| US 7,512,311 B2 | ||
| Data output apparatus and method with managed buffer | ||
| Junya Kaku, Hyogo (Japan) | ||
| Assigned to Sanyo Electric Co., Ltd., Osaka (Japan) | ||
| Filed on May 19, 2003, as Appl. No. 10/440,887. | ||
| Claims priority of application No. 2002-144059 (JP), filed on May 20, 2002. | ||
| Prior Publication US 2003/0215225 A1, Nov. 20, 2003 | ||
| Int. Cl. H04N 5/78 (2006.01); G06F 12/00 (2006.01); G06F 13/00 (2006.01) | ||
| U.S. Cl. 386—46 [386/125; 711/100; 711/109; 711/110; 711/111; 711/112] | 9 Claims |
| 1. An electronic camera having a playback mode which outputs data stored in a recording medium via a first buffer memory,
comprising:
a setter for setting a transfer instruction including a file address, a buffer memory address and a data size in an instruction
list;
a transferer for transferring from said recording medium to said first buffer memory data complying with the transfer instruction
set in said instruction list;
a reader for reading the data stored in said first buffer memory by a transfer process of said transferer;
a first detector for detecting a size of data which is not yet transferred by said transferer out of the data complying with
the transfer instruction set in said instruction list;
a second detector for detecting a size of data which is not yet read by said reader out of the data complying with the transfer
instruction set in said instruction list; and
a disabler for disabling said reader when a difference value which is acquired by subtracting the size detected by said first
detector from the size detected by said second detector is below a threshold value.
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