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  • H04L25/00
    		•  Baseband systems HB CC 5K029
  • H04L25/02
    		•  .Details HB CC 5K029
  • H04L25/02@V
    		•  Balanced transmission HB CC 5K029
  • H04L25/02@W
    		•  Current mode transmission HB CC 5K029
  • H04L25/02@J
    		•  Transmission with parallel transmission lines HB CC 5K029
  • H04L25/02@K
    		•  Data transmission that also supplies power to the elements in the transmission system (wired transmission systems in general H04B3/44, H04B3/54) HB CC 5K029
  • H04L25/02@X
    		•  Switch input signal transmission HB CC 5K029
  • H04L25/02@S
    		•  Transmission output circuit HB CC 5K029
  • H04L25/02@R
    		•  Reception input circuit HB CC 5K029
  • H04L25/02@F
    		•  related to matching HB CC 5K029
  • H04L25/02@G
    		•  related to the distribution capacity measure that exists in the wired transmission line HB CC 5K029
  • H04L25/02@Y
    		•  related to the reverse polarity connection measure of the wired transmission line HB CC 5K029
  • H04L25/02@Z
    		•  Others HB CC 5K029
  • H04L25/02,301
    		•  ..Observation; testing (transmission system observation or testing in general H04B 3/46, H04B17/00) HB CC 5K029
  • H04L25/02,301@A
    		•  Observation (H04L25/02 301F and G take precedence) HB CC 5K029
  • H04L25/02,301@B
    		•  .Line failure observation HB CC 5K029
  • H04L25/02,301@C
    		•  ..Line OFF observation HB CC 5K029
  • H04L25/02,301@D
    		•  .Transmission circuit or reception circuit observation HB CC 5K029
  • H04L25/02,301@E
    		•  .Observation of the transmission system including the repeater HB CC 5K029
  • H04L25/02,301@H
    		•  .Observation signal transmission HB CC 5K029
  • H04L25/02,301@J
    		•  Testing (H04L25/02 301F and G take precedence) HB CC 5K029
  • H04L25/02,301@K
    		•  .Loopback test HB CC 5K029
  • H04L25/02,301@F
    		•  Failure point identification HB CC 5K029
  • H04L25/02,301@G
    		•  .Phase detection type HB CC 5K029
  • H04L25/02,301@Z
    		•  Others HB CC 5K029
  • H04L25/02,302
    		•  ..Transmission system quality measurement, e.g. jitter or margin measurement (transmission system quality measurement in general H04B 3/46, H04B17/00) HB CC 5K029
  • H04L25/02,302@A
    		•  Jitter measurement HB CC 5K029
  • H04L25/02,302@B
    		•  Margin measurement HB CC 5K029
  • H04L25/02,302@C
    		•  Distortion measurement HB CC 5K029
  • H04L25/02,302@D
    		•  S/N measurement HB CC 5K029
  • H04L25/02,302@Z
    		•  Others HB CC 5K029
  • H04L25/02,303
    		•  ..Coupling with the transmission channel e.g. optical coupling or coupling with the transformer HB CC 5K029
  • H04L25/02,303@A
    		•  Optical coupling HB CC 5K029
  • H04L25/02,303@B
    		•  Coupling with the transformer HB CC 5K029
  • H04L25/02,303@Z
    		•  Others HB CC 5K029
  • H04L25/03
    		•  ..Shaping networks in transmitter or receiver, e.g. adaptive shaping networks [2] HB CC 5K029
  • H04L25/03@B
    		•  Band limiting circuit, e.g. transmission filter (wired transmission system in general H04B3/04Z) HB CC 5K029
  • H04L25/03@C
    		•  Code-to-code interference removal circuit, e.g. equaliser (wired transmission system in general H04B3/04A) HB CC 5K029
  • H04L25/03@D
    		•  Amplifier control circuit, e.g. AGC (wired transmission system in general H04B3/04B) HB CC 5K029
  • H04L25/03@E
    		•  Signal identification circuit or amplitude identification circuit HB CC 5K029
  • H04L25/03@Z
    		•  Others HB CC 5K029
  • H04L25/04
    		•  ...Passive shaping networks [2] HB CC 5K029
  • H04L25/05
    		•  ..Electric or magnetic storage of signals before transmitting or retransmitting for changing the transmission rate [7] HB CC 5K029
  • H04L25/06
    		•  ..Dc level restoring means; Bias distortion correction HB CC 5K029
  • H04L25/08
    		•  ..Modifications for reducing interference; Modifications for reducing effects due to line faults HB CC 5K029
  • H04L25/08@A
    		•  identifying the received signal at multiple time points in a time slot then making decision by majority HB CC 5K029
  • H04L25/08@B
    		•  identifying the received signal based on at least one sample value or identification value before and after the identification point HB CC 5K029
  • H04L25/08@Z
    		•  Others HB CC 5K029
  • H04L25/10
    		•  ..Compensating for variations in line balance HB CC 5K029
  • H04L25/12
    		•  ..Compensating for variations in line impedance HB CC 5K029
  • H04L25/14
    		•  ..Channel dividing arrangements HB CC 5K029
