H04J   1/00  \	0	0	5K022	H04J   1/00	6359	ȿʬ¿ŲʣȣʣͥˡΣ	Frequency-division multiplex systems () [5]
H04J   1/02  \	1	1	5K022	H04J   1/02	445		Details
H04J   1/04  \	2	2	5K022	H04J   1/04	247	ȿѴ	Frequency-transposition arrangements
H04J   1/04 100 \	3	3	5K022	H04J   1/04	26	ȿžѤե륿	filter used for converting frequency
H04J   1/05  \	3	3	5K022	H04J   1/05	180	ǥ뵻ѤѤΡΣ	using digital techniques [3]
H04J   1/06  \	2	2	5K022	H04J   1/06	175	ȶ	Arrangements for supplying the carrier waves
H04J   1/08  \	2	2	5K022	H04J   1/08	198	ͥ	Arrangements for combining channels
H04J   1/10  \	2	2	5K022	H04J   1/10	120	ֶ֡㡥ʬѡ˵	Intermediate station arrangements, e.g. for branching, for tapping-off
H04J   1/12  \	2	2	5K022	H04J   1/12	108	ͥϳ㸺	Arrangements for reducing cross-talk between channels
H04J   1/14  \	2	2	5K022	H04J   1/14	146	ƽпޤϴƻ뿮뤿	Arrangements providing for calling or supervisory signals
H04J   1/16  \	2	2	5K022	H04J   1/16	179	ƻ	Monitoring arrangements
H04J   1/18  \	1	1	5K022	H04J   1/18	9	ȤĴƤΡʣȣʣͥˡΣ	in which all the carriers are amplitude-modulated (H04J 1/02 takes precedence) [3]
H04J   1/20  \	1	1	5K022	H04J   1/20	28	ȤȤĴƤΡʣȣʣͥˡΣ	in which at least one carrier is angle-modulated (H04J 1/02 takes precedence) [3]
H04J   3/00  \	0	0	5K028	H04J   3/00	281	ʬ¿ŲʣȣʣͥˡΣ	Time-division multiplex systems () [4,5]
H04J   3/00  A	0	0	5K028	H04J   3/00	1290	¿Ų¿ʬΥ	Multiplexing or multi-separation system
H04J   3/00  B	0	1	5K028	H04J   3/00	1157	եݥ๽ħΤ	characterized by the frame configuration
H04J   3/00  C	0	1	5K028	H04J   3/00	244	ηħΤ	characterized by the signal format
H04J   3/00  D	0	2	5K028	H04J   3/00	78	УͿ	PAM signal
H04J   3/00  E	0	2	5K028	H04J   3/00	165	УУͿ	PPM signal
H04J   3/00  F	0	2	5K028	H04J   3/00	54	УףͿ	PWM signal
H04J   3/00  G	0	2	5K028	H04J   3/00	68	¿Ϳ	Many-valued signal
H04J   3/00  H	0	0	5K028	H04J   3/00	3346	ԣģ̱ͣ̿	TDMA (excluding satellite communication)
H04J   3/00  J	0	1	5K028	H04J   3/00	124	ǣ	AGC
H04J   3/00  K	0	1	5K028	H04J   3/00	545	¿¿	Multi-direction multiplexing
H04J   3/00  L	0	0	5K028	H04J   3/00	77	ƣģͤԣģͤؤѴ	Conversion from FDM into TDM
H04J   3/00  M	0	0	5K028	H04J   3/00	2040	¿	Video signal multiplexing
H04J   3/00  N	0	0	5K028	H04J   3/00	82	ԣֿ浢ο¿šʸʬ	Signal multiplexing during the TV signal retrace line period (literary categorisation)
H04J   3/00  P	0	0	5K028	H04J   3/00	142	ŸȷѤ	utilising the commercial power supply waveform
H04J   3/00  Q	0	0	5K028	H04J   3/00	582	ѤΡ¿ŤħΤʤΤϡȣ£	utilising light (not characterized by multiplexing H 04 B 9/00)
H04J   3/00  R	0	0	5K028	H04J   3/00	587	ѡͽ¿̿Ϥθѡͽڴȣ̣ʬ	In-service/standby (change-over between in-service and standby of the multi-communication system. H 04 L 1/22 also applicable.)
