Patent US5212600A successfully refreshed from Google Patents.
US5212600A
Expired / Lapsed
US
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Digital video tape recorder with time base correction of input video signals
Assignee: Sony Corp
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Filing: 1990-12-19
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Granted: 1993-05-18
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Expires: 2010-12-19
Abstract
Abstract A digital video tape recorder for digitally recording and/or reproducing a video signal. An analog video signal is received and converted to a digital signal which is supplied to a time base corrector for correcting a time base error in the input video signal by writing the digital signal into a memory in response to a synchronizing signal derived from the input video signal and reading out the stored digital signal from the memory in response to a reference signal. The output signal of the timebase corrector is processed and recorded on a magnetic tape by a rotary head.
Inventors
- 👤 Keiji Kanota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:02
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/926; H04N5/93; H04N5/94; H04N5/945; H04N5/95; H04N5/956
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
238 words
A digital video tape recording and reproducing apparatus, comprising: analog-to-digital converter means for converting an input video signal into a corresponding digital video signal; time base corrector means for correcting a time base error in said input video signal including a memory, means for writing said digital video signal in said memory in response to a first synchronizing signal derived from said input video signal, means for generating a first reference signal and means for reading out a time base corrected digital video signal from said memory in response to said first reference signal; means for processing the time base corrected digital video signal read from said memory and for supplying a recordable time base corrected digital video signal; means including a rotary head for recording the recordable time base corrected digital video signal on a magnetic tape; means including said rotary head for reproducing the digital video signal recorded on said magnetic tape; means for writing said reproduced digital video signal in said memory in response to a second synchronizing signal derived from said reproduced digital video signal; means for generating a second reference signal; means for reading out the reproduced digital video signal from said memory as a time base corrected reproduced digital video signal in response to said second reference signal; and digital-to-analog converter means for converting the time base corrected reproduced digital video signal read from said memory into an analog output video signal.
Claim 2
Dependent Claim
238 words
A digital video tape recording and reproducing apparatus, comprising: analog-to-digital converter means for converting an input video signal into a corresponding digital video signal; time base corrector means for correcting a time base error in said input video signal including a memory, means for writing said digital video signal in said memory in response to a first synchronizing signal derived from said input video signal, means for generating a first reference signal and means for reading out a time base corrected digital video signal from said memory in response to said first reference signal; means for processing the time base corrected digital video signal read from said memory and for supplying a recordable time base corrected digital video signal; means including a rotary head for recording the recordable time base corrected digital video signal on a magnetic tape; means including said rotary head for reproducing the digital video signal recorded on said magnetic tape; means for writing said reproduced digital video signal in said memory in response to a second synchronizing signal derived from said reproduced digital video signal; means for generating a second reference signal; means for reading out the reproduced digital video signal from said memory as a time base corrected reproduced digital video signal in response to said second reference signal; and digital-to-analog converter means for converting the time base corrected reproduced digital video signal read from said memory into an analog output video signal.
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) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |