US3213199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for masking information
Assignee: PACIFIC-ELECTRON Corp A CA CORP
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Filing: 1962-01-02
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Granted: 1965-10-19
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 William B Snow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:16
CPC Classifications
G; G10; G10L; G10L21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A SYSTEM FOR DISGUISING SPEECH TO PREVENT THE SPEECH FROM BEING UNDERSTOOD IN A FREQUENCY RANGE DEFINING THE SPEECH, FIRST MEANS RESPONSIVE TO THE SPEECH FOR CONVERTING THE SPEECH AT EACH INSTANT INTO ELECTRICAL SIGNALS HAVING FREQUENCY CHARACTERISTICS REPRESENTING THE SPEECH, SECOND MEANS FOR PROVIDING REFERENCE SIGNALS HAVING A PARTICULAR PATTERN AT THE DIFFERENT SIGNALS CONSTITUTING THE FREQUENCY RANGE TO PROVIDE A PARTICULAR ENVELOPE, THIRD MEANS RESPONSIVE TO THE SIGNALS FROM THE FIRST MEANS AND THE SECOND MEANS AT EACH INSTANT FOR COMPARING THE SIGNALS FROM THE FIRST AND SECOND MEANS TO PRODUCE COMPLEMENTARY SIGNALS HAVING CHARACTERISTICS REPRESENTING DIFFERENCES RELATIVE TO THE PARTICULAR ENVELOPE IN THE FREQUENCY AND AMPLITUDE CHARACTERISTICS REPRESENTING DIFFERENCES RELATIVE TO THE THE SPEECH, AND FOURTH MEANS RESPONSIVE TO THE COMPLEMENTARY SIGNALS FOR CONVERTING SUCH SIGNALS INTO SOUNDS HAVING CHARACTERISTICS CORRESPONDING TO THOSE OF THE COMPLEMENTARY SIGNALS FOR COMBINATION WITH THE SPEECH.
Claim 2
Dependent Claim
146 words
IN A SYSTEM FOR DISGUISING SPEECH TO PREVENT THE SPEECH FROM BEING UNDERSTOOD IN A FREQUENCY RANGE DEFINING THE SPEECH, FIRST MEANS RESPONSIVE TO THE SPEECH FOR CONVERTING THE SPEECH AT EACH INSTANT INTO ELECTRICAL SIGNALS HAVING FREQUENCY CHARACTERISTICS REPRESENTING THE SPEECH, SECOND MEANS FOR PROVIDING REFERENCE SIGNALS HAVING A PARTICULAR PATTERN AT THE DIFFERENT SIGNALS CONSTITUTING THE FREQUENCY RANGE TO PROVIDE A PARTICULAR ENVELOPE, THIRD MEANS RESPONSIVE TO THE SIGNALS FROM THE FIRST MEANS AND THE SECOND MEANS AT EACH INSTANT FOR COMPARING THE SIGNALS FROM THE FIRST AND SECOND MEANS TO PRODUCE COMPLEMENTARY SIGNALS HAVING CHARACTERISTICS REPRESENTING DIFFERENCES RELATIVE TO THE PARTICULAR ENVELOPE IN THE FREQUENCY AND AMPLITUDE CHARACTERISTICS REPRESENTING DIFFERENCES RELATIVE TO THE THE SPEECH, AND FOURTH MEANS RESPONSIVE TO THE COMPLEMENTARY SIGNALS FOR CONVERTING SUCH SIGNALS INTO SOUNDS HAVING CHARACTERISTICS CORRESPONDING TO THOSE OF THE COMPLEMENTARY SIGNALS FOR COMBINATION WITH THE SPEECH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |