Patent US4912570A successfully refreshed from Google Patents.
US4912570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and/or reproducing device
Assignee: Canon Inc
•
Filing: 1989-06-15
•
Granted: 1990-03-27
•
Expires: 2009-06-15
Abstract
Abstract A recording and/or reproducing apparatus includes a plurality of time base changing elements arranged to perform band compression and expansion by altering the time base of an incoming signal; a switching circuit arranged to selectively change audio signals inputted into and outputted from these time base changing elements from one over to another; and a recording-and-reproducing circuit arranged to record and reproduce the band compressed audio signal on and from a recording medium.
Inventors
- 👤 Takao Kinoshita
- 👤 Kazuhiko Ito
- 👤 Shigeo Yamagata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:50
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B20/00; G11B20/00007; G11B27/00; G11B27/10; G11B27/34; H; H04; H04N; H04N1/00; H04N1/32; H04N1/32101; H04N1/32106; H04N1/32117; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N9/8205; H04N9/8211; H04N9/8216; H04N2201/00; H04N2201/32; H04N2201/3201; H04N2201/3261; H04N2201/3264
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
89 words
An apparatus for recording an audio signal on a medium, comprising: (a) a recording head; (b) driving means for driving the medium relative to said recording head, said driving means requiring a predetermined period of time after commencement of the driving operation thereof before bringing the medium and said recording head into a given recordable positional relation; and (c) a time base compressing element for compressing a given audio signal on a time base axis, said element being arranged to store the given audio signal during the predetermined period.
Claim 2
Independent Claim
89 words
An apparatus for recording an audio signal on a medium, comprising: (a) a recording head; (b) driving means for driving the medium relative to said recording head, said driving means requiring a predetermined period of time after commencement of the driving operation thereof before bringing the medium and said recording head into a given recordable positional relation; and (c) a time base compressing element for compressing a given audio signal on a time base axis, said element being arranged to store the given audio signal during the predetermined period.
Claim 3
Dependent Claim
26 words
An apparatus according to claim 1, further comprising generating means for generating said audio signal, said means being arranged to time serially generate said audio signal.
Claim 4
Dependent Claim
15 words
An apparatus according to claim 2, wherein said audio signal generating means includes a microphone.
Claim 5
Dependent Claim
24 words
An apparatus according to claim 1, wherein said medium is in a disc-like shape and said driving means is arranged to rotate said medium.
Claim 6
Dependent Claim
25 words
An apparatus according to claim 1, further comprising means for feeding an audio signal compressed by said time base compressing element to said recording head.
Claim 7
Dependent Claim
40 words
An apparatus according to claim 1, wherein said time base compressing element is arranged to effect the time base compression by changing the speed of storing the given audio signal and the speed of reading the stored given audio signal.
Claim 8
Dependent Claim
15 words
An apparatus according to claim 1, wherein said recording head is a magnetic recording head.
Claim 9
Dependent Claim
15 words
An apparatus according to claim 1, wherein the audio signal is an analog audio signal.
Claim 10
Independent Claim
144 words
An apparatus for recording an audio signal and/or an image signal on a medium, comprising: a) a recording head; b) driving means for driving the medium relative to said recording head, said driving means requiring a predetermined period of time after commencement of the driving operation thereof before bringing the medium and said recording head into a given recordable positional relation; c) signal generating means for generating an image signal to be recording by said head; d) a time base changing element for compressing a given audio signal on a time base axis, said element being arranged to store the given audio signal during the predetermined period; and e) signal supplying means for selectively supplying the image signal supplied by said signal generating means or the audio signal compressed on the time base axis by said time base changing element to said recording head.
Claim 11
Independent Claim
144 words
An apparatus for recording an audio signal and/or an image signal on a medium, comprising: a) a recording head; b) driving means for driving the medium relative to said recording head, said driving means requiring a predetermined period of time after commencement of the driving operation thereof before bringing the medium and said recording head into a given recordable positional relation; c) signal generating means for generating an image signal to be recording by said head; d) a time base changing element for compressing a given audio signal on a time base axis, said element being arranged to store the given audio signal during the predetermined period; and e) signal supplying means for selectively supplying the image signal supplied by said signal generating means or the audio signal compressed on the time base axis by said time base changing element to said recording head.
