GB1312481A - Digital frequency modulator - Google Patents

Digital frequency modulator

Info

Publication number
GB1312481A
GB1312481A GB798870*[A GB798870A GB1312481A GB 1312481 A GB1312481 A GB 1312481A GB 798870 A GB798870 A GB 798870A GB 1312481 A GB1312481 A GB 1312481A
Authority
GB
United Kingdom
Prior art keywords
clock pulses
signals
gate
signal
divided
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB798870*[A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Italtel SpA
Original Assignee
Societa Italiana Telecomunicazioni Siemens SpA
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.)
Filing date
Publication date
Application filed by Societa Italiana Telecomunicazioni Siemens SpA filed Critical Societa Italiana Telecomunicazioni Siemens SpA
Publication of GB1312481A publication Critical patent/GB1312481A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H04L27/122—Modulator circuits; Transmitter circuits using digital generation of carrier signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/64—Generators producing trains of pulses, i.e. finite sequences of pulses
    • H03K3/72—Generators producing trains of pulses, i.e. finite sequences of pulses with means for varying repetition rate of trains

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Time-Division Multiplex Systems (AREA)
GB798870*[A 1969-05-12 1970-03-19 Digital frequency modulator Expired GB1312481A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1672769 1969-05-12

Publications (1)

Publication Number Publication Date
GB1312481A true GB1312481A (en) 1973-04-04

Family

ID=11149283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB798870*[A Expired GB1312481A (en) 1969-05-12 1970-03-19 Digital frequency modulator

Country Status (10)

Country Link
US (1) US3659226A (enExample)
JP (1) JPS5016625B1 (enExample)
AT (1) AT341585B (enExample)
BE (1) BE745092A (enExample)
CH (1) CH510957A (enExample)
DE (1) DE2009036C3 (enExample)
FR (1) FR2031196A5 (enExample)
GB (1) GB1312481A (enExample)
NL (1) NL165350C (enExample)
SE (1) SE365372B (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2048118B2 (de) * 1970-09-30 1972-09-28 Anordnung zur wechselstromtelegrafie- und/oder datenuebertragung mit frequenzumtastung
NL7207569A (enExample) * 1972-06-03 1973-12-05
US3997855A (en) * 1975-12-24 1976-12-14 Motorola, Inc. Digital FSK time rate of change modulator
JPS59150460U (ja) * 1983-03-30 1984-10-08 株式会社東海理化電機製作所 シ−トベルト装置
US4663292A (en) * 1984-12-21 1987-05-05 Wong Daniel T High-voltage biological macromolecule transfer and cell fusion system
US6812669B2 (en) * 2002-06-14 2004-11-02 Texas Instruments Incorporated Resonant scanning mirror driver circuit
CN112055294B (zh) * 2020-09-02 2021-11-30 歌尔微电子有限公司 电容式mems芯片驱动电路、电容式mems传感器及智能电子设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994790A (en) * 1958-02-19 1961-08-01 Collins Radio Co Data phase-coding system using parallel pulse injection in binary divider chain
FR1454574A (fr) * 1965-10-22 1966-02-11 Siemens Ag Modulateur par impulsions codées

Also Published As

Publication number Publication date
DE2009036B2 (de) 1978-06-22
ATA168270A (de) 1977-06-15
DE2009036C3 (de) 1979-03-15
BE745092A (fr) 1970-07-01
NL165350C (nl) 1981-03-16
SE365372B (enExample) 1974-03-18
DE2009036A1 (de) 1972-02-17
NL165350B (nl) 1980-10-15
JPS5016625B1 (enExample) 1975-06-14
NL7006494A (enExample) 1970-11-16
AT341585B (de) 1978-02-10
CH510957A (it) 1971-07-31
FR2031196A5 (enExample) 1970-11-13
US3659226A (en) 1972-04-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee