US5091805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for recording and/or reproducing a digital signal
Assignee: Sony Corp
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Filing: 1988-10-25
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Granted: 1992-02-25
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Expires: 2008-10-25
Abstract
Abstract An apparatus and method for recording and/or reproducing digital data employing a DAT (digital audio tape recorder) adapted to record and/or reproduce data from a computer or the like in accordance with the DAT format. Main data is recorded in a main area of a track while error detecting data for the main data recorded in the main area of the track is recorded in a sub-area of the track to thereby easily detect an error in the main data.
Inventors
- 👤 Kentaro Odaka
- 👤 Shinya Ozaki
- 👤 Yoshizumi Inazawa
- 👤 Masaki Yamada
- 👤 Hiroshi Ishibashi
- 👤 Tatsuya Iijima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:19
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B27/00; G11B27/02; G11B27/031; G11B27/036; G11B20/12; G11B20/1201; G11B20/1207; G11B20/1209; G11B20/18; G11B20/1806; G11B20/1809; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; G11B2220/00; G11B2220/90; G11B2220/91; G11B2220/913; G11B27/032
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
An apparatus for recording a digital signal containing a plurality of blocks of digital data, each block including one grouping of main information data and sub-codes in a track formed on a recording medium, comprising: means for forming in each track a single main area for recording the main information data and at both ends of each track separate sub-areas for recording the sub-codes of a block of the digital data, such that the main area is located between the sub-areas, and means for generating check data for detecting an error in the data recorded in the main area and recording the check data in one of the sub-areas of each track.
Claim 2
Independent Claim
112 words
An apparatus for recording a digital signal containing a plurality of blocks of digital data, each block including one grouping of main information data and sub-codes in a track formed on a recording medium, comprising: means for forming in each track a single main area for recording the main information data and at both ends of each track separate sub-areas for recording the sub-codes of a block of the digital data, such that the main area is located between the sub-areas, and means for generating check data for detecting an error in the data recorded in the main area and recording the check data in one of the sub-areas of each track.
Claim 3
Dependent Claim
111 words
An apparatus for recording a digital signal according to claim 1 wherein the means for forming the main and sub-areas in the track include a rotary head type tape recorder of the type having rotary drum mounted, first and second rotary heads having respective corresponding azimuth angles from each other for scanning the magnetic tape and recording the data in first and second recording tracks recorded on the magnetic tape at different azimuth angles from each other in an oblique direction relative to the running direction of the magnetic tape, with one frame of data being formed of the data recorded in each pair of the first and second recording tracks.
Claim 4
Dependent Claim
38 words
An apparatus for recording a digital signal according to claim 1, wherein the means for generating the check data generates it by exclusive ORing the main information data to be recorded in the main area of each track.
Claim 5
Dependent Claim
29 words
An apparatus for recording a digital signal according to claim 1 further including means for recording in the main area a number indicative of the sequence of the tracks.
Claim 6
Independent Claim
30 words
An apparatus for recording a digital signal according to claims 1 or 4 further including means for recording in the sub-area an absolute number indicative of the sequence of tracks.
Claim 7
Independent Claim
112 words
A method for recording a digital signal containing blocks of digital data, each block including a single grouping of main information data and sub-codes in a track formed on a recording medium, comprising the steps of: forming in each track a single main area for recording the main information data and at both ends of each track separate sub-areas for recording the sub-codes of PG,22 a block of digital data, such that the main area is located between the sub-areas, and for each track, generating check data for detecting an error in the data recorded in the main area and recording the check data in one of the sub-areas of the track.
Claim 8
Independent Claim
112 words
A method for recording a digital signal containing blocks of digital data, each block including a single grouping of main information data and sub-codes in a track formed on a recording medium, comprising the steps of: forming in each track a single main area for recording the main information data and at both ends of each track separate sub-areas for recording the sub-codes of PG,22 a block of digital data, such that the main area is located between the sub-areas, and for each track, generating check data for detecting an error in the data recorded in the main area and recording the check data in one of the sub-areas of the track.
Claim 9
Dependent Claim
115 words
A method for recording a digital signal according to claim 6 wherein the step of forming the main and sub-areas in the track includes the step of using a rotary head type tape recorder of the type having rotary drum mounted, first and second rotary heads having respective corresponding azimuth angles from each other for scanning the magnetic tape and recording the data in first and second recording tracks recorded on the magnetic tape at different azimuth angles from each other in an oblique direction relative to the running direction of the magnetic tape, with one frame of data being formed on the data recorded in each pair of the first and second recording tracks.
Claim 10
Dependent Claim
36 words
A method for recording a digital signal according to claim 6, wherein the step of generating the check data includes the step of exclusive ORing the main information data recorded in main area of the track.
Claim 11
Dependent Claim
29 words
A method for recording a digital signal according to claim 6 further including the step of recording a number indicative of the sequence of tracks in the main area.
Claim 12
Independent Claim
31 words
A method for recording a digital signal according to claims 6 or 9 further including the step of recording an absolute number indicative of the sequence of tracks in the sub-area.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |