Reproducing apparatus with a function for enlarging image data

摘要

A reproducing apparatus includes: a reproducing portion for reproducing, from a recording medium, moving image data including plural frames whose information amount has been compressed by intraframe encoding; a memory for storing the moving image data reproduced by the reproducing portion; a decoding portion for reading out the frames of the moving image data stored in the memory and decoding the read-out data, the decoding portion reading out the moving image data in succession starting from an upper end of a screen for each frame to decode the read-out moving image data; an instruction portion for instructing enlargement of the moving image data; an enlarging area setting portion for setting, for each frame of the moving image data, a partial area on which enlarging processing is to be performed; a control portion for controlling the decoding portion in accordance with the enlarging instruction, the control portion stopping reading out the one frame of moving image data from the memory, which is performed by the decoding portion, in case that moving image data of the partial area in the one frame of the moving image data is decoded; and an output portion for modifying, in accordance with the number of pixels of the display device, the moving image data of the partial area decoded, and outputting the modified image data to the display device.

主权项

1. A reproducing apparatus comprising:
reproducing unit configured to sequentially reproduce, from a recording medium, encoded moving image data of plural frames; a memory configured to store the encoded moving image data of each frame of the plural frames sequentially reproduced by the reproducing unit; instruction unit configured to provide instructions for enlargement and reproduction of the moving image data by selectively controlling the extent of the encoded moving image data to be decoded in the encoded moving image data of the each frame stored in the memory during decoding of the encoded image data; and a control processor comprising: decoding unit configured to read-out the encoded moving image data of the each frame from the memory and decode the encoded moving image data of the each frame read out from the memory; enlarging area setting unit configured to set, in the each frame of the encoded moving image data stored in the memory to be decoded by the decoding unit, an area to be subjected to the enlargement instructed by the instruction unit; control unit configured to control the decoding unit in accordance with the enlarging instruction given by the instruction unit such that when there is no enlargement instruction provided by the instruction unit, the control unit controls the decoding unit so as to decode all the encoded moving image data of the each frame read out sequentially from the memory from the top of the each frame to the bottom thereof and controls an output unit so as to output all the decoded image data of the each frame to a display device,
if the enlargement instruction is provided by the instruction unit, the control unit controls the decoding unit so as to read out sequentially the encoded moving image data of the each frame from the memory from the top of the each frame up to the encoded image data which includes therein but does not go beyond the area set by the enlarging area setting unit and decode the thus read-out encoded moving image data, and controls the output unit so as to output only the decoded image data in the area set in the each frame by the enlarging area setting unit from the image data decoded by the decoding unit to the display device, andif a pause instruction is provided by the instruction unit during the enlargement instructed by the instruction unit, the control unit stops the reproducing unit from reproducing the encoded moving image data from the recording medium, controls the decoding unit so as to read out sequentially all the encoded image data of the each frame from the memory from the top of the each frame to the bottom thereof and decode the thus read-out encoded moving image data, and controls the output unit so as to output only the decoded image data of the area set in the each frame by the enlarging area setting unit from the image data decoded by the decoding unit to the display device, andwherein the instruction unit is arranged, by a user operation, to provide an instruction to shift the set area of the image data of the one frame during the enlargement and the pause instructed by the instruction unit, andwherein the enlarging area setting unit determines the set area in accordance with a direction of in which the display area is instructed to be moved by the instruction unit.