Signal reproducing apparatus and signal reproducing method
AssigneeSony Corporation
InventorsYoshinori Shimizu, Makoto Kawamura
Life of this patent
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Abstract
DVD reproducing apparatus which enables seamless images at a plurality of angles recorded on a DVD to simultaneously be watched or instantaneously be watched even if the images are switched. The frame memory of a DVD reproducing apparatus has m display data storage regions (m is an integer) corresponding to m different images to be displayed, as well as a first decoded data storage region and a second decoded data storage region in which decoded I pictures and P pictures, that is, the decoded image data, are stored.
Claims8
Signal reproducing apparatus for use with a record medium on which images observed from different angles are recorded as coded image data comprising:
- reading means for reading said coded image data from said record medium to recover said different angles of images;
- decoding means for decoding the image data corresponding to said angles, as read by said reading means;
- decoding storage means for storing said decoded image data corresponding to said angles, one angle at a time;
- display storage means having plural storage regions, each storage region being operable to store image data corresponding to a respective angle and from which the respective angle image is displayed at an associated region of an image display device;
- and
- control means for reading and contracting said coded image data stored in said decoding storage means and writing the contracted image data of a particular one of said angles into a predetermined storage region of said display storage means, thereby enabling the image data stored in said predetermined storage region and corresponding to said particular angle to be displayed at a predetermined, associated region of said image display device, whereby contracted images at said plural angles are displayed on said image display device simultaneously;
- wherein said coded image data is intra-frame and inter-frame predictive image data corresponding to images at plural angles read from said record medium, and said decoding storage means comprises at least two decoding storage units, each for storing frames of said intra-frame or inter-frame image data following decoding thereof, to enable simultaneous reproduction of said contracted images at plural angles in both forward and reverse directions.
Signal reproducing apparatus for use with a record medium on which images observed from different angles are recorded as coded image data comprising:
- reading means for reading said coded image data from said record medium to recover said different angles of images;
- a plurality m storage means for storing the coded image data read by said reading means;
- and
- decoding means for decoding the image data corresponding to respective angles, as read by said reading means and as stored in said m storage means, said decoding means comprising m image decoders to produce decoded image data corresponding to m angles, respectively;
- and at least one switch for selectively supplying, to an image display device, the decoded image from respective ones of said m image decoders, thereby enabling instantaneous switching, on said image display device, between images at different angles.
A signal reproducing method for use with a record medium on which images observed from different angles are recorded as intra-frame and inter-frame coded image data, comprising the steps of:
- reading said coded image data from said record medium to recover said different angles of images;
- decoding the read image data corresponding to said angles;
- storing said decoded image data corresponding to said angles in at least two storage regions, one angle at a time, each storage region being operable to store a decoded frame of said intra-frame coded and inter-frame coded image data;
- and
- in a reverse reproduction mode, reading and contracting said decoded image data from said at least two storage regions and writing the contracted image data into a predetermined storage region of a display storage area, thereby enabling the image data stored in said predetermined storage region and corresponding to a particular one of said angles to be displayed at a predetermined, associated region of an image display device, such that contracted moving images at said plural angles are displayed on said image display device in a reverse direction simultaneously during a reverse reproduction operation, and simultaneously in a forward direction during a forward reproduction operation.
A signal reproducing method for use with a record medium on which images observed from different angles are recorded as coded image data, comprising the steps of:
- reading said coded image data from said record medium to recover said different angles of images;
- storing the read coded image data in a plurality m storage units;
- and
- decoding the image data stored in respective storage units and corresponding to respective angles using m image decoders to produce decoded image data corresponding to m angles, respectively;
- selectively supplying to an image display device the decoded image from respective ones of said m image decoders, thereby enabling instantaneous switching between images at different angles displayed on said image display device.
Dependencies are inferred from the claim text.