Digital camera capable of decreasing a required memory capacity
AssigneeSanyo Electric Co., Ltd.
InventorMasahiko Nishikawa
Life of this patent
Estimating the term…
Abstract
A digital camera includes an SDRAM. The camera data taken is first written on a camera data area formed in the-SDRAM, and thereafter read out 8 lines a time. This 8-lines camera data is YUV-converted by a signal precessing circuit. The resulting 8-lines YUV data is stored in a work area of the SDRAM. A JPEG CODEC reads the YUV data block by block out of the work area, and compresses it. The compressed data is written block by block over the camera data area. At this time, the compressed data is written over in a manner. avoiding camera data uncompleted of compression. Such a process is repeated very 8 lines. If compressed data is obtained for all of the camera data stored within the camera data area, the compressed data is recorded at one time into a flash memory.
Claims7
A digital camera comprising:
- an outputter for outputting first image data of an object photographed in response to a photographing instruction;
- a first writer for writing said first image data outputted from said outputter to an image data area;
- a data processor for subjecting said first image data stored in said image data area to a predetermined data process;
- a second writer for writing second image data produced by said data processor to a work area;
- a compressor for producing compressed image data on the basis of said second image data stored in said work area;
- an overwriter for writing said compressed data produced by said compressor over said image data of the same object stored in said image data area;
- and
- a recorder for recording said compressed image data stored in said image data area into a recording medium,
- wherein said compressor performs a compression process every first number of pixels, and said overwriter performs an overwriting process in a manner avoiding said first image data to which neither said predetermined data process nor said compression process is subjected.
Dependencies are inferred from the claim text.