JPS6222294B2 - - Google Patents

Info

Publication number
JPS6222294B2
JPS6222294B2 JP57032106A JP3210682A JPS6222294B2 JP S6222294 B2 JPS6222294 B2 JP S6222294B2 JP 57032106 A JP57032106 A JP 57032106A JP 3210682 A JP3210682 A JP 3210682A JP S6222294 B2 JPS6222294 B2 JP S6222294B2
Authority
JP
Japan
Prior art keywords
analog
spectrum
switch
signal
capacitor filter
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.)
Expired
Application number
JP57032106A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58148541A (ja
Inventor
Atsushi Tajima
Katsumi Kobayashi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP3210682A priority Critical patent/JPS58148541A/ja
Publication of JPS58148541A publication Critical patent/JPS58148541A/ja
Publication of JPS6222294B2 publication Critical patent/JPS6222294B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
JP3210682A 1982-03-01 1982-03-01 秘話回路 Granted JPS58148541A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3210682A JPS58148541A (ja) 1982-03-01 1982-03-01 秘話回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3210682A JPS58148541A (ja) 1982-03-01 1982-03-01 秘話回路

Publications (2)

Publication Number Publication Date
JPS58148541A JPS58148541A (ja) 1983-09-03
JPS6222294B2 true JPS6222294B2 (enrdf_load_stackoverflow) 1987-05-18

Family

ID=12349639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3210682A Granted JPS58148541A (ja) 1982-03-01 1982-03-01 秘話回路

Country Status (1)

Country Link
JP (1) JPS58148541A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127059U (ja) * 1984-01-31 1985-08-27 ソニー株式会社 送受信装置における秘話回路
JPH01233935A (ja) * 1988-03-15 1989-09-19 Sony Corp スイッチトキャパシタフィルタを用いたスペクトル反転秘話装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS=1981 *

Also Published As

Publication number Publication date
JPS58148541A (ja) 1983-09-03

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