Patent EP0676894A2 successfully refreshed from Google Patents.
EP0676894A2
Expired / Lapsed
EP
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Reproducing recording media
Assignee: Sony Corp
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Filing: 1995-03-30
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Granted: —
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Expires: 2015-03-30
Abstract
Abstract In a method of reproducing image data recorded on a recording medium (30) using an MPEG (Moving Picture Coding Expert Group) technique or the like, the image data including first image data where all image information for one frame in question is compressed and second image data where information on a change in image information for frames before and after the frame in question is compressed, when a predetermined portion of the image data recorded on the recording medium is to be reproduced the reproduction is started from a portion of the recording medium where the first image data is recorded.
Inventors
- 👤 Junichi C/O Intel. Property Div. Nakamura
- 👤 Kenji C/O Intel. Property Div. Tomizawa
- 👤 Yoshihiro C/O Intel. Property Div. Machiguchi
- 👤 Shuichi C/O Intel. Property Div. Nagano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 16:46
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/34; G06; G06T; G06T9/00; G06T9/004; G06T9/007; G10; G10H; G10H1/00; G10H1/0033; G10H1/0041; G10H1/36; G10H1/361; G10H1/363; G10H1/368; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/1254; G11B27/005; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B27/32; G11B27/327; G11B27/329; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; H04N5/783; H04N5/91; H04N5/92; H04N5/926; H04N5/9261; H04N5/9264; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/8042; H04N9/87; G10H2240/00; G10H2240/011; G10H2240/046; G10H2240/066; G11B20/00007; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/213; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B7/00; G11B7/002; G11B7/0037; G11B7/004; G11B7/005; G11B7/007; G11B7/013; H04N5/84; H04N5/85; H04N9/806; H04N9/8063
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
92 words
A method of reproducing a recording medium on which image data is recorded, the image data including first image data where all image information for one frame of question is compressed and second image data where information on a change in image information for frames before and after the frame of question is compressed, said method being characterized in that, when a predetermined portion in the image data recorded on said recording medium is reproduced, reproduction is started from a portion on said recording medium where said first image data is recorded.
Claim 2
Dependent Claim
62 words
A method of reproducing a recording medium according to claim 1, wherein when a read position accessed is not a position where said first image data is recorded, an access is again gained toward a direction upstream of time information on image data recorded on said recording medium, and reproduction is started from the first image data detected by again giving access.
Claim 3
Dependent Claim
64 words
A method of reproducing a recording medium according to claim 1, wherein when a read position accessed is not a position where said first image data is recorded, an access is again gained toward a direction in which time information on image data recorded on said recording medium is elapsed, and reproduction is started from the first image data detected by again giving access.
Claim 4
Dependent Claim
82 words
A method of reproducing a recording medium according to claim 1, wherein read operation of reading said first image data from said recording medium and access operation are repeated, and said first image data sequentially read from said recording medium is reproduced to execute high-speed reproduction operation, and when said first or second image data is not read from said recording medium for a predetermined period of time, said read operation from said recording medium is executed after access is gained once.
Claim 5
Dependent Claim
73 words
A method of reproducing a recording medium according to claim 1, wherein read operation of reading said first image data from said recording medium and access operation are repeated, and said first image data sequentially read from said recording medium is reproduced to execute high-speed reproduction operation, and reproduced image obtained by reproducing the first image data read from said recording medium is continuously displayed for a predetermined period of time or more.
Claim 6
Dependent Claim
69 words
A method of reproducing a recording medium according to claim 1, wherein read operation of reading said first image data from said recording medium and access operation are repeated, and said first image data sequentially read from said recording medium is reproduced to execute high-speed reproduction operation, and the first image data read from said recording medium is sequentially displayed on one display screen as a time is elapsed.
Claim 7
Dependent Claim
45 words
A method of reproducing a recording medium according to claim 6, wherein said display screen includes a plurality of display regions, and the first image data read from said recording medium is sequentially displayed on said plurality of display regions as a time is elapsed.
Claim 8
Independent Claim
131 words
A method of reproducing a recording medium on which at least one audio data and image data are recorded, the image data associated with said audio data and including first image data where all image information for one frame of question is compressed and second image data where information on a change in image information for frames before and after the frame of question is compressed, said method being characterized in that, in production audio data and image data recorded on said recording medium by giving access to a predetermined position of said recording medium, the reproduction of audio data is started from an accessed position, while the reproduction of image data is started from a portion in the vicinity of the accessed position where said first image data is recorded.
Claim 9
Dependent Claim
62 words
A method of reproducing a recording medium according to claim 8, wherein when a read position accessed is not a position where said first image data is recorded, an access is again gained toward a direction upstream of time information on image data recorded on said recording medium, and reproduction is started from the first image data detected by again giving access.
