Patent US4956726A successfully refreshed from Google Patents.
US4956726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information signal reproducing apparatus in which control signal condition and information signal level are varied so as to correspond
Assignee: Canon Inc
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Filing: 1988-12-01
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Granted: 1990-09-11
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Expires: 2008-12-01
Abstract
Abstract The disclosure recording and reproducing apparatus is arranged to have a control signal recorded in a predetermined track on a recording medium and is arranged to control the reproduced level of an audio or video signal by reproducing the control signal.
Inventors
- 👤 Hiroyuki Takimoto
- 👤 Yutaka Kohtani
- 👤 Yoshiyuki Saitoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:47
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; G; G11; G11B; G11B20/00; G11B20/10; G11B20/10009; G11B27/00; G11B27/02; G11B27/022; G11B27/024; G11B27/36; H04N9/793
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
315 words
An information signal reproducing apparatus, comprising: (a) first reproducing means for reproducing an information signal recorded in a first area extending longitudinally on a tape-shaped recording medium; (b) second reproducing means for reproducing a control signal recorded in a second area parallel with said first area on the tape-shaped recording medium; (c) control means for variably controlling a level of the information signal reproduced by said first reproducing means based on a state of the control signal reproduced by said second reproducing means; (d) recording means for recording said control signal in the second area; (e) first selecting means for variably setting the level of the information signal reproduced by said first reproduced means by manual operation; (f) second setting means for variably setting the state of said control signal being recorded by said recording means; (g) interlocking means for interlocking said first and second setting means so that the state of said control signal corresponds to the level of the information signal reproduced; and (h) mode setting means for setting a mode of the apparatus between a plurality of modes, the plurality of modes including a first mode, and a second mode, when the apparatus is in said first mode, said first corresponding means reproduces the information signal, said second reproducing means reproduces the control signal, and the level of the information signal reproduced by said first reproducing means is controlled by said control means based on the state of the control signal reproduced by said second reproducing means, and when the apparatus is in said second mode said first reproducing means reproduces the information signal, the level of the information signal reproduced by said first reproducing means is variably set by said first setting means, said reproducing means records the control signal, and the state of the control signal being recorded by said recording means is variably set by said second setting means.
Claim 2
Dependent Claim
315 words
An information signal reproducing apparatus, comprising: (a) first reproducing means for reproducing an information signal recorded in a first area extending longitudinally on a tape-shaped recording medium; (b) second reproducing means for reproducing a control signal recorded in a second area parallel with said first area on the tape-shaped recording medium; (c) control means for variably controlling a level of the information signal reproduced by said first reproducing means based on a state of the control signal reproduced by said second reproducing means; (d) recording means for recording said control signal in the second area; (e) first selecting means for variably setting the level of the information signal reproduced by said first reproduced means by manual operation; (f) second setting means for variably setting the state of said control signal being recorded by said recording means; (g) interlocking means for interlocking said first and second setting means so that the state of said control signal corresponds to the level of the information signal reproduced; and (h) mode setting means for setting a mode of the apparatus between a plurality of modes, the plurality of modes including a first mode, and a second mode, when the apparatus is in said first mode, said first corresponding means reproduces the information signal, said second reproducing means reproduces the control signal, and the level of the information signal reproduced by said first reproducing means is controlled by said control means based on the state of the control signal reproduced by said second reproducing means, and when the apparatus is in said second mode said first reproducing means reproduces the information signal, the level of the information signal reproduced by said first reproducing means is variably set by said first setting means, said reproducing means records the control signal, and the state of the control signal being recorded by said recording means is variably set by said second setting means.
Claim 3
Dependent Claim
46 words
An apparatus according to claim 1, wherein said tape-shaped recording medium has a lengthwise direction and said information signal is recorded on a plurality of tracks formed in said first area in a direction inclined with respect to the lengthwise direction of said tape-shaped recording medium.
Claim 4
Dependent Claim
30 words
An apparatus according to claim 2, wherein said control signal is recorded on a single track formed in said second area in the lengthwise direction of said tape-shaped recording medium.
Claim 5
Dependent Claim
16 words
An apparatus according to claim 2, wherein said information signal includes a frequency modulated audio signal.
Claim 6
Dependent Claim
17 words
An apparatus according to claim 2, wherein said information signal includes a pulse code modulated audio signal.
Claim 7
Dependent Claim
30 words
An apparatus according to claim 1, wherein said control signal includes a first signal of predetermined frequency and said second setting means variably sets the level of said first signal.
Claim 8
Dependent Claim
18 words
An apparatus according to claim 6, wherein said control signal further includes a second signal of predetermined frequency.
Claim 9
Dependent Claim
39 words
An apparatus according to claim 1, wherein said control means variably controls the level of said information signal reproduced by said first reproducing means in correspondence to the level of said control signal reproduced by said second reproducing means.
Claim 10
Dependent Claim
45 words
An apparatus according to claim 8, wherein said control signal includes a first signal of predetermined frequency and a second signal of predetermined frequency, and said control means includes comparison means for comparing the level of the first signal with that of the second signal.
Claim 11
Dependent Claim
75 words
An apparatus according to claim 1, wherein said information signal includes a first information signal and a second information signal, the apparatus further comprising mixing means for mixing said first information signal and said second information signal, said control means being arranged to variably control a mixing ratio of said first information signal to said second information signal in said mixing means, based on the state of said control signal reproduced by said reproducing means.
Claim 12
Dependent Claim
29 words
An apparatus according to claim 10, wherein said first information signal includes a frequency demodulated audio signal, and said second information signal includes a pulse code modulated audio signal.
Claim 13
Dependent Claim
51 words
An information signal reproducing apparatus according to claim 1, wherein the information signal is a video signal which consists of a chroma. signal and a brightness signal; and said control means is arranged to control the level of the chroma. signal of the video signal when the video signal is reproduced.
Claim 14
Dependent Claim
41 words
An information signal reproducing apparatus according to claim 1, wherein the information signal is a video signal which consists of a chroma. signal and a brightness signal; and said control means is arranged to control the level of the brightness signal.
Claim 15
Dependent Claim
17 words
An information signal reproducing apparatus according to claim 1, wherein said control signal is a digital signal.
Claim 16
Dependent Claim
31 words
An information signal reproducing apparatus according to claim 14, wherein said control signal includes a digital signal indicative of the signal to be subjected to level control by said control means.
References Cited (Backward Citations)
US29490A
Cited
US2320524A
Cited
US2797264A
Cited
US3536858A
Cited
US3932886A
Cited
US3657489A
Cited
US3839729A
Cited
USRE29490E
Cited
JPS51113635A
Cited
US4208671A
Cited
US4169219A
Cited
JPS54155022A
Cited
US4187544A
Cited
US4312020A
Cited
US4356517A
Cited
US4583134A
Cited
GB2054994A
Cited
US4363007A
Cited
US4453186A
Cited
US4430754A
Cited
US4442461A
Cited
US4480273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |