+, for systems generating or formatting a television signal.

361, Electricity: Electrical Systems and Devices,

195+, for time delay networks which control a relay load switching operation.

363, Electric Power Conversion Systems, appropriate subclasses for single energy conversion systems wherein a single electrical source circuit is coupled to a single electrical load circuit. See (2) Note, above.

455, Telecommunications,

313+, for mixer or converters in radio receiver circuits.

See (3) Note, above.