Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M3/00—Automatic or semi-automatic exchanges
  • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
  • H04M3/64—Arrangements for signalling the number or class of the calling line to the operator
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D3/00—Control of position or direction
  • G05D3/12—Control of position or direction using feedback
  • G05D3/121—Control of position or direction using feedback using synchromachines (selsyns)
• • G—PHYSICS
  • G05—CONTROLLING; REGULATING
  • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
  • G05D3/00—Control of position or direction
  • G05D3/12—Control of position or direction using feedback
  • G05D3/125—Control of position or direction using feedback using discrete position sensor
  • G05D3/127—Control of position or direction using feedback using discrete position sensor with electrical contact
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
  • G09F11/12—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being carried by endless belts, chains, or the like
  • G09F11/14—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being carried by endless belts, chains, or the like the elements being in the form of stiff flaps, boards, cards, or the like
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
  • H04L17/16—Apparatus or circuits at the receiving end
  • H04L17/30—Apparatus or circuits at the receiving end using electric or electronic translation

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Automation & Control Theory (AREA)
• Signal Processing (AREA)
• Theoretical Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=26254080

Family Applications (1)

Country Status (2)

• 0
  • BE BE516055D patent/BE516055A/xx unknown
• 1952
  • 1952-11-17 FR FR1070587D patent/FR1070587A/fr not_active Expired

Also Published As

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