| US 7,609,301 B2 | ||
| Motion image recording device with compression ratio control | ||
| Junya Kaku, Hyogo (Japan) | ||
| Assigned to Sanyo Electric Co., Ltd., Moriguchi-shi (Japan) | ||
| Appl. No. 10/526,900 PCT Filed Sep. 03, 2003, PCT No. PCT/JP03/11280 § 371(c)(1), (2), (4) Date Mar. 07, 2005, PCT Pub. No. WO2004/025957, PCT Pub. Date Mar. 25, 2004. |
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| Claims priority of application No. 2002-263769 (JP), filed on Sep. 10, 2002. | ||
| Prior Publication US 2006/0153539 A1, Jul. 13, 2006 | ||
| Int. Cl. H04N 5/76 (2006.01); H04N 5/225 (2006.01) | ||
| U.S. Cl. 348—231.2 [348/220.1; 348/222.1; 348/231.6; 348/231.9] | 9 Claims |
| 1. A motion image recording apparatus which comprises a processor mounting a multitasking OS, and records a plurality of screens
of image data forming a motion image signal in a compressed manner in a recording medium, wherein
a plurality of tasks to be executed by said processor includes
a first task in relation to a compression process of image data, and a second task in relation to a recording process of compressed
image data,
said first task includes an adding process for adding, to a predetermined parameter value, a value corresponding to a size
of the compressed image data equivalent to a first number of screens, every time that image data corresponding to said first
number of screens is compressed,
said second task includes a subtracting process for subtracting, from said predetermined parameter value, a value corresponding
to a size of the compressed image data equivalent to a second number of screens, every time that compressed image data corresponding
to said second number of screens is recorded, and
said first task includes a changing process for changing a compression ratio of the image data such that said compression
ratio becomes higher as said predetermined parameter value becomes larger;
wherein, when another task is executed, the second task is interrupted each time that a transmission by the defined amount
is completed.
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