Claim 10
Dependent Claim
64 words
A method of reproducing a recording medium according to claim 9, wherein when a read position accessed is not a position where said first image data is recorded, an access is again gained toward a direction in which time information on image data recorded on said recording medium is elapsed, and reproduction is started from the first image data detected by again giving access.
Claim 11
Independent Claim
148 words
A method of reproducing a recording medium on which at least one audio data, image data and a position data are recorded, the image data associated with said audio data and including first image data where all image information for one frame of question is compressed and second image data where information on a change in image information for frames before and after the frame of question is compressed, the position data representing a position where said first image data is recorded, said method being characterized in that, in production of audio data and image data recorded on said recording medium by giving access to a predetermined position of said recording medium, the reproduction of audio data is started from an accessed position, while the reproduction of image data is started from a portion where said first image data is recorded on the basis of said position data.
Claim 12
Dependent Claim
48 words
A method of reproducing a recording medium according to claim 11, wherein when a position on said recording medium represented by said position data is a position upstream of said accessed position in view of time, the reproduction of said image information is started from said accessed position.
Claim 13
Independent Claim
148 words
An apparatus for reproducing a recording medium on which image data is recorded, the image data including first image data where all image information for one frame of question is compressed and second image data where information on a change in image information for frames before and after the frame of question is compressed, said apparatus comprising: read means for reading data recorded on said recording medium; decoding means for decoding data outputted from said read means; and control means for controlling said read means and said decoding means, said control means, when reproducing a predetermined portion in the image data recorded on said recording medium, controls the movement of said read means to gain access to a position on said recording medium where the first image data is recorded, and reproduces image data from the position on said recording medium where the first image data is recorded.
Claim 14
Dependent Claim
110 words
An apparatus for reproducing a recording medium according to claim 13, wherein said control means comprises a discriminating means for discriminating whether the first image data is contained in data from said decoding means, or not, and wherein said control means, when the output from said discriminating means represents that the first image data is not contained in data from said decoding means, again gains access in a direction upstream of time information on image data recorded on said recording medium and allows the reproduction to be started from a position on said recording medium on which the first image data is recorded, which is detected by again gaining access.
Claim 15
Dependent Claim
112 words
An apparatus for reproducing a recording medium according to claim 13, wherein said control means comprises a discriminating means for discriminating whether the first image data is contained in data from said decoding means, or not, and wherein said control means, when the output from said discriminating means represents that the first image data is not contained in data from said decoding means, again gains access in a direction in which time information on image data recorded on said recording medium is elapsed, and allows the reproduction to be started from a position on said recording medium on which the first image data is recorded, which is detected by again gaining access.
Claim 16
Dependent Claim
33 words
An apparatus for reproducing a recording medium according to claim 13, said apparatus further comprises storage means for storing at least the first image data in image data outputted from said decoding means.
Claim 17
Dependent Claim
108 words
An apparatus for reproducing a recording medium according to claim 16, wherein said control means controls said read means to repeatedly execute the read operation of reading said first image data from said recording medium and access operation, and to reproduce said first image data sequentially read from said recording medium for execution of high-speed reproduction operation, and allows the first image data read by said read means to be stored into said storage means, while selectively reading a plurality of first image data stored in said storage means so that said plurality of image data are sequentially displayed on one display screen as a time is elapsed.
Claim 18
Dependent Claim
50 words
An apparatus for reproducing a recording medium according to claim 17, wherein said storage means comprises at least one storage region for storing a plurality of first image data read by said read means, and a conversion region for generating display image data to be displayed on said display screen.
Claim 19
Independent Claim
195 words
An apparatus for reproducing a recording medium on which at least one audio data, image data and a position data are recorded, the image data associated with said audio data and including first image data where all image information for one frame of question is compressed and second image data where information on a change in image information for frames before and after the frame of question is compressed, the position data representing a position where said first image data is recorded, said apparatus comprising: read means for reading data recorded on said recording medium; decoding means for decoding data outputted from said read means; and control means for controlling said read means and said decoding means, said control means, in production of audio data and image data recorded on said recording medium by gaining access to a predetermined position of said recording medium by said read means, controls said read means and said decoding means to start the reproduction of audio data from a position accessed by said read means, while stating the reproduction of image data from a portion where said first image data is recorded on the basis of said position data.
Claim 20
Dependent Claim
71 words
An apparatus for reproducing a recording medium according to claim 19, wherein said control means allows the reproduction of said image data to be started from the accessed position on the basis of position data contained in data read by said read means, when a position on said recording medium represented by said position data is a position upstream of a position accessed by said read means in view of time.
References Cited (Backward Citations)
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