US3095472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video recording system and method
Assignee: Ampex Corp
•
Filing: 1958-06-02
•
Granted: 1963-06-25
•
Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Ray M Dolby
- 👤 Louis J Kabell
- 👤 Howard E Murphy
- 👤 Harold L Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:30
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N5/00; H04N5/76; H04N5/91; H04N5/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A MAGNETIC RECORDING SYSTEM WHEREIN A COMPOSITE COLOR VIDEO SIGNAL, INCLUDING A COLOR BURST SIGNAL, IS RECORDED ON A MAGNETIC MEDIUM AND IS SUBJECT TO FREQUENCY AND PHASE ERRORS COMPRISING: MEANS FOR DERIVING THE COLOR BURST SIGNAL FROM THE VIDEO SIGNAL DURING THE RECORD MODE; MEANS FOR TRANSFORMING THE FREQUENCY OF THE BURST SIGNAL TO A FREQUENCY OUTSIDE THE BAND OF THE COLOR
Claim 2
Dependent Claim
63 words
A MAGNETIC RECORDING SYSTEM WHEREIN A COMPOSITE COLOR VIDEO SIGNAL, INCLUDING A COLOR BURST SIGNAL, IS RECORDED ON A MAGNETIC MEDIUM AND IS SUBJECT TO FREQUENCY AND PHASE ERRORS COMPRISING: MEANS FOR DERIVING THE COLOR BURST SIGNAL FROM THE VIDEO SIGNAL DURING THE RECORD MODE; MEANS FOR TRANSFORMING THE FREQUENCY OF THE BURST SIGNAL TO A FREQUENCY OUTSIDE THE BAND OF THE COLOR
References Cited (Backward Citations)
US2028232A
Cited
US2892017A
Cited
US2816162A
Cited
US2909596A
Cited
US3019291A
Cited
US2823255A
Cited
US2892022A
Cited
US2954441A
Cited
US2960563A
Cited
US2921976A
Cited
US2979558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |