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US5287230A Expired / Lapsed US ⏱️ 0.0 years remaining

Video signal reproducing apparatus with index information display

Assignee: Sony Corp
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Filing: 1992-10-08
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Granted: 1994-02-15
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Expires: 2012-10-08
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Abstract

Abstract A video signal reproducing apparatus, typically an 8-mm video tape recorder, reproduces a signal recorded along inclined tracks on a magnetic video tape in a tape cassette having an erase prevention member. The video signal reproducing apparatus has an erase prevention detector for detecting whether a further signal can be recorded on the magnetic video tape or not based on the status of the erase prevention member. A reproducing circuit reproduces the recorded signal from the magnetic video tape for a predetermined period of time, typically one second, when the erase prevention detector detects that no further signal can be recorded on the magnetic video tape. An index extracting circuit extracts an index signal from the reproduced signal, and the extracted index signal is decoded by an index decoder. The decoded index information, typically a chapter number, is displayed on a television monitor in response to the depression of an index key on a control panel.

Inventors

  • 👤 Kazuya Kamide
  • 👤 Noboru Motoyoshi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 19:31
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/087; G11B20/00; G11B20/00086; G11B27/00; G11B27/10; G11B27/102; G11B27/107; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3036; G11B27/32; G11B27/327; G11B27/328; G11B27/34; G11B2220/00; G11B2220/90

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 122 words
A video signal reproducing apparatus for reproducing a signal recorded along inclined tracks on a magnetic video tape in a tape cassette having an erase prevention member, said video signal reproducing apparatus comprising: detecting means for detecting whether a further signal can be recorded on the magnetic video tape or not based on the status of the erase prevention member; reproducing means for reproducing the recorded signal from the magnetic video tape for a predetermined period of time when said detecting means detects that no further signal can be recorded on the magnetic video tape; decoding means for decoding index information contained in the reproduced signal; and displaying means for displaying the decoded index information in response to a predetermined control command.
Claim 2
Dependent Claim 122 words
A video signal reproducing apparatus for reproducing a signal recorded along inclined tracks on a magnetic video tape in a tape cassette having an erase prevention member, said video signal reproducing apparatus comprising: detecting means for detecting whether a further signal can be recorded on the magnetic video tape or not based on the status of the erase prevention member; reproducing means for reproducing the recorded signal from the magnetic video tape for a predetermined period of time when said detecting means detects that no further signal can be recorded on the magnetic video tape; decoding means for decoding index information contained in the reproduced signal; and displaying means for displaying the decoded index information in response to a predetermined control command.
Claim 3
Dependent Claim 17 words
A video signal reproducing apparatus according to claim 1, wherein said index information includes chapter number data.
Claim 4
Dependent Claim 28 words
A video signal reproducing apparatus according to claim 1, wherein said reproducing means comprises means for reproducing the recorded signal from the magnetic video tape for one second.
Claim 5
Dependent Claim 20 words
A video signal reproducing apparatus according to claim 1, further including a control panel for producing said predetermined control command.

References Cited (Backward Citations)

US4477847A Cited
US4357638A Cited
US4554651A Cited
US5148328A Cited
US4791497A Cited
US4908725A Cited
US4799111A Cited
US5177646A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1997-02-14 1997-08-16 1998-02-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2001-02-14 2001-08-16 2002-02-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2005-02-14 2005-08-16 2006-02-15 $7700.00 Window Closed / Lapsed

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