JPS5791044A - Multidirection multiplex radio communication system - Google Patents

Multidirection multiplex radio communication system

Info

Publication number
JPS5791044A
JPS5791044A JP16719480A JP16719480A JPS5791044A JP S5791044 A JPS5791044 A JP S5791044A JP 16719480 A JP16719480 A JP 16719480A JP 16719480 A JP16719480 A JP 16719480A JP S5791044 A JPS5791044 A JP S5791044A
Authority
JP
Japan
Prior art keywords
information
signal
audio signal
band
audio
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
JP16719480A
Other languages
Japanese (ja)
Inventor
Shigeru Fujioka
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16719480A priority Critical patent/JPS5791044A/en
Publication of JPS5791044A publication Critical patent/JPS5791044A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals

Abstract

PURPOSE:To transmit audio and information signals at a station or between two stations at the same time, by transmitting an audio signal through eliminating the center band flat in phase characteristic in the transmission band and transmitting the information signal at the center band. CONSTITUTION:An audio signal from a telephone set 1 is applied to a hybrid circuit 3 via a band block filter 2 in voice of e.g., 300-1,000Hz and 2.5- 3.4kHz. On the other hand, the information signal having the frequency component of 1.1-2.3kHz reaches the circuit 3 via a BPF8 from a transmission section of an information signal transmission/reception device 7, synthesized with the audio signal, branched at the hybrid circuit 4 and transmitted from a terminal 5. When the synthesis signal between the audio and information signals is received from a terminal 6, it reaches the circuits 4, 3 and branched, and the audio signal is applied to a telephone set 1 via the filter 2. The information signal is applied to the reception section of the device 7 via the BPF8. Thus, while keeping the naturality of audio signal, articulation and quality of information, the simultaneous transmission of voice and information can be made with less occupied band of electromagnetic waves.
JP16719480A 1980-11-26 1980-11-26 Multidirection multiplex radio communication system Pending JPS5791044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16719480A JPS5791044A (en) 1980-11-26 1980-11-26 Multidirection multiplex radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16719480A JPS5791044A (en) 1980-11-26 1980-11-26 Multidirection multiplex radio communication system

Publications (1)

Publication Number Publication Date
JPS5791044A true JPS5791044A (en) 1982-06-07

Family

ID=15845164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16719480A Pending JPS5791044A (en) 1980-11-26 1980-11-26 Multidirection multiplex radio communication system

Country Status (1)

Country Link
JP (1) JPS5791044A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52112216A (en) * 1976-03-17 1977-09-20 Kokusai Denshin Denwa Co Ltd Complex communication system made by dividing frequency range

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52112216A (en) * 1976-03-17 1977-09-20 Kokusai Denshin Denwa Co Ltd Complex communication system made by dividing frequency range

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