US4562489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording of digital data
Assignee: Harman International Industries Inc
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Filing: 1984-08-24
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Granted: 1985-12-31
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Expires: 2004-08-24
Abstract
Abstract A multitrack tape recorder records and replays digital data on a plurality of data tracks (15) by way of record/replay electronics (7), a record head (5) and a replay head (6). Channels (8) corresponding to the tape track (15) are provided for input to and output from the electronics (7). An additional channel (11) carries auxiliary data related to the signals in the channels (8). This data is formatted during recording by the electronics (7) into a block format compatible with the data format on channels (15) and is recorded on a separate dedicated track (16). The auxiliary information may be formatted in labels each of which has an instruction field and a parameter field. The labels can carry a wide variety of information relating to operation of the system. As one example, a label may contain in the instruction field an instruction to increase the playback gain by an amount contained in the parameter field.
Inventors
- 👤 Philip S. Gaskell
- 👤 Roger Lagadec
- 👤 Guy W. McNally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:20
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00086; G11B20/0021; G11B20/10; G11B20/10527; G11B20/12; G11B20/1201; G11B20/1202; G11B20/1204; G11B27/00; G11B27/02; G11B27/031; G11B27/036; G11B27/10; G11B27/102; G11B27/107; G11B27/19; G11B27/28; G11B27/32; G11B27/322; G11B27/324; G11B27/325; G11B2020/10537; G11B2020/10546; G11B2220/00; G11B2220/20; G11B2220/90; G11B2220/91; G11B2220/913; G11B27/032
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
109 words
Apparatus for recording digital primary data corresponding to signals transmitted through one or more input data channels and recorded on one or more tracks on a recording medium, characterised by means responsive to auxiliary data attached to said primary data, said auxiliary data consisting of control instructions and information related to the said digital primary data, said means carrying out record/reading operations of said auxiliary data on at least one separate track on the recording medium and executing instructions acting upon said digital primary data and said means establishing a formatted structure for the auxiliary data related to the structure of the digital primary data corresponding to the signals.
Claim 2
Dependent Claim
109 words
Apparatus for recording digital primary data corresponding to signals transmitted through one or more input data channels and recorded on one or more tracks on a recording medium, characterised by means responsive to auxiliary data attached to said primary data, said auxiliary data consisting of control instructions and information related to the said digital primary data, said means carrying out record/reading operations of said auxiliary data on at least one separate track on the recording medium and executing instructions acting upon said digital primary data and said means establishing a formatted structure for the auxiliary data related to the structure of the digital primary data corresponding to the signals.
Claim 3
Dependent Claim
21 words
Apparatus according to claim 1, characterised in that the data structure comprises a data block subdivided into a plurality of labels.
Claim 4
Dependent Claim
29 words
Apparatus according to claim 1, characterised by a data rate for the auxiliary data related to the data rate of users' data according to the corresponding AES/EBU transmission format.
Claim 5
Dependent Claim
20 words
Apparatus according to claim 2, characterised in that each label is subdivided into an identification field and a parameter field.
Claim 6
Dependent Claim
24 words
Apparatus according to claim 3, characterised in that the identification field is arranged for indicating classes of labels corresponding to different labels of applications.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 4, characterised in that the identification field is arranged for indicating a label priority.
Claim 8
Dependent Claim
18 words
Apparatus according to claim 4, characterised in that the identification field is arranged for indicating a security level.
Claim 9
Dependent Claim
24 words
Apparatus according to claim 4, characterised in that the identification field is arranged for indicating a countdown corresponding to locations on the recording medium.
Claim 10
Dependent Claim
17 words
Apparatus according to claim 4, characterised in that the identification field is arranged for indicating individual instructions.
Claim 11
Dependent Claim
26 words
Apparatus according to claim 2, characterised in that the labels are formatted with a preamble, a modulation code and additional information for protection and error detection.
Claim 12
Dependent Claim
23 words
Apparatus according to claim 3, characterised in that the labels are subdivided into an integral number of subwords, which are interleaved on recording.
Claim 13
Dependent Claim
21 words
Apparatus according to claim 2, characterised in that at least some labels are repeated on the dedicated track for increased safety.
Claim 14
Dependent Claim
27 words
Apparatus according to claim 2, characterised in that the labels are sequentially arranged and formatted with preamble, overwrite detection, error detection, correction information and interleaving of subwords.
Claim 15
Dependent Claim
27 words
Apparatus according to claim 1, characterised by a single dedicated track carrying auxiliary data for a plurality of tracks carrying digital data on the same recording medium.
Claim 16
Dependent Claim
28 words
Apparatus according to claim 1, characterised by a plurality of dedicated tracks carrying auxiliary data for all of the tracks carrying digital data on the same recording medium.
Claim 17
Dependent Claim
15 words
Apparatus according to claim 4, characterised in that the parameter field carries alphanumerical information only.
Claim 18
Dependent Claim
24 words
Apparatus according to claim 4, characterised in that the parameter field carries information related to operational aspects of the generation of digital audio programmes.
Claim 19
Dependent Claim
16 words
Apparatus according to claim 4, characterised in that the parameter field carries compact disk subcoding information.
Claim 20
Dependent Claim
14 words
Apparatus according to claim 4, characterised in that the parameter field carries mixdown information.
Claim 21
Dependent Claim
21 words
Apparatus according to claim 4, characterised in that the parameter field carries information relating to legal property of the accompanying programme.
Claim 22
Dependent Claim
20 words
Apparatus according to claim 4, characterised in that the parameter field carries information relates to encryption of the accompanying programme.
Claim 23
Dependent Claim
22 words
Apparatus according to claim 4, characterised in that the parameter field carries information relating to compression or expansion of digital audio samples.
Claim 24
Dependent Claim
21 words
Apparatus according to claim 4, characterised in that the parameter field carries information relative to specific positions on the recording medium.
Claim 25
Dependent Claim
18 words
Apparatus according to claim 4, characterised in that the parameter field carries information specifying tape speed or acceleration.
Claim 26
Dependent Claim
22 words
Apparatus according to claim 4, characterised in that the labels contains 16 bits of identification field and 32 bits of parameter field.
Claim 27
Dependent Claim
38 words
Apparatus according to claim 25, characterised in that the identification field is divided into 4 bits for labels class, 3 bits for security level/countdown, 1 bit for frame synchronisation, 2 bits for priority and 6 bits for instruction.
Claim 28
Dependent Claim
24 words
Apparatus according to claim 1, characterised in that said means comprise an input processor, encoder/decoder means and an execution processor for said auxiliary data.
Claim 29
Dependent Claim
34 words
Apparatus according to claim 27, characterised in that said execution processor comprises an identification unit for said auxiliary data and means designed for execution of specific instructions relating to the said digital primary data.
Claim 30
Dependent Claim
20 words
Apparatus according to claim 1, characterised by means executing selectable instructions acting upon selected parts of said digital primary data.
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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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |