US5122899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and reproducing apparatus
Assignee: Canon Inc
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Filing: 1991-07-25
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Granted: 1992-06-16
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Expires: 2011-07-25
Abstract
Abstract A recording and reproducing apparatus which is arranged to shorten a stand-by period and to suppress the appearance of noises comprises: a selection circuit arranged to select either a recording mode or a reproducing mode; and a control circuit which is arranged to operate, accxording to the result of detection of tracks on a recording medium, to shift a head to a vacant track on the medium when the recording mode is selected by the selection circuit, to shift the head to a recorded track on the medium when the reproducing mode is selected and to accomplish the shifting operation within a blanking period of a video signal.
Inventors
- 👤 Toshio Kaji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:26
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/781; G; G11; G11B; G11B19/00; G11B19/02; Y; Y10; Y10S; Y10S358/00; Y10S358/906
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
A recording and reproducing apparatus, comprising: (a) a head for effecting recording or reproducing operation; and (b) mode setting means for setting a recording mode which enables a recording operation by said head or a reproducing mode which enables a reproducing operation by said head, in which after an image signal including an image period and a blanking period has been recorded on a recording medium, the mode is changed over from said recording mode to said reproducing mode during a period when said head is tracing an area where the blanking period of the image signal h as been recorded on said recording medium.
Claim 2
Dependent Claim
105 words
A recording and reproducing apparatus, comprising: (a) a head for effecting recording or reproducing operation; and (b) mode setting means for setting a recording mode which enables a recording operation by said head or a reproducing mode which enables a reproducing operation by said head, in which after an image signal including an image period and a blanking period has been recorded on a recording medium, the mode is changed over from said recording mode to said reproducing mode during a period when said head is tracing an area where the blanking period of the image signal h as been recorded on said recording medium.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1, wherein said blanking period is the vertical blanking period of said video signal.
Claim 4
Dependent Claim
41 words
An apparatus according to claim 1, wherein said mode setting means includes a switching element which is arranged to shift said head into a recordable state and another switching element which is arranged to shift said head into a reproducible state.
Claim 5
Dependent Claim
30 words
An apparatus according to claim 1, wherein said mode setting means is arranged to displace said head following change-over of the state of head between said recordable and reproducible states.
Claim 6
Dependent Claim
226 words
A recording and reproducing apparatus, comprising: (A) a head for effecting recording and reproducing operation; (B) operation mode designating means or designating either a recording mode or a reproducing mode; (C) discriminating means for discriminating whether an area on a recording medium which is being traced by said head is in recorded state or in non-recorded state; (D) head shifting means for producing a shift of said head to a non-recorded area on the recording medium in the case where the recording mode is designated by said operation mode designating means and the recorded state is discriminated as a result of discrimination effected by said discriminating means, for producing a shift of said head to a recorded area on the recording medium in the case where the reproducing mode is designated by said operation mode designating means and the non-recorded state is discriminated as the result of discrimination effected by said discriminating means, and for producing no shift of said head in the case where the recording mode is designated by said operation mode designating means and the non-recorded state is discriminated as the result of discrimination effected by said discriminating means and in the case where the reproducing m ode is designated by said operation mode designating means and the recorded state is discriminated as the result of discrimination effected by said said discriminating means.
Claim 7
Dependent Claim
226 words
A recording and reproducing apparatus, comprising: (A) a head for effecting recording and reproducing operation; (B) operation mode designating means or designating either a recording mode or a reproducing mode; (C) discriminating means for discriminating whether an area on a recording medium which is being traced by said head is in recorded state or in non-recorded state; (D) head shifting means for producing a shift of said head to a non-recorded area on the recording medium in the case where the recording mode is designated by said operation mode designating means and the recorded state is discriminated as a result of discrimination effected by said discriminating means, for producing a shift of said head to a recorded area on the recording medium in the case where the reproducing mode is designated by said operation mode designating means and the non-recorded state is discriminated as the result of discrimination effected by said discriminating means, and for producing no shift of said head in the case where the recording mode is designated by said operation mode designating means and the non-recorded state is discriminated as the result of discrimination effected by said discriminating means and in the case where the reproducing m ode is designated by said operation mode designating means and the recorded state is discriminated as the result of discrimination effected by said said discriminating means.
Claim 8
Dependent Claim
57 words
An apparatus according to claim 5, wherein said discriminating means is arranged to discriminate whether the area on the recording medium which is being traced by said head is in the recorded state or in the non-recorded state, in accordance with a level of an envelope of a signal reproduced by said head from the recording medium.
Claim 9
Dependent Claim
35 words
An apparatus according to claim 5, wherein said head records an image signal including an image period and a blanking period on said recording medium or reproduces said image signal recorded on said recording medium.
Claim 10
Dependent Claim
76 words
An apparatus according to claim 7, further comprising: operation mode changing over means for changing over the operation of said head from the recording mode to the reproducing m ode during the blanking period of the image signal recording on the area of t he recording medium which is being traced by said head, when the operation mode designated by said operation mode designating means is changed over from the recording mode to the reproducing mode.
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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) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |