EP0600677A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Cinefilm and recording and reproduction thereof
Assignee: Sony Corp
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Filing: 1993-11-26
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Granted: —
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Expires: 2013-11-26
Abstract
Abstract A cinefilm (1) has an image recording area (2) in which an image is recorded, a perforation section (3) for film feed, and digital pattern data recording areas (5, 6) provided in the vicinity of the perforation section (3). Plural channels of audio data are recorded as digital patterns in the digital pattern data recording areas (5, 6).
Inventors
- 👤 Shunji C/O Intellectual Property Div. Yoshimura
- 👤 Isao C/O Intellectual Property Div. Ichimura
- 👤 Yoshiyuki C/O Intellectual Property Div. Akiyama
- 👤 Toshio C/O Intellectual Property Div. Watanabe
- 👤 Kiyoshi C/O Intellectual Property Div. Ohsato
- 👤 Shinji Intellectual Property Div. Katsuramoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 00:02
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G03; G03B; G03B31/00; G03B31/02; G11B20/10527; G11B20/12; G11B20/1261; G11B20/14; G11B20/1403; G11B20/1423; G11B20/1426; G11B20/18; G11B20/1806; G11B20/1813; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B7/00; G11B7/002; G11B7/003; G11B7/0032; H; H04; H04R; H04R5/00; G11B20/00007
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
80 words
A cinefilm comprising: an image recording area (2) having a plurality of images consecutively recorded thereon; a perforation section (3) provided on at least one side of the image recording area (2) for sequentially feeding the cinefilm (1) during image projection; and a digital pattern recording area (5, 6) provided in the vicinity of the or each said perforation section (3), audio data being recorded as a digital pattern in the or each said digital pattern recording area (5, 6).
Claim 2
Dependent Claim
33 words
A cinefilm as claimed in claim 1, wherein said digital pattern recording area (5, 6) includes an audio data recording area (12; 201) and a tracking pattern recording area (10, 11; 202, 203).
Claim 3
Dependent Claim
64 words
A cinefilm as claimed in claim 2, wherein a respective said tracking pattern recording area (10, 11; 202, 203) is arrayed on each side of said audio data recording area (12; 201) and wherein a tracking pattern recorded in one of the tracking pattern recording areas is shifted a pre-set amount relative to the tracking pattern recorded in the other tracking pattern recording area.
Claim 4
Dependent Claim
46 words
A cinefilm as claimed in claim 2, wherein dot strings arrayed parallel to data tracks of said audio data recording area are recorded as vertical synchronization patterns in a spaced apart relation at dephased positions with respect to the data tracks of said data recording area.
Claim 5
Dependent Claim
26 words
A cinefilm as claimed in claim 4, wherein said vertical synchronization patterns are recorded at plural positions in the tracking pattern recording area with variable phases.
Claim 6
Dependent Claim
29 words
A cinefilm as claimed in claim 4 or claim 5, wherein a respective said tracking pattern recording area is provided on each side of the audio data recording area.
Claim 7
Dependent Claim
36 words
A cinefilm as claimed in claim 2, wherein dot strings arrayed in a direction normal to data tracks in said audio data recording area are recorded in said tracking pattern recording area as horizontal synchronization patterns.
Claim 8
Dependent Claim
25 words
A cinefilm as claimed in claim 7, wherein said horizontal synchronization pattern is recorded at each of plural positions in the tracking pattern recording area.
Claim 9
Dependent Claim
26 words
A cinefilm as claimed in claim 8, wherein a respective said tracking pattern, recording area is provided on each side of said audio data recording area.
Claim 10
Dependent Claim
29 words
A cinefilm as claimed in any one of the preceding claims, wherein audio data of plural channels are recorded as data-compressed digital patterns in said digital pattern recording area.
Claim 11
Dependent Claim
37 words
A cinefilm as claimed in claim 10, wherein data-compressed audio data and appended data are recorded by 8 to 9 conversion in said digital pattern recording area as a digital pattern indicating 1-byte data by nine dots.
Claim 12
Dependent Claim
36 words
A cinefilm as claimed in claim 11, wherein audio data and appended data are recorded in the digital pattern recording area so that 1-byte data is indicated as a two-dimensional 3 x 3 dot digital pattern.
Claim 13
Dependent Claim
16 words
A cinefilm as claimed in claim 12, wherein said appended data comprising an error correction code.
Claim 14
Dependent Claim
40 words
A cinefilm as claimed in claim 13, wherein said digital pattern recording area is so arranged that 80 dots make up a track and 16 tracks make up a block with a block sync track being provided in each block.
Claim 15
Dependent Claim
32 words
A cinefilm as claimed in claim 13, wherein a pre-set number of tracks makes up one block and the same block sync pattern is recorded at the leading end of each block.
Claim 16
Dependent Claim
41 words
A cinefilm as claimed in claim 15, wherein said digital pattern recording area is so arranged that 88 dots make up a track and 48 tracks make up a block with a three-track block sync track being provided in each block.
Claim 17
Dependent Claim
100 words
A recording device for a cinefilm, the device comprising: a conversion circuit section (51A, 51B) for converting plural-channel audio data into dot-pattern data by data compression; and a spatial modulating section (60A, 60B) for optically modulating recording light in accordance with the dot-pattern data produced by said converting circuit section (51A, 51B); the recording device being so operative that said plural-channel audio data is recorded by said modulated recording light from said spatial modulating section as a digital pattern in a digital pattern recording area (5, 6) provided in the vicinity of a perforation section (3) of the cinefilm (1).
Claim 18
Dependent Claim
49 words
A recording device as claimed in claim 17, comprising an optical recording means (81) for optically recording analog audio signals on an analog audio track or tracks (4) of the cinefilm (1), the recording device being so operative that said analog audio signals and audio data are recorded simultaneously.
Claim 19
Dependent Claim
45 words
A recording device as claimed in claim 17 or claim 18, wherein said conversion circuit section (51A, 51B) is operative to convert data-compressed audio data and appended data by 8 to 9 conversion into dot-pattern data in which 1-byte data is indicated by 9 dots.
Claim 20
Dependent Claim
41 words
A recording device as claimed in claim 19, wherein said conversion circuit section (51A, 51B) is operative to convert data-compressed audio data and appended data into dot pattern data in which 1-byte data is indicated by two-dimensional 3 x 3 dots.
Claim 21
Dependent Claim
17 words
A recording device as claimed in claim 20, wherein said appended data comprises error correction code data.
Claim 22
Dependent Claim
58 words
A recording device as claimed in claim 21, which is so operative that plural-channel audio data are recorded as digital patterns in a digital pattern recording area (5, 6) of the cinefilm (1) in which 80 dots make up a track and 16 tracks make up a block with a block sync track being provided for each block.
Claim 23
Dependent Claim
58 words
A recording device as claimed in claim 21, which is so operative that plural-channel audio data are recorded as digital patterns in a digital pattern recording area (5, 6) of the cinefilm (1) in which 88 dots make up a track and 48 tracks make up a block with three block sync tracks being provided for each block.
Claim 24
Independent Claim
73 words
A device for reproducing audio information recorded along with consecutive images on a cinefilm (1), the device comprising: an audio data reproducing circuit section (92A, 92B) for reproducing an audio data area of a digital pattern in a digital pattern recording area of the cinefilm (1) in which the audio information is recorded; and a tracking pattern reproducing circuit section for reproducing a tracking pattern recording area in said digital pattern recording area.
Claim 25
Dependent Claim
73 words
A device as claimed in claim 24, for reproducing a cinefilm (1) in which at least two of the tracking pattern recording areas are provided at a pre-set distance, wherein said tracking pattern reproducing circuit section is operative to perform tracking by taking advantage of the difference information between a tracking pattern recorded in one of the tracking pattern recording areas and a tracking pattern recorded in the other tracking pattern recording area.
Claim 26
Dependent Claim
72 words
A device as claimed in claim 24, for reproducing a cinefilm in which the tracking pattern recording area includes a vertical synchronization pattern recorded at dephased positions relative to data tracks in the audio data area, said vertical synchronization pattern comprising dot strings arrayed parallel to the tracks, wherein said tracking pattern reproducing circuit section is operative to perform tracking based on the vertical synchronizing pattern in said tracking pattern recording area.
Claim 27
Independent Claim
88 words
A device for reproducing audio information recorded along with consecutive images on a cinefilm (1), the device comprising: a digital pattern readout section for optically reading a digital pattern in a digital pattern recording area of the cinefilm (1) in which the audio information is recorded; and a reproducing section for reproducing compressed audio data and appended data from dot pattern data produced by reading of the digital pattern by said digital pattern readout section, and expanding said compressed audio data for reproducing audio data of respective channels.
Claim 28
Dependent Claim
36 words
A device as claimed in claim 27, wherein said reproducing section is operative to reproduce data-compressed audio data and appended data by 9-8 conversion from dot-pattern data in which 1-byte data is indicated by 9 dots.
Claim 29
Dependent Claim
39 words
A device as claimed in claim 28, wherein said reproducing section is operative to reproduce data-compressed audio data and appended data by 9-8 conversion from two-dimensional dot-pattern data in which 1-byte data is indicated by 3 x 3 dots.
Claim 30
Dependent Claim
31 words
A device as claimed in claim 28, wherein said appended data comprises error correction code data and wherein said reproducing section is operative to perform error correction on reproduced audio data.
Claim 31
Dependent Claim
49 words
A device as claimed in claim 30, which is operative to reproduce plural-channel audio data from a digital pattern recording area of the cinefilm in which 80 dots make up a track and 16 tracks make up a block with a block sync track being provided for each block.
Claim 32
Dependent Claim
49 words
A device as claimed in claim 30, which is operative to reproduce plural-channel audio data from a digital pattern recording area of the cinefilm in which 88 dots make up a track and 48 tracks make up a block with three block sync tracks being provided for each block.
References Cited (Backward Citations)
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