NL65647C - - Google Patents

Info

Publication number: NL65647C
Authority: NL; Netherlands

Application number

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1947-04-21

Publication of NL65647C publication Critical patent/NL65647C/xx

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
- H04L25/4902—Pulse width modulation; Pulse position modulation
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K21/00—Details of pulse counters or frequency dividers
- 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
- H04L25/493—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 by transition coding, i.e. the time-position or direction of a transition being encoded before transmission
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
- H04Q5/06—Signalling by amplitude or polarity of DC

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Signal Processing (AREA)
Monitoring And Testing Of Exchanges (AREA)

NL65647D 1947-04-21 NL65647C (mo)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
NL842080X		1947-04-21
NL966452X		1947-04-21
NL301276X		1947-04-21
NL660357X		1947-04-21

Publications (1)

Publication Number	Publication Date
NL65647C true NL65647C (mo)

Family

ID=27483724

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL65647D NL65647C (mo)	1947-04-21

Country Status (2)

Country	Link
CH (1)	CH301276A (mo)
NL (1)	NL65647C (mo)

0
- NL NL65647D patent/NL65647C/xx active
1948
- 1948-04-07 CH CH301276D patent/CH301276A/fr unknown

Also Published As

Publication number	Publication date
CH301276A (fr)	1954-08-31

Publication	Publication Date	Title
AT165716B (mo)	1950-04-11
AT166672B (mo)	1950-09-11
AT165673B (mo)	1950-04-11
AT165884B (mo)	1950-05-10
BE474505A (mo)	1947-04-30
FR954840A (mo)	1950-01-06
FR921451A (mo)	1947-05-22
BE473400A (mo)
BE474239A (mo)
BE471492A (mo)
BE476786A (mo)
BE474335A (mo)
BE474341A (mo)
NL82293C (mo)
BE458425A (mo)
BE471830A (mo)	1947-04-30
BE473383A (mo)
BE483959A (mo)
BE471160A (mo)
LU29322A1 (mo)
BE474625A (mo)
BE463900A (mo)
BE476997A (mo)
BE474872A (mo)	1947-08-30
NL143828C (mo)