Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L25/00—Baseband systems
  • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
  • H04L25/40—Transmitting circuits; Receiving circuits
  • H04L25/49—Transmitting circuits; Receiving circuits 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 ; Baseband coding techniques specific to data transmission systems
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06F—ELECTRIC DIGITAL DATA PROCESSING
  • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
  • G06F1/02—Digital function generators
  • G06F1/022—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03F—AMPLIFIERS
  • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
  • H03F3/45—Differential amplifiers
  • H03F3/45071—Differential amplifiers with semiconductor devices only
  • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
  • H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
  • H03F3/45183—Long tailed pairs
  • H03F3/45192—Folded cascode stages
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03K—PULSE TECHNIQUE
  • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
  • H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B3/00—Line transmission systems
  • H04B3/02—Details
  • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
  • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Applications Claiming Priority (4)

Publications (2)

Family

ID=27433703

Family Applications (1)

Country Status (8)

Families Citing this family (4)

• 1987
  • 1987-09-07 DE DE8787113056T patent/DE3785137D1/de not_active Expired - Lifetime
  • 1987-09-07 EP EP87113056A patent/EP0265637B1/de not_active Expired - Lifetime
  • 1987-09-23 DK DK499587A patent/DK499587A/da not_active Application Discontinuation
  • 1987-09-24 CA CA000547734A patent/CA1276690C/en not_active Expired - Fee Related
  • 1987-09-25 AU AU78971/87A patent/AU7897187A/en not_active Abandoned
  • 1987-09-25 JP JP62239108A patent/JPH0795329B2/ja not_active Expired - Fee Related
  • 1987-09-25 FI FI874225A patent/FI874225A/fi not_active Application Discontinuation
  • 1987-09-28 NO NO874060A patent/NO874060L/no unknown

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