JPH0355062B2 - - Google Patents
Info
- Publication number
- JPH0355062B2 JPH0355062B2 JP8683685A JP8683685A JPH0355062B2 JP H0355062 B2 JPH0355062 B2 JP H0355062B2 JP 8683685 A JP8683685 A JP 8683685A JP 8683685 A JP8683685 A JP 8683685A JP H0355062 B2 JPH0355062 B2 JP H0355062B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- local
- signal
- spectrum
- circuit
- 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
Links
- 238000004891 communication Methods 0.000 claims description 19
- 230000005236 sound signal Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000000284 extract Substances 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 description 31
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8683685A JPS61244144A (ja) | 1985-04-23 | 1985-04-23 | 秘話装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8683685A JPS61244144A (ja) | 1985-04-23 | 1985-04-23 | 秘話装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61244144A JPS61244144A (ja) | 1986-10-30 |
| JPH0355062B2 true JPH0355062B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-08-22 |
Family
ID=13897893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8683685A Granted JPS61244144A (ja) | 1985-04-23 | 1985-04-23 | 秘話装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61244144A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5949878A (en) * | 1996-06-28 | 1999-09-07 | Transcrypt International, Inc. | Method and apparatus for providing voice privacy in electronic communication systems |
| US5796838A (en) * | 1996-08-02 | 1998-08-18 | Transcrypt International, Inc. | Method and apparatus for performing frequency spectrum inversion |
-
1985
- 1985-04-23 JP JP8683685A patent/JPS61244144A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61244144A (ja) | 1986-10-30 |