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IPC-Stelle: H04B 3/54 1-Punkt Untergruppe [Version 2010.01, Sprache EN - English]

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DEKLA-Gruppen

Symbol		Titel
A Hierarchieinformationen		SECTION A — HUMAN NECESSITIES
B Hierarchieinformationen		SECTION B — PERFORMING OPERATIONS; TRANSPORTING
C Hierarchieinformationen		SECTION C — CHEMISTRY; METALLURGY
D Hierarchieinformationen		SECTION D — TEXTILES; PAPER
E Hierarchieinformationen		SECTION E — FIXED CONSTRUCTIONS
F Hierarchieinformationen		SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G Hierarchieinformationen		SECTION G — PHYSICS
H Hierarchieinformationen		SECTION H — ELECTRICITY
H01 Hierarchieinformationen		BASIC ELECTRIC ELEMENTS
H02 Hierarchieinformationen		GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H03 Hierarchieinformationen		BASIC ELECTRONIC CIRCUITRY
H04 Hierarchieinformationen		ELECTRIC COMMUNICATION TECHNIQUE
H04B Hierarchieinformationen		TRANSMISSION (transmission systems for measured values, control or similar signals G08C; speech analysis or synthesis G10L; coding, decoding or code conversion, in general H03M; broadcast communication H04H; multiplex systems H04J; secret communication H04K; transmission of digital information H04L; wireless communication networks H04W) [4]
H04B 1/00 Hierarchieinformationen		Details of transmission systems, not covered by a single one of groups H04B 3/00-H04B 13/00; Details of transmission systems not characterised by the medium used for transmission (tuning resonant circuits H03J) [4]
H04B 3/00 Hierarchieinformationen		Line transmission systems (combined with near-field transmission systems H04B 5/00; constructional features of cables H01B 11/00)
H04B 3/02 Hierarchieinformationen		. Details
H04B 3/03 Hierarchieinformationen		. . Hybrid circuits (for transceivers H04B 1/52, H04B 1/58; hybrid junctions of the waveguide type H01P 5/16) [3]
H04B 3/04 Hierarchieinformationen		. . Control of transmission; Equalising (control of amplification in general H03G)
H04B 3/06 Hierarchieinformationen		. . . by the transmitted signal
H04B 3/08 Hierarchieinformationen		. . . . in negative-feedback path of line amplifier
H04B 3/10 Hierarchieinformationen		. . . by pilot signal
H04B 3/11 Hierarchieinformationen		. . . . using pilot wire (H04B 3/12 take precedence) [3]
H04B 3/12 Hierarchieinformationen		. . . . in negative-feedback path of line amplifier
H04B 3/14 Hierarchieinformationen		. . . characterised by the equalising network used
H04B 3/16 Hierarchieinformationen		. . . characterised by the negative-impedance network used
H04B 3/18 Hierarchieinformationen		. . . . wherein the network comprises semiconductor devices
H04B 3/20 Hierarchieinformationen		. . Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
H04B 3/21 Hierarchieinformationen		. . . using a set of bandfilters [3]
H04B 3/23 Hierarchieinformationen		. . . using a replica of transmitted signal in the time domain, e.g. echo cancellers [3]
H04B 3/26 Hierarchieinformationen		. . Improving frequency characteristic by the use of loading coils (loading coils per seH01F 17/08)
H04B 3/28 Hierarchieinformationen		. . Reducing interference caused by currents induced in cable sheathing or armouring
H04B 3/30 Hierarchieinformationen		. . Reducing interference caused by unbalance current in a normally balanced line
H04B 3/32 Hierarchieinformationen		. . Reducing cross-talk, e.g. by compensating
H04B 3/34 Hierarchieinformationen		. . . by systematic interconnection of lengths of cable during laying; by addition of balancing components to cable during laying
H04B 3/36 Hierarchieinformationen		. . Repeater circuits (H04B 3/58 takes precedence; amplifiers therefor H03F)
H04B 3/38 Hierarchieinformationen		. . . for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
H04B 3/40 Hierarchieinformationen		. . Artificial lines; Networks simulating a line of certain length
H04B 3/42 Hierarchieinformationen		. . Circuits for by-passing of ringing signals
H04B 3/44 Hierarchieinformationen		. . Arrangements for feeding power to a repeater along the transmission line
H04B 3/46 Hierarchieinformationen		. . Monitoring; Testing
H04B 3/48 Hierarchieinformationen		. . . Testing attenuation
H04B 3/50 Hierarchieinformationen		. Systems for transmission between fixed stations via two-conductor transmission lines (H04B 3/54 takes precedence)
