Recherchebereich

Symbol Version, Sprache

Ergebnisbereich

Suchanfrage: Es wurde noch keine Recherche ausgeführt.

Symbol IPC-Stellen auswählen Titel
A
Hierarchie anzeigen
HUMAN NECESSITIES
B
Hierarchie anzeigen
PERFORMING OPERATIONS; TRANSPORTING
C
Hierarchie anzeigen
CHEMISTRY; METALLURGY
D
Hierarchie anzeigen
TEXTILES; PAPER
E
Hierarchie anzeigen
FIXED CONSTRUCTIONS
F
Hierarchie anzeigen
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
G
Hierarchie anzeigen
PHYSICS
H
Hierarchie anzeigen
ELECTRICITY
H01
Hierarchie anzeigen
BASIC ELECTRIC ELEMENTS
H02
Hierarchie anzeigen
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H03
Hierarchie anzeigen
BASIC ELECTRONIC CIRCUITRY
H04
Hierarchie anzeigen
ELECTRIC COMMUNICATION TECHNIQUE
H04B
Hierarchie anzeigen
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
Hierarchie anzeigen
BROADCAST COMMUNICATION (transmission in general H04B; multiplex communication H04J)
H04J
Hierarchie anzeigen
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
Hierarchie anzeigen
SECRET COMMUNICATIONJAMMING OF COMMUNICATION
H04L
Hierarchie anzeigen
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
Hierarchie anzeigen
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)
H04M 1/00
Hierarchie anzeigen
Substation equipment, e.g. for use by subscribers (subscriber services or facilities provided at exchanges H04M 3/00; prepayment telephone coin boxes H04M 17/00; current supply arrangements H04M 19/08; keyboard switches in general H01H 13/70 , H03K 17/94) [1, 7]
H04M 1/02
Hierarchie anzeigen
Constructional features of telephone sets
H04M 1/03
Hierarchie anzeigen
. . Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets (transducers in general H04R 1/00) [2]
H04M 1/04
Hierarchie anzeigen
. . Supports for telephone transmitters or receivers (for transducers in general H04R 1/00)
H04M 1/05
Hierarchie anzeigen
. . . adapted for use on head, throat, or breast
H04M 1/06
Hierarchie anzeigen
. . . HooksCradles
H04M 1/08
Hierarchie anzeigen
. . . . associated with switches operated by weight of receiver or hand-set
H04M 1/10
Hierarchie anzeigen
. . . . associated with switches operated by magnetic effect due to proximity of receiver or hand-set
H04M 1/11
Hierarchie anzeigen
. . Supports for sets, e.g. incorporating armrests
H04M 1/12
Hierarchie anzeigen
. . . Adjustable supports, e.g. extensible
H04M 1/13
Hierarchie anzeigen
. . . . pantographic
H04M 1/14
Hierarchie anzeigen
. . . with resilient means to eliminate extraneous vibrations
H04M 1/15
Hierarchie anzeigen
. . Protection or guiding telephone cords (devices specially adapted or mounted for storing and repeatedly paying-out and restoring lengths of material B65H 75/34; in general H02G 11/00) [5]
H04M 1/17
Hierarchie anzeigen
. . Hygienic or sanitary devices on telephone equipment (for mouthpieces or earpieces H04R 1/12) [2]
H04M 1/18
Hierarchie anzeigen
. . Telephone sets modified for use in ships, mines, or other places exposed to adverse environment (H04M 1/19 takes precedence; telephone cabinets E04H 1/14)
H04M 1/19
Hierarchie anzeigen
. . Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmissionSpecial mouthpieces or receivers therefor (circuit arrangements for preventing eavesdropping H04M 1/68; telephone cabinets E04H 1/14)
H04M 1/20
Hierarchie anzeigen
. . Arrangements for preventing acoustic feedback (H04M 1/62 takes precedence)
H04M 1/21
Hierarchie anzeigen
. . Combinations with auxiliary equipment, e.g. with clock, with memoranda pad
H04M 1/215
Hierarchie anzeigen
. . . by non-intrusive coupling means, e.g. acoustic couplers [7]
H04M 1/22
Hierarchie anzeigen
. . IlluminatingArrangements for improving visibility of characters on dials
H04M 1/23
Hierarchie anzeigen
. . Construction or mounting of dials or of equivalent devicesMeans for facilitating the use thereof (by improving visibility H04M 1/22)
H04M 1/24
Hierarchie anzeigen
Arrangements for testing (measuring electric values G01R; testing transducers H04R 29/00)
H04M 1/247
Hierarchie anzeigen
Telephone sets including user guidance or feature selection means facilitating their use [7]
H04M 1/253
Hierarchie anzeigen
Telephone sets using digital voice transmission (simultaneous speech and data transmission H04M 11/06) [7]
H04M 1/26
Hierarchie anzeigen
Devices for calling a subscriber (H04M 1/66 takes precedence; coding in connection with keyboards or like devices, in general H03M 11/00) [1, 7]
H04M 1/27
Hierarchie anzeigen
. . Devices whereby a plurality of signals may be stored simultaneously [2]
H04M 1/272
Hierarchie anzeigen
. . . with provision for storing only one subscriber number at a time, e.g. by keyboard or dial [2]
H04M 1/274
Hierarchie anzeigen
. . . with provision for storing more than one subscriber number at a time, e.g. using toothed disc [2]
H04M 1/2745
Hierarchie anzeigen
. . . . using static electronic memories, i.e. memories whose operation does not require relative movement between storage means and a transducer, e.g. chip [7]
H04M 1/275
Hierarchie anzeigen
. . . . . implemented by means of portable electronic directories [7]
H04M 1/2755
Hierarchie anzeigen
. . . . . whose contents are provided by optical scanning [7]
H04M 1/276
Hierarchie anzeigen
. . . . using magnetic recording, e.g. on tape [2]
H04M 1/278
Hierarchie anzeigen
. . . . using punched cards or tapes [2]
H04M 1/30
Hierarchie anzeigen
. . Devices which can set up and transmit only one digit at a time
H04M 1/31
Hierarchie anzeigen
. . . by interrupting current to generate trains of pulsesby periodically opening and closing contacts to generate trains of pulses [2]
H04M 1/315
Hierarchie anzeigen
. . . . Clutches, spring assemblies, speed regulators, e.g. centrifugal brakes (H04M 1/32 to H04M 1/40 take precedence) [3]
H04M 1/32
Hierarchie anzeigen
. . . . Locking setting devices during transmission to prevent interference by user
H04M 1/34
Hierarchie anzeigen
. . . . Lost-motion or other arrangements for ensuring a pause between successive digit transmissions
H04M 1/36
(transferred to H04M 1/677)
H04M 1/38
Hierarchie anzeigen
. . . . Pulses transmitted by a movement variably limited by the setting of a stop
H04M 1/40
Hierarchie anzeigen
. . . . wherein the setting-operation short-circuits or open-circuits the transmitting mechanism during a variable part of a cycle
H04M 1/50
Hierarchie anzeigen
. . . by generating or selecting currents of predetermined frequencies or combinations of frequencies [2]
H04M 1/515
Hierarchie anzeigen
. . by generating or selecting other signals than trains of pulses of similar shape or other signals than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses, impedance dialling [2]
H04M 1/52
Hierarchie anzeigen
. . Arrangements wherein a dial or equivalent is mechanically coupled to a line selector
H04M 1/53
Hierarchie anzeigen
. . Generation of additional signals, e.g. additional pulses [2]
H04M 1/54
Hierarchie anzeigen
. . . Arrangements wherein a dial or equivalent generates identifying signals, e.g. in party-line systems [2]
H04M 1/56
Hierarchie anzeigen
Arrangements for indicating or recording the called number at the calling subscriber's set
H04M 1/57
Hierarchie anzeigen
Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set (at the operator set in a manual exchange H04M 5/20) [2]
H04M 1/58
Hierarchie anzeigen
Anti-side-tone circuits (hybrid circuits for carrier-frequency operation H04B 1/00)
H04M 1/60
Hierarchie anzeigen
including speech amplifiers
H04M 1/62
Hierarchie anzeigen
. . Constructional arrangements
H04M 1/64
Hierarchie anzeigen
Automatic arrangements for answering callsAutomatic arrangements for recording messages for absent subscribersArrangements for recording conversations (centralised dictation systems H04M 11/10) [1, 7]
H04M 1/65
Hierarchie anzeigen
. . Recording arrangements [2, 7]
H04M 1/652
Hierarchie anzeigen
. . . Means for playing back the recorded messages by remote control over a telephone line (H04M 1/658 takes precedence) [7]
H04M 1/654
Hierarchie anzeigen
. . . Telephone line monitoring circuits therefor, e.g. ring detectors [7]
H04M 1/656
Hierarchie anzeigen
. . . for recording conversations [7]
H04M 1/658
