JPS5715560A - Data signal suppressing system - Google Patents

Data signal suppressing system

Info

Publication number
JPS5715560A
JPS5715560A JP8920580A JP8920580A JPS5715560A JP S5715560 A JPS5715560 A JP S5715560A JP 8920580 A JP8920580 A JP 8920580A JP 8920580 A JP8920580 A JP 8920580A JP S5715560 A JPS5715560 A JP S5715560A
Authority
JP
Japan
Prior art keywords
audio
low level
content
bit
data
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.)
Granted
Application number
JP8920580A
Other languages
Japanese (ja)
Other versions
JPS6251547B2 (en
Inventor
Takao Kato
Tetsuo Takemura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55089205A priority Critical patent/JPS6251547B2/ja
Publication of JPS5715560A publication Critical patent/JPS5715560A/en
Publication of JPS6251547B2 publication Critical patent/JPS6251547B2/ja
Expired 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

Abstract

PURPOSE:To prevent the adverse effect on audio channel due to the mixture of data signals, by converting a plurality of bits corresponding to the audio/data identifying bit in advance to one of low level audio signals compulsively. CONSTITUTION:When an audio/data identifying V/D bit is 1, that is, a data is displayed, a flip-flop 202 is se to 1, a gate 301 in turned off and a gate 302 is turned on. Further, a 64kb/s signal of a lead 101 is thrown away and the content of a low level audio signal generating circuit 401 is sequentially outputted with the clock in 64kHz through the gates 302, 303 to an output register 501. On the other hand, the bit pattern of the low level audio signal selected not giving any hindrance to the audio channel is tored to the content of the circuit 401 and since it is looped back through a lead 402, the same content can be outputted repetitively with a given period at all times.
JP55089205A 1980-07-02 1980-07-02 Expired JPS6251547B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55089205A JPS6251547B2 (en) 1980-07-02 1980-07-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55089205A JPS6251547B2 (en) 1980-07-02 1980-07-02

Publications (2)

Publication Number Publication Date
JPS5715560A true JPS5715560A (en) 1982-01-26
JPS6251547B2 JPS6251547B2 (en) 1987-10-30

Family

ID=13964208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55089205A Expired JPS6251547B2 (en) 1980-07-02 1980-07-02

Country Status (1)

Country Link
JP (1) JPS6251547B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04324726A (en) * 1991-04-24 1992-11-13 Sanyo Electric Co Ltd Radio telephone system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04324726A (en) * 1991-04-24 1992-11-13 Sanyo Electric Co Ltd Radio telephone system

Also Published As

Publication number Publication date
JPS6251547B2 (en) 1987-10-30

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