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IPC-Stelle: H04R Unterklasse [Version 7 (gültig ab 01.2000), Sprache EN - English]

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DEKLA-Gruppen

Symbol		Titel
A Hierarchieinformationen		HUMAN NECESSITIES
B Hierarchieinformationen		PERFORMING OPERATIONS; TRANSPORTING
C Hierarchieinformationen		CHEMISTRY; METALLURGY
D Hierarchieinformationen		TEXTILES; PAPER
E Hierarchieinformationen		FIXED CONSTRUCTIONS
F Hierarchieinformationen		MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G Hierarchieinformationen		PHYSICS
H Hierarchieinformationen		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) [4]
H04H Hierarchieinformationen		BROADCAST COMMUNICATION (transmission in general H04B; multiplex communication H04J)
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 se G09C; coding, decoding or code conversion, in general H03M; arrangements common to telegraphic and telephonic communication H04M; selecting H04Q) [4]
H04M Hierarchieinformationen		TELEPHONIC COMMUNICATION (counting mechanisms G06M; circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08; reels or other take-up devices for cords H02G 11/00; multiplex transmission between switching centres H04J; selecting arrangements H04Q; loudspeakers, microphones, gramophone pick-ups or like electromechanical transducers H04R)
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; electronic switches H03K 17/00)
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]
H04R 1/00 Hierarchieinformationen		Details of transducers (diaphragms H04R 7/00; characterised by the nature of the transducer, see the relevant group of main groups H04R 9/00 to H04R 23/00; mounting radio sets or communication systems in helmets A42B 3/30; mountings specially adapted for telephone equipment H04M 1/02)
H04R 3/00 Hierarchieinformationen		Circuits for transducers (for stereophonic arrangements H04R 5/04; arrangements for producing a reverberation or echo sound G10K 15/08; amplifiers H03F)
H04R 5/00 Hierarchieinformationen		Stereophonic arrangements (stereophonic pick-ups H04R 9/16 , H04R 11/12 , H04R 17/08 , H04R 19/10)
H04R 7/00 Hierarchieinformationen		Diaphragms for electromechanical transducers (in general F16J 3/00); Cones (for musical instruments G10)
H04R 9/00 Hierarchieinformationen		Transducers of moving-coil, moving-strip, or moving-wire type
H04R 11/00 Hierarchieinformationen		Transducers of moving-armature or moving-core type (acoustic diaphragm of magnetisable material directly co-acting with electromagnet H04R 13/00)
H04R 13/00 Hierarchieinformationen		Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
H04R 15/00 Hierarchieinformationen		Magnetostrictive transducers (magnetostrictive elements in general H01L 41/00)
H04R 17/00 Hierarchieinformationen		Piezo-electric transducers; Electrostrictive transducers (piezo-electric or electrostrictive elements in general H01L 41/00; details of piezo-electric or electrostrictive motors, generators or positioners H02N 2/00)
H04R 19/00 Hierarchieinformationen		Electrostatic transducers
H04R 21/00 Hierarchieinformationen		Variable-resistance transducers (gaseous-resistance transducers H04R 23/00; magneto-resistive transducers H04R 23/00)
H04R 23/00 Hierarchieinformationen		Transducers other than those covered by groups H04R 9/00 to H04R 21/00
H04R 25/00 Hierarchieinformationen		Deaf-aid sets (constructions of transducers per se H04R 9/00 to H04R 23/00; structural combination with spectacle frames G02C 11/06; processing of speech signals G10L 21/00)
H04R 27/00 Hierarchieinformationen		Public address systems (circuits for preventing acoustic reaction H04R 3/02; circuits for distributing signals to loud-speakers H04R 3/12; amplifiers H03F)
H04R 29/00 Hierarchieinformationen		Monitoring arrangements; Testing arrangements
H04R 31/00 Hierarchieinformationen		Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor (processes or apparatus specially adapted for the manufacture of micro-structural devices or systems, e.g. in combination with electrical devices, B81C)
H04S Hierarchieinformationen		STEREOPHONIC SYSTEMS (information storage on discs or tapes G11B; broadcast systems for the distribution of stereophonic information H04H 5/00; multiplex systems in general H04J) [3]
H05 Hierarchieinformationen		ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

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