H04B 3/52 Hierarchieinformationen		. Systems for transmission between fixed stations via waveguides
H04B 3/54 Hierarchieinformationen		. Systems for transmission via power distribution lines (in alarm signalling systems G08B 25/06; remote indication of power network conditions, remote control of switching means in a power distribution network H02J 13/00)
H04B 3/56 Hierarchieinformationen		. . Circuits for coupling, blocking, or by-passing of signals
H04B 3/58 Hierarchieinformationen		. . Repeater circuits (amplifiers therefor H03F)
H04B 3/60 Hierarchieinformationen		. Systems for communication between relatively movable stations, e.g. for communication with lift (H04B 3/54 takes precedence)
H04B 5/00 Hierarchieinformationen		Near-field transmission systems, e.g. inductive loop type
H04B 7/00 Hierarchieinformationen		Radio transmission systems, i.e. using radiation field (H04B 10/00, H04B 15/00 take precedence)
H04B 10/00 Hierarchieinformationen		Transmission systems employing beams of corpuscular radiation, or electromagnetic waves other than radio waves, e.g. light, infra-red (optical coupling, mixing or splitting G02B; light guides G02B 6/00; switching, modulation, demodulation of light beams G02B, G02F; devices or arrangements for the control, e.g. modulation, of light beams G02F 1/00; devices or arrangements for demodulating light, transferring the modulation or changing the frequency of light G02F 2/00; optical multiplex systems H04J 14/00) [5]
H04B 11/00 Hierarchieinformationen		Transmission systems employing ultrasonic, sonic or infrasonic waves
H04B 13/00 Hierarchieinformationen		Transmission systems characterised by the medium used for transmission, not provided for in groups H04B 3/00-H04B 11/00
H04B 14/00 Hierarchieinformationen		Transmission systems not characterised by the medium used for transmission (details thereof H04B 1/00) [4]
H04B 15/00 Hierarchieinformationen		Suppression or limitation of noise or interference (by means associated with receiver H04B 1/10)
H04B 17/00 Hierarchieinformationen		Monitoring; Testing [2]
H04H Hierarchieinformationen		BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N)
H04J Hierarchieinformationen		MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L 5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N 7/08; in exchanges H04Q 11/00; stereophonic systems H04S)
H04K Hierarchieinformationen		SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04L Hierarchieinformationen		TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (typewriters B41J; order telegraphs, fire or police telegraphs G08B; visual telegraphy G08B, G08C; teleautographic systems G08C; ciphering or deciphering apparatus per seG09C; coding, decoding or code conversion, in general H03M; arrangements common to telegraphic and telephonic communication H04M; selecting H04Q; wireless communication networks H04W) [4]
H04M Hierarchieinformationen		TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
H04N Hierarchieinformationen		PICTORIAL COMMUNICATION, e.g. TELEVISION (measuring, testing G01; systems for autographic writing, e.g. writing telegraphy, which involve following an outline G08; information storage based on relative movement between record carrier and transducer G11B; coding, decoding or code conversion, in general H03M; broadcast distribution or the recording of use made thereof H04H) [4]
H04Q Hierarchieinformationen		SELECTING (switches, relays, selectors H01H; wireless communication networks H04W) [1, 2009.01]
H04R Hierarchieinformationen		LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS (generating mechanical vibrations in general B06B; transducers for measuring particular variables G01; transducers in clocks G04; producing sounds with frequency not determined by supply frequency G10K; transducers in recording or reproducing heads G11B; transducers in motors H02) [6]
H04S Hierarchieinformationen		STEREOPHONIC SYSTEMS (information storage on discs or tapes G11B; broadcast systems for the distribution of stereophonic information H04H 20/88; multiplex systems in general H04J) [3]
H04W Hierarchieinformationen		WIRELESS COMMUNICATION NETWORKS [2009.01]
H05 Hierarchieinformationen		ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H99 Hierarchieinformationen		SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]

Zu vergleichende IPC-Stelle: Es wurden im Verzeichnis noch keine IPC-Stellen für die Vergleichsansicht vorgemerkt. [Version , Sprache ]