JPS5531325A - Digital-type saw-tooth wave phase lock loop - Google Patents

Digital-type saw-tooth wave phase lock loop

Info

Publication number
JPS5531325A
JPS5531325A JP10445878A JP10445878A JPS5531325A JP S5531325 A JPS5531325 A JP S5531325A JP 10445878 A JP10445878 A JP 10445878A JP 10445878 A JP10445878 A JP 10445878A JP S5531325 A JPS5531325 A JP S5531325A
Authority
JP
Japan
Prior art keywords
tooth wave
digital
lock loop
phase lock
shifter
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.)
Granted
Application number
JP10445878A
Other languages
Japanese (ja)
Other versions
JPS5912217B2 (en
Inventor
Susumu Sasaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP53104458A priority Critical patent/JPS5912217B2/en
Publication of JPS5531325A publication Critical patent/JPS5531325A/en
Publication of JPS5912217B2 publication Critical patent/JPS5912217B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • H04L7/0274—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit with Costas loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To obtain a perfect saw-tooth wave by forming both the phase shifter and the switch into the digital type in the saw-tooth wave phase lock loop. CONSTITUTION:The digital-type saw-tooth wave phase lock loop consists of the following component units: phase shifters 11 and 12 to which the input signals are applied; filter 12 to be connected to shifter 11; voltage control oscillator 14 to be connected to filter 13; 1/2 divider 15 to be connected to oscillator14; comparator 16 to be connected to shifter 12; the phase shifter the input and the output of which are connected to divider 15 and comparator 16 and to shifters 11 and 12 respectively; and switch 17 each. While divider 15 comprises FF15a; and the phase shifter and the switch consist of FF17a and 17b, mono-multi 17e and 17f plus gates 17c and 17d each.
JP53104458A 1978-08-29 1978-08-29 Digital Sawtooth Phase Lock Loop Expired JPS5912217B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53104458A JPS5912217B2 (en) 1978-08-29 1978-08-29 Digital Sawtooth Phase Lock Loop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53104458A JPS5912217B2 (en) 1978-08-29 1978-08-29 Digital Sawtooth Phase Lock Loop

Publications (2)

Publication Number Publication Date
JPS5531325A true JPS5531325A (en) 1980-03-05
JPS5912217B2 JPS5912217B2 (en) 1984-03-21

Family

ID=14381152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53104458A Expired JPS5912217B2 (en) 1978-08-29 1978-08-29 Digital Sawtooth Phase Lock Loop

Country Status (1)

Country Link
JP (1) JPS5912217B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01105006A (en) * 1987-07-08 1989-04-21 Jtb Inc Expansion clamping tool
JPH0355909U (en) * 1989-10-04 1991-05-29
JPH05164119A (en) * 1991-05-29 1993-06-29 Artur Fischer Gmbh Expanding stopper composed of plastic

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01105006A (en) * 1987-07-08 1989-04-21 Jtb Inc Expansion clamping tool
JPH0355909U (en) * 1989-10-04 1991-05-29
JPH05164119A (en) * 1991-05-29 1993-06-29 Artur Fischer Gmbh Expanding stopper composed of plastic

Also Published As

Publication number Publication date
JPS5912217B2 (en) 1984-03-21

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