Hierarchie anzeigen
. . . Means for redirecting recorded messages to other extensions or equipment [7]
H04M 1/66
Hierarchie anzeigen
with means for preventing unauthorised or fraudulent calling (verifying user identity or authority in secret or secure digital communications H04L 9/32) [1, 7]
H04M 1/663
Hierarchie anzeigen
. . Preventing unauthorised calls to a telephone set [7]
H04M 1/665
Hierarchie anzeigen
. . . by checking the validity of a code [7]
H04M 1/667
Hierarchie anzeigen
. . Preventing unauthorised calls from a telephone set (H04M 1/677 takes precedence) [7]
H04M 1/67
Hierarchie anzeigen
. . . by electronic means [7]
H04M 1/673
Hierarchie anzeigen
. . . . the user being required to key in a code [7]
H04M 1/675
Hierarchie anzeigen
. . . . the user being required to insert a coded card, e.g. a smart card carrying an integrated circuit chip [7]
H04M 1/677
Hierarchie anzeigen
. . Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance [7]
H04M 1/68
Hierarchie anzeigen
Circuit arrangements for preventing eavesdropping
H04M 1/70
Hierarchie anzeigen
. . Lock-out or secrecy arrangements in party-line systems
H04M 1/72
Hierarchie anzeigen
Substation extension arrangementsCordless telephones, i.e. devices for establishing wireless links to base stations without route selecting [1, 7]
H04M 1/723
Hierarchie anzeigen
. . using two or more extensions per line (H04M 1/725 takes precedence) [7]
H04M 1/725
Hierarchie anzeigen
. . Cordless telephones [7]
H04M 1/727
Hierarchie anzeigen
. . . Identification code transfer arrangements [7]
H04M 1/73
Hierarchie anzeigen
. . . Battery saving arrangements [7]
H04M 1/733
Hierarchie anzeigen
. . . with a plurality of base stations connected to a plurality of lines [7]
H04M 1/737
Hierarchie anzeigen
. . . characterised by transmission of electromagnetic waves other than radio waves, e.g. infra-red [7]
H04M 1/738
Hierarchie anzeigen
Interface circuits for coupling substations to external telephone lines (H04M 1/78 takes precedence) [7]
H04M 1/74
Hierarchie anzeigen
. . with means for reducing interferencewith means for reducing effects due to line faults
H04M 1/76
Hierarchie anzeigen
. . Compensating for differences in line impedance (in general H04B)
H04M 1/78
Hierarchie anzeigen
Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal (repeater circuits H04B 3/38) [2]
H04M 1/80
Hierarchie anzeigen
Telephone line holding circuits [7]
H04M 1/82
Hierarchie anzeigen
Line monitoring circuits for call progress or status discrimination [7]
H04M 3/00
Hierarchie anzeigen
Automatic or semi-automatic exchanges
H04M 5/00
Hierarchie anzeigen
Manual exchanges (substation equipment in general H04M 1/00)
H04M 7/00
Hierarchie anzeigen
Interconnection arrangements between switching centres (transmission arrangements in general H04B)
H04M 9/00
Hierarchie anzeigen
Interconnection arrangements not involving centralised switching
H04M 11/00
Hierarchie anzeigen
Telephonic communication systems adapted for combination with other electrical systems
H04M 13/00
Hierarchie anzeigen
Party-line systems (substation equipment H04M 1/00; exchange equipment H04M 3/00 , H04M 5/00; metering arrangements H04M 15/36)
H04M 15/00
Hierarchie anzeigen
Metering arrangementsTime-controlling arrangementsTime-indicating arrangements
H04M 17/00
Hierarchie anzeigen
Prepayment telephone systems (using a coded card to authorise calls from a telephone set H04M 1/675) [1, 7]
H04M 19/00
Hierarchie anzeigen
Current supply arrangements for telephone systems (for selecting equipment H04Q 1/28)
H04N
Hierarchie anzeigen
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
Hierarchie anzeigen
SELECTING (switches, relays, selectors H01H; electronic switches H03K 17/00)
H04R
Hierarchie anzeigen
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERSDEAF-AID SETSPUBLIC 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
Hierarchie anzeigen
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
Hierarchie anzeigen
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

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