Lines with other classes and within this classTelegraph and printing telegraph systems which include transmission or reception of a carrier are classified in Class 375 except for those systems specifically provided elsewhere, such as a spark gap and a coherer. See References to Other Classes, below. A carrier which is modulated by a continuously variable (analog) signal is classified elsewhere (See References to Other Classes, below). A device which is convertible from analog to pulse or digital may have a time related parameter (e.g., pulse width, or repetition rate) continuously variable and be classified herein. Light Wave Communication is classified elsewhere (See References to Other Classes, below), regardless of the type of modulation. Duplexing or Multiplexing systems which utilize pulse or digital information signals are classified elsewhere (See References to Other Classes, below). Code converters which may be utilized in a pulse or digital communication system, are classified elsewhere (See References to Other Classes, below). Addressing of a particular pulse receiver is classified elsewhere (See References to Other Classes, below). The combination of the subject matter of this class (375) and another art environment is generally classified with the other art environment where that environment is significant by virtue of the claimed relationship. For example: Error checking systems; Electroacoustic geophysical systems; Dynamic Magnetic Information Storage or Retrieval; Radar systems; Directive systems; Telemetering systems; Television. See References to Other Classes, below. Significantly claimed pulse or digital communication handling techniques in combination with the subject matter of 700, Data Processing: Generic Control Systems or Specific Applications; 701, Data Processing: Vehicles, Navigation, and Relative Location; 702, Data Processing: Measuring, Calibrating, or Testing; 703, Data Processing: Structural Design, Modeling, Simulation, and Emulation; 704, Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression; 705, Data Processing: Financial, Business Practice, Management, or Cost/Price Determination; 706, Data Processing: Artificial Intelligence; 707, Data Processing: Database and File Management, Data Structures, or Document Processing; 708, Electrical Computers: Arithmetic Processing and Calculating; 709, Electrical Computers and Digital Processing Systems: Multiple Computer or Process Coordinating; 710, Electrical Computers and Digital Data Processing Systems: Input/Output; 711, Electrical Computers and Digital Processing Systems: Memory; 712, Electrical Computers and Digital Processing Systems: Processing Architectures and Instruction Processing (e.g., Processors); 713, Electrical Computers and Digital Processing Systems: Support; 714, Error Detection/Correction and Fault Detection/Recovery; 716, Data Processing: Design and Analysis of Circuit or Semiconductor Mask; or 717, Data Processing: Software Development, Installation, and Management, are classified in these external classes. Remote control of a transmitter and/or receiver is classified herein; however, the remote control of a device external to a communication system is classified elsewhere. Remote control of an external device by light wave communications is classified elsewhere. See References to Other Classes, below. Electrical circuits or devices which may use pulse or digital handling techniques, but are not unique to communications, are classified in the appropriate classes. For example: Pulse characteristic discriminating, comparing or selecting. Pulse responsive selective systems; Pulse demodulation, per se; Pulse modulation converters to FM; Pulse modulation, per se; Pulse generating oscillator; pulse counting circuits and systems; Pulse counters and dividers; Pulse shaping or converting; Digital comparator systems; Data conversion. See References to Other Classes, below. Digital television bandwidth reduction or expansion system is classified in Class 375, subclasses 240.01-240.29; analog television bandwidth reduction or expansion is classified with the television art. See References to Other Classes, below. |
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