JPS5635559A - Phase modulating device - Google Patents

Phase modulating device

Info

Publication number
JPS5635559A
JPS5635559A JP11019479A JP11019479A JPS5635559A JP S5635559 A JPS5635559 A JP S5635559A JP 11019479 A JP11019479 A JP 11019479A JP 11019479 A JP11019479 A JP 11019479A JP S5635559 A JPS5635559 A JP S5635559A
Authority
JP
Japan
Prior art keywords
frequencies
supplied
circuit
phase
frequency
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
JP11019479A
Other languages
Japanese (ja)
Inventor
Hiroyuki Masuda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11019479A priority Critical patent/JPS5635559A/en
Publication of JPS5635559A publication Critical patent/JPS5635559A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/2057—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases with a separate carrier for each phase state

Landscapes

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

Abstract

PURPOSE:To secure a common use for both the phase modulating circuit and the band pass filter even in the different frequencies, by processing the extent of the phase change according to the difference of the carrier frequencies. CONSTITUTION:The DC input data signal is supplied to the code converting circuit 21 which performs the sampling and then the code conversion, and thus the 1st information to give the extent of the phase change plus the complementary 2nd information are obtained. Either one of the two informtion is selected through the 1st switch circuit 22 and then supplied to the digital phase modulating circuit 24 to be supplied to the band pass filter 25 after a phase modulation with the frequency f0 of oscillator 23. Here if the necessary carrier frequencies are defined as F1 and F2, the frequencies f2 and f3 of the oscillators 26 and 27 are turned into f0-F1 and f0-F2 each. And either one of the two oscillation frequencies is selected through the 2nd switch circuit 28. Then a frequency modulation is given to the output of the filter 25 through the frequency modulating circuit 29.
JP11019479A 1979-08-31 1979-08-31 Phase modulating device Pending JPS5635559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11019479A JPS5635559A (en) 1979-08-31 1979-08-31 Phase modulating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11019479A JPS5635559A (en) 1979-08-31 1979-08-31 Phase modulating device

Publications (1)

Publication Number Publication Date
JPS5635559A true JPS5635559A (en) 1981-04-08

Family

ID=14529425

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11019479A Pending JPS5635559A (en) 1979-08-31 1979-08-31 Phase modulating device

Country Status (1)

Country Link
JP (1) JPS5635559A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051074U (en) * 1983-09-16 1985-04-10 コニカ株式会社 photo album mount
JPS6183972U (en) * 1984-11-09 1986-06-03

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051074U (en) * 1983-09-16 1985-04-10 コニカ株式会社 photo album mount
JPS6183972U (en) * 1984-11-09 1986-06-03

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