Internationale Patentklassifikation

Recherche
Merkliste

IPC-Version

Sprache

Anzeigesprachen

Recherche-Kriterium

Symbol	Version, Sprache	Auswahl

Suche in DEPATISnet Suche in DPMAregister

Suchanfrage: Es wurde noch keine Recherche ausgeführt.

IPC-Stelle: H04B 3/40 2-Punkt Untergruppe [Version 2013.01, Sprache EN - English]

Anzeigeoptionen

Definitionen

Anmerkungen

Sachverzeichnisse

Stich- und Schlagworte

Hierarchielinien

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 [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 [4]
H04B 3/00 Hierarchieinformationen		Line transmission systems (combined with near-field transmission systems H04B 5/00)
H04B 3/02 Hierarchieinformationen		. Details
H04B 3/03 Hierarchieinformationen		. . Hybrid circuits (for transceivers H04B 1/52, H04B 1/58) [3]
H04B 3/04 Hierarchieinformationen		. . Control of transmission; Equalising
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
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)
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)
H04B 3/56 Hierarchieinformationen		. . Circuits for coupling, blocking, or by-passing of signals
H04B 3/58 Hierarchieinformationen		. . Repeater circuits
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 electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication [5, 2013.01]
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 (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)
H04K Hierarchieinformationen		SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04L Hierarchieinformationen		TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) [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 [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 ]