IPC-Stelle: H04J [Version 2006.01]

SymbolTypTitel
HSKSECTION H — ELECTRICITY
H04KLELECTRIC COMMUNICATION TECHNIQUE
H04JUKLMULTIPLEX 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)
H04J 1/00HGRFrequency-division multiplex systems (H04J 14/00 takes precedence) [5]
H04J 1/02UGR1
.Details
H04J 1/04UGR2
. .Frequency-transposition arrangements
H04J 1/05UGR3
. . .using digital techniques [3]
H04J 1/06UGR2
. .Arrangements for supplying the carrier waves
H04J 1/08UGR2
. .Arrangements for combining channels
H04J 1/10UGR2
. .Intermediate station arrangements, e.g. for branching, for tapping-off
H04J 1/12UGR2
. .Arrangements for reducing cross-talk between channels
H04J 1/14UGR2
. .Arrangements providing for calling or supervisory signals
H04J 1/16UGR2
. .Monitoring arrangements
H04J 1/18UGR1
.in which all the carriers are amplitude-modulated (H04J 1/02 takes precedence) [3]
H04J 1/20UGR1
.in which at least one carrier is angle-modulated (H04J 1/02 takes precedence) [3]
H04J 3/00HGRTime-division multiplex systems (H04J 14/00 takes precedence; relay systems H04B 7/14; selecting techniques H04Q) [4, 5]
H04J 3/02UGR1
.Details (electronic switching or gating H03K 17/00)
H04J 3/04UGR2
. .Distributors combined with modulators or demodulators
H04J 3/06UGR2
. .Synchronising arrangements
H04J 3/07UGR3
. . .using pulse stuffing for systems with different or fluctuating information rates [3]
H04J 3/08UGR2
. .Intermediate station arrangements, e.g. for branching, for tapping-off
H04J 3/10UGR2
. .Arrangements for reducing cross-talk between channels
H04J 3/12UGR2
. .Arrangements providing for calling or supervisory signals
H04J 3/14UGR2
. .Monitoring arrangements
H04J 3/16UGR1
.in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted (H04J 3/17, H04J 3/24 take precedence) [4]
H04J 3/17UGR1
.in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI [4]
H04J 3/18UGR1
.using frequency compression and subsequent expansion of the individual signals
H04J 3/20UGR1
.using resonant transfer [2]
H04J 3/22UGR1
.in which the sources have different rates or codes [4]
H04J 3/24UGR1
.in which the allocation is indicated by an address (H04J 3/17 takes precedence; in computers G06F 12/00, G06F 13/00) [4]
H04J 3/26UGR2
. .in which the information and the address are simultaneously transmitted [4]
H04J 4/00HGRCombined time-division and frequency-division multiplex systems (H04J 13/00 takes precedence) [2]
H04J 7/00HGRMultiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels
H04J 7/02UGR1
.in which the polarity of the amplitude is characteristic
H04J 9/00HGRMultiplex systems in which each channel is represented by a different type of modulation of the carrier
H04J 11/00HGROrthogonal multiplex systems (H04J 13/00 takes precedence) [2]
H04J 13/00HGRCode multiplex systems [2]
H04J 13/02UGR1
.using spread spectrum techniques [6]
H04J 13/04UGR2
. .using direct sequence modulation [6]
H04J 13/06UGR2
. .using frequency hopping [6]
H04J 14/00HGROptical multiplex systems (optical coupling, mixing or splitting, per seG02B) [5]
H04J 14/02UGR1
.Wavelength-division multiplex systems [5]
H04J 14/04UGR1
.Mode multiplex systems [5]
H04J 14/06UGR1
.Polarisation multiplex systems [5]
H04J 14/08UGR1
.Time-division multiplex systems [5]
H04J 15/00HGRMultiplex systems not otherwise provided for [2]