US PATENT SUBCLASS 713 / 500
CLOCK, PULSE, OR TIMING SIGNAL GENERATION OR ANALYSIS

Current as of: June, 1999
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713 /   HD   ELECTRICAL COMPUTERS AND DIGITAL PROCESSING SYSTEMS: SUPPORT

500CLOCK, PULSE, OR TIMING SIGNAL GENERATION OR ANALYSIS {3}
501  DF  .~> Multiple or variable intervals or frequencies
502  DF  .~> Counting, scheduling, or event timing
503  DF  .~> Correction for skew, phase, or rate

DEFINITION

Classification: 713/500

CLOCK, PULSE, OR TIMING SIGNAL GENERATION OR ANALYSIS:

(under the class definition) Subject matter including generation, division or distribution of a clock signal, pulse signal, or timing signal in the digital data processing system from one or more sources into a group of continuous and successive time increments; or including event timing and counting, or correction of a clock signal, pulse signal, or timing signal.

(1) Note. This subclass accepts signal generators producing several clock or timing signals, signal generators with changeable or programmable intervals, and generation of signals using a delay function or device. Particular components such as delay devices, per se, are classified elsewhere.

(2) Note. Mere nominal recitation of a computer or digital data processing system in combinations with a clock or timing generation circuit is not proper for this subclass. Timing generation circuits, per se, such as, oscillators, electrical pulse counters, pulse dividers, or shift register systems are classified elsewhere.

SEE OR SEARCH THIS CLASS, SUBCLASS:

400, for synchronization of clock or timing signals, data, or pulses in a digital data processing system.

SEE OR SEARCH CLASS

326, Electronic Digital Logic Circuitry,

93+, for clocking or synchronizing of logic stages or gates. 327, Miscellaneous Active Electrical Nonlinear Devices,

Circuits, and Systems,

100+, for signal converting, shaping, or generating, particularly subclass 164 for generating rectangular or pulse waveform having random characteristic, subclasses 165+ for regenerating or restoring rectangular or pulse waveform and subclasses 291+ for clock or pulse waveform generating.

331, Oscillators, appropriate subclasses for oscillator, per se.

368, Horology: Time Measuring Systems or Devices, appropriate subclasses.

375, Pulse or Digital Communications, appropriate subclasses.

377, Electrical Pulse Counters, Pulse Dividers, or Shift Registers: Circuits and Systems appropriate subclasses.

702, Data Processing: Measuring, Calibrating or Testing,

124+, for signal generator or waveform shaping in a testing system, particularly subclass 125 for timing signal generator in a testing system.