Lines with other classes and within this classExcluded from this class is analog to analog conversion. See References to Other Classes, below, for examples of other classes containing this subject matter. Included in this class (341) is subject matter relating to codes, per se, such as Morse codes, grey codes. Excluded from this class are coded records and coded record readers . See References to Other Classes, below, Combinations of an optically encoded shaft wheel and a photocell absent any signal processing circuitry are classified elsewhere. See References to Other Classes, below. Code converters which may be utilized in pulse or digital communication systems, Class 375, are classified in this class (341). A. The combination of the subject matter of this class (341) and another art environment is generally classified with the art device where the environment is significant by virtue of the claimed relationship. For example: Coding and decoding for cryptography Coding and decoding for error detection or correction Code transmitters specific to telemetry. Data compression and expansion Microwave devices. Radiowave beacons. Radar generation, conversion or systems B. Pulse generation or conversion which is not unique to communications are classified in the appropriate classes. For example: Pulse demodulation, per se. Pulse generation. Pulse modulation, per se Pulse wave conversion systems; i.e., sine wave to pulse wave See References to Other Classes, below, for appropriate class references. This class is structured into 14 main divisions. See Subclass References to the Current Class, below. |