JPS60251746A - Communication method - Google Patents

Communication method

Info

Publication number
JPS60251746A
JPS60251746A JP10803384A JP10803384A JPS60251746A JP S60251746 A JPS60251746 A JP S60251746A JP 10803384 A JP10803384 A JP 10803384A JP 10803384 A JP10803384 A JP 10803384A JP S60251746 A JPS60251746 A JP S60251746A
Authority
JP
Japan
Prior art keywords
high
low
digital signals
m2
pulses
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
JP10803384A
Inventor
Makoto Yamamoto
Original Assignee
Anpuru Softwear 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 Anpuru Softwear Kk filed Critical Anpuru Softwear Kk
Priority to JP10803384A priority Critical patent/JPS60251746A/en
Publication of JPS60251746A publication Critical patent/JPS60251746A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/38Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40Transmitting circuits; Receiving circuits
    • H04L25/49Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4902Pulse width modulation; Pulse position modulation

Abstract

PURPOSE:To attain high-speed communication by transmitting a pulse of a prescribed level having different length in response to the combination of a prescribed number of digital signals. CONSTITUTION:Computers C1, C2 are connected via acoustic couplers M1, M2 and a telephone line 1 to transmit/receive digital signals of high/low levels. Four kinds of combinations of high/low (a), high/high (c), low/low (e) and low/high (g) are obtained from 2 bits of the digital signal, the acoustic couplers M1, M2 convet them into four kinds of pulses b, d, f, h of prescribed level but different length and transmit the result. The pulses are converted into digital signals of high/low levels at reception. Thus, the transmission speed is increased.
JP10803384A 1984-05-28 1984-05-28 Communication method Pending JPS60251746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10803384A JPS60251746A (en) 1984-05-28 1984-05-28 Communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10803384A JPS60251746A (en) 1984-05-28 1984-05-28 Communication method

Publications (1)

Publication Number Publication Date
JPS60251746A true JPS60251746A (en) 1985-12-12

Family

ID=14474244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10803384A Pending JPS60251746A (en) 1984-05-28 1984-05-28 Communication method

Country Status (1)

Country Link
JP (1) JPS60251746A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2497606A (en) * 2011-12-14 2013-06-19 Wolfson Ltd Transmission of multiple audio data streams using pulse length modulation
US9424849B2 (en) 2011-12-14 2016-08-23 Cirrus Logic, Inc. Data transfer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2497606A (en) * 2011-12-14 2013-06-19 Wolfson Ltd Transmission of multiple audio data streams using pulse length modulation
US9424849B2 (en) 2011-12-14 2016-08-23 Cirrus Logic, Inc. Data transfer
GB2497606B (en) * 2011-12-14 2018-12-19 Cirrus Logic Int Semiconductor Ltd Data transfer

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