JPS5656053A - Multiplex communication system for sound signal and data or picture signal - Google Patents

Multiplex communication system for sound signal and data or picture signal

Info

Publication number
JPS5656053A
JPS5656053A JP13190779A JP13190779A JPS5656053A JP S5656053 A JPS5656053 A JP S5656053A JP 13190779 A JP13190779 A JP 13190779A JP 13190779 A JP13190779 A JP 13190779A JP S5656053 A JPS5656053 A JP S5656053A
Authority
JP
Japan
Prior art keywords
frequency band
picture signal
data
width
signal
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
JP13190779A
Other languages
Japanese (ja)
Inventor
Shozo Nakamura
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP13190779A priority Critical patent/JPS5656053A/en
Publication of JPS5656053A publication Critical patent/JPS5656053A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To transmit data or a picture signal with a little deterioration in the quality of communication by reducing the width of the frequency band of a block having a higher sound frequency component and by using a frequency band that becomes unnecessary as a result of the reduction in frequency band width. CONSTITUTION:A sound signal for a telephone call is separated into two blocks through LPF2 and HPF3. Then, one block having a lower frequency component is transmitted with the nearly equal width of the frequency band. On the other hand, the width of the frequency band of the other block having a higher frequency component is reduced 4 and a frequency band that becomes unnecessary as a result of the reduction of the frequency band is utilized to transmit data or a picture signal. Thus, the data or picture signal can effectively be transmitted with a little deterioration in the quality of the talk of sound communication.
JP13190779A 1979-10-15 1979-10-15 Multiplex communication system for sound signal and data or picture signal Pending JPS5656053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13190779A JPS5656053A (en) 1979-10-15 1979-10-15 Multiplex communication system for sound signal and data or picture signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13190779A JPS5656053A (en) 1979-10-15 1979-10-15 Multiplex communication system for sound signal and data or picture signal

Publications (1)

Publication Number Publication Date
JPS5656053A true JPS5656053A (en) 1981-05-16

Family

ID=15068953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13190779A Pending JPS5656053A (en) 1979-10-15 1979-10-15 Multiplex communication system for sound signal and data or picture signal

Country Status (1)

Country Link
JP (1) JPS5656053A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948158U (en) * 1982-09-20 1984-03-30 三洋電機株式会社 Audio band transmission equipment
US5150365A (en) * 1986-11-18 1992-09-22 Hitachi, Ltd. Communication system for coexistent base band and broad band signals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948158U (en) * 1982-09-20 1984-03-30 三洋電機株式会社 Audio band transmission equipment
US5150365A (en) * 1986-11-18 1992-09-22 Hitachi, Ltd. Communication system for coexistent base band and broad band signals

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