US5010424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording apparatus for an information signal with a plural kinds of pilot signals using a plurality of heads
Assignee: Canon Inc
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Filing: 1989-05-10
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Granted: 1991-04-23
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Expires: 2009-05-10
Abstract
Abstract A multi-channel recording apparatus in which n rotary heads (n is 3 or higher integer) are arranged on the outer peripheral edge of a drum is evenly spaced relation, and a tape-shaped recording medium is trained round the drum over an angular range of at least 360°×(1-1/n), while recording (n-1) channels of a signal on the recording medium by using the (n-1) of the n heads which are simultaneously tracing on the medium.
Inventors
- 👤 Masahide Hasegawa
- 👤 Mitsuhiro Otokawa
- 👤 Hidetoshi Matsuoka
- 👤 Noritsugu Hirata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:04
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/008; G11B5/00813; G11B5/00847; G11B5/0086; G11B5/00865; G11B15/00; G11B15/02; G11B15/05; G11B15/087; G11B15/18; G11B15/1808; G11B15/1875; G11B15/46; G11B15/467; G11B15/4673; G11B15/4675; G11B15/4676; G11B15/4677; G11B15/4678; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/917; H04N5/919
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
158 words
A recording apparatus, comprising: (a) a cylinder member having n rotary heads (where n is an integer of not less than 3) on its outer peripheral surface to rotate with a phase difference of (360/n)° from each other; (b) a tape guide member training a tape-shaped recording medium around said cylinder member over an angular range of not less than (360(n-1)/n)°; (c) producing means for producing n kinds of pilot signals having different frequencies from one another; (d) input means for inputting an information signal; (e) recording means for recording said n kinds of pilot signals and said information signal on the medium, said recording means including first supply means for supplying said information signal to said n rotary heads in turn, and second supply means for supplying said n kinds of pilot signals to said n rotary heads, each of said n kinds of pilot signals unchangeably supplying only a predetermined one of said n rotary heads.
Claim 2
Dependent Claim
158 words
A recording apparatus, comprising: (a) a cylinder member having n rotary heads (where n is an integer of not less than 3) on its outer peripheral surface to rotate with a phase difference of (360/n)° from each other; (b) a tape guide member training a tape-shaped recording medium around said cylinder member over an angular range of not less than (360(n-1)/n)°; (c) producing means for producing n kinds of pilot signals having different frequencies from one another; (d) input means for inputting an information signal; (e) recording means for recording said n kinds of pilot signals and said information signal on the medium, said recording means including first supply means for supplying said information signal to said n rotary heads in turn, and second supply means for supplying said n kinds of pilot signals to said n rotary heads, each of said n kinds of pilot signals unchangeably supplying only a predetermined one of said n rotary heads.
Claim 3
Dependent Claim
32 words
A recording apparatus according to claim 1, further comprising reproducing means for reproducing said n kinds of pilot signals and said information signal from the medium by using said n rotary heads.
Claim 4
Dependent Claim
28 words
A recording apparatus according to claim 2, wherein said reproducing means includes switching means for selectively output n reproduced signals reproduced by said n rotary heads in turn.
Claim 5
Dependent Claim
42 words
A recording apparatus according to claim 3, further comprising tracking control means for controlling relative positions of said n rotary heads and said recording medium by using said n kinds of pilot signals included in an output signal of said switching means.
Claim 6
Dependent Claim
130 words
A recording apparatus, comprising: (a) n rotary heads (where n is an integer of not less than 3) for rotating with a phase difference of (360/n)° from each other; (b) input means for inputting an information signal; (c) producing means for producing n kinds of pilot signals having different frequencies from one another; and (d) recording means for recording said n kinds of pilot signals and said information signal on a recording medium, said recording means including supply means for supplying said information signal to said n rotary heads in turn and for supplying said n kinds of pilot signals to said n rotary heads, one of said n kinds of pilot signals being unchangeably supplied only to a predetermined one of said n rotary heads by said supply means.
Claim 7
Dependent Claim
130 words
A recording apparatus, comprising: (a) n rotary heads (where n is an integer of not less than 3) for rotating with a phase difference of (360/n)° from each other; (b) input means for inputting an information signal; (c) producing means for producing n kinds of pilot signals having different frequencies from one another; and (d) recording means for recording said n kinds of pilot signals and said information signal on a recording medium, said recording means including supply means for supplying said information signal to said n rotary heads in turn and for supplying said n kinds of pilot signals to said n rotary heads, one of said n kinds of pilot signals being unchangeably supplied only to a predetermined one of said n rotary heads by said supply means.
Claim 8
Dependent Claim
32 words
A recording apparatus according to claim 5, further comprising reproducing means for reproducing said n kinds of pilot signals and said information signal from the medium by using said n rotary heads.
Claim 9
Dependent Claim
38 words
A recording apparatus according to claim 6, further comprising tracking control means for controlling relative positions of said n rotary heads and said recording medium by using said n kinds of pilot signals reproduced by said reproducing means.
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) | 1994-04-22 | 1994-10-22 | 1995-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-22 | 1998-10-22 | 1999-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-22 | 2002-10-22 | 2003-04-23 | $7700.00 | Window Closed / Lapsed |