US4571641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information recording device
Assignee: Canon Inc
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Filing: 1985-06-11
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Granted: 1986-02-18
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Expires: 2005-06-11
Abstract
Abstract An information recording device by means of which the information signal such as the picture signal, the sound signal and others are recorded on a recording medium and the information reproduced from the recording medium on which the information has been registered and that from other sources is recorded again on the same recording medium selectively either individually or mixed.
Inventors
- 👤 Makoto Fujiki
- 👤 Makoto Takayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:12
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/02; G11B27/022; G11B27/029; H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N9/83; H04N9/835; H04N9/8355; G11B2220/00; G11B2220/90; G11B27/024
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
212 words
A video tape recorder comprising: (a) mixing means for mixing a video signal and a first audio signal to form a composite signal; (b) first recording means for recording the composite signal on a first area of a magnetic tape, said first recording means including at least one rotating head; (c) first reproducing means for reproducing the composite signal from the first area of the magnetic tape; (d) separation means for separating the first audio signal and the video signal from the composite signal reproduced by said first reproducing means; (e) second recording means for recording a second audio signal on a second area of the magnetic tape, said second recording means including a fixed head; (f) second reproducing means for reproducing the second audio signal from the second area of the magnetic tape; and (g) output control means for setting the output mode of the recorder at least to the following two modes: a first output mode by which only the video signal separated by said separation means and the first audio signal separated by said separation means are simultaneously output; and a second output mode by which only the video signal separated by said separation means and the second audio signal reproduced by said second reproducing means are simultaneously output.
Claim 2
Dependent Claim
212 words
A video tape recorder comprising: (a) mixing means for mixing a video signal and a first audio signal to form a composite signal; (b) first recording means for recording the composite signal on a first area of a magnetic tape, said first recording means including at least one rotating head; (c) first reproducing means for reproducing the composite signal from the first area of the magnetic tape; (d) separation means for separating the first audio signal and the video signal from the composite signal reproduced by said first reproducing means; (e) second recording means for recording a second audio signal on a second area of the magnetic tape, said second recording means including a fixed head; (f) second reproducing means for reproducing the second audio signal from the second area of the magnetic tape; and (g) output control means for setting the output mode of the recorder at least to the following two modes: a first output mode by which only the video signal separated by said separation means and the first audio signal separated by said separation means are simultaneously output; and a second output mode by which only the video signal separated by said separation means and the second audio signal reproduced by said second reproducing means are simultaneously output.
Claim 3
Dependent Claim
31 words
A recorder according to claim 1, wherein said output control means includes a wave detection circuit which detects the wave of the second audio signal reproduced by said second reproducing means.
Claim 4
Dependent Claim
19 words
A recorder according to claim 1, further comprising moving means for moving the magnetic tape in its longitudinal direction.
Claim 5
Dependent Claim
33 words
A recorder according to claim 3, wherein the first area of the magnetic tape and the second area of the magnetic tape are respectively continuous in the longitudinal direction of the magnetic tape.
Claim 6
Dependent Claim
18 words
A recorder according to claim 4, wherein the rotating head traces the first area in an oblique direction.
Claim 7
Dependent Claim
224 words
A video tape recorder comprising: (a) frequency modulation means for frequency modulating a first audio signal; (b) mixing means for mixing a video signal and the frequency modulated first audio signal to form a composite signal; (c) first recording means for recording the composite signal on a first area of a magnetic tape; (d) first recording means for reproducing the composite signal from the first area of the magnetic tape; (e) separation means for separating the frequency modulated first audio signal and the video signal from the composite signal reproduced by said first reproducing means; (f) demodulation means for frequency demodulating the first audio signal separated by said separation means; (g) second recording means for recording a second audio signal on a second area of the magnetic tape; (h) second reproducing means for reproducing the second audio signal from the second area of the magnetic tape and (i) output control means for setting the output mode of the recorder at least to the following two modes: a first output mode by which only the video signal separated by said separation means and the first audio signal demodulated by said demodulation means are simultaneously output; and a second output mode by which only the video signal separated by said separation means and the second audio signal reproduced by said second reproducing means are simultaneously output.
Claim 8
Dependent Claim
224 words
A video tape recorder comprising: (a) frequency modulation means for frequency modulating a first audio signal; (b) mixing means for mixing a video signal and the frequency modulated first audio signal to form a composite signal; (c) first recording means for recording the composite signal on a first area of a magnetic tape; (d) first recording means for reproducing the composite signal from the first area of the magnetic tape; (e) separation means for separating the frequency modulated first audio signal and the video signal from the composite signal reproduced by said first reproducing means; (f) demodulation means for frequency demodulating the first audio signal separated by said separation means; (g) second recording means for recording a second audio signal on a second area of the magnetic tape; (h) second reproducing means for reproducing the second audio signal from the second area of the magnetic tape and (i) output control means for setting the output mode of the recorder at least to the following two modes: a first output mode by which only the video signal separated by said separation means and the first audio signal demodulated by said demodulation means are simultaneously output; and a second output mode by which only the video signal separated by said separation means and the second audio signal reproduced by said second reproducing means are simultaneously output.
Claim 9
Dependent Claim
133 words
A video tape recorder comprising: (a) frequency modulation means for frequency modulating a first audio signal; (b) first recording means for recording the frequency modulated first audio signal and a video signal on a first area of a magnetic tape, said first recording means including at least one rotating head; (c) reproducing means for reproducing the video signal from the first area of the magnetic tape; (d) input means for inputting a second audio signal; (e) adding means for forming a bias-added audio signal by adding a bias signal to an audio signal including the second audio signal; and (f) second recording means for recording the bias-added audio signal on a second area of the magnetic tape, said second recording means being operable when the video signal is reproduced by said reproducing means.
Claim 10
Dependent Claim
133 words
A video tape recorder comprising: (a) frequency modulation means for frequency modulating a first audio signal; (b) first recording means for recording the frequency modulated first audio signal and a video signal on a first area of a magnetic tape, said first recording means including at least one rotating head; (c) reproducing means for reproducing the video signal from the first area of the magnetic tape; (d) input means for inputting a second audio signal; (e) adding means for forming a bias-added audio signal by adding a bias signal to an audio signal including the second audio signal; and (f) second recording means for recording the bias-added audio signal on a second area of the magnetic tape, said second recording means being operable when the video signal is reproduced by said reproducing means.
Claim 11
Dependent Claim
36 words
A recorder according to claim 7, wherein said reproducing means is able to reproduce the first audio signal and said second recording means is operable when the first audio signal is reproduced by said reproducing means.
Claim 12
Dependent Claim
114 words
A video tape recorder comprising: (a) mixing means for mixing a video signal and a first audio signal to form a composite signal; (b) first recording means for recording the composite signal on a first area of a magnetic tape, said first recording means including at least one rotating head; (c) reproducing means for reproducing the composite signal from the first area of the magnetic tape; (d) input means for inputting a second audio signal; and (e) second recording means for recording an audio signal including the second audio signal on a second area of the mangetic tape, said second recording means being operable when the composite signal is reproduced by said reproducing means.
Claim 13
Dependent Claim
114 words
A video tape recorder comprising: (a) mixing means for mixing a video signal and a first audio signal to form a composite signal; (b) first recording means for recording the composite signal on a first area of a magnetic tape, said first recording means including at least one rotating head; (c) reproducing means for reproducing the composite signal from the first area of the magnetic tape; (d) input means for inputting a second audio signal; and (e) second recording means for recording an audio signal including the second audio signal on a second area of the mangetic tape, said second recording means being operable when the composite signal is 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) | 1989-02-17 | 1989-08-19 | 1990-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-17 | 1993-08-19 | 1994-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-17 | 1997-08-19 | 1998-02-18 | $7700.00 | Window Closed / Lapsed |