JPS52153302A - Privacy telephone set - Google Patents
Privacy telephone setInfo
- Publication number
- JPS52153302A JPS52153302A JP7076776A JP7076776A JPS52153302A JP S52153302 A JPS52153302 A JP S52153302A JP 7076776 A JP7076776 A JP 7076776A JP 7076776 A JP7076776 A JP 7076776A JP S52153302 A JPS52153302 A JP S52153302A
- Authority
- JP
- Japan
- Prior art keywords
- telephone set
- privacy telephone
- privacy
- secure
- removal
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
- H04K1/00—Secret communication
- H04K1/06—Secret communication by transmitting the information or elements thereof at unnatural speeds or in jumbled order or backwards
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7076776A JPS52153302A (en) | 1976-06-15 | 1976-06-15 | Privacy telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7076776A JPS52153302A (en) | 1976-06-15 | 1976-06-15 | Privacy telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52153302A true JPS52153302A (en) | 1977-12-20 |
Family
ID=13440986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7076776A Pending JPS52153302A (en) | 1976-06-15 | 1976-06-15 | Privacy telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52153302A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5511638A (en) * | 1978-07-11 | 1980-01-26 | Nec Corp | Privacy circuit |
JPS55145487A (en) * | 1979-04-25 | 1980-11-13 | Westinghouse Electric Corp | Communication system including digital*voice scramber and voice descrambler |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49128604A (ja) * | 1973-03-19 | 1974-12-10 | ||
GB1407196A (en) * | 1971-11-16 | 1975-09-24 | British Broadcasting Corp | Apparatus for changing signal pitch |
-
1976
- 1976-06-15 JP JP7076776A patent/JPS52153302A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1407196A (en) * | 1971-11-16 | 1975-09-24 | British Broadcasting Corp | Apparatus for changing signal pitch |
JPS49128604A (ja) * | 1973-03-19 | 1974-12-10 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5511638A (en) * | 1978-07-11 | 1980-01-26 | Nec Corp | Privacy circuit |
JPS55145487A (en) * | 1979-04-25 | 1980-11-13 | Westinghouse Electric Corp | Communication system including digital*voice scramber and voice descrambler |
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