Claim 12
Dependent Claim
26 words
An apparatus according to claim 9, wherein said signal generating means generates an image signal to be recorded without being compressed on the time base axis.
Claim 13
Dependent Claim
26 words
An apparatus according to claim 9, wherein aid signal generating means includes: converting means for converting an image of an object into an image signal thereof.
Claim 14
Dependent Claim
16 words
An apparatus according to claim 9, further comprising a plurality of said time base changing elements.
Claim 15
Dependent Claim
40 words
An apparatus according to claim 9, wherein said signal supplying means includes FM modulating means for effecting FM modulation of a signal selected from the image signal and the audio signal time axis compressed by said time base changing element.
Claim 16
Dependent Claim
52 words
An apparatus according to claim 9, further comprising: detecting means for detecting whether the drive state of said driving means is in a predetermined state, wherein said signal generating means supplies the time-axis compressed audio signal compressed by said time base changing element in response to the output of said detecting means.
Claim 17
Dependent Claim
39 words
An apparatus according to claim 9, wherein said time base compressing element is arranged to effect time base compression by changing the speed of storing the given audio signal and the speed of reading the stored given audio signal.
Claim 18
Dependent Claim
15 words
An apparatus according to claim 9, wherein said recording head is a magnetic recording head.
Claim 19
Dependent Claim
15 words
An apparatus according to claim 9, wherein said recording head is a magnetic recording head.
Claim 20
Independent Claim
116 words
An apparatus for recording and/or reproducing an audio signal on a medium, comprising: a) a recording and/or reproducing head; b) driving means for driving the medium relative to said recording head, said driving means requiring a predetermined period of time after commencement of the driving operation thereof before bringing the medium and said recording head into a given recordable positionable relation; c) a time base changing element for changing a given audio signal on a time base axis, said element being arranged to store the given audio signal during the predetermined period; and d) feeding means for feeding the signal reproduced from the medium by said recording and/or reproducing head to said time base changing element.
Claim 21
Independent Claim
116 words
An apparatus for recording and/or reproducing an audio signal on a medium, comprising: a) a recording and/or reproducing head; b) driving means for driving the medium relative to said recording head, said driving means requiring a predetermined period of time after commencement of the driving operation thereof before bringing the medium and said recording head into a given recordable positionable relation; c) a time base changing element for changing a given audio signal on a time base axis, said element being arranged to store the given audio signal during the predetermined period; and d) feeding means for feeding the signal reproduced from the medium by said recording and/or reproducing head to said time base changing element.
Claim 22
Dependent Claim
29 words
An apparatus according to claim 18, wherein the time base axis is extended when the reproduced signal is fed by said feeding means to said time base changing element.
Claim 23
Dependent Claim
27 words
An apparatus according to claim 18, further comprising generating means for generating the audio signal, said generating means being arranged to time serially generate the audio signal.
Claim 24
Dependent Claim
15 words
An apparatus according to claim 20, wherein said audio signal generating means includes a microphone.
Claim 25
Dependent Claim
24 words
An apparatus according to claim 18, wherein the medium is in a disc-like shape and said driving means is arranged to rotate the medium.
Claim 26
Dependent Claim
15 words
An apparatus according to claim 18, wherein said recording head is a magnetic recording head.
Claim 27
Dependent Claim
15 words
An apparatus according to claim 18, wherein the audio signal is an analog audio signal.
Claim 28
Dependent Claim
41 words
An apparatus according to claim 18, wherein said time base changing element is arranged to effect the time base changing operation by changing the speed of storing the given audio signal and the speed of reading the stored given audio signal.
Claim 29
Dependent Claim
25 words
An apparatus according to claim 18, further comprising means for feeding the audio signal changed by said time base changing element to said recording head.
References Cited (Backward Citations)
US3828361A
Cited
US4032224A
Cited
US4449154A
Cited
US4413289A
Cited
US4620238A
Cited
US4722009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |