Patent US5710752A successfully refreshed from Google Patents.
US5710752A
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Apparatus using one optical sensor to recover audio information from analog and digital soundtrack carried on motion picture film
Assignee: Dolby Laboratories Licensing Corp
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Filing: 1995-06-07
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Granted: 1998-01-20
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Expires: 2015-06-07
Abstract
Abstract An apparatus recovers audio information from analog and digital motion picture film soundtracks using a single optical sensor that senses across the widths of both soundtracks. Symbols representing audio information in the digital soundtrack are encoded in two dimensions and are recovered by oversampling the symbols in two dimensions. The two-dimensional encoding of digital information can be used with a variety of recording media; however, in one embodiment, the symbols are carried on motion picture film between the sprocket holes.
Inventors
- 👤 Charles Gordon Seagrave
- 👤 Martin John Richards
- 👤 Douglas Evan Mandell
- 👤 Mark Leighton Atherton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:22
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/007; G11B7/013; G03; G03B; G03B31/00; G03B31/02; G06; G06K; G06K19/00; G06K19/06; G06K19/06009; G06K19/06037; G06K7/00; G06K7/10; G06K7/14; G06K7/1404; G06K7/1408; G06K7/1417; G06K7/1439; G06K7/1443; G11B20/00; G11B20/10; G11B20/10009; G11B20/10527; G11B20/12; G11B20/1261; G11B20/14; G11B20/1403; G11B20/1423; G11B20/1426; G11B20/18; G11B20/1806; G11B20/1809; G11B20/22; G11B20/225; G11B27/00; G11B27/36; G11B7/002; G11B7/003; G11B7/0032; G11B7/004; G11B7/005; G11B7/12; G11B7/13; G11B7/131; G11B7/135; G11B7/1384; H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/92; H04N5/9201; H04N5/9202; H04N9/00; H04N9/79; H04N9/80; H04N9/802; H04N9/82; H04N9/8205; H04N9/8233; G11B2220/00; G11B2220/20; G11B2220/90; H04N5/84; H04N5/87; H04N5/93; H04N9/87; H04N9/89
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
80 words
An apparatus for recovering audio information carried by motion picture film in an analog soundtrack and in a digital soundtrack, said apparatus comprising sample means for generating samples by sampling, output of an optical sensor sensing across widths of said analog soundtrack and said digital soundtrack, image means for forming a two-dimensional image representation in response to said samples generated along lengths or said soundtracks, and recovery means for recovering said audio information in response to said two-dimensional image representation.
Claim 2
Independent Claim
80 words
An apparatus for recovering audio information carried by motion picture film in an analog soundtrack and in a digital soundtrack, said apparatus comprising sample means for generating samples by sampling, output of an optical sensor sensing across widths of said analog soundtrack and said digital soundtrack, image means for forming a two-dimensional image representation in response to said samples generated along lengths or said soundtracks, and recovery means for recovering said audio information in response to said two-dimensional image representation.
Claim 3
Dependent Claim
19 words
An apparatus according to claim 1 further comprising a means for delaying audio information recovered by said recovery means.
Claim 4
Dependent Claim
77 words
An apparatus according to claim 1 further comprising analog processing circuitry coupled to said optical sensor so as to receive signals corresponding to said analog soundtrack, digital processing circuitry coupled to said optical sensor so as to receive signals corresponding to said digital soundtrack, and a switch switchably coupled to outputs of said analog processing circuity and said digital processing circuitry, whereby audio information may be selectively recovered from either said analog soundtrack or said digital soundtrack.
Claim 5
Dependent Claim
26 words
An apparatus according to claim 1 wherein said optical sensor has a field of view extending beyond opposite outside edges of said analog and digital soundtracks.
Claim 6
Independent Claim
45 words
An apparatus for transporting motion picture film, said film carrying audio information in an analog soundtrack and a digital soundtrack, said apparatus comprising an optical sensor mounted in proximity to said film so as to have a field of view spanning widths of both soundtracks.
Claim 7
Independent Claim
45 words
An apparatus for transporting motion picture film, said film carrying audio information in an analog soundtrack and a digital soundtrack, said apparatus comprising an optical sensor mounted in proximity to said film so as to have a field of view spanning widths of both soundtracks.
Claim 8
Dependent Claim
19 words
An apparatus according to claim 5 further comprising a delay circuit coupled to an output of said optical sensor.
Claim 9
Dependent Claim
77 words
An apparatus according to claim 5 further comprising analog processing circuitry coupled to said optical sensor so as to receive signals corresponding to said analog soundtrack, digital processing circuitry coupled to said optical sensor so as to receive signals corresponding to said digital soundtrack, and a switch switchably coupled to outputs of said analog processing circuity and said digital processing circuitry, whereby audio information may be selectively reproduced from either said analog soundtrack or said digital soundtrack.
Claim 10
Dependent Claim
22 words
An apparatus according to claim 5 wherein said field of view extends beyond opposite outside edges of said analog and digital soundtracks.
Claim 11
Independent Claim
69 words
An apparatus for transporting picture film, said film carrying audio information in an analog soundtrack and a digital soundtrack, said apparatus comprising sensor means for optically sensing said film across widths of both soundtracks, means for directing output of said sensor means such that information sensed in said analog soundtrack is directed to analog processing circuitry and information sensed in said digital soundtrack is directed to digital processing circuitry.
Claim 12
Independent Claim
69 words
An apparatus for transporting picture film, said film carrying audio information in an analog soundtrack and a digital soundtrack, said apparatus comprising sensor means for optically sensing said film across widths of both soundtracks, means for directing output of said sensor means such that information sensed in said analog soundtrack is directed to analog processing circuitry and information sensed in said digital soundtrack is directed to digital processing circuitry.
Claim 13
Dependent Claim
18 words
An apparatus according to claim 9 further comprising means for delaying said information sensed in said digital soundtrack.
Claim 14
Dependent Claim
40 words
An apparatus according to claim 9 further comprising a switch switchably coupled to outputs of said analog processing circuitry and said digital processing circuitry, whereby audio information may be selectively reproduced from either said analog soundtrack or said digital soundtrack.
Claim 15
Dependent Claim
26 words
An apparatus according to claim 9 wherein said sensor means has a field of view extending beyond opposite outside edges of said analog and digital soundtracks.
Claim 16
Dependent Claim
45 words
An apparatus according to claim 5 further comprising analog processing circuitry coupled to said optical sensor so as to receive signals corresponding to said analog soundtrack, and digital processing circuitry coupled to said optical sensor so as to receive signals corresponding to said digital soundtrack.
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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) | 2001-01-19 | 2001-07-21 | 2002-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-19 | 2005-07-21 | 2006-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-19 | 2009-07-21 | 2010-01-20 | $7700.00 | Window Closed / Lapsed |