JPS5624841A - Signal transmitting system for modem with multiplexer - Google Patents

Signal transmitting system for modem with multiplexer

Info

Publication number
JPS5624841A
JPS5624841A JP10042879A JP10042879A JPS5624841A JP S5624841 A JPS5624841 A JP S5624841A JP 10042879 A JP10042879 A JP 10042879A JP 10042879 A JP10042879 A JP 10042879A JP S5624841 A JPS5624841 A JP S5624841A
Authority
JP
Japan
Prior art keywords
symbol point
circuit
synchronous
singular
given
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
JP10042879A
Other languages
Japanese (ja)
Inventor
Masaki Kitamura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10042879A priority Critical patent/JPS5624841A/en
Publication of JPS5624841A publication Critical patent/JPS5624841A/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
    • H04L7/06—Speed or phase control by synchronisation signals the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length
    • H04L7/065—Speed or phase control by synchronisation signals the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length and superimposed by modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To ensure both the synchronous setup and the checking for the channel, by carrying out the transmission with the modulation given at the singular symbol point with the Baud rate with every cycle of an optional integer-fold value and then at the normal symbol point with other Baud rates respectively. CONSTITUTION:The phase modulation is given at the singular symbol point every time output 8 of dividing circuit 22 which is delivered with every fixed cycle, e.g., the 8-Baud rate timing is obtained. This phase-modulated signal is sent to reception part 30 from transmission part 20 via circuit 7. Demodulating circuit 31 carries out the decoding of the received data. And synchronous setting circuit 33 generates the synchronous signal when the supplied amplitude value exceeds the limit level, i.e., when the singular symbol point transmitted every 8-Baus rate is detected.
JP10042879A 1979-08-07 1979-08-07 Signal transmitting system for modem with multiplexer Pending JPS5624841A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10042879A JPS5624841A (en) 1979-08-07 1979-08-07 Signal transmitting system for modem with multiplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10042879A JPS5624841A (en) 1979-08-07 1979-08-07 Signal transmitting system for modem with multiplexer

Publications (1)

Publication Number Publication Date
JPS5624841A true JPS5624841A (en) 1981-03-10

Family

ID=14273679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10042879A Pending JPS5624841A (en) 1979-08-07 1979-08-07 Signal transmitting system for modem with multiplexer

Country Status (1)

Country Link
JP (1) JPS5624841A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57207460A (en) * 1981-06-15 1982-12-20 Nec Corp Communication equipment with sub-signal channel
JPH04233347A (en) * 1990-05-29 1992-08-21 American Teleph & Telegr Co <Att> Method and apparatus for generating signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57207460A (en) * 1981-06-15 1982-12-20 Nec Corp Communication equipment with sub-signal channel
JPH04233347A (en) * 1990-05-29 1992-08-21 American Teleph & Telegr Co <Att> Method and apparatus for generating signal

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