H04J   3/00  S	0	0	5K028	H04J   3/00	159	ְ¿	Time compression multiplexing
H04J   3/00  T	0	0	5K028	H04J   3/00	366	򴹴ϢΤΡʸʬ	related to switching (literary categorisation)
H04J   3/00  U	0	0	5K028	H04J   3/00	1380	Ʊǥϥ顼ʣӣģȡӣϣΣţԡ	New synchronisation digital hierarchy (SDH, SONET)
H04J   3/00  V	0	1	5K028	H04J   3/00	365	Сإå	Overhead
H04J   3/00  W	0	2	5K028	H04J   3/00	242	ݥ	Pointer
H04J   3/00  X	0	0	5K028	H04J   3/00	240	ͥ	Cross-connector
H04J   3/00  Y	0	0	5K028	H04J   3/00	287	ɣӣģΡ¿Ž˴ؤΡ	ISDN (related to the multiplexing process)
H04J   3/00  Z	0	0	5K028	H04J   3/00	1354	¾Τ	Others
H04J   3/02  \	1	1	5K028	H04J   3/02	238		Details
H04J   3/04  \	2	2	5K028	H04J   3/04	26	ĴޤĴȷ礵줿ʬ۴	Distributors combined with modulators or demodulators
H04J   3/04  A	2	0	5K028	H04J   3/04	306	Ĵȷ礵줿ʬ۴	Distributor coupled with the demodulator
H04J   3/04  Z	2	0	5K028	H04J   3/04	807	¾ΤΡ¿Ųϩ	Others (multiplexing circuit)
H04J   3/06  \	2	2	5K028	H04J   3/06	115	Ʊ	Synchronising arrangements
H04J   3/06  A	2	0	5K028	H04J   3/06	1913	եݥƱ̣ȣ̣ˤʬ	Frame synchronisation (also categorised into H 04 L 7/08)
H04J   3/06  B	2	1	5K028	H04J   3/06	408	եݥƱݸ	Frame synchronisation protection
H04J   3/06  C	2	0	5K028	H04J   3/06	541	¿Ѵ	Multi-conversion
H04J   3/06  D	2	0	5K028	H04J   3/06	939	Ʊ	Phase synchronisation
H04J   3/06  Z	2	0	5K028	H04J   3/06	1452	¾Τ	Others
H04J   3/07  \	3	3	5K028	H04J   3/07	568	ۤʤޤư®٤ķϤΤ˥åեѥ륹ѤΡΣ	using pulse stuffing for systems with different or fluctuating information rates [3]
H04J   3/08  \	2	2	5K028	H04J   3/08	14	ֶ֡㡥ʬѡ˵	Intermediate station arrangements, e.g. for branching, for tapping-off
H04J   3/08  A	2	0	5K028	H04J   3/08	379		Relay
H04J   3/08  B	2	0	5K028	H04J   3/08	362	ʬ	Branch or insertion
H04J   3/08  Z	2	0	5K028	H04J   3/08	30	¾Τ	Others
H04J   3/10  \	2	2	5K028	H04J   3/10	47	ͥϳ㸺	Arrangements for reducing cross-talk between channels
H04J   3/12  \	2	2	5K028	H04J   3/12	442	ƽпޤϴƻ뿮뤿	Arrangements providing for calling or supervisory signals
H04J   3/14  \	2	2	5K028	H04J   3/14	61	ƻ	Monitoring arrangements
H04J   3/14  A	2	0	5K028	H04J   3/14	917	ƻ뿮ˤ	using the observation signal
H04J   3/14  Z	2	0	5K028	H04J   3/14	1452	¾Τ	Others
H04J   3/16  \	1	1	5K028	H04J   3/16	116	θġΥͥФֳƤѤǤΡ㡥ʣοȹ礻ѤäƤ椯ΤĴΡͥοѲΡʣȣʣȣʣͥˡΣ	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   3/16  A	1	0	5K028	H04J   3/16	240	ͥ	Preferential transmission
H04J   3/16  Z	1	0	5K028	H04J   3/16	1190	¾Τ	Others
H04J   3/17  \	1	1	5K028	H04J   3/17	49	裱ܤλѼԤٻߤȤλѼԤ˳ƤƤͥ裲ܤλѼԤ˳ƤΡ㡥ԣӣɡΣ	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 [2006.01]
H04J   3/17  A	1	0	5K028	H04J   3/17	246	ٻߥͥ˥ǡݥƤ	Data assigned to the voice paused channel
H04J   3/17  Z	1	0	5K028	H04J   3/17	480	¾Τ	Others
H04J   3/18  \	1	1	5K028	H04J   3/18	23	ġομȿ̤Ӥθ³ȿĥѤ	using frequency compression and subsequent expansion of the individual signals
H04J   3/20  \	1	1	5K028	H04J   3/20	65	쥾ʥȥȥ󥹥եѤΡΣ	using resonant transfer [2]
