Patent US1781236A successfully refreshed from Google Patents.
US4899232A
Expired / Lapsed
US
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Apparatus for recording and/or reproducing digital data information
Assignee: Sony Corp
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Filing: 1988-04-05
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Granted: 1990-02-06
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Expires: 2008-04-05
Abstract
Abstract An apparatus for recording and/or reproducing digital data information on a recording medium which has a recorder similar to a digital audio recorder (DAT) which records digital signals in a frame made up of two oblique tracks formed by rotary heads and a controller for dividing the digital data information at a predetermined frame portion and supplying the divided information to the recorder as a digital signal, wherein since the digital data information are divided at the predetermined frame portion, they are easily re-recorded.
Inventors
- 👤 Kentaro Odaka
- 👤 Shinya Ozaki
- 👤 Masaki Yamada
- 👤 Hiroshi Ishibashi
- 👤 Yoshizumi Inazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:44
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1806; G11B20/1809; G11B20/10527; G11B20/12; G11B20/1201; G11B20/1207; G11B20/1209; G11B27/00; G11B27/02; G11B27/031; G11B27/036; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B20/1211; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/216; G11B2220/90; G11B2220/91; G11B2220/913
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
An apparatus for recording digital data information on a recording medium, comprising: (a) recording means for recording inputted digital signals in separate frames, each one of which is made up of two oblique tracks; and (b) control means for dividing said inputted digital data information into N frames, where N is an integer, interspersing between each such N frames of inputted digital data information a predetermined number of frames of non-inputted digital data information, and supplying the divided inputted digital data information and non-inputted digital information to said recording means whereby between every N frames of recorded inputted digital data information there are a predetermined number of frames of recorded non-inputted digital information.
Claim 2
Independent Claim
113 words
An apparatus for recording digital data information on a recording medium, comprising: (a) recording means for recording inputted digital signals in separate frames, each one of which is made up of two oblique tracks; and (b) control means for dividing said inputted digital data information into N frames, where N is an integer, interspersing between each such N frames of inputted digital data information a predetermined number of frames of non-inputted digital data information, and supplying the divided inputted digital data information and non-inputted digital information to said recording means whereby between every N frames of recorded inputted digital data information there are a predetermined number of frames of recorded non-inputted digital information.
Claim 3
Dependent Claim
50 words
An apparatus for recording digital data information on a recording medium as claimed in claim 1, wherein said control means comprise means for supplying a predetermined number of frames of a dummy signal as non-inputted digital information to said recording means between each N frames of inputted digital data information.
Claim 4
Dependent Claim
71 words
An apparatus for recording digital data information on a recording medium as claimed in claim 1, wherein said control means comprise means for generating a predetermined number of frames of an error correcting code for each group of said N frames of the digital data information; and means for supplying said error correcting code as non-inputted digital information to said recording means between each N frames of inputted digital data information.
Claim 5
Dependent Claim
47 words
An apparatus for recording digital data information on a recording medium as claimed in claim 3, further comprising means for recording separate discriminating signals for discriminating each frame in which said digital data information is recorded and each frame in which said error correcting code is recorded.
Claim 6
Dependent Claim
48 words
An apparatus for recording digital data information on a recording medium as claimed in claim 4, wherein each of said discriminating signals is recorded in a sub-area of the recording medium different from a main area of the recording medium in which said digital data information is recorded.
Claim 7
Dependent Claim
132 words
An apparatus for recording digital data information on a recording medium as claimed in claim 4, further comprising: reproducing means for reproducing digital signals and said discriminating signal recorded in the oblique tracks; first error correcting means for correcting errors in the reproduced digital signals; means for generating a syndrome for correcting errors on the basis of said reproduced discriminating signal; means for halting the output of the reproduced digital signals when an error which cannot be corrected by said first error correcting means occurs in said reproduced digital signal; means for reproducing recorded digital signals again after said syndrome has been generated; and outputting means for correcting said error occurring in said digital signal by said syndrome and for outputting said digital signal free of said error as digital data information.
References Cited (Backward Citations)
US4812924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |