JPS558122A - Synchronizer - Google Patents

Synchronizer

Info

Publication number
JPS558122A
JPS558122A JP8012678A JP8012678A JPS558122A JP S558122 A JPS558122 A JP S558122A JP 8012678 A JP8012678 A JP 8012678A JP 8012678 A JP8012678 A JP 8012678A JP S558122 A JPS558122 A JP S558122A
Authority
JP
Japan
Prior art keywords
signal
synchronous
aural
signals
transmission
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
JP8012678A
Other languages
Japanese (ja)
Inventor
Tsutomu Hayase
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 JP8012678A priority Critical patent/JPS558122A/en
Publication of JPS558122A publication Critical patent/JPS558122A/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
    • H04L7/04—Speed or phase control by synchronisation signals

Landscapes

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

Abstract

PURPOSE:To ensure a highly efficient transfer of the synchronous signals by detecting the time duration having no aural signal at the transmission side, inserting the synchronous signal into the time duration band for transmission and detecting and deleting the synchronous signal to obtain the original aural signal at the reception side. CONSTITUTION:At the transmission side, aural signal detector 6 detects the presence or absence of the aural signals, decision circuit 7 decides the time duration having no aural signal obtained through detector 6, and synchronous signal generator 5 generates the synchronous signals with the fixed intervals. When the time duration having no aural signal obtained at circuit 7 becomes larger than the time duration of the synchronous signal, the synchronous signal is inserted into the time band having no aural signal to be transmitted in the form of the transmission signal. While at the reception side, synchronous signal detector 12 detects the synchronous signals among the transmission signals, and the obtained synchronous signals are delected 10 to reproduce the original aural signal. Thus, a highly efficient transfer is ensured for the synchronous signals without enhancing the clock accuracy so much nor lowering the quantity of the transmission information.
JP8012678A 1978-06-30 1978-06-30 Synchronizer Pending JPS558122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8012678A JPS558122A (en) 1978-06-30 1978-06-30 Synchronizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8012678A JPS558122A (en) 1978-06-30 1978-06-30 Synchronizer

Publications (1)

Publication Number Publication Date
JPS558122A true JPS558122A (en) 1980-01-21

Family

ID=13709515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8012678A Pending JPS558122A (en) 1978-06-30 1978-06-30 Synchronizer

Country Status (1)

Country Link
JP (1) JPS558122A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5087511A (en) * 1973-12-06 1975-07-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5087511A (en) * 1973-12-06 1975-07-14

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