JPS5535523A - Data transmission system by manual pushing key operation - Google Patents

Data transmission system by manual pushing key operation

Info

Publication number
JPS5535523A
JPS5535523A JP10840278A JP10840278A JPS5535523A JP S5535523 A JPS5535523 A JP S5535523A JP 10840278 A JP10840278 A JP 10840278A JP 10840278 A JP10840278 A JP 10840278A JP S5535523 A JPS5535523 A JP S5535523A
Authority
JP
Japan
Prior art keywords
signal
time
data transmission
send
transmission system
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
JP10840278A
Other languages
Japanese (ja)
Inventor
Takashi Mikajiri
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.)
KOKUYOU DENKI KOGYO KK
Original Assignee
KOKUYOU DENKI KOGYO KK
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 KOKUYOU DENKI KOGYO KK filed Critical KOKUYOU DENKI KOGYO KK
Priority to JP10840278A priority Critical patent/JPS5535523A/en
Publication of JPS5535523A publication Critical patent/JPS5535523A/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
    • H04M11/066—Telephone sets adapted for data transmision

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE:To prevnet a transmission error by causing a signal length to be constant even when key depressing time became long when data transmission is implemented by a telephone set in a normal dial system utilizing a phone coupler and a keyboard. CONSTITUTION:In this system, it has been arranged that even when key depressing time became long, within a specified time set in the range between not less than MIN. signal send time Tm and not greater than its 2 times(2Tm), namely, send of an electric signal(data signal) corresponding to a key code depressed within the signal send time Ts will be terminated. That is to say, Tm<=Ts<2Tm. According to a engineering standard, MIN. send time being 50ms, it becomes 50ms<= Ts< 100ms. It is recommeded to set Ts 1.5 Tm or thereabout.
JP10840278A 1978-09-04 1978-09-04 Data transmission system by manual pushing key operation Pending JPS5535523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10840278A JPS5535523A (en) 1978-09-04 1978-09-04 Data transmission system by manual pushing key operation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10840278A JPS5535523A (en) 1978-09-04 1978-09-04 Data transmission system by manual pushing key operation

Publications (1)

Publication Number Publication Date
JPS5535523A true JPS5535523A (en) 1980-03-12

Family

ID=14483837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10840278A Pending JPS5535523A (en) 1978-09-04 1978-09-04 Data transmission system by manual pushing key operation

Country Status (1)

Country Link
JP (1) JPS5535523A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110202A (en) * 1974-02-05 1975-08-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110202A (en) * 1974-02-05 1975-08-30

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