JPS5547751A - Clock reproduction circuit - Google Patents

Clock reproduction circuit

Info

Publication number
JPS5547751A
JPS5547751A JP12223678A JP12223678A JPS5547751A JP S5547751 A JPS5547751 A JP S5547751A JP 12223678 A JP12223678 A JP 12223678A JP 12223678 A JP12223678 A JP 12223678A JP S5547751 A JPS5547751 A JP S5547751A
Authority
JP
Japan
Prior art keywords
phase
band
resonance circuit
circuit
output
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.)
Pending
Application number
JP12223678A
Other languages
Japanese (ja)
Inventor
Iwao Eguchi
Tadao Shimamura
Yukio Takimoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12223678A priority Critical patent/JPS5547751A/en
Publication of JPS5547751A publication Critical patent/JPS5547751A/en
Pending 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/10—Arrangements for initial synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To quicken the leading of phase at burst head and to reduce noise at steady state, by widening the band of resonator at transient state of burst head and controlling the band of resonator narower at steady state. CONSTITUTION:At transient state of burst head, an output is appeared at the phase comparison circuit 6, it is converted into a suitable voltage at the drive circuit 7 to control so that the band of resonance circuit 4 is broad. That is, the phase of the resonance circuit 4 is controlled so that it is in agreement with the phase of the resonance circuit 5. When the transient state is finished, the phase of the output of the resonance circuits 4 and 5 is zero, the output of the phase comparison circuit 6 is zero, and control is made that the band width of the resonance circuit 4 can be narrow. As the resonance circuit, in which the band width can be varied, it can be constituted by using variable resistance element of current control such as PIN diode.
JP12223678A 1978-10-03 1978-10-03 Clock reproduction circuit Pending JPS5547751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12223678A JPS5547751A (en) 1978-10-03 1978-10-03 Clock reproduction circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12223678A JPS5547751A (en) 1978-10-03 1978-10-03 Clock reproduction circuit

Publications (1)

Publication Number Publication Date
JPS5547751A true JPS5547751A (en) 1980-04-04

Family

ID=14830940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12223678A Pending JPS5547751A (en) 1978-10-03 1978-10-03 Clock reproduction circuit

Country Status (1)

Country Link
JP (1) JPS5547751A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02211736A (en) * 1989-02-10 1990-08-23 Nec Corp Clock synchronizing circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02211736A (en) * 1989-02-10 1990-08-23 Nec Corp Clock synchronizing circuit

Similar Documents

Publication Publication Date Title
JPS57174927A (en) Skew adjusting circuit
JPS5547751A (en) Clock reproduction circuit
JPS52147753A (en) Switching type dc stabilized power supply
JPS5597601A (en) Driving circuit for electromagnetic valve
JPS52122451A (en) Oscillation circuit
JPS5333347A (en) Power supply circuit of switching control type
JPS5341718A (en) Converter power unit
JPS52143822A (en) Exposure control circuit for camera
JPS5534549A (en) Voltage control oscillator
JPS5295026A (en) Dc/dc converter
JPS5761325A (en) Voltage-controlled variable oscillating circuit
JPS5368154A (en) Highly stable crystal oscillator
JPS5330758A (en) Constant current power supply circuit for magnetron
JPS5339817A (en) Switching type power supply circuit
JPS53116763A (en) Crystal oscillator circuit
JPS5248922A (en) Variable phase control circuit
JPS533154A (en) Oscillation circuit of electronic watch
JPS573578A (en) Switching regulator
JPS52119152A (en) Oscillation circuit
JPS5657310A (en) Voltage control quartz oscillator
JPS5333346A (en) Controlling power supply circuit
JPS55125460A (en) Starting test method of crystal resonator
JPS5240949A (en) Oscillation frequency adjusting circuit of unstable multiple vibrator
JPS52147954A (en) Monostable circuit
JPS5386257A (en) Electronic timepiece