JPS5516575A - Sending method for digital signal - Google Patents

Sending method for digital signal

Info

Publication number
JPS5516575A
JPS5516575A JP8967678A JP8967678A JPS5516575A JP S5516575 A JPS5516575 A JP S5516575A JP 8967678 A JP8967678 A JP 8967678A JP 8967678 A JP8967678 A JP 8967678A JP S5516575 A JPS5516575 A JP S5516575A
Authority
JP
Japan
Prior art keywords
transmission
sec
pulses
interval
reception
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
JP8967678A
Other languages
Japanese (ja)
Inventor
Hiroshi Kobayashi
Kazuharu Nishitani
Shinji Suda
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 JP8967678A priority Critical patent/JPS5516575A/en
Publication of JPS5516575A publication Critical patent/JPS5516575A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/026—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse time characteristics modulation, e.g. width, position, interval

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To widen the allowable range of a reference frequency and also to reduce power consumption by sending digital signals while distinguishing between both pieces of information of ''0'' and ''1'' judging from an interval between two pulses and then by modulating those pulses at a specific frequency. CONSTITUTION:Transmission circuit 1 converts the transmission instruction into a transmission code as shown in the figure, and it is modulated into a photo signal by light emitting diode 3 before being transmitted. At the reception side, the transmitted photo signal is detected by photo diode 4 and sent to reception circuit 2, which decodes the transmission instruction by judging the pulse interval of the transmission signal. For example, it is only required here to judge that the pulse interval of pulses of 2m sec in interval is less than 3m sec at the reception side and that of pulses of 4m sec is more than 3m sec, so that allowable ranges of reference frequencies of the transmission and reception sides.
JP8967678A 1978-07-21 1978-07-21 Sending method for digital signal Pending JPS5516575A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8967678A JPS5516575A (en) 1978-07-21 1978-07-21 Sending method for digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8967678A JPS5516575A (en) 1978-07-21 1978-07-21 Sending method for digital signal

Publications (1)

Publication Number Publication Date
JPS5516575A true JPS5516575A (en) 1980-02-05

Family

ID=13977346

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8967678A Pending JPS5516575A (en) 1978-07-21 1978-07-21 Sending method for digital signal

Country Status (1)

Country Link
JP (1) JPS5516575A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007080679A1 (en) * 2006-01-13 2007-07-19 Smk Corporation Pulse modulation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007080679A1 (en) * 2006-01-13 2007-07-19 Smk Corporation Pulse modulation method
US7800518B2 (en) 2006-01-13 2010-09-21 Smk Corporation Pulse modulation method

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