  • H04L25/17
    		•  ..Interpolating arrangements [4] HB CC 5K029
  • H04L25/18
    		•  ..Arrangements for inductively generating telegraphic signals HB CC 5K029
  • H04L25/20
    		•  ..Repeater circuits; Relay circuits HB CC 5K029
  • H04L25/22
    		•  ...Repeaters for converting two wires to four wires; Repeaters for converting single current to double current HB CC 5K029
  • H04L25/24
    		•  ...Relay circuits using discharge tubes or semiconductor devices HB CC 5K029
  • H04L25/26
    		•  ...Circuits with optical sensing means HB CC 5K029
  • H04L25/28
    		•  ...Repeaters using modulation and subsequent demodulation HB CC 5K029
  • H04L25/30
    		•  .Non-synchronous systems HB CC 5K029
  • H04L25/32
    		•  ..characterised by the code employed HB CC 5K029
  • H04L25/34
    		•  ...using three or more different amplitudes, e.g. cable code HB CC 5K029
  • H04L25/38
    		•  .Synchronous or start-stop systems, e.g. for Baudot code HB CC 5K029
  • H04L25/38@A
    		•  Synchronisation system HB CC 5K029
  • H04L25/38@C
    		•  .System that uses a single transmission line, supplies the synchronisation signal from the receiver side, and at the same time, transmits digital information from the transmitter side HB CC 5K029
  • H04L25/38@T
    		•  Start-stop system, i.e. start-stop synchronisation system HB CC 5K029
  • H04L25/38@Z
    		•  Others HB CC 5K029
  • H04L25/40
    		•  ..Transmitting circuits; Receiving circuits HB CC 5K029
  • H04L25/40@S
    		•  Transmitting circuits HB CC 5K029
  • H04L25/40@R
    		•  Receiving circuits HB CC 5K029
  • H04L25/40@Z
    		•  Others HB CC 5K029
  • H04L25/42
    		•  ...using mechanical distributors HB CC 5K029
  • H04L25/44
    		•  ...using relay distributors HB CC 5K029
  • H04L25/45
    		•  ...using electronic distributors [2] HB CC 5K029
  • H04L25/46
    		•  ...using tuning forks or vibrating reeds HB CC 5K029
  • H04L25/48
    		•  ...characterised by the code employed (H04L25/49 takes precedence) [2] HB CC 5K029
  • H04L25/49
    		•  ...using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels [2] HB CC 5K029
  • H04L25/49@C
    		•  using binary pulses HB CC 5K029
  • H04L25/49@A
    		•  .using conversion from m digits to n digits (m, n: integer of 2 or larger) HB CC 5K029
  • H04L25/49@N
    		•  .CMI code HB CC 5K029
  • H04L25/49@E
    		•  .Biphase mark code or biphase space code HB CC 5K029
  • H04L25/49@F
    		•  .Biphase level code i.e. Manchester code HB CC 5K029
  • H04L25/49@G
    		•  .MFM code i.e. DM code HB CC 5K029
  • H04L25/49@H
    		•  .using the pulse width HB CC 5K029
  • H04L25/49@R
    		•  ..Constant time for one time slot HB CC 5K029
  • H04L25/49@J
    		•  .using the pulse position HB CC 5K029
  • H04L25/49@K
    		•  using ternary pulses HB CC 5K029
  • H04L25/49@P
    		•  .using conversion from m digits to n digits (m, n: integer of 2 or larger) HB CC 5K029
  • H04L25/49@S
    		•  .AMI code HB CC 5K029
  • H04L25/49@Q
    		•  .Coding which substitutes continuation of data 0 with another code in AMI code, e.g. BnZS code or HDBn code HB CC 5K029
  • H04L25/49@L
    		•  using pulses having more values than ternary values HB CC 5K029
  • H04L25/49@T
    		•  .using conversion from m digits to n digits (m, n: integer of 2 or larger) HB CC 5K029
  • H04L25/49@M
    		•  using non-rectangular wave representation HB CC 5K029
  • H04L25/49@Z
    		•  Others HB CC 5K029
  • H04L25/493
    		•  ....by transition coding, i.e. the time-position or direction of a transition being encoded before transmission [3] HB CC 5K029
  • H04L25/497
    		•  ....by correlative coding, e.g. partial response coding or echo modulation coding [3] HB CC 5K029
  • H04L25/52
    		•  ..Repeater circuits; Relay circuits HB CC 5K029
  • H04L25/52@A
    		•  Synchronisation system HB CC 5K029
  • H04L25/52@Z
    		•  Others HB CC 5K029
  • H04L25/54
    		•  ...using mechanical distributors HB CC 5K029
  • H04L25/56
    		•  ...Non-electrical regenerative repeaters HB CC 5K029
  • H04L25/58
    		•  ...using relay distributors HB CC 5K029
  • H04L25/60
    		•  ...Regenerative repeaters with electromagnetic switches HB CC 5K029
  • H04L25/62
    		•  ...using tuning forks or vibrating reeds HB CC 5K029
  • H04L25/64
    		•  ...Start-stop regenerative repeaters using discharge tubes or semiconductor devices HB CC 5K029
  • H04L25/66
    		•  ...Synchronous repeaters using discharge tubes or semiconductor devices HB CC 5K029
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