H04J   3/22  \	1	1	5K028	H04J   3/22	506	ʣۤʤ®٤ޤĤΡΣ	in which the sources have different rates or codes [4]
H04J   3/24  \	1	1	5K028	H04J   3/24	391	Ƥɥ쥹ˤäƻؼΡʣȣʣͥˡΣ	in which the allocation is indicated by an address () [4]
H04J   3/26  \	2	2	5K028	H04J   3/26	37	󤪤ӥɥ쥹ƱΡΣ	in which the information and the address are simultaneously transmitted [4]
H04J   4/00  \	0	0	5K022	H04J   4/00	438	ʬ¿Ųȼȿʬ¿ŲȤȤ߹礻ʣȣʣͥˡΣ	Combined time-division and frequency-division multiplex systems (H04J 13/00 takes precedence) [2]
H04J   7/00  \	0	0	5K022	H04J   7/00	172	ġΥͥοοޤϻ³֤ΥͥͭǤ褦¿Ų	Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels
H04J   7/02  \	1	1	5K022	H04J   7/02	9	ζͭǤ褦ʤ	in which the polarity of the amplitude is characteristic
H04J   9/00  \	0	0	5K022	H04J   9/00	284	ƥͥ뤬ۤʤĴˤäɽ蘆¿Ų	Multiplex systems in which each channel is represented by a different type of modulation of the carrier
H04J  11/00  \	0	0	5K022	H04J  11/00	190	ľ¿ŲʣȣʣͥˡΣ	Orthogonal multiplex systems (H04J 13/00 takes precedence) [2]
H04J  11/00  A	0	0	5K022	H04J  11/00	289	ľ¿Ų	Phase orthogonal multiplexing system
H04J  11/00  B	0	0	5K022	H04J  11/00	790	ľ¿Ų	Polarisation orthogonal multiplexing system
H04J  11/00  Z	0	0	5K022	H04J  11/00	17640	¾Τ	Others
H04J  13/00  \	0	0	5K022	H04J  13/00	4829	ʬ¿Ųʼȿۥåԥ󥰤ΤΤΣȣ£ˡΣ	Code division multiplex systems (for frequency hopping H04B  1/713)
H04J  13/10  \	1	1	5K022	H04J  13/10	632	Σ	Code generation
H04J  13/12  \	2	2	5K022	H04J  13/12	234	ľΣ	Generation of orthogonal codes
H04J  13/14  \	2	2	5K022	H04J  13/14	87	ڣãΣ	Generation of codes with a zero correlation zone
H04J  13/16  \	1	1	5K022	H04J  13/16	1145	ơΣ	Code allocation
H04J  13/18  \	2	2	5K022	H04J  13/18	827	ľγơΣ	Allocation of orthogonal codes
H04J  13/20  \	3	3	5K022	H04J  13/20	99	ľѳȻΨΣϣ֣ӣơγơΣ	having an orthogonal variable spreading factor [OVSF]
H04J  13/22  \	2	2	5K022	H04J  13/22	234	ϰϡΣڣãڡγơΣ	Allocation of codes with a zero correlation zone
H04J  14/00  \	0	0	5K102	H04J  14/00	1116	Ū¿ŲΣ	Optical multiplex systems [5]
H04J  14/00 150 \	1	1	5K102	H04J  14/00	173	¿Ų	Optical Code Multiplex
H04J  14/02  \	1	1	5K102	H04J  14/02	6854	Ĺʬ¿ŲΣ	Wavelength-division multiplex systems [5]
H04J  14/02 101 \	2	2	5K102	H04J  14/02	1273	åɡɡɥå¿Ž	Add and drop multiplexing
H04J  14/02 121 \	2	2	5K102	H04J  14/02	335	ѥ桤㡥ѥΰݻ	Power, e.g. constant maintenance of the total optical power
H04J  14/02 198 \	2	2	5K102	H04J  14/02	381	֥ꥢ¿ŲΣӣã͡Ϥͭ	with sub-carrier multiplexing [SCM]
H04J  14/04  \	1	1	5K102	H04J  14/04	181	⡼¿ŲΣ	Mode multiplex systems [5]
H04J  14/06  \	1	1	5K102	H04J  14/06	434	¿ŲΣ	Polarization multiplex systems [5]
H04J  14/08  \	1	1	5K102	H04J  14/08	1054	ʬ¿ŲΣ	Time-division multiplex systems [5]
H04J  14/08 130 \	2	2	5K102	H04J  14/08	50	åɡɡɥå¿Ž	Add and drop multiplexing
H04J  99/00  \	0	0	5K022	H04J  99/00	9308	Υ֥饹¾Υ롼פˤʬवʤΣ	Subject matters not provided for in other groups of this subclass [2009.01]
H04J  99/00 100 \	1	1	5K022	H04J  99/00	495	ľ¿Ų	Non-orthogonal multiple access system
