Device and method for compressing images
AssigneeSony Corporation
InventorKoji Hirosawa
Life of this patent
Estimating the term…
Abstract
Video decoder decodes pictures B0, B1, I2, B3 of GOP-3 which have been read out from a recording medium along with recording of new compressed picture data onto the recording medium thereafter to further decode pictures B4, P5, B6 . . . to restore them. Namely, it is impossible to restore, only by the compressed picture data of pictures B4, P5, B6. . . , these pictures corresponding thereto. For this reason, picture data of pictures B4, P5, B6. . . which have not been caused to be missing by recording of new compressed picture data are re-encoded to generate new GOP. Thus, the video decoder decodes and restores those non-missing pictures on the basis of the pictures B0, B1, I2, B3 within the new GOP.
Claims8
Recording/reproducing apparatus, comprising:
- a recording/reproducing unit operable to record/reproduce video data onto/from a recording medium;
- a decoder operable to decode the video data reproduced from said recording medium;
- a video memory operable to store the decoded video data and input video data;
- and
- a controller operable to cause said decoded video data and input video data stored in the video memory to be displayed on a display simultaneously.
A recording/reproducing method comprising the steps of:
- recording/reproducing video data onto/from a recording medium;
- decoding the video data reproduced from said recording medium;
- storing the decoded video data and input video data;
- and
- causing said stored decoded video data and input video data to be displayed on a display simultaneously.
Dependencies are inferred from the claim text.