IPC Definitions - January 01, 2012
H04L - Definition
This subclass covers:
Transmission of signals having been supplied in digital form, e.g. data transmission, telegraphic communication, or methods or arrangements for monitoring.
As the scope of H04L covers a diversity of subject matter, the user is referred to the definitions for the main groups of H04L. The following list is intended to assist the user.
Systems:
Arrangements of general application:
References relevant to classification in this subclass
This subclass does not cover:
Arrangements applicable to telegraphic or telephonic communication | H04M |
Attention is drawn to the following places, which may be of interest for search:
Typewriters | B41J |
Order telegraphs, fire or police telegraphs | G08B |
Visual telegraphy | G08B, G08C |
Teleautographic systems | G08C |
Ciphering or deciphering apparatus per se | G09C |
Coding, decoding or code conversion, in general | H03M |
Selecting | H04Q |
Spread spectrum techniques in general | H04B 1/69 |